/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-channel-sum.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-175f719-m [2023-11-30 09:22:00,182 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-30 09:22:00,259 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 09:22:00,278 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-30 09:22:00,279 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-30 09:22:00,279 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-30 09:22:00,280 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-30 09:22:00,280 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-30 09:22:00,280 INFO L153 SettingsManager]: * Use SBE=true [2023-11-30 09:22:00,281 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-30 09:22:00,281 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-30 09:22:00,281 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-30 09:22:00,282 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-30 09:22:00,282 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-30 09:22:00,282 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-30 09:22:00,283 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-30 09:22:00,283 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-30 09:22:00,283 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-30 09:22:00,284 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-30 09:22:00,284 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-30 09:22:00,284 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-30 09:22:00,285 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-30 09:22:00,285 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-30 09:22:00,285 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-30 09:22:00,286 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-30 09:22:00,286 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-30 09:22:00,286 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-30 09:22:00,287 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-30 09:22:00,287 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-30 09:22:00,287 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-30 09:22:00,288 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-30 09:22:00,288 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-30 09:22:00,288 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-30 09:22:00,288 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-11-30 09:22:00,465 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-30 09:22:00,483 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-30 09:22:00,485 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-30 09:22:00,487 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-30 09:22:00,487 INFO L274 PluginConnector]: CDTParser initialized [2023-11-30 09:22:00,488 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-channel-sum.wvr.c [2023-11-30 09:22:01,697 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-30 09:22:01,855 INFO L384 CDTParser]: Found 1 translation units. [2023-11-30 09:22:01,856 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-channel-sum.wvr.c [2023-11-30 09:22:01,862 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/844ddd740/dbeeaea08aba4324b8bb072e69657fc3/FLAG8bb6d2e9a [2023-11-30 09:22:01,871 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/844ddd740/dbeeaea08aba4324b8bb072e69657fc3 [2023-11-30 09:22:01,873 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-30 09:22:01,874 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-30 09:22:01,875 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-30 09:22:01,875 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-30 09:22:01,879 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-30 09:22:01,879 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 09:22:01" (1/1) ... [2023-11-30 09:22:01,880 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cd7c4f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 09:22:01, skipping insertion in model container [2023-11-30 09:22:01,880 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 09:22:01" (1/1) ... [2023-11-30 09:22:01,899 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-30 09:22:02,030 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-30 09:22:02,038 INFO L202 MainTranslator]: Completed pre-run [2023-11-30 09:22:02,059 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-30 09:22:02,070 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-30 09:22:02,070 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-30 09:22:02,077 INFO L206 MainTranslator]: Completed translation [2023-11-30 09:22:02,077 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 09:22:02 WrapperNode [2023-11-30 09:22:02,077 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-30 09:22:02,078 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-30 09:22:02,078 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-30 09:22:02,078 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-30 09:22:02,083 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 09:22:02" (1/1) ... [2023-11-30 09:22:02,091 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 09:22:02" (1/1) ... [2023-11-30 09:22:02,116 INFO L138 Inliner]: procedures = 24, calls = 46, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 169 [2023-11-30 09:22:02,116 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-30 09:22:02,117 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-30 09:22:02,117 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-30 09:22:02,117 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-30 09:22:02,130 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 09:22:02" (1/1) ... [2023-11-30 09:22:02,130 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 09:22:02" (1/1) ... [2023-11-30 09:22:02,133 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 09:22:02" (1/1) ... [2023-11-30 09:22:02,133 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 09:22:02" (1/1) ... [2023-11-30 09:22:02,138 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 09:22:02" (1/1) ... [2023-11-30 09:22:02,141 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 09:22:02" (1/1) ... [2023-11-30 09:22:02,142 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 09:22:02" (1/1) ... [2023-11-30 09:22:02,143 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 09:22:02" (1/1) ... [2023-11-30 09:22:02,146 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-30 09:22:02,146 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-30 09:22:02,147 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-30 09:22:02,147 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-30 09:22:02,147 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 09:22:02" (1/1) ... [2023-11-30 09:22:02,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-30 09:22:02,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 09:22:02,172 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 09:22:02,180 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 09:22:02,191 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-30 09:22:02,192 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-30 09:22:02,192 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-30 09:22:02,192 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-30 09:22:02,192 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-30 09:22:02,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-30 09:22:02,192 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-30 09:22:02,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-30 09:22:02,193 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-30 09:22:02,193 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-30 09:22:02,193 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-30 09:22:02,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-30 09:22:02,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-30 09:22:02,193 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-30 09:22:02,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-30 09:22:02,194 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 09:22:02,285 INFO L241 CfgBuilder]: Building ICFG [2023-11-30 09:22:02,287 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-30 09:22:02,516 INFO L282 CfgBuilder]: Performing block encoding [2023-11-30 09:22:02,594 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-30 09:22:02,595 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-30 09:22:02,596 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 09:22:02 BoogieIcfgContainer [2023-11-30 09:22:02,596 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-30 09:22:02,598 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-30 09:22:02,598 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-30 09:22:02,600 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-30 09:22:02,600 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 09:22:01" (1/3) ... [2023-11-30 09:22:02,601 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e5a71b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 09:22:02, skipping insertion in model container [2023-11-30 09:22:02,601 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 09:22:02" (2/3) ... [2023-11-30 09:22:02,601 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e5a71b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 09:22:02, skipping insertion in model container [2023-11-30 09:22:02,601 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 09:22:02" (3/3) ... [2023-11-30 09:22:02,602 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-channel-sum.wvr.c [2023-11-30 09:22:02,616 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-30 09:22:02,617 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-11-30 09:22:02,617 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-30 09:22:02,721 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-30 09:22:02,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 159 places, 163 transitions, 340 flow [2023-11-30 09:22:02,844 INFO L124 PetriNetUnfolderBase]: 11/161 cut-off events. [2023-11-30 09:22:02,844 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-30 09:22:02,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170 conditions, 161 events. 11/161 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 191 event pairs, 0 based on Foata normal form. 0/140 useless extension candidates. Maximal degree in co-relation 112. Up to 2 conditions per place. [2023-11-30 09:22:02,849 INFO L82 GeneralOperation]: Start removeDead. Operand has 159 places, 163 transitions, 340 flow [2023-11-30 09:22:02,860 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 136 places, 139 transitions, 287 flow [2023-11-30 09:22:02,872 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-30 09:22:02,879 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;@a2b2e04, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-30 09:22:02,880 INFO L363 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-11-30 09:22:02,902 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-30 09:22:02,902 INFO L124 PetriNetUnfolderBase]: 3/62 cut-off events. [2023-11-30 09:22:02,902 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-30 09:22:02,902 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 09:22:02,903 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] [2023-11-30 09:22:02,903 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-30 09:22:02,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 09:22:02,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1574749743, now seen corresponding path program 1 times [2023-11-30 09:22:02,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 09:22:02,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714572088] [2023-11-30 09:22:02,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:22:02,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 09:22:03,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:22:03,293 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 09:22:03,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 09:22:03,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714572088] [2023-11-30 09:22:03,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714572088] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 09:22:03,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 09:22:03,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-30 09:22:03,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696991416] [2023-11-30 09:22:03,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 09:22:03,301 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-30 09:22:03,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 09:22:03,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-30 09:22:03,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-30 09:22:03,329 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 163 [2023-11-30 09:22:03,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 139 transitions, 287 flow. Second operand has 4 states, 4 states have (on average 129.5) internal successors, (518), 4 states have internal predecessors, (518), 0 states have call successors, (0), 0 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 09:22:03,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 09:22:03,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 163 [2023-11-30 09:22:03,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 09:22:03,465 INFO L124 PetriNetUnfolderBase]: 15/177 cut-off events. [2023-11-30 09:22:03,465 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2023-11-30 09:22:03,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 247 conditions, 177 events. 15/177 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 383 event pairs, 8 based on Foata normal form. 24/178 useless extension candidates. Maximal degree in co-relation 143. Up to 46 conditions per place. [2023-11-30 09:22:03,470 INFO L140 encePairwiseOnDemand]: 150/163 looper letters, 30 selfloop transitions, 5 changer transitions 2/142 dead transitions. [2023-11-30 09:22:03,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 142 transitions, 363 flow [2023-11-30 09:22:03,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-30 09:22:03,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-30 09:22:03,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 684 transitions. [2023-11-30 09:22:03,492 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8392638036809816 [2023-11-30 09:22:03,492 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 684 transitions. [2023-11-30 09:22:03,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 684 transitions. [2023-11-30 09:22:03,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 09:22:03,499 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 684 transitions. [2023-11-30 09:22:03,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 136.8) internal successors, (684), 5 states have internal predecessors, (684), 0 states have call successors, (0), 0 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 09:22:03,511 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 163.0) internal successors, (978), 6 states have internal predecessors, (978), 0 states have call successors, (0), 0 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 09:22:03,511 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 163.0) internal successors, (978), 6 states have internal predecessors, (978), 0 states have call successors, (0), 0 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 09:22:03,516 INFO L307 CegarLoopForPetriNet]: 136 programPoint places, 4 predicate places. [2023-11-30 09:22:03,517 INFO L500 AbstractCegarLoop]: Abstraction has has 140 places, 142 transitions, 363 flow [2023-11-30 09:22:03,517 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 129.5) internal successors, (518), 4 states have internal predecessors, (518), 0 states have call successors, (0), 0 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 09:22:03,518 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 09:22:03,518 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] [2023-11-30 09:22:03,519 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-30 09:22:03,519 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-30 09:22:03,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 09:22:03,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1665031682, now seen corresponding path program 1 times [2023-11-30 09:22:03,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 09:22:03,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837498805] [2023-11-30 09:22:03,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:22:03,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 09:22:03,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:22:03,718 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 09:22:03,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 09:22:03,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837498805] [2023-11-30 09:22:03,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837498805] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 09:22:03,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1365805439] [2023-11-30 09:22:03,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:22:03,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 09:22:03,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 09:22:03,724 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 09:22:03,757 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 09:22:03,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:22:03,822 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-30 09:22:03,830 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 09:22:03,921 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 09:22:03,921 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-30 09:22:03,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1365805439] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 09:22:03,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-30 09:22:03,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-11-30 09:22:03,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812586231] [2023-11-30 09:22:03,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 09:22:03,923 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-30 09:22:03,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 09:22:03,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-30 09:22:03,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-30 09:22:03,928 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 163 [2023-11-30 09:22:03,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 142 transitions, 363 flow. Second operand has 6 states, 6 states have (on average 130.16666666666666) internal successors, (781), 6 states have internal predecessors, (781), 0 states have call successors, (0), 0 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 09:22:03,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 09:22:03,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 163 [2023-11-30 09:22:03,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 09:22:04,066 INFO L124 PetriNetUnfolderBase]: 15/176 cut-off events. [2023-11-30 09:22:04,067 INFO L125 PetriNetUnfolderBase]: For 47/47 co-relation queries the response was YES. [2023-11-30 09:22:04,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 298 conditions, 176 events. 15/176 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 385 event pairs, 8 based on Foata normal form. 0/154 useless extension candidates. Maximal degree in co-relation 164. Up to 45 conditions per place. [2023-11-30 09:22:04,071 INFO L140 encePairwiseOnDemand]: 157/163 looper letters, 26 selfloop transitions, 8 changer transitions 2/141 dead transitions. [2023-11-30 09:22:04,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 141 transitions, 427 flow [2023-11-30 09:22:04,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-30 09:22:04,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-30 09:22:04,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 931 transitions. [2023-11-30 09:22:04,075 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8159509202453987 [2023-11-30 09:22:04,075 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 931 transitions. [2023-11-30 09:22:04,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 931 transitions. [2023-11-30 09:22:04,076 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 09:22:04,076 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 931 transitions. [2023-11-30 09:22:04,078 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 133.0) internal successors, (931), 7 states have internal predecessors, (931), 0 states have call successors, (0), 0 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 09:22:04,080 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 163.0) internal successors, (1304), 8 states have internal predecessors, (1304), 0 states have call successors, (0), 0 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 09:22:04,081 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 163.0) internal successors, (1304), 8 states have internal predecessors, (1304), 0 states have call successors, (0), 0 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 09:22:04,082 INFO L307 CegarLoopForPetriNet]: 136 programPoint places, 9 predicate places. [2023-11-30 09:22:04,082 INFO L500 AbstractCegarLoop]: Abstraction has has 145 places, 141 transitions, 427 flow [2023-11-30 09:22:04,083 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 130.16666666666666) internal successors, (781), 6 states have internal predecessors, (781), 0 states have call successors, (0), 0 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 09:22:04,083 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 09:22:04,084 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] [2023-11-30 09:22:04,093 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-30 09:22:04,293 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 09:22:04,294 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-30 09:22:04,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 09:22:04,295 INFO L85 PathProgramCache]: Analyzing trace with hash -76374234, now seen corresponding path program 1 times [2023-11-30 09:22:04,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 09:22:04,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646332801] [2023-11-30 09:22:04,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:22:04,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 09:22:04,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:22:04,380 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 09:22:04,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 09:22:04,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646332801] [2023-11-30 09:22:04,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646332801] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 09:22:04,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302963372] [2023-11-30 09:22:04,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:22:04,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 09:22:04,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 09:22:04,382 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 09:22:04,408 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 09:22:04,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:22:04,460 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-30 09:22:04,462 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 09:22:04,502 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 09:22:04,502 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-30 09:22:04,564 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 09:22:04,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1302963372] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-30 09:22:04,564 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-30 09:22:04,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-30 09:22:04,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787042008] [2023-11-30 09:22:04,565 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-30 09:22:04,565 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-30 09:22:04,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 09:22:04,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-30 09:22:04,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-30 09:22:04,568 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 163 [2023-11-30 09:22:04,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 141 transitions, 427 flow. Second operand has 12 states, 12 states have (on average 130.83333333333334) internal successors, (1570), 12 states have internal predecessors, (1570), 0 states have call successors, (0), 0 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 09:22:04,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 09:22:04,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 163 [2023-11-30 09:22:04,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 09:22:04,755 INFO L124 PetriNetUnfolderBase]: 18/211 cut-off events. [2023-11-30 09:22:04,756 INFO L125 PetriNetUnfolderBase]: For 97/97 co-relation queries the response was YES. [2023-11-30 09:22:04,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 464 conditions, 211 events. 18/211 cut-off events. For 97/97 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 528 event pairs, 8 based on Foata normal form. 0/186 useless extension candidates. Maximal degree in co-relation 300. Up to 71 conditions per place. [2023-11-30 09:22:04,758 INFO L140 encePairwiseOnDemand]: 156/163 looper letters, 42 selfloop transitions, 18 changer transitions 2/167 dead transitions. [2023-11-30 09:22:04,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 167 transitions, 703 flow [2023-11-30 09:22:04,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-30 09:22:04,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-30 09:22:04,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1855 transitions. [2023-11-30 09:22:04,763 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8128834355828221 [2023-11-30 09:22:04,764 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1855 transitions. [2023-11-30 09:22:04,764 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1855 transitions. [2023-11-30 09:22:04,765 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 09:22:04,765 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1855 transitions. [2023-11-30 09:22:04,769 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 132.5) internal successors, (1855), 14 states have internal predecessors, (1855), 0 states have call successors, (0), 0 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 09:22:04,774 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 163.0) internal successors, (2445), 15 states have internal predecessors, (2445), 0 states have call successors, (0), 0 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 09:22:04,776 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 163.0) internal successors, (2445), 15 states have internal predecessors, (2445), 0 states have call successors, (0), 0 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 09:22:04,777 INFO L307 CegarLoopForPetriNet]: 136 programPoint places, 22 predicate places. [2023-11-30 09:22:04,780 INFO L500 AbstractCegarLoop]: Abstraction has has 158 places, 167 transitions, 703 flow [2023-11-30 09:22:04,781 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 130.83333333333334) internal successors, (1570), 12 states have internal predecessors, (1570), 0 states have call successors, (0), 0 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 09:22:04,781 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 09:22:04,781 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] [2023-11-30 09:22:04,791 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-30 09:22:04,987 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 09:22:04,987 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-30 09:22:04,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 09:22:04,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1187242396, now seen corresponding path program 1 times [2023-11-30 09:22:04,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 09:22:04,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756909145] [2023-11-30 09:22:04,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:22:04,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 09:22:05,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:22:05,139 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 09:22:05,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 09:22:05,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756909145] [2023-11-30 09:22:05,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756909145] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 09:22:05,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 09:22:05,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-30 09:22:05,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390993773] [2023-11-30 09:22:05,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 09:22:05,141 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-30 09:22:05,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 09:22:05,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-30 09:22:05,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-30 09:22:05,142 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 163 [2023-11-30 09:22:05,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 167 transitions, 703 flow. Second operand has 5 states, 5 states have (on average 125.6) internal successors, (628), 5 states have internal predecessors, (628), 0 states have call successors, (0), 0 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 09:22:05,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 09:22:05,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 163 [2023-11-30 09:22:05,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 09:22:05,272 INFO L124 PetriNetUnfolderBase]: 126/499 cut-off events. [2023-11-30 09:22:05,272 INFO L125 PetriNetUnfolderBase]: For 632/686 co-relation queries the response was YES. [2023-11-30 09:22:05,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1304 conditions, 499 events. 126/499 cut-off events. For 632/686 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2338 event pairs, 44 based on Foata normal form. 0/386 useless extension candidates. Maximal degree in co-relation 911. Up to 170 conditions per place. [2023-11-30 09:22:05,276 INFO L140 encePairwiseOnDemand]: 157/163 looper letters, 34 selfloop transitions, 5 changer transitions 2/176 dead transitions. [2023-11-30 09:22:05,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 176 transitions, 862 flow [2023-11-30 09:22:05,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-30 09:22:05,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-30 09:22:05,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 655 transitions. [2023-11-30 09:22:05,279 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.803680981595092 [2023-11-30 09:22:05,279 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 655 transitions. [2023-11-30 09:22:05,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 655 transitions. [2023-11-30 09:22:05,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 09:22:05,279 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 655 transitions. [2023-11-30 09:22:05,281 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 131.0) internal successors, (655), 5 states have internal predecessors, (655), 0 states have call successors, (0), 0 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 09:22:05,282 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 163.0) internal successors, (978), 6 states have internal predecessors, (978), 0 states have call successors, (0), 0 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 09:22:05,283 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 163.0) internal successors, (978), 6 states have internal predecessors, (978), 0 states have call successors, (0), 0 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 09:22:05,284 INFO L307 CegarLoopForPetriNet]: 136 programPoint places, 25 predicate places. [2023-11-30 09:22:05,284 INFO L500 AbstractCegarLoop]: Abstraction has has 161 places, 176 transitions, 862 flow [2023-11-30 09:22:05,284 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 125.6) internal successors, (628), 5 states have internal predecessors, (628), 0 states have call successors, (0), 0 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 09:22:05,284 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 09:22:05,285 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] [2023-11-30 09:22:05,285 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-30 09:22:05,285 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-30 09:22:05,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 09:22:05,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1850191901, now seen corresponding path program 1 times [2023-11-30 09:22:05,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 09:22:05,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941848408] [2023-11-30 09:22:05,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:22:05,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 09:22:05,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:22:05,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 09:22:05,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 09:22:05,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941848408] [2023-11-30 09:22:05,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941848408] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 09:22:05,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 09:22:05,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-30 09:22:05,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025432970] [2023-11-30 09:22:05,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 09:22:05,407 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-30 09:22:05,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 09:22:05,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-30 09:22:05,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-30 09:22:05,409 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 163 [2023-11-30 09:22:05,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 176 transitions, 862 flow. Second operand has 4 states, 4 states have (on average 132.5) internal successors, (530), 4 states have internal predecessors, (530), 0 states have call successors, (0), 0 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 09:22:05,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 09:22:05,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 163 [2023-11-30 09:22:05,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 09:22:05,546 INFO L124 PetriNetUnfolderBase]: 172/606 cut-off events. [2023-11-30 09:22:05,546 INFO L125 PetriNetUnfolderBase]: For 1201/1371 co-relation queries the response was YES. [2023-11-30 09:22:05,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2020 conditions, 606 events. 172/606 cut-off events. For 1201/1371 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2817 event pairs, 64 based on Foata normal form. 0/450 useless extension candidates. Maximal degree in co-relation 1377. Up to 249 conditions per place. [2023-11-30 09:22:05,551 INFO L140 encePairwiseOnDemand]: 158/163 looper letters, 60 selfloop transitions, 6 changer transitions 2/208 dead transitions. [2023-11-30 09:22:05,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 208 transitions, 1298 flow [2023-11-30 09:22:05,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-30 09:22:05,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-30 09:22:05,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 709 transitions. [2023-11-30 09:22:05,554 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8699386503067484 [2023-11-30 09:22:05,554 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 709 transitions. [2023-11-30 09:22:05,554 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 709 transitions. [2023-11-30 09:22:05,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 09:22:05,554 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 709 transitions. [2023-11-30 09:22:05,556 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 141.8) internal successors, (709), 5 states have internal predecessors, (709), 0 states have call successors, (0), 0 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 09:22:05,557 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 163.0) internal successors, (978), 6 states have internal predecessors, (978), 0 states have call successors, (0), 0 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 09:22:05,557 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 163.0) internal successors, (978), 6 states have internal predecessors, (978), 0 states have call successors, (0), 0 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 09:22:05,558 INFO L307 CegarLoopForPetriNet]: 136 programPoint places, 29 predicate places. [2023-11-30 09:22:05,558 INFO L500 AbstractCegarLoop]: Abstraction has has 165 places, 208 transitions, 1298 flow [2023-11-30 09:22:05,559 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 132.5) internal successors, (530), 4 states have internal predecessors, (530), 0 states have call successors, (0), 0 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 09:22:05,559 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 09:22:05,559 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] [2023-11-30 09:22:05,559 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-30 09:22:05,559 INFO L425 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-30 09:22:05,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 09:22:05,559 INFO L85 PathProgramCache]: Analyzing trace with hash -2106409702, now seen corresponding path program 1 times [2023-11-30 09:22:05,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 09:22:05,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926844589] [2023-11-30 09:22:05,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:22:05,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 09:22:05,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:22:05,612 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 09:22:05,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 09:22:05,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926844589] [2023-11-30 09:22:05,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926844589] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 09:22:05,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 09:22:05,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 09:22:05,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624322227] [2023-11-30 09:22:05,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 09:22:05,613 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 09:22:05,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 09:22:05,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 09:22:05,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 09:22:05,615 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 163 [2023-11-30 09:22:05,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 208 transitions, 1298 flow. Second operand has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 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 09:22:05,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 09:22:05,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 163 [2023-11-30 09:22:05,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 09:22:05,709 INFO L124 PetriNetUnfolderBase]: 136/514 cut-off events. [2023-11-30 09:22:05,709 INFO L125 PetriNetUnfolderBase]: For 1610/1713 co-relation queries the response was YES. [2023-11-30 09:22:05,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1832 conditions, 514 events. 136/514 cut-off events. For 1610/1713 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 2256 event pairs, 40 based on Foata normal form. 0/412 useless extension candidates. Maximal degree in co-relation 1501. Up to 203 conditions per place. [2023-11-30 09:22:05,714 INFO L140 encePairwiseOnDemand]: 158/163 looper letters, 44 selfloop transitions, 4 changer transitions 2/200 dead transitions. [2023-11-30 09:22:05,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 200 transitions, 1295 flow [2023-11-30 09:22:05,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 09:22:05,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 09:22:05,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 433 transitions. [2023-11-30 09:22:05,716 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.885480572597137 [2023-11-30 09:22:05,716 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 433 transitions. [2023-11-30 09:22:05,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 433 transitions. [2023-11-30 09:22:05,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 09:22:05,717 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 433 transitions. [2023-11-30 09:22:05,718 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 144.33333333333334) internal successors, (433), 3 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:22:05,719 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 163.0) internal successors, (652), 4 states have internal predecessors, (652), 0 states have call successors, (0), 0 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 09:22:05,719 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 163.0) internal successors, (652), 4 states have internal predecessors, (652), 0 states have call successors, (0), 0 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 09:22:05,722 INFO L307 CegarLoopForPetriNet]: 136 programPoint places, 29 predicate places. [2023-11-30 09:22:05,722 INFO L500 AbstractCegarLoop]: Abstraction has has 165 places, 200 transitions, 1295 flow [2023-11-30 09:22:05,722 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 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 09:22:05,722 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 09:22:05,722 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] [2023-11-30 09:22:05,722 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-30 09:22:05,723 INFO L425 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-30 09:22:05,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 09:22:05,723 INFO L85 PathProgramCache]: Analyzing trace with hash -2106409701, now seen corresponding path program 1 times [2023-11-30 09:22:05,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 09:22:05,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148906417] [2023-11-30 09:22:05,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:22:05,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 09:22:05,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:22:05,842 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 09:22:05,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 09:22:05,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148906417] [2023-11-30 09:22:05,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148906417] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 09:22:05,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 09:22:05,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-30 09:22:05,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407213115] [2023-11-30 09:22:05,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 09:22:05,843 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-30 09:22:05,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 09:22:05,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-30 09:22:05,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-30 09:22:05,846 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 163 [2023-11-30 09:22:05,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 200 transitions, 1295 flow. Second operand has 6 states, 6 states have (on average 127.0) internal successors, (762), 6 states have internal predecessors, (762), 0 states have call successors, (0), 0 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 09:22:05,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 09:22:05,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 163 [2023-11-30 09:22:05,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 09:22:06,004 INFO L124 PetriNetUnfolderBase]: 137/580 cut-off events. [2023-11-30 09:22:06,004 INFO L125 PetriNetUnfolderBase]: For 2497/2626 co-relation queries the response was YES. [2023-11-30 09:22:06,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2165 conditions, 580 events. 137/580 cut-off events. For 2497/2626 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2522 event pairs, 42 based on Foata normal form. 3/477 useless extension candidates. Maximal degree in co-relation 1368. Up to 209 conditions per place. [2023-11-30 09:22:06,009 INFO L140 encePairwiseOnDemand]: 152/163 looper letters, 74 selfloop transitions, 8 changer transitions 10/206 dead transitions. [2023-11-30 09:22:06,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 206 transitions, 1553 flow [2023-11-30 09:22:06,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-30 09:22:06,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-30 09:22:06,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1156 transitions. [2023-11-30 09:22:06,013 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7880027266530334 [2023-11-30 09:22:06,013 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1156 transitions. [2023-11-30 09:22:06,013 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1156 transitions. [2023-11-30 09:22:06,014 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 09:22:06,014 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1156 transitions. [2023-11-30 09:22:06,016 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 128.44444444444446) internal successors, (1156), 9 states have internal predecessors, (1156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:22:06,019 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 163.0) internal successors, (1630), 10 states have internal predecessors, (1630), 0 states have call successors, (0), 0 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 09:22:06,020 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 163.0) internal successors, (1630), 10 states have internal predecessors, (1630), 0 states have call successors, (0), 0 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 09:22:06,021 INFO L307 CegarLoopForPetriNet]: 136 programPoint places, 37 predicate places. [2023-11-30 09:22:06,021 INFO L500 AbstractCegarLoop]: Abstraction has has 173 places, 206 transitions, 1553 flow [2023-11-30 09:22:06,021 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 127.0) internal successors, (762), 6 states have internal predecessors, (762), 0 states have call successors, (0), 0 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 09:22:06,021 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 09:22:06,022 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] [2023-11-30 09:22:06,022 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-30 09:22:06,022 INFO L425 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-30 09:22:06,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 09:22:06,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1555057864, now seen corresponding path program 1 times [2023-11-30 09:22:06,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 09:22:06,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973727159] [2023-11-30 09:22:06,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:22:06,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 09:22:06,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:22:06,209 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 09:22:06,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 09:22:06,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973727159] [2023-11-30 09:22:06,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973727159] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 09:22:06,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [210817325] [2023-11-30 09:22:06,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:22:06,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 09:22:06,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 09:22:06,216 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 09:22:06,242 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 09:22:06,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:22:06,312 INFO L262 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-30 09:22:06,315 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 09:22:06,425 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-30 09:22:06,426 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-30 09:22:06,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [210817325] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 09:22:06,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-30 09:22:06,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 11 [2023-11-30 09:22:06,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294468470] [2023-11-30 09:22:06,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 09:22:06,427 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-30 09:22:06,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 09:22:06,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-30 09:22:06,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-11-30 09:22:06,429 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 163 [2023-11-30 09:22:06,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 206 transitions, 1553 flow. Second operand has 5 states, 5 states have (on average 131.8) internal successors, (659), 5 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 09:22:06,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 09:22:06,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 163 [2023-11-30 09:22:06,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 09:22:06,558 INFO L124 PetriNetUnfolderBase]: 101/469 cut-off events. [2023-11-30 09:22:06,558 INFO L125 PetriNetUnfolderBase]: For 2919/2987 co-relation queries the response was YES. [2023-11-30 09:22:06,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1824 conditions, 469 events. 101/469 cut-off events. For 2919/2987 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1842 event pairs, 17 based on Foata normal form. 2/422 useless extension candidates. Maximal degree in co-relation 1088. Up to 163 conditions per place. [2023-11-30 09:22:06,562 INFO L140 encePairwiseOnDemand]: 153/163 looper letters, 18 selfloop transitions, 14 changer transitions 36/201 dead transitions. [2023-11-30 09:22:06,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 201 transitions, 1565 flow [2023-11-30 09:22:06,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-30 09:22:06,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-30 09:22:06,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 800 transitions. [2023-11-30 09:22:06,565 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8179959100204499 [2023-11-30 09:22:06,565 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 800 transitions. [2023-11-30 09:22:06,565 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 800 transitions. [2023-11-30 09:22:06,566 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 09:22:06,566 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 800 transitions. [2023-11-30 09:22:06,568 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 133.33333333333334) internal successors, (800), 6 states have internal predecessors, (800), 0 states have call successors, (0), 0 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 09:22:06,570 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 163.0) internal successors, (1141), 7 states have internal predecessors, (1141), 0 states have call successors, (0), 0 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 09:22:06,570 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 163.0) internal successors, (1141), 7 states have internal predecessors, (1141), 0 states have call successors, (0), 0 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 09:22:06,573 INFO L307 CegarLoopForPetriNet]: 136 programPoint places, 40 predicate places. [2023-11-30 09:22:06,573 INFO L500 AbstractCegarLoop]: Abstraction has has 176 places, 201 transitions, 1565 flow [2023-11-30 09:22:06,573 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 131.8) internal successors, (659), 5 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 09:22:06,573 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 09:22:06,573 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] [2023-11-30 09:22:06,581 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 09:22:06,779 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 09:22:06,779 INFO L425 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-30 09:22:06,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 09:22:06,780 INFO L85 PathProgramCache]: Analyzing trace with hash -2130607873, now seen corresponding path program 2 times [2023-11-30 09:22:06,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 09:22:06,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262427753] [2023-11-30 09:22:06,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:22:06,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 09:22:06,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:22:06,952 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 09:22:06,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 09:22:06,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262427753] [2023-11-30 09:22:06,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262427753] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 09:22:06,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1922526460] [2023-11-30 09:22:06,953 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-30 09:22:06,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 09:22:06,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 09:22:06,954 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 09:22:06,977 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 09:22:07,028 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-30 09:22:07,029 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-30 09:22:07,029 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-30 09:22:07,032 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 09:22:07,160 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 09:22:07,161 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-30 09:22:07,283 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 09:22:07,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1922526460] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-30 09:22:07,283 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-30 09:22:07,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2023-11-30 09:22:07,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280972889] [2023-11-30 09:22:07,284 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-30 09:22:07,284 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-30 09:22:07,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 09:22:07,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-30 09:22:07,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2023-11-30 09:22:07,287 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 163 [2023-11-30 09:22:07,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 201 transitions, 1565 flow. Second operand has 18 states, 18 states have (on average 117.77777777777777) internal successors, (2120), 18 states have internal predecessors, (2120), 0 states have call successors, (0), 0 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 09:22:07,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 09:22:07,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 163 [2023-11-30 09:22:07,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 09:22:07,766 INFO L124 PetriNetUnfolderBase]: 103/472 cut-off events. [2023-11-30 09:22:07,766 INFO L125 PetriNetUnfolderBase]: For 3787/3867 co-relation queries the response was YES. [2023-11-30 09:22:07,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2072 conditions, 472 events. 103/472 cut-off events. For 3787/3867 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1852 event pairs, 16 based on Foata normal form. 1/424 useless extension candidates. Maximal degree in co-relation 1418. Up to 175 conditions per place. [2023-11-30 09:22:07,769 INFO L140 encePairwiseOnDemand]: 149/163 looper letters, 57 selfloop transitions, 32 changer transitions 36/213 dead transitions. [2023-11-30 09:22:07,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 213 transitions, 1907 flow [2023-11-30 09:22:07,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-30 09:22:07,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-11-30 09:22:07,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2819 transitions. [2023-11-30 09:22:07,776 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.72060327198364 [2023-11-30 09:22:07,776 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2819 transitions. [2023-11-30 09:22:07,776 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2819 transitions. [2023-11-30 09:22:07,778 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 09:22:07,778 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2819 transitions. [2023-11-30 09:22:07,783 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 117.45833333333333) internal successors, (2819), 24 states have internal predecessors, (2819), 0 states have call successors, (0), 0 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 09:22:07,789 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 163.0) internal successors, (4075), 25 states have internal predecessors, (4075), 0 states have call successors, (0), 0 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 09:22:07,790 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 163.0) internal successors, (4075), 25 states have internal predecessors, (4075), 0 states have call successors, (0), 0 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 09:22:07,791 INFO L307 CegarLoopForPetriNet]: 136 programPoint places, 62 predicate places. [2023-11-30 09:22:07,791 INFO L500 AbstractCegarLoop]: Abstraction has has 198 places, 213 transitions, 1907 flow [2023-11-30 09:22:07,792 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 117.77777777777777) internal successors, (2120), 18 states have internal predecessors, (2120), 0 states have call successors, (0), 0 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 09:22:07,792 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 09:22:07,793 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] [2023-11-30 09:22:07,801 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-30 09:22:08,001 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 09:22:08,001 INFO L425 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-30 09:22:08,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 09:22:08,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1173836531, now seen corresponding path program 1 times [2023-11-30 09:22:08,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 09:22:08,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638763787] [2023-11-30 09:22:08,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:22:08,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 09:22:08,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:22:08,214 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 09:22:08,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 09:22:08,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638763787] [2023-11-30 09:22:08,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638763787] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 09:22:08,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692011298] [2023-11-30 09:22:08,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:22:08,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 09:22:08,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 09:22:08,216 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 09:22:08,235 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 09:22:08,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:22:08,305 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-30 09:22:08,307 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 09:22:08,532 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-30 09:22:08,533 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-30 09:22:08,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1692011298] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 09:22:08,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-30 09:22:08,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2023-11-30 09:22:08,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274633488] [2023-11-30 09:22:08,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 09:22:08,534 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-30 09:22:08,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 09:22:08,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-30 09:22:08,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2023-11-30 09:22:08,535 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 163 [2023-11-30 09:22:08,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 213 transitions, 1907 flow. Second operand has 7 states, 7 states have (on average 122.14285714285714) internal successors, (855), 7 states have internal predecessors, (855), 0 states have call successors, (0), 0 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 09:22:08,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 09:22:08,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 163 [2023-11-30 09:22:08,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 09:22:08,725 INFO L124 PetriNetUnfolderBase]: 148/614 cut-off events. [2023-11-30 09:22:08,725 INFO L125 PetriNetUnfolderBase]: For 6042/6148 co-relation queries the response was YES. [2023-11-30 09:22:08,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2972 conditions, 614 events. 148/614 cut-off events. For 6042/6148 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2517 event pairs, 13 based on Foata normal form. 1/553 useless extension candidates. Maximal degree in co-relation 2294. Up to 224 conditions per place. [2023-11-30 09:22:08,729 INFO L140 encePairwiseOnDemand]: 151/163 looper letters, 52 selfloop transitions, 11 changer transitions 38/237 dead transitions. [2023-11-30 09:22:08,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 237 transitions, 2479 flow [2023-11-30 09:22:08,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-30 09:22:08,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-30 09:22:08,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1245 transitions. [2023-11-30 09:22:08,732 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7638036809815951 [2023-11-30 09:22:08,732 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1245 transitions. [2023-11-30 09:22:08,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1245 transitions. [2023-11-30 09:22:08,733 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 09:22:08,733 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1245 transitions. [2023-11-30 09:22:08,736 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 124.5) internal successors, (1245), 10 states have internal predecessors, (1245), 0 states have call successors, (0), 0 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 09:22:08,738 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 163.0) internal successors, (1793), 11 states have internal predecessors, (1793), 0 states have call successors, (0), 0 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 09:22:08,739 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 163.0) internal successors, (1793), 11 states have internal predecessors, (1793), 0 states have call successors, (0), 0 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 09:22:08,739 INFO L307 CegarLoopForPetriNet]: 136 programPoint places, 71 predicate places. [2023-11-30 09:22:08,739 INFO L500 AbstractCegarLoop]: Abstraction has has 207 places, 237 transitions, 2479 flow [2023-11-30 09:22:08,740 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 122.14285714285714) internal successors, (855), 7 states have internal predecessors, (855), 0 states have call successors, (0), 0 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 09:22:08,740 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 09:22:08,740 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 09:22:08,753 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 09:22:08,946 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-30 09:22:08,946 INFO L425 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-30 09:22:08,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 09:22:08,947 INFO L85 PathProgramCache]: Analyzing trace with hash -139860553, now seen corresponding path program 1 times [2023-11-30 09:22:08,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 09:22:08,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097390135] [2023-11-30 09:22:08,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:22:08,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 09:22:08,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:22:09,748 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 09:22:09,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 09:22:09,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097390135] [2023-11-30 09:22:09,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097390135] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 09:22:09,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305579542] [2023-11-30 09:22:09,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:22:09,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 09:22:09,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 09:22:09,750 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 09:22:09,772 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 09:22:09,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:22:09,840 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 40 conjunts are in the unsatisfiable core [2023-11-30 09:22:09,845 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 09:22:09,881 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-30 09:22:09,918 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-30 09:22:09,918 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 13 [2023-11-30 09:22:10,338 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-30 09:22:10,338 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2023-11-30 09:22:10,505 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-30 09:22:10,889 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-30 09:22:10,970 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-30 09:22:11,252 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 09:22:11,253 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-30 09:22:12,260 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-30 09:22:12,261 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 51 [2023-11-30 09:22:12,271 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-30 09:22:12,272 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 324 treesize of output 300 [2023-11-30 09:22:12,287 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-30 09:22:12,287 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 98 treesize of output 94 [2023-11-30 09:22:12,299 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-30 09:22:12,299 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 97 treesize of output 81 [2023-11-30 09:22:15,300 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 09:22:15,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1305579542] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-30 09:22:15,300 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-30 09:22:15,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 22, 22] total 61 [2023-11-30 09:22:15,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168773647] [2023-11-30 09:22:15,301 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-30 09:22:15,301 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2023-11-30 09:22:15,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 09:22:15,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2023-11-30 09:22:15,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=685, Invalid=3076, Unknown=21, NotChecked=0, Total=3782 [2023-11-30 09:22:15,310 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 163 [2023-11-30 09:22:15,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 237 transitions, 2479 flow. Second operand has 62 states, 62 states have (on average 76.48387096774194) internal successors, (4742), 62 states have internal predecessors, (4742), 0 states have call successors, (0), 0 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 09:22:15,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 09:22:15,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 163 [2023-11-30 09:22:15,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 09:22:21,431 INFO L124 PetriNetUnfolderBase]: 1716/4020 cut-off events. [2023-11-30 09:22:21,431 INFO L125 PetriNetUnfolderBase]: For 59960/60558 co-relation queries the response was YES. [2023-11-30 09:22:21,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23361 conditions, 4020 events. 1716/4020 cut-off events. For 59960/60558 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 29862 event pairs, 104 based on Foata normal form. 50/3707 useless extension candidates. Maximal degree in co-relation 19283. Up to 1616 conditions per place. [2023-11-30 09:22:21,469 INFO L140 encePairwiseOnDemand]: 126/163 looper letters, 361 selfloop transitions, 155 changer transitions 104/677 dead transitions. [2023-11-30 09:22:21,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 677 transitions, 10147 flow [2023-11-30 09:22:21,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2023-11-30 09:22:21,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2023-11-30 09:22:21,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 6457 transitions. [2023-11-30 09:22:21,485 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.48905551768537453 [2023-11-30 09:22:21,485 INFO L72 ComplementDD]: Start complementDD. Operand 81 states and 6457 transitions. [2023-11-30 09:22:21,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 81 states and 6457 transitions. [2023-11-30 09:22:21,490 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 09:22:21,491 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 81 states and 6457 transitions. [2023-11-30 09:22:21,511 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 82 states, 81 states have (on average 79.71604938271605) internal successors, (6457), 81 states have internal predecessors, (6457), 0 states have call successors, (0), 0 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 09:22:21,536 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 82 states, 82 states have (on average 163.0) internal successors, (13366), 82 states have internal predecessors, (13366), 0 states have call successors, (0), 0 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 09:22:21,539 INFO L81 ComplementDD]: Finished complementDD. Result has 82 states, 82 states have (on average 163.0) internal successors, (13366), 82 states have internal predecessors, (13366), 0 states have call successors, (0), 0 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 09:22:21,539 INFO L307 CegarLoopForPetriNet]: 136 programPoint places, 151 predicate places. [2023-11-30 09:22:21,539 INFO L500 AbstractCegarLoop]: Abstraction has has 287 places, 677 transitions, 10147 flow [2023-11-30 09:22:21,541 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 76.48387096774194) internal successors, (4742), 62 states have internal predecessors, (4742), 0 states have call successors, (0), 0 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 09:22:21,541 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 09:22:21,541 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 09:22:21,556 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 09:22:21,748 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 09:22:21,749 INFO L425 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-30 09:22:21,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 09:22:21,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1201079917, now seen corresponding path program 1 times [2023-11-30 09:22:21,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 09:22:21,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058635765] [2023-11-30 09:22:21,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:22:21,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 09:22:21,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:22:21,809 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-30 09:22:21,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 09:22:21,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058635765] [2023-11-30 09:22:21,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058635765] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 09:22:21,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 09:22:21,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-30 09:22:21,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383273972] [2023-11-30 09:22:21,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 09:22:21,811 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 09:22:21,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 09:22:21,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 09:22:21,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 09:22:21,812 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 163 [2023-11-30 09:22:21,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 677 transitions, 10147 flow. Second operand has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 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 09:22:21,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 09:22:21,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 163 [2023-11-30 09:22:21,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 09:22:22,383 INFO L124 PetriNetUnfolderBase]: 1388/3276 cut-off events. [2023-11-30 09:22:22,384 INFO L125 PetriNetUnfolderBase]: For 85922/86998 co-relation queries the response was YES. [2023-11-30 09:22:22,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20047 conditions, 3276 events. 1388/3276 cut-off events. For 85922/86998 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 22095 event pairs, 78 based on Foata normal form. 118/3080 useless extension candidates. Maximal degree in co-relation 10613. Up to 1304 conditions per place. [2023-11-30 09:22:22,429 INFO L140 encePairwiseOnDemand]: 160/163 looper letters, 163 selfloop transitions, 2 changer transitions 86/538 dead transitions. [2023-11-30 09:22:22,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 538 transitions, 8137 flow [2023-11-30 09:22:22,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 09:22:22,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 09:22:22,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 433 transitions. [2023-11-30 09:22:22,431 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.885480572597137 [2023-11-30 09:22:22,431 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 433 transitions. [2023-11-30 09:22:22,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 433 transitions. [2023-11-30 09:22:22,431 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 09:22:22,431 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 433 transitions. [2023-11-30 09:22:22,432 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 144.33333333333334) internal successors, (433), 3 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:22:22,434 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 163.0) internal successors, (652), 4 states have internal predecessors, (652), 0 states have call successors, (0), 0 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 09:22:22,434 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 163.0) internal successors, (652), 4 states have internal predecessors, (652), 0 states have call successors, (0), 0 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 09:22:22,435 INFO L307 CegarLoopForPetriNet]: 136 programPoint places, 134 predicate places. [2023-11-30 09:22:22,435 INFO L500 AbstractCegarLoop]: Abstraction has has 270 places, 538 transitions, 8137 flow [2023-11-30 09:22:22,436 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 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 09:22:22,436 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 09:22:22,436 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 09:22:22,436 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-30 09:22:22,436 INFO L425 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-30 09:22:22,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 09:22:22,436 INFO L85 PathProgramCache]: Analyzing trace with hash 822320803, now seen corresponding path program 1 times [2023-11-30 09:22:22,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 09:22:22,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897325115] [2023-11-30 09:22:22,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:22:22,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 09:22:22,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:22:24,185 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 09:22:24,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 09:22:24,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897325115] [2023-11-30 09:22:24,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897325115] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 09:22:24,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487307557] [2023-11-30 09:22:24,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:22:24,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 09:22:24,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 09:22:24,187 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 09:22:24,193 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 09:22:24,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:22:24,287 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-30 09:22:24,289 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 09:22:24,920 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 09:22:24,920 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-30 09:22:25,010 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-30 09:22:25,010 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2023-11-30 09:22:25,840 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 09:22:25,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487307557] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-30 09:22:25,841 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-30 09:22:25,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 15, 15] total 49 [2023-11-30 09:22:25,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423201750] [2023-11-30 09:22:25,841 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-30 09:22:25,842 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-11-30 09:22:25,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 09:22:25,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-11-30 09:22:25,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=427, Invalid=2023, Unknown=0, NotChecked=0, Total=2450 [2023-11-30 09:22:25,846 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 163 [2023-11-30 09:22:25,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 538 transitions, 8137 flow. Second operand has 50 states, 50 states have (on average 87.36) internal successors, (4368), 50 states have internal predecessors, (4368), 0 states have call successors, (0), 0 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 09:22:25,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 09:22:25,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 163 [2023-11-30 09:22:25,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 09:22:28,273 INFO L124 PetriNetUnfolderBase]: 2009/4629 cut-off events. [2023-11-30 09:22:28,273 INFO L125 PetriNetUnfolderBase]: For 129184/130761 co-relation queries the response was YES. [2023-11-30 09:22:28,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31818 conditions, 4629 events. 2009/4629 cut-off events. For 129184/130761 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 33197 event pairs, 115 based on Foata normal form. 7/4205 useless extension candidates. Maximal degree in co-relation 16767. Up to 1898 conditions per place. [2023-11-30 09:22:28,325 INFO L140 encePairwiseOnDemand]: 131/163 looper letters, 462 selfloop transitions, 91 changer transitions 118/736 dead transitions. [2023-11-30 09:22:28,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 736 transitions, 13138 flow [2023-11-30 09:22:28,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-11-30 09:22:28,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2023-11-30 09:22:28,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 3853 transitions. [2023-11-30 09:22:28,332 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5497217862747895 [2023-11-30 09:22:28,332 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 3853 transitions. [2023-11-30 09:22:28,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 3853 transitions. [2023-11-30 09:22:28,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 09:22:28,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 3853 transitions. [2023-11-30 09:22:28,339 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 89.6046511627907) internal successors, (3853), 43 states have internal predecessors, (3853), 0 states have call successors, (0), 0 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 09:22:28,347 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 163.0) internal successors, (7172), 44 states have internal predecessors, (7172), 0 states have call successors, (0), 0 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 09:22:28,348 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 163.0) internal successors, (7172), 44 states have internal predecessors, (7172), 0 states have call successors, (0), 0 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 09:22:28,348 INFO L307 CegarLoopForPetriNet]: 136 programPoint places, 174 predicate places. [2023-11-30 09:22:28,349 INFO L500 AbstractCegarLoop]: Abstraction has has 310 places, 736 transitions, 13138 flow [2023-11-30 09:22:28,350 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 87.36) internal successors, (4368), 50 states have internal predecessors, (4368), 0 states have call successors, (0), 0 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 09:22:28,350 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 09:22:28,350 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 09:22:28,359 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 09:22:28,559 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 09:22:28,559 INFO L425 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-30 09:22:28,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 09:22:28,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1169790459, now seen corresponding path program 1 times [2023-11-30 09:22:28,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 09:22:28,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236276242] [2023-11-30 09:22:28,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:22:28,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 09:22:28,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:22:28,778 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 09:22:28,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 09:22:28,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236276242] [2023-11-30 09:22:28,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236276242] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 09:22:28,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792491469] [2023-11-30 09:22:28,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:22:28,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 09:22:28,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 09:22:28,780 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 09:22:28,810 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 09:22:28,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:22:28,874 INFO L262 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-30 09:22:28,876 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 09:22:29,151 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 09:22:29,152 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-30 09:22:29,659 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 09:22:29,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1792491469] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-30 09:22:29,659 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-30 09:22:29,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 29 [2023-11-30 09:22:29,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431700273] [2023-11-30 09:22:29,660 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-30 09:22:29,660 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-30 09:22:29,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 09:22:29,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-30 09:22:29,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=715, Unknown=0, NotChecked=0, Total=870 [2023-11-30 09:22:29,663 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 163 [2023-11-30 09:22:29,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 736 transitions, 13138 flow. Second operand has 30 states, 30 states have (on average 108.43333333333334) internal successors, (3253), 30 states have internal predecessors, (3253), 0 states have call successors, (0), 0 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 09:22:29,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 09:22:29,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 163 [2023-11-30 09:22:29,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 09:22:31,197 INFO L124 PetriNetUnfolderBase]: 2488/5627 cut-off events. [2023-11-30 09:22:31,198 INFO L125 PetriNetUnfolderBase]: For 179419/181407 co-relation queries the response was YES. [2023-11-30 09:22:31,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41879 conditions, 5627 events. 2488/5627 cut-off events. For 179419/181407 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 40163 event pairs, 126 based on Foata normal form. 3/5147 useless extension candidates. Maximal degree in co-relation 21072. Up to 2439 conditions per place. [2023-11-30 09:22:31,258 INFO L140 encePairwiseOnDemand]: 140/163 looper letters, 464 selfloop transitions, 65 changer transitions 126/871 dead transitions. [2023-11-30 09:22:31,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 871 transitions, 17594 flow [2023-11-30 09:22:31,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-11-30 09:22:31,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2023-11-30 09:22:31,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 4205 transitions. [2023-11-30 09:22:31,263 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6788827897965773 [2023-11-30 09:22:31,263 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 4205 transitions. [2023-11-30 09:22:31,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 4205 transitions. [2023-11-30 09:22:31,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 09:22:31,265 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 4205 transitions. [2023-11-30 09:22:31,270 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 110.65789473684211) internal successors, (4205), 38 states have internal predecessors, (4205), 0 states have call successors, (0), 0 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 09:22:31,276 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 163.0) internal successors, (6357), 39 states have internal predecessors, (6357), 0 states have call successors, (0), 0 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 09:22:31,277 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 163.0) internal successors, (6357), 39 states have internal predecessors, (6357), 0 states have call successors, (0), 0 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 09:22:31,277 INFO L307 CegarLoopForPetriNet]: 136 programPoint places, 211 predicate places. [2023-11-30 09:22:31,277 INFO L500 AbstractCegarLoop]: Abstraction has has 347 places, 871 transitions, 17594 flow [2023-11-30 09:22:31,278 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 108.43333333333334) internal successors, (3253), 30 states have internal predecessors, (3253), 0 states have call successors, (0), 0 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 09:22:31,278 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 09:22:31,278 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 09:22:31,285 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 09:22:31,485 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,SelfDestructingSolverStorable13 [2023-11-30 09:22:31,485 INFO L425 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-30 09:22:31,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 09:22:31,486 INFO L85 PathProgramCache]: Analyzing trace with hash 137586111, now seen corresponding path program 1 times [2023-11-30 09:22:31,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 09:22:31,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957619389] [2023-11-30 09:22:31,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:22:31,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 09:22:31,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:22:31,643 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-30 09:22:31,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 09:22:31,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957619389] [2023-11-30 09:22:31,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957619389] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 09:22:31,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1920196762] [2023-11-30 09:22:31,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:22:31,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 09:22:31,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 09:22:31,645 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 09:22:31,664 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 09:22:31,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:22:31,733 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-30 09:22:31,734 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 09:22:32,065 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 09:22:32,065 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-30 09:22:32,692 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 09:22:32,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1920196762] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-30 09:22:32,692 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-30 09:22:32,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 14, 14] total 27 [2023-11-30 09:22:32,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528974780] [2023-11-30 09:22:32,692 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-30 09:22:32,693 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-30 09:22:32,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 09:22:32,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-30 09:22:32,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=581, Unknown=0, NotChecked=0, Total=702 [2023-11-30 09:22:32,697 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 163 [2023-11-30 09:22:32,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 871 transitions, 17594 flow. Second operand has 27 states, 27 states have (on average 102.25925925925925) internal successors, (2761), 27 states have internal predecessors, (2761), 0 states have call successors, (0), 0 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 09:22:32,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 09:22:32,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 163 [2023-11-30 09:22:32,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 09:22:35,642 INFO L124 PetriNetUnfolderBase]: 4049/9006 cut-off events. [2023-11-30 09:22:35,642 INFO L125 PetriNetUnfolderBase]: For 341303/344555 co-relation queries the response was YES. [2023-11-30 09:22:35,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71130 conditions, 9006 events. 4049/9006 cut-off events. For 341303/344555 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 70808 event pairs, 283 based on Foata normal form. 28/8212 useless extension candidates. Maximal degree in co-relation 28204. Up to 3915 conditions per place. [2023-11-30 09:22:35,729 INFO L140 encePairwiseOnDemand]: 131/163 looper letters, 500 selfloop transitions, 182 changer transitions 412/1243 dead transitions. [2023-11-30 09:22:35,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 1243 transitions, 29410 flow [2023-11-30 09:22:35,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-11-30 09:22:35,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2023-11-30 09:22:35,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 5816 transitions. [2023-11-30 09:22:35,737 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6259821332472285 [2023-11-30 09:22:35,737 INFO L72 ComplementDD]: Start complementDD. Operand 57 states and 5816 transitions. [2023-11-30 09:22:35,737 INFO L73 IsDeterministic]: Start isDeterministic. Operand 57 states and 5816 transitions. [2023-11-30 09:22:35,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 09:22:35,739 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 57 states and 5816 transitions. [2023-11-30 09:22:35,747 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 58 states, 57 states have (on average 102.03508771929825) internal successors, (5816), 57 states have internal predecessors, (5816), 0 states have call successors, (0), 0 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 09:22:35,758 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 58 states, 58 states have (on average 163.0) internal successors, (9454), 58 states have internal predecessors, (9454), 0 states have call successors, (0), 0 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 09:22:35,760 INFO L81 ComplementDD]: Finished complementDD. Result has 58 states, 58 states have (on average 163.0) internal successors, (9454), 58 states have internal predecessors, (9454), 0 states have call successors, (0), 0 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 09:22:35,760 INFO L307 CegarLoopForPetriNet]: 136 programPoint places, 259 predicate places. [2023-11-30 09:22:35,760 INFO L500 AbstractCegarLoop]: Abstraction has has 395 places, 1243 transitions, 29410 flow [2023-11-30 09:22:35,761 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 102.25925925925925) internal successors, (2761), 27 states have internal predecessors, (2761), 0 states have call successors, (0), 0 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 09:22:35,761 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 09:22:35,761 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 09:22:35,771 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 09:22:35,967 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,SelfDestructingSolverStorable14 [2023-11-30 09:22:35,967 INFO L425 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-30 09:22:35,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 09:22:35,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1290062949, now seen corresponding path program 1 times [2023-11-30 09:22:35,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 09:22:35,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307628404] [2023-11-30 09:22:35,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:22:35,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 09:22:36,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:22:36,135 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-30 09:22:36,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 09:22:36,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307628404] [2023-11-30 09:22:36,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307628404] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 09:22:36,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 09:22:36,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-30 09:22:36,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110473803] [2023-11-30 09:22:36,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 09:22:36,137 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-30 09:22:36,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 09:22:36,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-30 09:22:36,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-30 09:22:36,138 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 163 [2023-11-30 09:22:36,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 1243 transitions, 29410 flow. Second operand has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:22:36,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 09:22:36,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 163 [2023-11-30 09:22:36,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 09:22:38,293 INFO L124 PetriNetUnfolderBase]: 3624/9278 cut-off events. [2023-11-30 09:22:38,293 INFO L125 PetriNetUnfolderBase]: For 298194/302551 co-relation queries the response was YES. [2023-11-30 09:22:38,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67845 conditions, 9278 events. 3624/9278 cut-off events. For 298194/302551 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 79847 event pairs, 250 based on Foata normal form. 492/9067 useless extension candidates. Maximal degree in co-relation 32893. Up to 3401 conditions per place. [2023-11-30 09:22:38,369 INFO L140 encePairwiseOnDemand]: 159/163 looper letters, 453 selfloop transitions, 4 changer transitions 331/1121 dead transitions. [2023-11-30 09:22:38,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 1121 transitions, 27491 flow [2023-11-30 09:22:38,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-30 09:22:38,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-30 09:22:38,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 570 transitions. [2023-11-30 09:22:38,370 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8742331288343558 [2023-11-30 09:22:38,371 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 570 transitions. [2023-11-30 09:22:38,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 570 transitions. [2023-11-30 09:22:38,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 09:22:38,371 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 570 transitions. [2023-11-30 09:22:38,372 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 142.5) internal successors, (570), 4 states have internal predecessors, (570), 0 states have call successors, (0), 0 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 09:22:38,372 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 163.0) internal successors, (815), 5 states have internal predecessors, (815), 0 states have call successors, (0), 0 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 09:22:38,373 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 163.0) internal successors, (815), 5 states have internal predecessors, (815), 0 states have call successors, (0), 0 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 09:22:38,373 INFO L307 CegarLoopForPetriNet]: 136 programPoint places, 252 predicate places. [2023-11-30 09:22:38,373 INFO L500 AbstractCegarLoop]: Abstraction has has 388 places, 1121 transitions, 27491 flow [2023-11-30 09:22:38,373 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 09:22:38,373 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 09:22:38,374 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-30 09:22:38,374 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-30 09:22:38,374 INFO L425 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-30 09:22:38,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 09:22:38,374 INFO L85 PathProgramCache]: Analyzing trace with hash -803965306, now seen corresponding path program 1 times [2023-11-30 09:22:38,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 09:22:38,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587234288] [2023-11-30 09:22:38,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:22:38,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 09:22:38,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:22:40,131 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 09:22:40,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 09:22:40,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587234288] [2023-11-30 09:22:40,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587234288] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 09:22:40,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1966097577] [2023-11-30 09:22:40,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:22:40,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 09:22:40,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 09:22:40,136 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 09:22:40,141 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 09:22:40,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:22:40,242 INFO L262 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 55 conjunts are in the unsatisfiable core [2023-11-30 09:22:40,246 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 09:22:40,259 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-30 09:22:40,285 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-11-30 09:22:40,285 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2023-11-30 09:22:40,631 INFO L349 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2023-11-30 09:22:40,632 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 16 treesize of output 18 [2023-11-30 09:22:40,912 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-30 09:22:41,196 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-30 09:22:41,259 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-30 09:22:42,024 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 09:22:42,024 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-30 09:22:43,664 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-30 09:22:43,665 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 124 treesize of output 88 [2023-11-30 09:22:43,688 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-30 09:22:43,689 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 270 treesize of output 272 [2023-11-30 09:22:43,718 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-30 09:22:43,718 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 236 treesize of output 220 [2023-11-30 09:22:43,746 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-30 09:22:43,747 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 155 treesize of output 165 [2023-11-30 09:22:46,095 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 09:22:46,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1966097577] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-30 09:22:46,096 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-30 09:22:46,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 33, 31] total 91 [2023-11-30 09:22:46,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349251324] [2023-11-30 09:22:46,096 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-30 09:22:46,096 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2023-11-30 09:22:46,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 09:22:46,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2023-11-30 09:22:46,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1055, Invalid=7285, Unknown=32, NotChecked=0, Total=8372 [2023-11-30 09:22:46,101 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 163 [2023-11-30 09:22:46,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 1121 transitions, 27491 flow. Second operand has 92 states, 92 states have (on average 72.51086956521739) internal successors, (6671), 92 states have internal predecessors, (6671), 0 states have call successors, (0), 0 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 09:22:46,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 09:22:46,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 163 [2023-11-30 09:22:46,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 09:24:01,071 INFO L124 PetriNetUnfolderBase]: 22832/58020 cut-off events. [2023-11-30 09:24:01,071 INFO L125 PetriNetUnfolderBase]: For 1810265/1834722 co-relation queries the response was YES. [2023-11-30 09:24:01,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 439139 conditions, 58020 events. 22832/58020 cut-off events. For 1810265/1834722 co-relation queries the response was YES. Maximal size of possible extension queue 1287. Compared 676548 event pairs, 1560 based on Foata normal form. 2039/55805 useless extension candidates. Maximal degree in co-relation 362781. Up to 21665 conditions per place. [2023-11-30 09:24:01,915 INFO L140 encePairwiseOnDemand]: 124/163 looper letters, 3767 selfloop transitions, 2624 changer transitions 1071/7528 dead transitions. [2023-11-30 09:24:01,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 873 places, 7528 transitions, 192296 flow [2023-11-30 09:24:01,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 486 states. [2023-11-30 09:24:01,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 486 states. [2023-11-30 09:24:01,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 37209 transitions. [2023-11-30 09:24:01,952 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.46970385518442775 [2023-11-30 09:24:01,952 INFO L72 ComplementDD]: Start complementDD. Operand 486 states and 37209 transitions. [2023-11-30 09:24:01,952 INFO L73 IsDeterministic]: Start isDeterministic. Operand 486 states and 37209 transitions. [2023-11-30 09:24:01,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 09:24:01,962 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 486 states and 37209 transitions. [2023-11-30 09:24:02,014 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 487 states, 486 states have (on average 76.56172839506173) internal successors, (37209), 486 states have internal predecessors, (37209), 0 states have call successors, (0), 0 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 09:24:02,100 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 487 states, 487 states have (on average 163.0) internal successors, (79381), 487 states have internal predecessors, (79381), 0 states have call successors, (0), 0 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 09:24:02,119 INFO L81 ComplementDD]: Finished complementDD. Result has 487 states, 487 states have (on average 163.0) internal successors, (79381), 487 states have internal predecessors, (79381), 0 states have call successors, (0), 0 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 09:24:02,119 INFO L307 CegarLoopForPetriNet]: 136 programPoint places, 737 predicate places. [2023-11-30 09:24:02,120 INFO L500 AbstractCegarLoop]: Abstraction has has 873 places, 7528 transitions, 192296 flow [2023-11-30 09:24:02,121 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 92 states have (on average 72.51086956521739) internal successors, (6671), 92 states have internal predecessors, (6671), 0 states have call successors, (0), 0 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 09:24:02,121 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 09:24:02,121 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-30 09:24:02,129 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-30 09:24:02,326 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,SelfDestructingSolverStorable16 [2023-11-30 09:24:02,327 INFO L425 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-30 09:24:02,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 09:24:02,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1971787468, now seen corresponding path program 2 times [2023-11-30 09:24:02,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 09:24:02,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708051783] [2023-11-30 09:24:02,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:24:02,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 09:24:02,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:24:03,563 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 09:24:03,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 09:24:03,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708051783] [2023-11-30 09:24:03,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708051783] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 09:24:03,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094725049] [2023-11-30 09:24:03,564 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-30 09:24:03,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 09:24:03,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 09:24:03,568 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 09:24:03,571 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 09:24:03,678 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-30 09:24:03,679 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-30 09:24:03,680 INFO L262 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 52 conjunts are in the unsatisfiable core [2023-11-30 09:24:03,684 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 09:24:04,442 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-30 09:24:04,751 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-30 09:24:04,807 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-30 09:24:05,598 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 09:24:05,598 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-30 09:24:07,051 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-30 09:24:07,052 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 124 treesize of output 88 [2023-11-30 09:24:07,076 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-30 09:24:07,076 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 570 treesize of output 538 [2023-11-30 09:24:07,103 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-30 09:24:07,103 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 182 treesize of output 192 [2023-11-30 09:24:07,128 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-30 09:24:07,128 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 181 treesize of output 165 [2023-11-30 09:24:08,966 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 09:24:08,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1094725049] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-30 09:24:08,966 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-30 09:24:08,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 33, 29] total 89 [2023-11-30 09:24:08,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533030714] [2023-11-30 09:24:08,967 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-30 09:24:08,967 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2023-11-30 09:24:08,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 09:24:08,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2023-11-30 09:24:08,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=959, Invalid=7024, Unknown=27, NotChecked=0, Total=8010 [2023-11-30 09:24:08,975 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 163 [2023-11-30 09:24:08,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 873 places, 7528 transitions, 192296 flow. Second operand has 90 states, 90 states have (on average 74.54444444444445) internal successors, (6709), 90 states have internal predecessors, (6709), 0 states have call successors, (0), 0 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 09:24:08,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 09:24:08,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 163 [2023-11-30 09:24:08,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 09:30:59,190 INFO L124 PetriNetUnfolderBase]: 87085/224177 cut-off events. [2023-11-30 09:30:59,190 INFO L125 PetriNetUnfolderBase]: For 7097109/7185706 co-relation queries the response was YES. [2023-11-30 09:31:01,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1796916 conditions, 224177 events. 87085/224177 cut-off events. For 7097109/7185706 co-relation queries the response was YES. Maximal size of possible extension queue 4501. Compared 3146826 event pairs, 6844 based on Foata normal form. 7187/215231 useless extension candidates. Maximal degree in co-relation 1643140. Up to 81886 conditions per place. [2023-11-30 09:31:04,135 INFO L140 encePairwiseOnDemand]: 124/163 looper letters, 17369 selfloop transitions, 15810 changer transitions 3266/36513 dead transitions. [2023-11-30 09:31:04,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1613 places, 36513 transitions, 925156 flow [2023-11-30 09:31:04,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 741 states. [2023-11-30 09:31:04,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 741 states. [2023-11-30 09:31:04,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 741 states to 741 states and 57898 transitions. [2023-11-30 09:31:04,216 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.47935553844497986 [2023-11-30 09:31:04,216 INFO L72 ComplementDD]: Start complementDD. Operand 741 states and 57898 transitions. [2023-11-30 09:31:04,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 741 states and 57898 transitions. [2023-11-30 09:31:04,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 09:31:04,231 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 741 states and 57898 transitions. [2023-11-30 09:31:04,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 742 states, 741 states have (on average 78.13495276653171) internal successors, (57898), 741 states have internal predecessors, (57898), 0 states have call successors, (0), 0 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 09:31:04,756 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 742 states, 742 states have (on average 163.0) internal successors, (120946), 742 states have internal predecessors, (120946), 0 states have call successors, (0), 0 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 09:31:04,780 INFO L81 ComplementDD]: Finished complementDD. Result has 742 states, 742 states have (on average 163.0) internal successors, (120946), 742 states have internal predecessors, (120946), 0 states have call successors, (0), 0 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 09:31:04,780 INFO L307 CegarLoopForPetriNet]: 136 programPoint places, 1477 predicate places. [2023-11-30 09:31:04,781 INFO L500 AbstractCegarLoop]: Abstraction has has 1613 places, 36513 transitions, 925156 flow [2023-11-30 09:31:04,781 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 90 states have (on average 74.54444444444445) internal successors, (6709), 90 states have internal predecessors, (6709), 0 states have call successors, (0), 0 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 09:31:04,782 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 09:31:04,782 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-30 09:31:04,789 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 09:31:04,987 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,SelfDestructingSolverStorable17 [2023-11-30 09:31:04,987 INFO L425 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-30 09:31:04,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 09:31:04,988 INFO L85 PathProgramCache]: Analyzing trace with hash -2106760362, now seen corresponding path program 3 times [2023-11-30 09:31:04,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 09:31:04,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245568857] [2023-11-30 09:31:04,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 09:31:04,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 09:31:05,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 09:31:06,948 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 09:31:06,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 09:31:06,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245568857] [2023-11-30 09:31:06,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245568857] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 09:31:06,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159686174] [2023-11-30 09:31:06,949 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-30 09:31:06,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 09:31:06,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 09:31:06,956 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 09:31:06,959 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 09:31:07,300 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-30 09:31:07,301 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-30 09:31:07,302 INFO L262 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-30 09:31:07,304 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 09:31:08,028 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 1 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-30 09:31:08,028 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-30 09:31:08,475 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-30 09:31:08,476 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 52 treesize of output 54 [2023-11-30 09:31:08,715 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-30 09:31:08,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [159686174] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-30 09:31:08,715 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-30 09:31:08,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 13, 13] total 53 [2023-11-30 09:31:08,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764652241] [2023-11-30 09:31:08,716 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-30 09:31:08,716 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2023-11-30 09:31:08,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 09:31:08,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2023-11-30 09:31:08,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=2576, Unknown=0, NotChecked=0, Total=2862 [2023-11-30 09:31:08,720 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 163 [2023-11-30 09:31:08,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1613 places, 36513 transitions, 925156 flow. Second operand has 54 states, 54 states have (on average 82.85185185185185) internal successors, (4474), 54 states have internal predecessors, (4474), 0 states have call successors, (0), 0 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 09:31:08,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 09:31:08,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 163 [2023-11-30 09:31:08,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2023-11-30 09:33:58,892 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-11-30 09:33:58,893 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-11-30 09:33:58,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 218 states. [2023-11-30 09:33:58,940 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 20 remaining) [2023-11-30 09:33:58,945 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-30 09:33:59,145 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 09:33:59,145 WARN L624 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (54states, 79/163 universal loopers) in iteration 19,while PetriNetUnfolder was constructing finite prefix that currently has 151079 conditions, 18727 events (6164/18726 cut-off events. For 663643/676116 co-relation queries the response was YES. Maximal size of possible extension queue 2650. Compared 251367 event pairs, 333 based on Foata normal form. 559/20311 useless extension candidates. Maximal degree in co-relation 90400. Up to 6567 conditions per place.). [2023-11-30 09:33:59,147 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 20 remaining) [2023-11-30 09:33:59,147 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 20 remaining) [2023-11-30 09:33:59,147 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 20 remaining) [2023-11-30 09:33:59,147 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 20 remaining) [2023-11-30 09:33:59,147 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 20 remaining) [2023-11-30 09:33:59,147 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 20 remaining) [2023-11-30 09:33:59,147 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 20 remaining) [2023-11-30 09:33:59,147 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 20 remaining) [2023-11-30 09:33:59,147 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 20 remaining) [2023-11-30 09:33:59,147 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 20 remaining) [2023-11-30 09:33:59,147 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 20 remaining) [2023-11-30 09:33:59,148 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 20 remaining) [2023-11-30 09:33:59,148 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 20 remaining) [2023-11-30 09:33:59,148 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 20 remaining) [2023-11-30 09:33:59,148 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 20 remaining) [2023-11-30 09:33:59,148 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 20 remaining) [2023-11-30 09:33:59,148 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 20 remaining) [2023-11-30 09:33:59,148 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 20 remaining) [2023-11-30 09:33:59,148 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 20 remaining) [2023-11-30 09:33:59,149 INFO L457 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 09:33:59,152 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-30 09:33:59,153 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-11-30 09:33:59,155 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 09:33:59 BasicIcfg [2023-11-30 09:33:59,155 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-30 09:33:59,156 INFO L158 Benchmark]: Toolchain (without parser) took 717281.26ms. Allocated memory was 557.8MB in the beginning and 7.0GB in the end (delta: 6.5GB). Free memory was 503.6MB in the beginning and 2.4GB in the end (delta: -1.9GB). Peak memory consumption was 4.5GB. Max. memory is 16.0GB. [2023-11-30 09:33:59,156 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 337.6MB. Free memory is still 287.7MB. There was no memory consumed. Max. memory is 16.0GB. [2023-11-30 09:33:59,156 INFO L158 Benchmark]: CACSL2BoogieTranslator took 202.01ms. Allocated memory is still 557.8MB. Free memory was 503.3MB in the beginning and 491.6MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-11-30 09:33:59,156 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.42ms. Allocated memory is still 557.8MB. Free memory was 491.6MB in the beginning and 489.6MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.0GB. [2023-11-30 09:33:59,156 INFO L158 Benchmark]: Boogie Preprocessor took 29.07ms. Allocated memory is still 557.8MB. Free memory was 489.6MB in the beginning and 488.0MB in the end (delta: 1.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-11-30 09:33:59,157 INFO L158 Benchmark]: RCFGBuilder took 449.59ms. Allocated memory is still 557.8MB. Free memory was 488.0MB in the beginning and 514.9MB in the end (delta: -26.9MB). Peak memory consumption was 24.2MB. Max. memory is 16.0GB. [2023-11-30 09:33:59,157 INFO L158 Benchmark]: TraceAbstraction took 716557.69ms. Allocated memory was 557.8MB in the beginning and 7.0GB in the end (delta: 6.5GB). Free memory was 514.2MB in the beginning and 2.4GB in the end (delta: -1.9GB). Peak memory consumption was 4.5GB. Max. memory is 16.0GB. [2023-11-30 09:33:59,158 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 337.6MB. Free memory is still 287.7MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 202.01ms. Allocated memory is still 557.8MB. Free memory was 503.3MB in the beginning and 491.6MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 38.42ms. Allocated memory is still 557.8MB. Free memory was 491.6MB in the beginning and 489.6MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.0GB. * Boogie Preprocessor took 29.07ms. Allocated memory is still 557.8MB. Free memory was 489.6MB in the beginning and 488.0MB in the end (delta: 1.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * RCFGBuilder took 449.59ms. Allocated memory is still 557.8MB. Free memory was 488.0MB in the beginning and 514.9MB in the end (delta: -26.9MB). Peak memory consumption was 24.2MB. Max. memory is 16.0GB. * TraceAbstraction took 716557.69ms. Allocated memory was 557.8MB in the beginning and 7.0GB in the end (delta: 6.5GB). Free memory was 514.2MB in the beginning and 2.4GB in the end (delta: -1.9GB). Peak memory consumption was 4.5GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 54]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (54states, 79/163 universal loopers) in iteration 19,while PetriNetUnfolder was constructing finite prefix that currently has 151079 conditions, 18727 events (6164/18726 cut-off events. For 663643/676116 co-relation queries the response was YES. Maximal size of possible extension queue 2650. Compared 251367 event pairs, 333 based on Foata normal form. 559/20311 useless extension candidates. Maximal degree in co-relation 90400. Up to 6567 conditions per place.). - TimeoutResultAtElement [Line: 53]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (54states, 79/163 universal loopers) in iteration 19,while PetriNetUnfolder was constructing finite prefix that currently has 151079 conditions, 18727 events (6164/18726 cut-off events. For 663643/676116 co-relation queries the response was YES. Maximal size of possible extension queue 2650. Compared 251367 event pairs, 333 based on Foata normal form. 559/20311 useless extension candidates. Maximal degree in co-relation 90400. Up to 6567 conditions per place.). - TimeoutResultAtElement [Line: 53]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (54states, 79/163 universal loopers) in iteration 19,while PetriNetUnfolder was constructing finite prefix that currently has 151079 conditions, 18727 events (6164/18726 cut-off events. For 663643/676116 co-relation queries the response was YES. Maximal size of possible extension queue 2650. Compared 251367 event pairs, 333 based on Foata normal form. 559/20311 useless extension candidates. Maximal degree in co-relation 90400. Up to 6567 conditions per place.). - TimeoutResultAtElement [Line: 54]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (54states, 79/163 universal loopers) in iteration 19,while PetriNetUnfolder was constructing finite prefix that currently has 151079 conditions, 18727 events (6164/18726 cut-off events. For 663643/676116 co-relation queries the response was YES. Maximal size of possible extension queue 2650. Compared 251367 event pairs, 333 based on Foata normal form. 559/20311 useless extension candidates. Maximal degree in co-relation 90400. Up to 6567 conditions per place.). - TimeoutResultAtElement [Line: 74]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (54states, 79/163 universal loopers) in iteration 19,while PetriNetUnfolder was constructing finite prefix that currently has 151079 conditions, 18727 events (6164/18726 cut-off events. For 663643/676116 co-relation queries the response was YES. Maximal size of possible extension queue 2650. Compared 251367 event pairs, 333 based on Foata normal form. 559/20311 useless extension candidates. Maximal degree in co-relation 90400. Up to 6567 conditions per place.). - TimeoutResultAtElement [Line: 74]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (54states, 79/163 universal loopers) in iteration 19,while PetriNetUnfolder was constructing finite prefix that currently has 151079 conditions, 18727 events (6164/18726 cut-off events. For 663643/676116 co-relation queries the response was YES. Maximal size of possible extension queue 2650. Compared 251367 event pairs, 333 based on Foata normal form. 559/20311 useless extension candidates. Maximal degree in co-relation 90400. Up to 6567 conditions per place.). - TimeoutResultAtElement [Line: 81]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (54states, 79/163 universal loopers) in iteration 19,while PetriNetUnfolder was constructing finite prefix that currently has 151079 conditions, 18727 events (6164/18726 cut-off events. For 663643/676116 co-relation queries the response was YES. Maximal size of possible extension queue 2650. Compared 251367 event pairs, 333 based on Foata normal form. 559/20311 useless extension candidates. Maximal degree in co-relation 90400. Up to 6567 conditions per place.). - TimeoutResultAtElement [Line: 81]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (54states, 79/163 universal loopers) in iteration 19,while PetriNetUnfolder was constructing finite prefix that currently has 151079 conditions, 18727 events (6164/18726 cut-off events. For 663643/676116 co-relation queries the response was YES. Maximal size of possible extension queue 2650. Compared 251367 event pairs, 333 based on Foata normal form. 559/20311 useless extension candidates. Maximal degree in co-relation 90400. Up to 6567 conditions per place.). - TimeoutResultAtElement [Line: 115]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (54states, 79/163 universal loopers) in iteration 19,while PetriNetUnfolder was constructing finite prefix that currently has 151079 conditions, 18727 events (6164/18726 cut-off events. For 663643/676116 co-relation queries the response was YES. Maximal size of possible extension queue 2650. Compared 251367 event pairs, 333 based on Foata normal form. 559/20311 useless extension candidates. Maximal degree in co-relation 90400. Up to 6567 conditions per place.). - TimeoutResultAtElement [Line: 115]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (54states, 79/163 universal loopers) in iteration 19,while PetriNetUnfolder was constructing finite prefix that currently has 151079 conditions, 18727 events (6164/18726 cut-off events. For 663643/676116 co-relation queries the response was YES. Maximal size of possible extension queue 2650. Compared 251367 event pairs, 333 based on Foata normal form. 559/20311 useless extension candidates. Maximal degree in co-relation 90400. Up to 6567 conditions per place.). - TimeoutResultAtElement [Line: 100]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (54states, 79/163 universal loopers) in iteration 19,while PetriNetUnfolder was constructing finite prefix that currently has 151079 conditions, 18727 events (6164/18726 cut-off events. For 663643/676116 co-relation queries the response was YES. Maximal size of possible extension queue 2650. Compared 251367 event pairs, 333 based on Foata normal form. 559/20311 useless extension candidates. Maximal degree in co-relation 90400. Up to 6567 conditions per place.). - TimeoutResultAtElement [Line: 99]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (54states, 79/163 universal loopers) in iteration 19,while PetriNetUnfolder was constructing finite prefix that currently has 151079 conditions, 18727 events (6164/18726 cut-off events. For 663643/676116 co-relation queries the response was YES. Maximal size of possible extension queue 2650. Compared 251367 event pairs, 333 based on Foata normal form. 559/20311 useless extension candidates. Maximal degree in co-relation 90400. Up to 6567 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 204 locations, 20 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: 716.4s, OverallIterations: 19, TraceHistogramMax: 5, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 680.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 469 mSolverCounterUnknown, 16703 SdHoareTripleChecker+Valid, 34.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 16703 mSDsluCounter, 9330 SdHoareTripleChecker+Invalid, 30.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8901 mSDsCounter, 1672 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 56909 IncrementalHoareTripleChecker+Invalid, 59050 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1672 mSolverCounterUnsat, 429 mSDtfsCounter, 56909 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 469 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4125 GetRequests, 1997 SyntacticMatches, 6 SemanticMatches, 2122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 500054 ImplicationChecksByTransitivity, 146.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=925156occurred in iteration=18, InterpolantAutomatonStates: 1541, 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, 0.9s SatisfiabilityAnalysisTime, 31.3s InterpolantComputationTime, 3085 NumberOfCodeBlocks, 3035 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 4058 ConstructedInterpolants, 123 QuantifiedInterpolants, 43205 SizeOfPredicates, 173 NumberOfNonLiveVariables, 2618 ConjunctsInSsa, 242 ConjunctsInUnsatCore, 40 InterpolantComputations, 10 PerfectInterpolantSequences, 238/783 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown