/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-counter-fun.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-175f719-m [2023-11-30 09:27:09,307 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-30 09:27:09,382 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 09:27:09,403 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-30 09:27:09,403 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-30 09:27:09,403 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-30 09:27:09,404 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-30 09:27:09,404 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-30 09:27:09,404 INFO L153 SettingsManager]: * Use SBE=true [2023-11-30 09:27:09,407 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-30 09:27:09,408 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-30 09:27:09,408 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-30 09:27:09,408 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-30 09:27:09,409 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-30 09:27:09,409 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-30 09:27:09,409 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-30 09:27:09,409 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-30 09:27:09,409 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-30 09:27:09,409 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-30 09:27:09,410 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-30 09:27:09,410 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-30 09:27:09,410 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-30 09:27:09,410 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-30 09:27:09,410 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-30 09:27:09,411 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-30 09:27:09,411 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-30 09:27:09,411 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-30 09:27:09,411 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-30 09:27:09,411 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-30 09:27:09,411 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-30 09:27:09,412 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-30 09:27:09,412 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-30 09:27:09,412 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-30 09:27:09,412 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-11-30 09:27:09,573 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-30 09:27:09,585 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-30 09:27:09,586 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-30 09:27:09,587 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-30 09:27:09,587 INFO L274 PluginConnector]: CDTParser initialized [2023-11-30 09:27:09,587 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-counter-fun.wvr.c [2023-11-30 09:27:10,519 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-30 09:27:10,645 INFO L384 CDTParser]: Found 1 translation units. [2023-11-30 09:27:10,646 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-counter-fun.wvr.c [2023-11-30 09:27:10,651 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54a9f3aa5/9abeae7bce2b4871b3edad24122135af/FLAGe04376c84 [2023-11-30 09:27:10,660 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54a9f3aa5/9abeae7bce2b4871b3edad24122135af [2023-11-30 09:27:10,662 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-30 09:27:10,663 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-30 09:27:10,663 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-30 09:27:10,664 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-30 09:27:10,666 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-30 09:27:10,667 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 09:27:10" (1/1) ... [2023-11-30 09:27:10,667 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7de00eb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 09:27:10, skipping insertion in model container [2023-11-30 09:27:10,668 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 09:27:10" (1/1) ... [2023-11-30 09:27:10,688 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-30 09:27:10,838 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-30 09:27:10,846 INFO L202 MainTranslator]: Completed pre-run [2023-11-30 09:27:10,881 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-30 09:27:10,888 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-30 09:27:10,888 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-30 09:27:10,893 INFO L206 MainTranslator]: Completed translation [2023-11-30 09:27:10,895 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 09:27:10 WrapperNode [2023-11-30 09:27:10,895 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-30 09:27:10,896 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-30 09:27:10,896 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-30 09:27:10,897 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-30 09:27:10,901 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 09:27:10" (1/1) ... [2023-11-30 09:27:10,915 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 09:27:10" (1/1) ... [2023-11-30 09:27:10,937 INFO L138 Inliner]: procedures = 24, calls = 46, calls flagged for inlining = 14, calls inlined = 16, statements flattened = 213 [2023-11-30 09:27:10,937 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-30 09:27:10,938 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-30 09:27:10,938 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-30 09:27:10,938 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-30 09:27:10,949 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 09:27:10" (1/1) ... [2023-11-30 09:27:10,949 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 09:27:10" (1/1) ... [2023-11-30 09:27:10,952 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 09:27:10" (1/1) ... [2023-11-30 09:27:10,952 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 09:27:10" (1/1) ... [2023-11-30 09:27:10,957 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 09:27:10" (1/1) ... [2023-11-30 09:27:10,959 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 09:27:10" (1/1) ... [2023-11-30 09:27:10,973 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 09:27:10" (1/1) ... [2023-11-30 09:27:10,974 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 09:27:10" (1/1) ... [2023-11-30 09:27:10,976 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-30 09:27:10,977 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-30 09:27:10,977 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-30 09:27:10,977 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-30 09:27:10,977 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 09:27:10" (1/1) ... [2023-11-30 09:27:10,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-30 09:27:10,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 09:27:11,006 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 09:27:11,015 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 09:27:11,028 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-30 09:27:11,028 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-30 09:27:11,029 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-30 09:27:11,029 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-30 09:27:11,029 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-30 09:27:11,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-30 09:27:11,029 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-30 09:27:11,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-30 09:27:11,029 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-30 09:27:11,029 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-30 09:27:11,029 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-30 09:27:11,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-30 09:27:11,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-30 09:27:11,029 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-30 09:27:11,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-30 09:27:11,031 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 09:27:11,114 INFO L241 CfgBuilder]: Building ICFG [2023-11-30 09:27:11,116 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-30 09:27:11,348 INFO L282 CfgBuilder]: Performing block encoding [2023-11-30 09:27:11,434 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-30 09:27:11,434 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-30 09:27:11,435 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 09:27:11 BoogieIcfgContainer [2023-11-30 09:27:11,435 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-30 09:27:11,437 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-30 09:27:11,437 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-30 09:27:11,439 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-30 09:27:11,439 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 09:27:10" (1/3) ... [2023-11-30 09:27:11,439 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74e4be96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 09:27:11, skipping insertion in model container [2023-11-30 09:27:11,440 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 09:27:10" (2/3) ... [2023-11-30 09:27:11,440 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74e4be96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 09:27:11, skipping insertion in model container [2023-11-30 09:27:11,440 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 09:27:11" (3/3) ... [2023-11-30 09:27:11,440 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-counter-fun.wvr.c [2023-11-30 09:27:11,452 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-30 09:27:11,452 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-30 09:27:11,452 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-30 09:27:11,535 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-30 09:27:11,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 184 places, 190 transitions, 394 flow [2023-11-30 09:27:11,613 INFO L124 PetriNetUnfolderBase]: 13/188 cut-off events. [2023-11-30 09:27:11,613 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-30 09:27:11,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 197 conditions, 188 events. 13/188 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 143 event pairs, 0 based on Foata normal form. 0/167 useless extension candidates. Maximal degree in co-relation 145. Up to 2 conditions per place. [2023-11-30 09:27:11,629 INFO L82 GeneralOperation]: Start removeDead. Operand has 184 places, 190 transitions, 394 flow [2023-11-30 09:27:11,634 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 161 places, 166 transitions, 341 flow [2023-11-30 09:27:11,641 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-30 09:27:11,648 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;@43a249ea, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-30 09:27:11,648 INFO L363 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2023-11-30 09:27:11,661 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-30 09:27:11,661 INFO L124 PetriNetUnfolderBase]: 3/66 cut-off events. [2023-11-30 09:27:11,661 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-30 09:27:11,661 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 09:27:11,662 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] [2023-11-30 09:27:11,662 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-30 09:27:11,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 09:27:11,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1045238491, now seen corresponding path program 1 times [2023-11-30 09:27:11,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 09:27:11,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206564295] [2023-11-30 09:27:11,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:27:11,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 09:27:11,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:27:11,858 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 09:27:11,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 09:27:11,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206564295] [2023-11-30 09:27:11,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206564295] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 09:27:11,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 09:27:11,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-30 09:27:11,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879616271] [2023-11-30 09:27:11,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 09:27:11,866 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-30 09:27:11,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 09:27:11,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-30 09:27:11,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-30 09:27:11,890 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 190 [2023-11-30 09:27:11,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 166 transitions, 341 flow. Second operand has 4 states, 4 states have (on average 147.5) internal successors, (590), 4 states have internal predecessors, (590), 0 states have call successors, (0), 0 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 09:27:11,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 09:27:11,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 190 [2023-11-30 09:27:11,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 09:27:12,035 INFO L124 PetriNetUnfolderBase]: 13/218 cut-off events. [2023-11-30 09:27:12,036 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2023-11-30 09:27:12,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 293 conditions, 218 events. 13/218 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 365 event pairs, 3 based on Foata normal form. 12/205 useless extension candidates. Maximal degree in co-relation 210. Up to 46 conditions per place. [2023-11-30 09:27:12,039 INFO L140 encePairwiseOnDemand]: 168/190 looper letters, 41 selfloop transitions, 10 changer transitions 4/176 dead transitions. [2023-11-30 09:27:12,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 176 transitions, 463 flow [2023-11-30 09:27:12,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-30 09:27:12,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-30 09:27:12,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 795 transitions. [2023-11-30 09:27:12,055 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8368421052631579 [2023-11-30 09:27:12,056 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 795 transitions. [2023-11-30 09:27:12,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 795 transitions. [2023-11-30 09:27:12,058 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 09:27:12,060 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 795 transitions. [2023-11-30 09:27:12,064 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 159.0) internal successors, (795), 5 states have internal predecessors, (795), 0 states have call successors, (0), 0 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 09:27:12,069 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 190.0) internal successors, (1140), 6 states have internal predecessors, (1140), 0 states have call successors, (0), 0 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 09:27:12,069 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 190.0) internal successors, (1140), 6 states have internal predecessors, (1140), 0 states have call successors, (0), 0 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 09:27:12,072 INFO L307 CegarLoopForPetriNet]: 161 programPoint places, 4 predicate places. [2023-11-30 09:27:12,073 INFO L500 AbstractCegarLoop]: Abstraction has has 165 places, 176 transitions, 463 flow [2023-11-30 09:27:12,073 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 147.5) internal successors, (590), 4 states have internal predecessors, (590), 0 states have call successors, (0), 0 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 09:27:12,073 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 09:27:12,074 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] [2023-11-30 09:27:12,074 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-30 09:27:12,074 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-30 09:27:12,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 09:27:12,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1213520395, now seen corresponding path program 1 times [2023-11-30 09:27:12,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 09:27:12,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512736685] [2023-11-30 09:27:12,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:27:12,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 09:27:12,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:27:12,194 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 09:27:12,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 09:27:12,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512736685] [2023-11-30 09:27:12,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512736685] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 09:27:12,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103918202] [2023-11-30 09:27:12,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:27:12,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 09:27:12,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 09:27:12,226 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 09:27:12,253 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 09:27:12,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:27:12,330 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-30 09:27:12,335 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 09:27:12,408 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 09:27:12,408 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-30 09:27:12,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1103918202] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 09:27:12,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-30 09:27:12,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-11-30 09:27:12,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40116053] [2023-11-30 09:27:12,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 09:27:12,411 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-30 09:27:12,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 09:27:12,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-30 09:27:12,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-30 09:27:12,414 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 190 [2023-11-30 09:27:12,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 176 transitions, 463 flow. Second operand has 6 states, 6 states have (on average 148.16666666666666) internal successors, (889), 6 states have internal predecessors, (889), 0 states have call successors, (0), 0 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 09:27:12,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 09:27:12,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 190 [2023-11-30 09:27:12,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 09:27:12,543 INFO L124 PetriNetUnfolderBase]: 13/216 cut-off events. [2023-11-30 09:27:12,544 INFO L125 PetriNetUnfolderBase]: For 48/50 co-relation queries the response was YES. [2023-11-30 09:27:12,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 349 conditions, 216 events. 13/216 cut-off events. For 48/50 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 357 event pairs, 3 based on Foata normal form. 0/193 useless extension candidates. Maximal degree in co-relation 252. Up to 44 conditions per place. [2023-11-30 09:27:12,545 INFO L140 encePairwiseOnDemand]: 178/190 looper letters, 33 selfloop transitions, 16 changer transitions 4/174 dead transitions. [2023-11-30 09:27:12,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 174 transitions, 553 flow [2023-11-30 09:27:12,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-30 09:27:12,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-30 09:27:12,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1073 transitions. [2023-11-30 09:27:12,548 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8067669172932331 [2023-11-30 09:27:12,548 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1073 transitions. [2023-11-30 09:27:12,548 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1073 transitions. [2023-11-30 09:27:12,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 09:27:12,549 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1073 transitions. [2023-11-30 09:27:12,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 153.28571428571428) internal successors, (1073), 7 states have internal predecessors, (1073), 0 states have call successors, (0), 0 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 09:27:12,552 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 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 09:27:12,553 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 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 09:27:12,554 INFO L307 CegarLoopForPetriNet]: 161 programPoint places, 8 predicate places. [2023-11-30 09:27:12,554 INFO L500 AbstractCegarLoop]: Abstraction has has 169 places, 174 transitions, 553 flow [2023-11-30 09:27:12,554 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 148.16666666666666) internal successors, (889), 6 states have internal predecessors, (889), 0 states have call successors, (0), 0 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 09:27:12,555 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 09:27:12,555 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] [2023-11-30 09:27:12,563 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 09:27:12,760 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 09:27:12,761 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-30 09:27:12,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 09:27:12,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1035573963, now seen corresponding path program 1 times [2023-11-30 09:27:12,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 09:27:12,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533821463] [2023-11-30 09:27:12,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:27:12,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 09:27:12,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:27:12,905 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 09:27:12,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 09:27:12,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533821463] [2023-11-30 09:27:12,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533821463] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 09:27:12,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310087709] [2023-11-30 09:27:12,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:27:12,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 09:27:12,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 09:27:12,907 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 09:27:12,909 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 09:27:12,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:27:12,983 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-30 09:27:12,987 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 09:27:13,061 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 09:27:13,061 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-30 09:27:13,112 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 09:27:13,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310087709] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-30 09:27:13,112 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-30 09:27:13,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-30 09:27:13,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622895493] [2023-11-30 09:27:13,113 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-30 09:27:13,114 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-30 09:27:13,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 09:27:13,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-30 09:27:13,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-30 09:27:13,117 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 190 [2023-11-30 09:27:13,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 174 transitions, 553 flow. Second operand has 12 states, 12 states have (on average 148.83333333333334) internal successors, (1786), 12 states have internal predecessors, (1786), 0 states have call successors, (0), 0 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 09:27:13,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 09:27:13,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 190 [2023-11-30 09:27:13,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 09:27:13,302 INFO L124 PetriNetUnfolderBase]: 19/286 cut-off events. [2023-11-30 09:27:13,303 INFO L125 PetriNetUnfolderBase]: For 141/145 co-relation queries the response was YES. [2023-11-30 09:27:13,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 635 conditions, 286 events. 19/286 cut-off events. For 141/145 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 597 event pairs, 3 based on Foata normal form. 0/257 useless extension candidates. Maximal degree in co-relation 524. Up to 96 conditions per place. [2023-11-30 09:27:13,306 INFO L140 encePairwiseOnDemand]: 176/190 looper letters, 65 selfloop transitions, 36 changer transitions 4/226 dead transitions. [2023-11-30 09:27:13,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 226 transitions, 1067 flow [2023-11-30 09:27:13,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-30 09:27:13,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-30 09:27:13,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2151 transitions. [2023-11-30 09:27:13,309 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8086466165413534 [2023-11-30 09:27:13,309 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2151 transitions. [2023-11-30 09:27:13,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2151 transitions. [2023-11-30 09:27:13,310 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 09:27:13,310 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2151 transitions. [2023-11-30 09:27:13,313 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 153.64285714285714) internal successors, (2151), 14 states have internal predecessors, (2151), 0 states have call successors, (0), 0 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 09:27:13,317 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 190.0) internal successors, (2850), 15 states have internal predecessors, (2850), 0 states have call successors, (0), 0 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 09:27:13,318 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 190.0) internal successors, (2850), 15 states have internal predecessors, (2850), 0 states have call successors, (0), 0 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 09:27:13,319 INFO L307 CegarLoopForPetriNet]: 161 programPoint places, 21 predicate places. [2023-11-30 09:27:13,321 INFO L500 AbstractCegarLoop]: Abstraction has has 182 places, 226 transitions, 1067 flow [2023-11-30 09:27:13,321 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 148.83333333333334) internal successors, (1786), 12 states have internal predecessors, (1786), 0 states have call successors, (0), 0 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 09:27:13,322 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 09:27:13,322 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] [2023-11-30 09:27:13,338 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-30 09:27:13,526 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 09:27:13,527 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-30 09:27:13,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 09:27:13,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1011826964, now seen corresponding path program 1 times [2023-11-30 09:27:13,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 09:27:13,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705542560] [2023-11-30 09:27:13,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:27:13,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 09:27:13,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:27:13,590 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 09:27:13,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 09:27:13,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705542560] [2023-11-30 09:27:13,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705542560] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 09:27:13,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 09:27:13,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-30 09:27:13,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298185553] [2023-11-30 09:27:13,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 09:27:13,592 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-30 09:27:13,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 09:27:13,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-30 09:27:13,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-30 09:27:13,593 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 190 [2023-11-30 09:27:13,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 226 transitions, 1067 flow. Second operand has 4 states, 4 states have (on average 164.5) internal successors, (658), 4 states have internal predecessors, (658), 0 states have call successors, (0), 0 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 09:27:13,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 09:27:13,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 190 [2023-11-30 09:27:13,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 09:27:13,659 INFO L124 PetriNetUnfolderBase]: 56/347 cut-off events. [2023-11-30 09:27:13,659 INFO L125 PetriNetUnfolderBase]: For 435/453 co-relation queries the response was YES. [2023-11-30 09:27:13,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 943 conditions, 347 events. 56/347 cut-off events. For 435/453 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1118 event pairs, 23 based on Foata normal form. 0/310 useless extension candidates. Maximal degree in co-relation 558. Up to 131 conditions per place. [2023-11-30 09:27:13,661 INFO L140 encePairwiseOnDemand]: 183/190 looper letters, 26 selfloop transitions, 5 changer transitions 4/241 dead transitions. [2023-11-30 09:27:13,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 241 transitions, 1210 flow [2023-11-30 09:27:13,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-30 09:27:13,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-30 09:27:13,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 848 transitions. [2023-11-30 09:27:13,662 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8926315789473684 [2023-11-30 09:27:13,662 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 848 transitions. [2023-11-30 09:27:13,663 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 848 transitions. [2023-11-30 09:27:13,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 09:27:13,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 848 transitions. [2023-11-30 09:27:13,664 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 169.6) internal successors, (848), 5 states have internal predecessors, (848), 0 states have call successors, (0), 0 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 09:27:13,665 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 190.0) internal successors, (1140), 6 states have internal predecessors, (1140), 0 states have call successors, (0), 0 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 09:27:13,665 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 190.0) internal successors, (1140), 6 states have internal predecessors, (1140), 0 states have call successors, (0), 0 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 09:27:13,666 INFO L307 CegarLoopForPetriNet]: 161 programPoint places, 25 predicate places. [2023-11-30 09:27:13,666 INFO L500 AbstractCegarLoop]: Abstraction has has 186 places, 241 transitions, 1210 flow [2023-11-30 09:27:13,667 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 164.5) internal successors, (658), 4 states have internal predecessors, (658), 0 states have call successors, (0), 0 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 09:27:13,667 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 09:27:13,667 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] [2023-11-30 09:27:13,667 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-30 09:27:13,668 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-30 09:27:13,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 09:27:13,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1564687933, now seen corresponding path program 2 times [2023-11-30 09:27:13,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 09:27:13,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419512434] [2023-11-30 09:27:13,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:27:13,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 09:27:13,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:27:13,797 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 09:27:13,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 09:27:13,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419512434] [2023-11-30 09:27:13,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419512434] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 09:27:13,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106454266] [2023-11-30 09:27:13,798 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-30 09:27:13,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 09:27:13,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 09:27:13,804 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 09:27:13,805 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 09:27:13,863 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-30 09:27:13,864 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-30 09:27:13,864 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-30 09:27:13,866 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 09:27:13,979 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 09:27:13,979 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-30 09:27:14,088 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 09:27:14,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1106454266] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-30 09:27:14,089 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-30 09:27:14,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2023-11-30 09:27:14,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70573734] [2023-11-30 09:27:14,089 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-30 09:27:14,089 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-30 09:27:14,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 09:27:14,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-30 09:27:14,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2023-11-30 09:27:14,092 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 190 [2023-11-30 09:27:14,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 241 transitions, 1210 flow. Second operand has 18 states, 18 states have (on average 130.77777777777777) internal successors, (2354), 18 states have internal predecessors, (2354), 0 states have call successors, (0), 0 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 09:27:14,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 09:27:14,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 190 [2023-11-30 09:27:14,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 09:27:14,801 INFO L124 PetriNetUnfolderBase]: 77/490 cut-off events. [2023-11-30 09:27:14,801 INFO L125 PetriNetUnfolderBase]: For 909/993 co-relation queries the response was YES. [2023-11-30 09:27:14,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1455 conditions, 490 events. 77/490 cut-off events. For 909/993 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1858 event pairs, 18 based on Foata normal form. 0/420 useless extension candidates. Maximal degree in co-relation 841. Up to 178 conditions per place. [2023-11-30 09:27:14,804 INFO L140 encePairwiseOnDemand]: 167/190 looper letters, 91 selfloop transitions, 66 changer transitions 4/272 dead transitions. [2023-11-30 09:27:14,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 272 transitions, 1772 flow [2023-11-30 09:27:14,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-11-30 09:27:14,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2023-11-30 09:27:14,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 6377 transitions. [2023-11-30 09:27:14,813 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6849624060150376 [2023-11-30 09:27:14,813 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 6377 transitions. [2023-11-30 09:27:14,813 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 6377 transitions. [2023-11-30 09:27:14,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 09:27:14,815 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 6377 transitions. [2023-11-30 09:27:14,829 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 130.14285714285714) internal successors, (6377), 49 states have internal predecessors, (6377), 0 states have call successors, (0), 0 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 09:27:14,845 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 190.0) internal successors, (9500), 50 states have internal predecessors, (9500), 0 states have call successors, (0), 0 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 09:27:14,847 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 190.0) internal successors, (9500), 50 states have internal predecessors, (9500), 0 states have call successors, (0), 0 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 09:27:14,849 INFO L307 CegarLoopForPetriNet]: 161 programPoint places, 72 predicate places. [2023-11-30 09:27:14,849 INFO L500 AbstractCegarLoop]: Abstraction has has 233 places, 272 transitions, 1772 flow [2023-11-30 09:27:14,850 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 130.77777777777777) internal successors, (2354), 18 states have internal predecessors, (2354), 0 states have call successors, (0), 0 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 09:27:14,850 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 09:27:14,850 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] [2023-11-30 09:27:14,867 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 09:27:15,056 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 09:27:15,056 INFO L425 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-30 09:27:15,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 09:27:15,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1467488217, now seen corresponding path program 1 times [2023-11-30 09:27:15,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 09:27:15,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016316590] [2023-11-30 09:27:15,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:27:15,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 09:27:15,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:27:15,104 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 09:27:15,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 09:27:15,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016316590] [2023-11-30 09:27:15,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016316590] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 09:27:15,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 09:27:15,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-30 09:27:15,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509631249] [2023-11-30 09:27:15,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 09:27:15,105 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-30 09:27:15,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 09:27:15,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-30 09:27:15,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-30 09:27:15,106 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 190 [2023-11-30 09:27:15,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 272 transitions, 1772 flow. Second operand has 4 states, 4 states have (on average 164.75) internal successors, (659), 4 states have internal predecessors, (659), 0 states have call successors, (0), 0 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 09:27:15,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 09:27:15,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 190 [2023-11-30 09:27:15,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 09:27:15,188 INFO L124 PetriNetUnfolderBase]: 146/584 cut-off events. [2023-11-30 09:27:15,188 INFO L125 PetriNetUnfolderBase]: For 3355/3484 co-relation queries the response was YES. [2023-11-30 09:27:15,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2130 conditions, 584 events. 146/584 cut-off events. For 3355/3484 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2638 event pairs, 54 based on Foata normal form. 19/506 useless extension candidates. Maximal degree in co-relation 1098. Up to 241 conditions per place. [2023-11-30 09:27:15,192 INFO L140 encePairwiseOnDemand]: 183/190 looper letters, 39 selfloop transitions, 5 changer transitions 4/293 dead transitions. [2023-11-30 09:27:15,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 293 transitions, 2041 flow [2023-11-30 09:27:15,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-30 09:27:15,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-30 09:27:15,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 848 transitions. [2023-11-30 09:27:15,193 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8926315789473684 [2023-11-30 09:27:15,194 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 848 transitions. [2023-11-30 09:27:15,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 848 transitions. [2023-11-30 09:27:15,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 09:27:15,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 848 transitions. [2023-11-30 09:27:15,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 169.6) internal successors, (848), 5 states have internal predecessors, (848), 0 states have call successors, (0), 0 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 09:27:15,196 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 190.0) internal successors, (1140), 6 states have internal predecessors, (1140), 0 states have call successors, (0), 0 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 09:27:15,197 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 190.0) internal successors, (1140), 6 states have internal predecessors, (1140), 0 states have call successors, (0), 0 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 09:27:15,197 INFO L307 CegarLoopForPetriNet]: 161 programPoint places, 76 predicate places. [2023-11-30 09:27:15,197 INFO L500 AbstractCegarLoop]: Abstraction has has 237 places, 293 transitions, 2041 flow [2023-11-30 09:27:15,198 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 164.75) internal successors, (659), 4 states have internal predecessors, (659), 0 states have call successors, (0), 0 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 09:27:15,198 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 09:27:15,198 INFO L232 CegarLoopForPetriNet]: trace histogram [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] [2023-11-30 09:27:15,198 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-30 09:27:15,198 INFO L425 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-30 09:27:15,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 09:27:15,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1034272887, now seen corresponding path program 1 times [2023-11-30 09:27:15,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 09:27:15,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814368773] [2023-11-30 09:27:15,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:27:15,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 09:27:15,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:27:15,298 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-30 09:27:15,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 09:27:15,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814368773] [2023-11-30 09:27:15,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814368773] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 09:27:15,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 09:27:15,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-30 09:27:15,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365815983] [2023-11-30 09:27:15,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 09:27:15,299 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-30 09:27:15,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 09:27:15,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-30 09:27:15,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-11-30 09:27:15,300 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 190 [2023-11-30 09:27:15,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 293 transitions, 2041 flow. Second operand has 7 states, 7 states have (on average 144.0) internal successors, (1008), 7 states have internal predecessors, (1008), 0 states have call successors, (0), 0 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 09:27:15,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 09:27:15,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 190 [2023-11-30 09:27:15,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 09:27:15,465 INFO L124 PetriNetUnfolderBase]: 173/859 cut-off events. [2023-11-30 09:27:15,465 INFO L125 PetriNetUnfolderBase]: For 6150/6303 co-relation queries the response was YES. [2023-11-30 09:27:15,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3248 conditions, 859 events. 173/859 cut-off events. For 6150/6303 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 4389 event pairs, 40 based on Foata normal form. 28/769 useless extension candidates. Maximal degree in co-relation 1435. Up to 326 conditions per place. [2023-11-30 09:27:15,470 INFO L140 encePairwiseOnDemand]: 177/190 looper letters, 156 selfloop transitions, 17 changer transitions 26/360 dead transitions. [2023-11-30 09:27:15,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 360 transitions, 3138 flow [2023-11-30 09:27:15,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-30 09:27:15,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-30 09:27:15,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1470 transitions. [2023-11-30 09:27:15,473 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7736842105263158 [2023-11-30 09:27:15,474 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1470 transitions. [2023-11-30 09:27:15,474 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1470 transitions. [2023-11-30 09:27:15,474 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 09:27:15,474 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1470 transitions. [2023-11-30 09:27:15,477 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 147.0) internal successors, (1470), 10 states have internal predecessors, (1470), 0 states have call successors, (0), 0 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 09:27:15,479 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 190.0) internal successors, (2090), 11 states have internal predecessors, (2090), 0 states have call successors, (0), 0 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 09:27:15,479 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 190.0) internal successors, (2090), 11 states have internal predecessors, (2090), 0 states have call successors, (0), 0 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 09:27:15,480 INFO L307 CegarLoopForPetriNet]: 161 programPoint places, 85 predicate places. [2023-11-30 09:27:15,480 INFO L500 AbstractCegarLoop]: Abstraction has has 246 places, 360 transitions, 3138 flow [2023-11-30 09:27:15,480 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 144.0) internal successors, (1008), 7 states have internal predecessors, (1008), 0 states have call successors, (0), 0 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 09:27:15,480 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 09:27:15,481 INFO L232 CegarLoopForPetriNet]: trace histogram [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] [2023-11-30 09:27:15,481 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-30 09:27:15,481 INFO L425 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-30 09:27:15,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 09:27:15,481 INFO L85 PathProgramCache]: Analyzing trace with hash 29521425, now seen corresponding path program 1 times [2023-11-30 09:27:15,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 09:27:15,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287287101] [2023-11-30 09:27:15,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:27:15,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 09:27:15,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:27:15,560 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-30 09:27:15,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 09:27:15,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287287101] [2023-11-30 09:27:15,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287287101] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 09:27:15,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349626128] [2023-11-30 09:27:15,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:27:15,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 09:27:15,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 09:27:15,562 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 09:27:15,582 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 09:27:15,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:27:15,651 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-30 09:27:15,654 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 09:27:15,676 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-30 09:27:15,676 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-30 09:27:15,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [349626128] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 09:27:15,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-30 09:27:15,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-11-30 09:27:15,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54422173] [2023-11-30 09:27:15,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 09:27:15,677 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-30 09:27:15,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 09:27:15,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-30 09:27:15,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-30 09:27:15,678 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 190 [2023-11-30 09:27:15,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 360 transitions, 3138 flow. Second operand has 6 states, 6 states have (on average 165.16666666666666) internal successors, (991), 6 states have internal predecessors, (991), 0 states have call successors, (0), 0 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 09:27:15,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 09:27:15,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 190 [2023-11-30 09:27:15,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 09:27:15,906 INFO L124 PetriNetUnfolderBase]: 176/841 cut-off events. [2023-11-30 09:27:15,906 INFO L125 PetriNetUnfolderBase]: For 7156/7731 co-relation queries the response was YES. [2023-11-30 09:27:15,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3488 conditions, 841 events. 176/841 cut-off events. For 7156/7731 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 4228 event pairs, 24 based on Foata normal form. 50/780 useless extension candidates. Maximal degree in co-relation 1612. Up to 330 conditions per place. [2023-11-30 09:27:15,912 INFO L140 encePairwiseOnDemand]: 184/190 looper letters, 49 selfloop transitions, 8 changer transitions 26/365 dead transitions. [2023-11-30 09:27:15,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 365 transitions, 3360 flow [2023-11-30 09:27:15,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-30 09:27:15,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-30 09:27:15,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1176 transitions. [2023-11-30 09:27:15,916 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8842105263157894 [2023-11-30 09:27:15,916 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1176 transitions. [2023-11-30 09:27:15,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1176 transitions. [2023-11-30 09:27:15,917 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 09:27:15,917 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1176 transitions. [2023-11-30 09:27:15,919 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 168.0) internal successors, (1176), 7 states have internal predecessors, (1176), 0 states have call successors, (0), 0 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 09:27:15,921 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 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 09:27:15,922 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 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 09:27:15,922 INFO L307 CegarLoopForPetriNet]: 161 programPoint places, 90 predicate places. [2023-11-30 09:27:15,922 INFO L500 AbstractCegarLoop]: Abstraction has has 251 places, 365 transitions, 3360 flow [2023-11-30 09:27:15,923 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 165.16666666666666) internal successors, (991), 6 states have internal predecessors, (991), 0 states have call successors, (0), 0 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 09:27:15,923 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 09:27:15,923 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] [2023-11-30 09:27:15,939 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-30 09:27:16,129 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 09:27:16,129 INFO L425 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-30 09:27:16,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 09:27:16,130 INFO L85 PathProgramCache]: Analyzing trace with hash 915164843, now seen corresponding path program 1 times [2023-11-30 09:27:16,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 09:27:16,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145727445] [2023-11-30 09:27:16,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:27:16,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 09:27:16,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:27:16,215 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-30 09:27:16,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 09:27:16,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145727445] [2023-11-30 09:27:16,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145727445] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 09:27:16,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1374099338] [2023-11-30 09:27:16,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:27:16,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 09:27:16,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 09:27:16,230 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 09:27:16,272 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 09:27:16,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:27:16,350 INFO L262 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-30 09:27:16,352 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 09:27:16,375 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-30 09:27:16,375 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-30 09:27:16,406 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-30 09:27:16,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1374099338] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-30 09:27:16,407 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-30 09:27:16,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-30 09:27:16,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533980892] [2023-11-30 09:27:16,407 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-30 09:27:16,407 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-30 09:27:16,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 09:27:16,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-30 09:27:16,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-30 09:27:16,410 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 190 [2023-11-30 09:27:16,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 365 transitions, 3360 flow. Second operand has 12 states, 12 states have (on average 165.83333333333334) internal successors, (1990), 12 states have internal predecessors, (1990), 0 states have call successors, (0), 0 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 09:27:16,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 09:27:16,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 190 [2023-11-30 09:27:16,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 09:27:16,691 INFO L124 PetriNetUnfolderBase]: 324/1136 cut-off events. [2023-11-30 09:27:16,691 INFO L125 PetriNetUnfolderBase]: For 12969/14084 co-relation queries the response was YES. [2023-11-30 09:27:16,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5731 conditions, 1136 events. 324/1136 cut-off events. For 12969/14084 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 6332 event pairs, 51 based on Foata normal form. 97/1046 useless extension candidates. Maximal degree in co-relation 3724. Up to 472 conditions per place. [2023-11-30 09:27:16,700 INFO L140 encePairwiseOnDemand]: 183/190 looper letters, 101 selfloop transitions, 18 changer transitions 26/427 dead transitions. [2023-11-30 09:27:16,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 427 transitions, 4475 flow [2023-11-30 09:27:16,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-30 09:27:16,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-30 09:27:16,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2359 transitions. [2023-11-30 09:27:16,703 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8868421052631579 [2023-11-30 09:27:16,703 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2359 transitions. [2023-11-30 09:27:16,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2359 transitions. [2023-11-30 09:27:16,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 09:27:16,704 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2359 transitions. [2023-11-30 09:27:16,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 168.5) internal successors, (2359), 14 states have internal predecessors, (2359), 0 states have call successors, (0), 0 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 09:27:16,710 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 190.0) internal successors, (2850), 15 states have internal predecessors, (2850), 0 states have call successors, (0), 0 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 09:27:16,710 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 190.0) internal successors, (2850), 15 states have internal predecessors, (2850), 0 states have call successors, (0), 0 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 09:27:16,710 INFO L307 CegarLoopForPetriNet]: 161 programPoint places, 103 predicate places. [2023-11-30 09:27:16,711 INFO L500 AbstractCegarLoop]: Abstraction has has 264 places, 427 transitions, 4475 flow [2023-11-30 09:27:16,711 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 165.83333333333334) internal successors, (1990), 12 states have internal predecessors, (1990), 0 states have call successors, (0), 0 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 09:27:16,711 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 09:27:16,711 INFO L232 CegarLoopForPetriNet]: trace histogram [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] [2023-11-30 09:27:16,726 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 09:27:16,917 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 09:27:16,917 INFO L425 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-30 09:27:16,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 09:27:16,918 INFO L85 PathProgramCache]: Analyzing trace with hash 50120468, now seen corresponding path program 1 times [2023-11-30 09:27:16,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 09:27:16,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021622983] [2023-11-30 09:27:16,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:27:16,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 09:27:16,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:27:17,022 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-30 09:27:17,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 09:27:17,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021622983] [2023-11-30 09:27:17,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021622983] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 09:27:17,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 09:27:17,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-30 09:27:17,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345532937] [2023-11-30 09:27:17,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 09:27:17,023 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-30 09:27:17,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 09:27:17,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-30 09:27:17,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-11-30 09:27:17,025 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 190 [2023-11-30 09:27:17,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 427 transitions, 4475 flow. Second operand has 7 states, 7 states have (on average 144.71428571428572) internal successors, (1013), 7 states have internal predecessors, (1013), 0 states have call successors, (0), 0 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 09:27:17,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 09:27:17,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 190 [2023-11-30 09:27:17,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 09:27:17,224 INFO L124 PetriNetUnfolderBase]: 316/1204 cut-off events. [2023-11-30 09:27:17,224 INFO L125 PetriNetUnfolderBase]: For 16936/17575 co-relation queries the response was YES. [2023-11-30 09:27:17,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6352 conditions, 1204 events. 316/1204 cut-off events. For 16936/17575 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 6931 event pairs, 54 based on Foata normal form. 40/1041 useless extension candidates. Maximal degree in co-relation 3709. Up to 475 conditions per place. [2023-11-30 09:27:17,232 INFO L140 encePairwiseOnDemand]: 177/190 looper letters, 198 selfloop transitions, 18 changer transitions 42/441 dead transitions. [2023-11-30 09:27:17,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 441 transitions, 5249 flow [2023-11-30 09:27:17,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-30 09:27:17,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-30 09:27:17,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1455 transitions. [2023-11-30 09:27:17,233 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7657894736842106 [2023-11-30 09:27:17,233 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1455 transitions. [2023-11-30 09:27:17,233 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1455 transitions. [2023-11-30 09:27:17,234 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 09:27:17,234 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1455 transitions. [2023-11-30 09:27:17,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 145.5) internal successors, (1455), 10 states have internal predecessors, (1455), 0 states have call successors, (0), 0 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 09:27:17,237 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 190.0) internal successors, (2090), 11 states have internal predecessors, (2090), 0 states have call successors, (0), 0 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 09:27:17,237 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 190.0) internal successors, (2090), 11 states have internal predecessors, (2090), 0 states have call successors, (0), 0 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 09:27:17,238 INFO L307 CegarLoopForPetriNet]: 161 programPoint places, 112 predicate places. [2023-11-30 09:27:17,238 INFO L500 AbstractCegarLoop]: Abstraction has has 273 places, 441 transitions, 5249 flow [2023-11-30 09:27:17,238 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 144.71428571428572) internal successors, (1013), 7 states have internal predecessors, (1013), 0 states have call successors, (0), 0 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 09:27:17,238 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 09:27:17,238 INFO L232 CegarLoopForPetriNet]: trace histogram [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] [2023-11-30 09:27:17,238 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-30 09:27:17,238 INFO L425 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-30 09:27:17,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 09:27:17,239 INFO L85 PathProgramCache]: Analyzing trace with hash -388985721, now seen corresponding path program 1 times [2023-11-30 09:27:17,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 09:27:17,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208635139] [2023-11-30 09:27:17,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:27:17,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 09:27:17,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:27:17,298 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-30 09:27:17,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 09:27:17,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208635139] [2023-11-30 09:27:17,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208635139] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 09:27:17,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2125000994] [2023-11-30 09:27:17,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:27:17,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 09:27:17,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 09:27:17,300 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 09:27:17,324 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 09:27:17,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:27:17,407 INFO L262 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-30 09:27:17,408 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 09:27:17,428 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-30 09:27:17,428 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-30 09:27:17,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2125000994] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 09:27:17,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-30 09:27:17,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-11-30 09:27:17,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988554776] [2023-11-30 09:27:17,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 09:27:17,429 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-30 09:27:17,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 09:27:17,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-30 09:27:17,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-30 09:27:17,430 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 190 [2023-11-30 09:27:17,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 441 transitions, 5249 flow. Second operand has 6 states, 6 states have (on average 165.33333333333334) internal successors, (992), 6 states have internal predecessors, (992), 0 states have call successors, (0), 0 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 09:27:17,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 09:27:17,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 190 [2023-11-30 09:27:17,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 09:27:17,657 INFO L124 PetriNetUnfolderBase]: 305/1208 cut-off events. [2023-11-30 09:27:17,657 INFO L125 PetriNetUnfolderBase]: For 19213/21010 co-relation queries the response was YES. [2023-11-30 09:27:17,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6684 conditions, 1208 events. 305/1208 cut-off events. For 19213/21010 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 7174 event pairs, 25 based on Foata normal form. 181/1208 useless extension candidates. Maximal degree in co-relation 3956. Up to 465 conditions per place. [2023-11-30 09:27:17,665 INFO L140 encePairwiseOnDemand]: 184/190 looper letters, 100 selfloop transitions, 8 changer transitions 42/452 dead transitions. [2023-11-30 09:27:17,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 452 transitions, 5761 flow [2023-11-30 09:27:17,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-30 09:27:17,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-30 09:27:17,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1176 transitions. [2023-11-30 09:27:17,666 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8842105263157894 [2023-11-30 09:27:17,666 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1176 transitions. [2023-11-30 09:27:17,666 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1176 transitions. [2023-11-30 09:27:17,667 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 09:27:17,667 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1176 transitions. [2023-11-30 09:27:17,668 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 168.0) internal successors, (1176), 7 states have internal predecessors, (1176), 0 states have call successors, (0), 0 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 09:27:17,669 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 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 09:27:17,669 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 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 09:27:17,670 INFO L307 CegarLoopForPetriNet]: 161 programPoint places, 117 predicate places. [2023-11-30 09:27:17,670 INFO L500 AbstractCegarLoop]: Abstraction has has 278 places, 452 transitions, 5761 flow [2023-11-30 09:27:17,670 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 165.33333333333334) internal successors, (992), 6 states have internal predecessors, (992), 0 states have call successors, (0), 0 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 09:27:17,670 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 09:27:17,670 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] [2023-11-30 09:27:17,691 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-30 09:27:17,875 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 09:27:17,875 INFO L425 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-30 09:27:17,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 09:27:17,875 INFO L85 PathProgramCache]: Analyzing trace with hash 826345221, now seen corresponding path program 1 times [2023-11-30 09:27:17,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 09:27:17,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178139249] [2023-11-30 09:27:17,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:27:17,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 09:27:17,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:27:17,946 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-30 09:27:17,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 09:27:17,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178139249] [2023-11-30 09:27:17,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178139249] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 09:27:17,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50970676] [2023-11-30 09:27:17,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:27:17,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 09:27:17,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 09:27:17,947 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 09:27:17,972 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 09:27:18,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:27:18,041 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-30 09:27:18,042 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 09:27:18,063 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-30 09:27:18,064 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-30 09:27:18,094 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-30 09:27:18,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [50970676] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-30 09:27:18,094 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-30 09:27:18,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-30 09:27:18,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314298737] [2023-11-30 09:27:18,094 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-30 09:27:18,095 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-30 09:27:18,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 09:27:18,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-30 09:27:18,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-30 09:27:18,097 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 190 [2023-11-30 09:27:18,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 452 transitions, 5761 flow. Second operand has 12 states, 12 states have (on average 165.91666666666666) internal successors, (1991), 12 states have internal predecessors, (1991), 0 states have call successors, (0), 0 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 09:27:18,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 09:27:18,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 190 [2023-11-30 09:27:18,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 09:27:18,457 INFO L124 PetriNetUnfolderBase]: 594/1795 cut-off events. [2023-11-30 09:27:18,458 INFO L125 PetriNetUnfolderBase]: For 35787/40711 co-relation queries the response was YES. [2023-11-30 09:27:18,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11993 conditions, 1795 events. 594/1795 cut-off events. For 35787/40711 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 11571 event pairs, 28 based on Foata normal form. 226/1717 useless extension candidates. Maximal degree in co-relation 8737. Up to 777 conditions per place. [2023-11-30 09:27:18,476 INFO L140 encePairwiseOnDemand]: 183/190 looper letters, 212 selfloop transitions, 18 changer transitions 42/574 dead transitions. [2023-11-30 09:27:18,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 574 transitions, 8792 flow [2023-11-30 09:27:18,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-30 09:27:18,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-30 09:27:18,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2359 transitions. [2023-11-30 09:27:18,478 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8868421052631579 [2023-11-30 09:27:18,478 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2359 transitions. [2023-11-30 09:27:18,478 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2359 transitions. [2023-11-30 09:27:18,479 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 09:27:18,479 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2359 transitions. [2023-11-30 09:27:18,481 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 168.5) internal successors, (2359), 14 states have internal predecessors, (2359), 0 states have call successors, (0), 0 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 09:27:18,483 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 190.0) internal successors, (2850), 15 states have internal predecessors, (2850), 0 states have call successors, (0), 0 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 09:27:18,484 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 190.0) internal successors, (2850), 15 states have internal predecessors, (2850), 0 states have call successors, (0), 0 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 09:27:18,484 INFO L307 CegarLoopForPetriNet]: 161 programPoint places, 130 predicate places. [2023-11-30 09:27:18,484 INFO L500 AbstractCegarLoop]: Abstraction has has 291 places, 574 transitions, 8792 flow [2023-11-30 09:27:18,485 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 165.91666666666666) internal successors, (1991), 12 states have internal predecessors, (1991), 0 states have call successors, (0), 0 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 09:27:18,485 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 09:27:18,485 INFO L232 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:27:18,495 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 09:27:18,690 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 09:27:18,690 INFO L425 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-30 09:27:18,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 09:27:18,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1474491523, now seen corresponding path program 1 times [2023-11-30 09:27:18,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 09:27:18,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135582776] [2023-11-30 09:27:18,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:27:18,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 09:27:18,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:27:18,898 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-30 09:27:18,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 09:27:18,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135582776] [2023-11-30 09:27:18,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135582776] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 09:27:18,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367917537] [2023-11-30 09:27:18,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:27:18,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 09:27:18,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 09:27:18,901 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 09:27:18,928 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 09:27:18,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:27:19,000 INFO L262 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-30 09:27:19,001 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 09:27:19,040 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-30 09:27:19,040 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-30 09:27:19,158 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-30 09:27:19,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1367917537] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-30 09:27:19,159 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-30 09:27:19,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2023-11-30 09:27:19,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217060394] [2023-11-30 09:27:19,159 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-30 09:27:19,159 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-30 09:27:19,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 09:27:19,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-30 09:27:19,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2023-11-30 09:27:19,163 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 190 [2023-11-30 09:27:19,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 574 transitions, 8792 flow. Second operand has 24 states, 24 states have (on average 166.16666666666666) internal successors, (3988), 24 states have internal predecessors, (3988), 0 states have call successors, (0), 0 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 09:27:19,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 09:27:19,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 190 [2023-11-30 09:27:19,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 09:27:19,604 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([630] L48-->L53: Formula: (let ((.cse1 (not |v_thread1_#t~short4#1_61|)) (.cse0 (select (select |v_#memory_int_95| v_~f~0.base_58) (+ v_~f~0.offset_58 (* v_~counter~0_112 4))))) (and (= v_~counter~0_111 .cse0) (or (and (< .cse0 0) .cse1) (and (<= 0 .cse0) |v_thread1_#t~short4#1_61|)) (not (= (ite (and (<= 0 v_~counter~0_112) (< v_~counter~0_112 v_~n~0_30)) 1 0) 0)) (not (= (ite |v_thread1_#t~short4#1_62| 1 0) 0)) (or (and .cse1 (= |v_thread1_#t~mem3#1_46| |v_thread1Thread1of1ForFork1_#t~mem3#1_1|) (= |v_thread1_#t~short4#1_61| |v_thread1_#t~short4#1_62|)) (and (or (and |v_thread1_#t~short4#1_62| (< |v_thread1_#t~mem3#1_46| v_~n_inv~0_16)) (and (not |v_thread1_#t~short4#1_62|) (<= v_~n_inv~0_16 |v_thread1_#t~mem3#1_46|))) (= |v_thread1_#t~mem3#1_46| .cse0) |v_thread1_#t~short4#1_61|)) (not (= (ite (= v_~counter~0_112 (select (select |v_#memory_int_95| v_~f_inv~0.base_58) (+ v_~f_inv~0.offset_58 (* .cse0 4)))) 1 0) 0)))) InVars {~counter~0=v_~counter~0_112, ~f_inv~0.offset=v_~f_inv~0.offset_58, ~f~0.base=v_~f~0.base_58, #memory_int=|v_#memory_int_95|, thread1Thread1of1ForFork1_#t~mem3#1=|v_thread1Thread1of1ForFork1_#t~mem3#1_1|, ~f_inv~0.base=v_~f_inv~0.base_58, ~n~0=v_~n~0_30, ~f~0.offset=v_~f~0.offset_58, ~n_inv~0=v_~n_inv~0_16} OutVars{~counter~0=v_~counter~0_111, ~f_inv~0.offset=v_~f_inv~0.offset_58, thread1Thread1of1ForFork1_#t~mem6#1=|v_thread1Thread1of1ForFork1_#t~mem6#1_1|, ~f~0.base=v_~f~0.base_58, thread1Thread1of1ForFork1_#t~short4#1=|v_thread1Thread1of1ForFork1_#t~short4#1_1|, thread1Thread1of1ForFork1_#t~mem2#1=|v_thread1Thread1of1ForFork1_#t~mem2#1_1|, ~f_inv~0.base=v_~f_inv~0.base_58, ~f~0.offset=v_~f~0.offset_58, thread1Thread1of1ForFork1_#t~mem5#1=|v_thread1Thread1of1ForFork1_#t~mem5#1_1|, thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1=|v_thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1_1|, thread1Thread1of1ForFork1_#t~mem7#1=|v_thread1Thread1of1ForFork1_#t~mem7#1_1|, #memory_int=|v_#memory_int_95|, ~n~0=v_~n~0_30, thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1=|v_thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1_1|, ~n_inv~0=v_~n_inv~0_16} AuxVars[|v_thread1_#t~short4#1_62|, |v_thread1_#t~short4#1_61|, |v_thread1_#t~mem3#1_46|] AssignedVars[thread1Thread1of1ForFork1_#t~mem5#1, ~counter~0, thread1Thread1of1ForFork1_#t~mem6#1, thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1, thread1Thread1of1ForFork1_#t~mem7#1, thread1Thread1of1ForFork1_#t~short4#1, thread1Thread1of1ForFork1_#t~mem2#1, thread1Thread1of1ForFork1_#t~mem3#1, thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1][284], [132#L53true, 1515#true, 2982#true, 818#true, 3775#(<= |thread1Thread1of1ForFork1_~i~0#1| 1), 187#true, 2589#true, 1882#(<= |thread1Thread1of1ForFork1_~i~0#1| 1), 194#true, 85#L83-4true, 1537#(<= 1 |thread1Thread1of1ForFork1_~i~0#1|), thread1Thread1of1ForFork1InUse, 138#L69true, thread2Thread1of1ForFork0InUse, 2571#true, 1508#true, 907#(<= ~n~0 2147483647), 401#true]) [2023-11-30 09:27:19,604 INFO L294 olderBase$Statistics]: this new event has 150 ancestors and is cut-off event [2023-11-30 09:27:19,604 INFO L297 olderBase$Statistics]: existing Event has 143 ancestors and is cut-off event [2023-11-30 09:27:19,604 INFO L297 olderBase$Statistics]: existing Event has 129 ancestors and is cut-off event [2023-11-30 09:27:19,604 INFO L297 olderBase$Statistics]: existing Event has 136 ancestors and is cut-off event [2023-11-30 09:27:20,081 INFO L124 PetriNetUnfolderBase]: 1187/2970 cut-off events. [2023-11-30 09:27:20,082 INFO L125 PetriNetUnfolderBase]: For 73394/86764 co-relation queries the response was YES. [2023-11-30 09:27:20,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23555 conditions, 2970 events. 1187/2970 cut-off events. For 73394/86764 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 20766 event pairs, 47 based on Foata normal form. 607/3025 useless extension candidates. Maximal degree in co-relation 20107. Up to 1593 conditions per place. [2023-11-30 09:27:20,117 INFO L140 encePairwiseOnDemand]: 183/190 looper letters, 470 selfloop transitions, 42 changer transitions 42/856 dead transitions. [2023-11-30 09:27:20,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 856 transitions, 16386 flow [2023-11-30 09:27:20,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-11-30 09:27:20,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-11-30 09:27:20,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 5386 transitions. [2023-11-30 09:27:20,137 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8858552631578948 [2023-11-30 09:27:20,137 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 5386 transitions. [2023-11-30 09:27:20,137 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 5386 transitions. [2023-11-30 09:27:20,139 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 09:27:20,139 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 5386 transitions. [2023-11-30 09:27:20,144 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 168.3125) internal successors, (5386), 32 states have internal predecessors, (5386), 0 states have call successors, (0), 0 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 09:27:20,150 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 190.0) internal successors, (6270), 33 states have internal predecessors, (6270), 0 states have call successors, (0), 0 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 09:27:20,151 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 190.0) internal successors, (6270), 33 states have internal predecessors, (6270), 0 states have call successors, (0), 0 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 09:27:20,152 INFO L307 CegarLoopForPetriNet]: 161 programPoint places, 161 predicate places. [2023-11-30 09:27:20,152 INFO L500 AbstractCegarLoop]: Abstraction has has 322 places, 856 transitions, 16386 flow [2023-11-30 09:27:20,153 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 166.16666666666666) internal successors, (3988), 24 states have internal predecessors, (3988), 0 states have call successors, (0), 0 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 09:27:20,153 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 09:27:20,153 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] [2023-11-30 09:27:20,176 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 09:27:20,359 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 09:27:20,359 INFO L425 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-30 09:27:20,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 09:27:20,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1596527648, now seen corresponding path program 1 times [2023-11-30 09:27:20,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 09:27:20,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755208652] [2023-11-30 09:27:20,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:27:20,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 09:27:20,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:27:20,527 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 09:27:20,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 09:27:20,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755208652] [2023-11-30 09:27:20,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755208652] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 09:27:20,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863154766] [2023-11-30 09:27:20,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:27:20,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 09:27:20,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 09:27:20,546 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 09:27:20,576 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 09:27:20,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:27:20,639 INFO L262 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-30 09:27:20,641 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 09:27:20,707 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 09:27:20,707 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-30 09:27:20,938 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 09:27:20,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863154766] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-30 09:27:20,938 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-30 09:27:20,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2023-11-30 09:27:20,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895288939] [2023-11-30 09:27:20,938 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-30 09:27:20,939 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-30 09:27:20,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 09:27:20,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-30 09:27:20,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2023-11-30 09:27:20,942 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 190 [2023-11-30 09:27:20,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 856 transitions, 16386 flow. Second operand has 32 states, 32 states have (on average 149.40625) internal successors, (4781), 32 states have internal predecessors, (4781), 0 states have call successors, (0), 0 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 09:27:20,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 09:27:20,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 190 [2023-11-30 09:27:20,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 09:27:21,476 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([661] thread1EXIT-->L84-2: Formula: (and (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem24#1_6| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ (- 4294967296) .cse0))) v_thread1Thread1of1ForFork1_thidvar0_4) (= 0 v_thread1Thread1of1ForFork1_thidvar1_4)) InVars {thread1Thread1of1ForFork1_thidvar1=v_thread1Thread1of1ForFork1_thidvar1_4, ULTIMATE.start_main_#t~mem24#1=|v_ULTIMATE.start_main_#t~mem24#1_6|, thread1Thread1of1ForFork1_thidvar0=v_thread1Thread1of1ForFork1_thidvar0_4} OutVars{thread1Thread1of1ForFork1_thidvar1=v_thread1Thread1of1ForFork1_thidvar1_4, ULTIMATE.start_main_#t~mem24#1=|v_ULTIMATE.start_main_#t~mem24#1_6|, thread1Thread1of1ForFork1_thidvar0=v_thread1Thread1of1ForFork1_thidvar0_4} AuxVars[] AssignedVars[][344], [1878#true, 2982#true, 1515#true, 818#true, 187#true, 2589#true, 3771#true, 4686#true, 1533#true, 194#true, thread1Thread1of1ForFork1NotInUse, 138#L69true, 2571#true, thread2Thread1of1ForFork0InUse, 31#L84-2true, 1508#true, 907#(<= ~n~0 2147483647), 401#true]) [2023-11-30 09:27:21,477 INFO L294 olderBase$Statistics]: this new event has 149 ancestors and is cut-off event [2023-11-30 09:27:21,477 INFO L297 olderBase$Statistics]: existing Event has 135 ancestors and is cut-off event [2023-11-30 09:27:21,477 INFO L297 olderBase$Statistics]: existing Event has 142 ancestors and is cut-off event [2023-11-30 09:27:21,477 INFO L297 olderBase$Statistics]: existing Event has 135 ancestors and is cut-off event [2023-11-30 09:27:22,209 INFO L124 PetriNetUnfolderBase]: 1199/3235 cut-off events. [2023-11-30 09:27:22,209 INFO L125 PetriNetUnfolderBase]: For 95559/106131 co-relation queries the response was YES. [2023-11-30 09:27:22,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26381 conditions, 3235 events. 1199/3235 cut-off events. For 95559/106131 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 22651 event pairs, 31 based on Foata normal form. 95/2761 useless extension candidates. Maximal degree in co-relation 21001. Up to 1631 conditions per place. [2023-11-30 09:27:22,247 INFO L140 encePairwiseOnDemand]: 177/190 looper letters, 616 selfloop transitions, 144 changer transitions 58/1053 dead transitions. [2023-11-30 09:27:22,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 1053 transitions, 20566 flow [2023-11-30 09:27:22,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-11-30 09:27:22,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2023-11-30 09:27:22,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 6712 transitions. [2023-11-30 09:27:22,252 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8028708133971292 [2023-11-30 09:27:22,252 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 6712 transitions. [2023-11-30 09:27:22,252 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 6712 transitions. [2023-11-30 09:27:22,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 09:27:22,253 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 6712 transitions. [2023-11-30 09:27:22,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 152.54545454545453) internal successors, (6712), 44 states have internal predecessors, (6712), 0 states have call successors, (0), 0 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 09:27:22,264 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 190.0) internal successors, (8550), 45 states have internal predecessors, (8550), 0 states have call successors, (0), 0 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 09:27:22,265 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 190.0) internal successors, (8550), 45 states have internal predecessors, (8550), 0 states have call successors, (0), 0 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 09:27:22,266 INFO L307 CegarLoopForPetriNet]: 161 programPoint places, 204 predicate places. [2023-11-30 09:27:22,266 INFO L500 AbstractCegarLoop]: Abstraction has has 365 places, 1053 transitions, 20566 flow [2023-11-30 09:27:22,266 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 149.40625) internal successors, (4781), 32 states have internal predecessors, (4781), 0 states have call successors, (0), 0 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 09:27:22,267 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 09:27:22,267 INFO L232 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:27:22,282 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-30 09:27:22,471 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 09:27:22,472 INFO L425 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-30 09:27:22,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 09:27:22,488 INFO L85 PathProgramCache]: Analyzing trace with hash 620190720, now seen corresponding path program 2 times [2023-11-30 09:27:22,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 09:27:22,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12419421] [2023-11-30 09:27:22,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:27:22,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 09:27:22,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:27:22,720 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-30 09:27:22,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 09:27:22,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12419421] [2023-11-30 09:27:22,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12419421] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 09:27:22,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1613213785] [2023-11-30 09:27:22,721 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-30 09:27:22,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 09:27:22,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 09:27:22,738 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 09:27:22,745 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 09:27:22,838 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-30 09:27:22,838 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-30 09:27:22,839 INFO L262 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-30 09:27:22,841 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 09:27:22,975 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-11-30 09:27:22,975 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-30 09:27:23,118 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-11-30 09:27:23,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1613213785] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-30 09:27:23,118 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-30 09:27:23,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 15 [2023-11-30 09:27:23,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340160234] [2023-11-30 09:27:23,119 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-30 09:27:23,119 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-30 09:27:23,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 09:27:23,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-30 09:27:23,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2023-11-30 09:27:23,121 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 190 [2023-11-30 09:27:23,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 1053 transitions, 20566 flow. Second operand has 16 states, 16 states have (on average 157.75) internal successors, (2524), 16 states have internal predecessors, (2524), 0 states have call successors, (0), 0 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 09:27:23,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 09:27:23,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 190 [2023-11-30 09:27:23,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 09:27:23,934 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([628] L47-7-->L47-8: Formula: (<= v_~N~0_1 |v_thread1Thread1of1ForFork1_~i~0#1_5|) InVars {thread1Thread1of1ForFork1_~i~0#1=|v_thread1Thread1of1ForFork1_~i~0#1_5|, ~N~0=v_~N~0_1} OutVars{thread1Thread1of1ForFork1_~i~0#1=|v_thread1Thread1of1ForFork1_~i~0#1_5|, ~N~0=v_~N~0_1} AuxVars[] AssignedVars[][285], [2982#true, 1515#true, 818#true, 187#true, 3775#(<= |thread1Thread1of1ForFork1_~i~0#1| 1), 1882#(<= |thread1Thread1of1ForFork1_~i~0#1| 1), 2589#true, 167#L47-8true, 5701#(<= ~N~0 2147483647), 4686#true, 194#true, 85#L83-4true, 1537#(<= 1 |thread1Thread1of1ForFork1_~i~0#1|), thread1Thread1of1ForFork1InUse, 138#L69true, thread2Thread1of1ForFork0InUse, 2571#true, 907#(<= ~n~0 2147483647), 1508#true, 401#true]) [2023-11-30 09:27:23,934 INFO L294 olderBase$Statistics]: this new event has 156 ancestors and is cut-off event [2023-11-30 09:27:23,935 INFO L297 olderBase$Statistics]: existing Event has 149 ancestors and is cut-off event [2023-11-30 09:27:23,935 INFO L297 olderBase$Statistics]: existing Event has 135 ancestors and is cut-off event [2023-11-30 09:27:23,935 INFO L297 olderBase$Statistics]: existing Event has 128 ancestors and is cut-off event [2023-11-30 09:27:23,935 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([627] L47-7-->L48: Formula: (< |v_thread1Thread1of1ForFork1_~i~0#1_3| v_~N~0_2) InVars {thread1Thread1of1ForFork1_~i~0#1=|v_thread1Thread1of1ForFork1_~i~0#1_3|, ~N~0=v_~N~0_2} OutVars{thread1Thread1of1ForFork1_~i~0#1=|v_thread1Thread1of1ForFork1_~i~0#1_3|, ~N~0=v_~N~0_2} AuxVars[] AssignedVars[][286], [2982#true, 1515#true, 818#true, 187#true, 3775#(<= |thread1Thread1of1ForFork1_~i~0#1| 1), 1882#(<= |thread1Thread1of1ForFork1_~i~0#1| 1), 2589#true, 5701#(<= ~N~0 2147483647), 4686#true, 194#true, 85#L83-4true, thread1Thread1of1ForFork1InUse, 1537#(<= 1 |thread1Thread1of1ForFork1_~i~0#1|), 138#L69true, thread2Thread1of1ForFork0InUse, 128#L48true, 2571#true, 907#(<= ~n~0 2147483647), 1508#true, 401#true]) [2023-11-30 09:27:23,935 INFO L294 olderBase$Statistics]: this new event has 156 ancestors and is cut-off event [2023-11-30 09:27:23,935 INFO L297 olderBase$Statistics]: existing Event has 128 ancestors and is cut-off event [2023-11-30 09:27:23,935 INFO L297 olderBase$Statistics]: existing Event has 149 ancestors and is cut-off event [2023-11-30 09:27:23,935 INFO L297 olderBase$Statistics]: existing Event has 135 ancestors and is cut-off event [2023-11-30 09:27:25,061 INFO L124 PetriNetUnfolderBase]: 2652/6160 cut-off events. [2023-11-30 09:27:25,061 INFO L125 PetriNetUnfolderBase]: For 92911/98907 co-relation queries the response was YES. [2023-11-30 09:27:25,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46215 conditions, 6160 events. 2652/6160 cut-off events. For 92911/98907 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 44170 event pairs, 96 based on Foata normal form. 151/5116 useless extension candidates. Maximal degree in co-relation 40119. Up to 2937 conditions per place. [2023-11-30 09:27:25,113 INFO L140 encePairwiseOnDemand]: 180/190 looper letters, 758 selfloop transitions, 29 changer transitions 308/1583 dead transitions. [2023-11-30 09:27:25,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 1583 transitions, 30399 flow [2023-11-30 09:27:25,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-30 09:27:25,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-11-30 09:27:25,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3532 transitions. [2023-11-30 09:27:25,116 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8449760765550239 [2023-11-30 09:27:25,116 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3532 transitions. [2023-11-30 09:27:25,117 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3532 transitions. [2023-11-30 09:27:25,117 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 09:27:25,117 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3532 transitions. [2023-11-30 09:27:25,120 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 160.54545454545453) internal successors, (3532), 22 states have internal predecessors, (3532), 0 states have call successors, (0), 0 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 09:27:25,123 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 190.0) internal successors, (4370), 23 states have internal predecessors, (4370), 0 states have call successors, (0), 0 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 09:27:25,124 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 190.0) internal successors, (4370), 23 states have internal predecessors, (4370), 0 states have call successors, (0), 0 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 09:27:25,124 INFO L307 CegarLoopForPetriNet]: 161 programPoint places, 224 predicate places. [2023-11-30 09:27:25,124 INFO L500 AbstractCegarLoop]: Abstraction has has 385 places, 1583 transitions, 30399 flow [2023-11-30 09:27:25,125 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 157.75) internal successors, (2524), 16 states have internal predecessors, (2524), 0 states have call successors, (0), 0 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 09:27:25,125 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 09:27:25,125 INFO L232 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:27:25,146 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-30 09:27:25,329 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 09:27:25,329 INFO L425 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-30 09:27:25,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 09:27:25,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1992866211, now seen corresponding path program 2 times [2023-11-30 09:27:25,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 09:27:25,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906265711] [2023-11-30 09:27:25,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:27:25,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 09:27:25,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:27:25,829 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 0 proven. 365 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-30 09:27:25,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 09:27:25,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906265711] [2023-11-30 09:27:25,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906265711] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 09:27:25,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298743363] [2023-11-30 09:27:25,829 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-30 09:27:25,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 09:27:25,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 09:27:25,835 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 09:27:25,836 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 09:27:25,944 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-30 09:27:25,945 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-30 09:27:25,946 INFO L262 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-30 09:27:25,947 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 09:27:26,136 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2023-11-30 09:27:26,136 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-30 09:27:26,310 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2023-11-30 09:27:26,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1298743363] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-30 09:27:26,311 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-30 09:27:26,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 5, 5] total 27 [2023-11-30 09:27:26,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868261675] [2023-11-30 09:27:26,311 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-30 09:27:26,311 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-30 09:27:26,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 09:27:26,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-30 09:27:26,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=571, Unknown=0, NotChecked=0, Total=756 [2023-11-30 09:27:26,314 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 190 [2023-11-30 09:27:26,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 1583 transitions, 30399 flow. Second operand has 28 states, 28 states have (on average 157.57142857142858) internal successors, (4412), 28 states have internal predecessors, (4412), 0 states have call successors, (0), 0 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 09:27:26,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 09:27:26,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 190 [2023-11-30 09:27:26,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 09:27:29,264 INFO L124 PetriNetUnfolderBase]: 4009/8478 cut-off events. [2023-11-30 09:27:29,265 INFO L125 PetriNetUnfolderBase]: For 100685/101866 co-relation queries the response was YES. [2023-11-30 09:27:29,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65430 conditions, 8478 events. 4009/8478 cut-off events. For 100685/101866 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 58135 event pairs, 25 based on Foata normal form. 160/6878 useless extension candidates. Maximal degree in co-relation 59026. Up to 4192 conditions per place. [2023-11-30 09:27:29,302 INFO L140 encePairwiseOnDemand]: 180/190 looper letters, 3 selfloop transitions, 3 changer transitions 1853/2241 dead transitions. [2023-11-30 09:27:29,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 2241 transitions, 42162 flow [2023-11-30 09:27:29,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-11-30 09:27:29,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2023-11-30 09:27:29,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 6430 transitions. [2023-11-30 09:27:29,307 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8460526315789474 [2023-11-30 09:27:29,307 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 6430 transitions. [2023-11-30 09:27:29,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 6430 transitions. [2023-11-30 09:27:29,308 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 09:27:29,308 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 6430 transitions. [2023-11-30 09:27:29,313 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 160.75) internal successors, (6430), 40 states have internal predecessors, (6430), 0 states have call successors, (0), 0 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 09:27:29,318 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 190.0) internal successors, (7790), 41 states have internal predecessors, (7790), 0 states have call successors, (0), 0 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 09:27:29,318 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 190.0) internal successors, (7790), 41 states have internal predecessors, (7790), 0 states have call successors, (0), 0 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 09:27:29,319 INFO L307 CegarLoopForPetriNet]: 161 programPoint places, 262 predicate places. [2023-11-30 09:27:29,319 INFO L500 AbstractCegarLoop]: Abstraction has has 423 places, 2241 transitions, 42162 flow [2023-11-30 09:27:29,319 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 157.57142857142858) internal successors, (4412), 28 states have internal predecessors, (4412), 0 states have call successors, (0), 0 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 09:27:29,319 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 09:27:29,320 INFO L232 CegarLoopForPetriNet]: trace histogram [15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:27:29,324 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-30 09:27:29,523 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 09:27:29,524 INFO L425 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-30 09:27:29,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 09:27:29,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1821926472, now seen corresponding path program 2 times [2023-11-30 09:27:29,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 09:27:29,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808545912] [2023-11-30 09:27:29,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:27:29,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 09:27:29,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:27:30,063 INFO L134 CoverageAnalysis]: Checked inductivity of 1022 backedges. 0 proven. 1022 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 09:27:30,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 09:27:30,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808545912] [2023-11-30 09:27:30,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808545912] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 09:27:30,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193005850] [2023-11-30 09:27:30,063 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-30 09:27:30,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 09:27:30,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 09:27:30,080 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 09:27:30,081 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 09:27:30,166 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-30 09:27:30,167 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-30 09:27:30,167 INFO L262 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-30 09:27:30,169 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 09:27:30,414 INFO L134 CoverageAnalysis]: Checked inductivity of 1022 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-11-30 09:27:30,415 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-30 09:27:30,634 INFO L134 CoverageAnalysis]: Checked inductivity of 1022 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-11-30 09:27:30,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [193005850] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-30 09:27:30,634 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-30 09:27:30,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 7, 7] total 37 [2023-11-30 09:27:30,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916890932] [2023-11-30 09:27:30,635 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-30 09:27:30,635 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-11-30 09:27:30,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 09:27:30,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-11-30 09:27:30,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=313, Invalid=1093, Unknown=0, NotChecked=0, Total=1406 [2023-11-30 09:27:30,639 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 190 [2023-11-30 09:27:30,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 2241 transitions, 42162 flow. Second operand has 38 states, 38 states have (on average 131.21052631578948) internal successors, (4986), 38 states have internal predecessors, (4986), 0 states have call successors, (0), 0 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 09:27:30,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 09:27:30,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 190 [2023-11-30 09:27:30,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 09:27:35,453 INFO L124 PetriNetUnfolderBase]: 4015/8521 cut-off events. [2023-11-30 09:27:35,454 INFO L125 PetriNetUnfolderBase]: For 118093/118986 co-relation queries the response was YES. [2023-11-30 09:27:35,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67640 conditions, 8521 events. 4015/8521 cut-off events. For 118093/118986 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 58651 event pairs, 25 based on Foata normal form. 56/6812 useless extension candidates. Maximal degree in co-relation 60315. Up to 4192 conditions per place. [2023-11-30 09:27:35,500 INFO L140 encePairwiseOnDemand]: 168/190 looper letters, 0 selfloop transitions, 0 changer transitions 2281/2281 dead transitions. [2023-11-30 09:27:35,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 540 places, 2281 transitions, 44910 flow [2023-11-30 09:27:35,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2023-11-30 09:27:35,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2023-11-30 09:27:35,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 15444 transitions. [2023-11-30 09:27:35,509 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6830605926581159 [2023-11-30 09:27:35,509 INFO L72 ComplementDD]: Start complementDD. Operand 119 states and 15444 transitions. [2023-11-30 09:27:35,510 INFO L73 IsDeterministic]: Start isDeterministic. Operand 119 states and 15444 transitions. [2023-11-30 09:27:35,512 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 09:27:35,512 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 119 states and 15444 transitions. [2023-11-30 09:27:35,524 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 120 states, 119 states have (on average 129.78151260504202) internal successors, (15444), 119 states have internal predecessors, (15444), 0 states have call successors, (0), 0 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 09:27:35,536 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 120 states, 120 states have (on average 190.0) internal successors, (22800), 120 states have internal predecessors, (22800), 0 states have call successors, (0), 0 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 09:27:35,538 INFO L81 ComplementDD]: Finished complementDD. Result has 120 states, 120 states have (on average 190.0) internal successors, (22800), 120 states have internal predecessors, (22800), 0 states have call successors, (0), 0 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 09:27:35,538 INFO L307 CegarLoopForPetriNet]: 161 programPoint places, 379 predicate places. [2023-11-30 09:27:35,538 INFO L500 AbstractCegarLoop]: Abstraction has has 540 places, 2281 transitions, 44910 flow [2023-11-30 09:27:35,539 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 131.21052631578948) internal successors, (4986), 38 states have internal predecessors, (4986), 0 states have call successors, (0), 0 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 09:27:35,544 INFO L143 wickiGriesTestDumper]: Dumping Owicki-Gries test to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/popl20-counter-fun.wvr.c_BEv2_AllErrorsAtOnce [2023-11-30 09:27:35,657 INFO L810 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 14 remaining) [2023-11-30 09:27:35,657 INFO L810 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 14 remaining) [2023-11-30 09:27:35,658 INFO L810 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 14 remaining) [2023-11-30 09:27:35,658 INFO L810 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 14 remaining) [2023-11-30 09:27:35,658 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 14 remaining) [2023-11-30 09:27:35,658 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 14 remaining) [2023-11-30 09:27:35,658 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 14 remaining) [2023-11-30 09:27:35,658 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 14 remaining) [2023-11-30 09:27:35,658 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 14 remaining) [2023-11-30 09:27:35,658 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 14 remaining) [2023-11-30 09:27:35,658 INFO L810 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 14 remaining) [2023-11-30 09:27:35,658 INFO L810 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 14 remaining) [2023-11-30 09:27:35,658 INFO L810 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 14 remaining) [2023-11-30 09:27:35,658 INFO L810 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 14 remaining) [2023-11-30 09:27:35,684 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-30 09:27:35,863 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 09:27:35,863 INFO L457 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 09:27:35,869 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-30 09:27:35,869 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-11-30 09:27:35,874 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 09:27:35 BasicIcfg [2023-11-30 09:27:35,874 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-30 09:27:35,875 INFO L158 Benchmark]: Toolchain (without parser) took 25212.06ms. Allocated memory was 633.3MB in the beginning and 2.2GB in the end (delta: 1.6GB). Free memory was 583.9MB in the beginning and 1.4GB in the end (delta: -798.7MB). Peak memory consumption was 773.4MB. Max. memory is 16.0GB. [2023-11-30 09:27:35,875 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 417.3MB. Free memory was 369.7MB in the beginning and 369.6MB in the end (delta: 140.0kB). There was no memory consumed. Max. memory is 16.0GB. [2023-11-30 09:27:35,875 INFO L158 Benchmark]: CACSL2BoogieTranslator took 232.20ms. Allocated memory is still 633.3MB. Free memory was 583.9MB in the beginning and 571.8MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-11-30 09:27:35,875 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.18ms. Allocated memory is still 633.3MB. Free memory was 571.8MB in the beginning and 569.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-11-30 09:27:35,875 INFO L158 Benchmark]: Boogie Preprocessor took 38.55ms. Allocated memory is still 633.3MB. Free memory was 569.7MB in the beginning and 567.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-11-30 09:27:35,875 INFO L158 Benchmark]: RCFGBuilder took 458.61ms. Allocated memory is still 633.3MB. Free memory was 567.6MB in the beginning and 531.8MB in the end (delta: 35.9MB). Peak memory consumption was 35.7MB. Max. memory is 16.0GB. [2023-11-30 09:27:35,876 INFO L158 Benchmark]: TraceAbstraction took 24437.36ms. Allocated memory was 633.3MB in the beginning and 2.2GB in the end (delta: 1.6GB). Free memory was 531.1MB in the beginning and 1.4GB in the end (delta: -851.6MB). Peak memory consumption was 718.8MB. Max. memory is 16.0GB. [2023-11-30 09:27:35,877 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 417.3MB. Free memory was 369.7MB in the beginning and 369.6MB in the end (delta: 140.0kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 232.20ms. Allocated memory is still 633.3MB. Free memory was 583.9MB in the beginning and 571.8MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 41.18ms. Allocated memory is still 633.3MB. Free memory was 571.8MB in the beginning and 569.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 38.55ms. Allocated memory is still 633.3MB. Free memory was 569.7MB in the beginning and 567.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 458.61ms. Allocated memory is still 633.3MB. Free memory was 567.6MB in the beginning and 531.8MB in the end (delta: 35.9MB). Peak memory consumption was 35.7MB. Max. memory is 16.0GB. * TraceAbstraction took 24437.36ms. Allocated memory was 633.3MB in the beginning and 2.2GB in the end (delta: 1.6GB). Free memory was 531.1MB in the beginning and 1.4GB in the end (delta: -851.6MB). Peak memory consumption was 718.8MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 47]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 47]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 98]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 98]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 98]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 98]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 210 locations, 14 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: 24.3s, OverallIterations: 17, TraceHistogramMax: 15, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 15.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3726 SdHoareTripleChecker+Valid, 1.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3726 mSDsluCounter, 858 SdHoareTripleChecker+Invalid, 1.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 664 mSDsCounter, 269 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3078 IncrementalHoareTripleChecker+Invalid, 3347 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 269 mSolverCounterUnsat, 194 mSDtfsCounter, 3078 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3243 GetRequests, 2712 SyntacticMatches, 16 SemanticMatches, 515 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11708 ImplicationChecksByTransitivity, 4.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44910occurred in iteration=17, InterpolantAutomatonStates: 404, 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: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.6s InterpolantComputationTime, 3567 NumberOfCodeBlocks, 3249 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 4776 ConstructedInterpolants, 0 QuantifiedInterpolants, 9494 SizeOfPredicates, 60 NumberOfNonLiveVariables, 2793 ConjunctsInSsa, 80 ConjunctsInUnsatCore, 38 InterpolantComputations, 8 PerfectInterpolantSequences, 2775/5529 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-30 09:27:35,897 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...