/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/pthread-deagle/circular_buffer_bad.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-175f719-m [2023-11-30 10:12:43,825 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-30 10:12:43,910 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2023-11-30 10:12:43,938 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-30 10:12:43,939 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-30 10:12:43,940 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-30 10:12:43,940 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-30 10:12:43,940 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-30 10:12:43,941 INFO L153 SettingsManager]: * Use SBE=true [2023-11-30 10:12:43,942 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-30 10:12:43,943 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-30 10:12:43,943 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-30 10:12:43,943 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-30 10:12:43,943 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-30 10:12:43,943 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-30 10:12:43,944 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-30 10:12:43,944 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-30 10:12:43,944 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-30 10:12:43,944 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-30 10:12:43,945 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-30 10:12:43,945 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-30 10:12:43,946 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-30 10:12:43,946 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-30 10:12:43,946 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-30 10:12:43,947 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-30 10:12:43,947 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-30 10:12:43,947 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-30 10:12:43,947 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-30 10:12:43,947 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-30 10:12:43,948 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-30 10:12:43,949 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-30 10:12:43,949 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-30 10:12:43,949 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-30 10:12:43,949 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-11-30 10:12:44,165 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-30 10:12:44,181 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-30 10:12:44,183 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-30 10:12:44,184 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-30 10:12:44,188 INFO L274 PluginConnector]: CDTParser initialized [2023-11-30 10:12:44,189 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-deagle/circular_buffer_bad.i [2023-11-30 10:12:45,233 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-30 10:12:45,457 INFO L384 CDTParser]: Found 1 translation units. [2023-11-30 10:12:45,457 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/circular_buffer_bad.i [2023-11-30 10:12:45,479 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a7703761/b9f455e1be3f49b69199a2ece3455766/FLAG0433256bd [2023-11-30 10:12:45,493 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a7703761/b9f455e1be3f49b69199a2ece3455766 [2023-11-30 10:12:45,496 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-30 10:12:45,497 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-30 10:12:45,500 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-30 10:12:45,500 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-30 10:12:45,504 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-30 10:12:45,504 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 10:12:45" (1/1) ... [2023-11-30 10:12:45,506 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@248bcc94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 10:12:45, skipping insertion in model container [2023-11-30 10:12:45,506 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 10:12:45" (1/1) ... [2023-11-30 10:12:45,561 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-30 10:12:45,871 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-30 10:12:45,884 INFO L202 MainTranslator]: Completed pre-run [2023-11-30 10:12:45,930 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-30 10:12:45,964 INFO L206 MainTranslator]: Completed translation [2023-11-30 10:12:45,965 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 10:12:45 WrapperNode [2023-11-30 10:12:45,965 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-30 10:12:45,967 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-30 10:12:45,967 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-30 10:12:45,967 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-30 10:12:45,972 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 10:12:45" (1/1) ... [2023-11-30 10:12:45,984 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 10:12:45" (1/1) ... [2023-11-30 10:12:46,008 INFO L138 Inliner]: procedures = 169, calls = 40, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 150 [2023-11-30 10:12:46,009 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-30 10:12:46,009 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-30 10:12:46,009 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-30 10:12:46,010 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-30 10:12:46,017 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 10:12:45" (1/1) ... [2023-11-30 10:12:46,018 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 10:12:45" (1/1) ... [2023-11-30 10:12:46,021 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 10:12:45" (1/1) ... [2023-11-30 10:12:46,021 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 10:12:45" (1/1) ... [2023-11-30 10:12:46,027 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 10:12:45" (1/1) ... [2023-11-30 10:12:46,043 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 10:12:45" (1/1) ... [2023-11-30 10:12:46,045 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 10:12:45" (1/1) ... [2023-11-30 10:12:46,046 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 10:12:45" (1/1) ... [2023-11-30 10:12:46,049 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-30 10:12:46,049 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-30 10:12:46,050 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-30 10:12:46,050 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-30 10:12:46,050 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 10:12:45" (1/1) ... [2023-11-30 10:12:46,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-30 10:12:46,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 10:12:46,086 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-30 10:12:46,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-30 10:12:46,113 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-30 10:12:46,113 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-11-30 10:12:46,114 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-11-30 10:12:46,114 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-11-30 10:12:46,114 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-11-30 10:12:46,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-30 10:12:46,114 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-30 10:12:46,115 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-30 10:12:46,115 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-30 10:12:46,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-30 10:12:46,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-30 10:12:46,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-30 10:12:46,116 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-30 10:12:46,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-30 10:12:46,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-30 10:12:46,119 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-30 10:12:46,235 INFO L241 CfgBuilder]: Building ICFG [2023-11-30 10:12:46,236 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-30 10:12:46,455 INFO L282 CfgBuilder]: Performing block encoding [2023-11-30 10:12:46,494 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-30 10:12:46,495 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-30 10:12:46,496 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 10:12:46 BoogieIcfgContainer [2023-11-30 10:12:46,496 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-30 10:12:46,498 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-30 10:12:46,498 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-30 10:12:46,503 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-30 10:12:46,503 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 10:12:45" (1/3) ... [2023-11-30 10:12:46,504 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60b02ee4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 10:12:46, skipping insertion in model container [2023-11-30 10:12:46,504 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 10:12:45" (2/3) ... [2023-11-30 10:12:46,504 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60b02ee4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 10:12:46, skipping insertion in model container [2023-11-30 10:12:46,504 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 10:12:46" (3/3) ... [2023-11-30 10:12:46,510 INFO L112 eAbstractionObserver]: Analyzing ICFG circular_buffer_bad.i [2023-11-30 10:12:46,526 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-30 10:12:46,526 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-11-30 10:12:46,526 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-30 10:12:46,597 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-30 10:12:46,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 158 places, 163 transitions, 340 flow [2023-11-30 10:12:46,680 INFO L124 PetriNetUnfolderBase]: 12/161 cut-off events. [2023-11-30 10:12:46,680 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-30 10:12:46,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170 conditions, 161 events. 12/161 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 341 event pairs, 0 based on Foata normal form. 0/145 useless extension candidates. Maximal degree in co-relation 106. Up to 2 conditions per place. [2023-11-30 10:12:46,686 INFO L82 GeneralOperation]: Start removeDead. Operand has 158 places, 163 transitions, 340 flow [2023-11-30 10:12:46,690 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 146 places, 151 transitions, 311 flow [2023-11-30 10:12:46,699 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-30 10:12:46,704 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;@1b7fccd6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-30 10:12:46,705 INFO L363 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-11-30 10:12:46,725 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-30 10:12:46,725 INFO L124 PetriNetUnfolderBase]: 2/80 cut-off events. [2023-11-30 10:12:46,725 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-30 10:12:46,725 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 10:12:46,726 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 10:12:46,726 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2023-11-30 10:12:46,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 10:12:46,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1669083155, now seen corresponding path program 1 times [2023-11-30 10:12:46,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 10:12:46,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152652896] [2023-11-30 10:12:46,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 10:12:46,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 10:12:46,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 10:12:47,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 10:12:47,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 10:12:47,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152652896] [2023-11-30 10:12:47,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152652896] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 10:12:47,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 10:12:47,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-30 10:12:47,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945548028] [2023-11-30 10:12:47,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 10:12:47,151 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-30 10:12:47,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 10:12:47,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-30 10:12:47,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-30 10:12:47,187 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 163 [2023-11-30 10:12:47,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 151 transitions, 311 flow. Second operand has 4 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:12:47,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 10:12:47,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 163 [2023-11-30 10:12:47,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 10:12:47,407 INFO L124 PetriNetUnfolderBase]: 91/465 cut-off events. [2023-11-30 10:12:47,407 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2023-11-30 10:12:47,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 687 conditions, 465 events. 91/465 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2581 event pairs, 41 based on Foata normal form. 73/491 useless extension candidates. Maximal degree in co-relation 617. Up to 105 conditions per place. [2023-11-30 10:12:47,418 INFO L140 encePairwiseOnDemand]: 150/163 looper letters, 33 selfloop transitions, 4 changer transitions 0/157 dead transitions. [2023-11-30 10:12:47,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 157 transitions, 406 flow [2023-11-30 10:12:47,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-30 10:12:47,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-30 10:12:47,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 733 transitions. [2023-11-30 10:12:47,439 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8993865030674847 [2023-11-30 10:12:47,440 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 733 transitions. [2023-11-30 10:12:47,440 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 733 transitions. [2023-11-30 10:12:47,444 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 10:12:47,446 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 733 transitions. [2023-11-30 10:12:47,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 146.6) internal successors, (733), 5 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:12:47,459 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 10:12:47,459 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 10:12:47,465 INFO L307 CegarLoopForPetriNet]: 146 programPoint places, -2 predicate places. [2023-11-30 10:12:47,465 INFO L500 AbstractCegarLoop]: Abstraction has has 144 places, 157 transitions, 406 flow [2023-11-30 10:12:47,466 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:12:47,466 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 10:12:47,466 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] [2023-11-30 10:12:47,467 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-30 10:12:47,467 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2023-11-30 10:12:47,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 10:12:47,468 INFO L85 PathProgramCache]: Analyzing trace with hash 605006424, now seen corresponding path program 1 times [2023-11-30 10:12:47,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 10:12:47,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583524729] [2023-11-30 10:12:47,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 10:12:47,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 10:12:47,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 10:12:47,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 10:12:47,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 10:12:47,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583524729] [2023-11-30 10:12:47,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583524729] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 10:12:47,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 10:12:47,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-30 10:12:47,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761946726] [2023-11-30 10:12:47,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 10:12:47,650 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-30 10:12:47,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 10:12:47,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-30 10:12:47,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-30 10:12:47,653 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 163 [2023-11-30 10:12:47,653 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 157 transitions, 406 flow. Second operand has 4 states, 4 states have (on average 136.25) internal successors, (545), 4 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:12:47,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 10:12:47,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 163 [2023-11-30 10:12:47,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 10:12:47,944 INFO L124 PetriNetUnfolderBase]: 312/1336 cut-off events. [2023-11-30 10:12:47,944 INFO L125 PetriNetUnfolderBase]: For 386/530 co-relation queries the response was YES. [2023-11-30 10:12:47,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2267 conditions, 1336 events. 312/1336 cut-off events. For 386/530 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 9852 event pairs, 115 based on Foata normal form. 8/1157 useless extension candidates. Maximal degree in co-relation 2006. Up to 268 conditions per place. [2023-11-30 10:12:47,954 INFO L140 encePairwiseOnDemand]: 156/163 looper letters, 58 selfloop transitions, 4 changer transitions 0/188 dead transitions. [2023-11-30 10:12:47,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 188 transitions, 647 flow [2023-11-30 10:12:47,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-30 10:12:47,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-30 10:12:47,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 712 transitions. [2023-11-30 10:12:47,957 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8736196319018404 [2023-11-30 10:12:47,957 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 712 transitions. [2023-11-30 10:12:47,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 712 transitions. [2023-11-30 10:12:47,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 10:12:47,958 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 712 transitions. [2023-11-30 10:12:47,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 142.4) internal successors, (712), 5 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:12:47,961 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 10:12:47,962 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 10:12:47,962 INFO L307 CegarLoopForPetriNet]: 146 programPoint places, 2 predicate places. [2023-11-30 10:12:47,962 INFO L500 AbstractCegarLoop]: Abstraction has has 148 places, 188 transitions, 647 flow [2023-11-30 10:12:47,963 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 136.25) internal successors, (545), 4 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:12:47,963 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 10:12:47,963 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 10:12:47,963 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-30 10:12:47,964 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2023-11-30 10:12:47,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 10:12:47,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1335413221, now seen corresponding path program 1 times [2023-11-30 10:12:47,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 10:12:47,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187972469] [2023-11-30 10:12:47,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 10:12:47,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 10:12:47,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 10:12:48,144 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 10:12:48,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 10:12:48,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187972469] [2023-11-30 10:12:48,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187972469] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 10:12:48,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550125555] [2023-11-30 10:12:48,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 10:12:48,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 10:12:48,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 10:12:48,152 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-30 10:12:48,158 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-30 10:12:48,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 10:12:48,267 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-30 10:12:48,273 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 10:12:48,356 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 10:12:48,358 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-30 10:12:48,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550125555] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 10:12:48,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-30 10:12:48,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-11-30 10:12:48,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553881404] [2023-11-30 10:12:48,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 10:12:48,364 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-30 10:12:48,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 10:12:48,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-30 10:12:48,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-30 10:12:48,367 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 163 [2023-11-30 10:12:48,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 188 transitions, 647 flow. Second operand has 6 states, 6 states have (on average 137.66666666666666) internal successors, (826), 6 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:12:48,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 10:12:48,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 163 [2023-11-30 10:12:48,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 10:12:48,627 INFO L124 PetriNetUnfolderBase]: 289/1319 cut-off events. [2023-11-30 10:12:48,628 INFO L125 PetriNetUnfolderBase]: For 793/1132 co-relation queries the response was YES. [2023-11-30 10:12:48,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2655 conditions, 1319 events. 289/1319 cut-off events. For 793/1132 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 9661 event pairs, 75 based on Foata normal form. 34/1174 useless extension candidates. Maximal degree in co-relation 2369. Up to 266 conditions per place. [2023-11-30 10:12:48,638 INFO L140 encePairwiseOnDemand]: 158/163 looper letters, 63 selfloop transitions, 6 changer transitions 0/197 dead transitions. [2023-11-30 10:12:48,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 197 transitions, 847 flow [2023-11-30 10:12:48,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-30 10:12:48,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-30 10:12:48,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 988 transitions. [2023-11-30 10:12:48,641 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8659070990359334 [2023-11-30 10:12:48,641 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 988 transitions. [2023-11-30 10:12:48,641 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 988 transitions. [2023-11-30 10:12:48,642 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 10:12:48,642 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 988 transitions. [2023-11-30 10:12:48,644 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 141.14285714285714) internal successors, (988), 7 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:12:48,646 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 10:12:48,647 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 10:12:48,648 INFO L307 CegarLoopForPetriNet]: 146 programPoint places, 7 predicate places. [2023-11-30 10:12:48,648 INFO L500 AbstractCegarLoop]: Abstraction has has 153 places, 197 transitions, 847 flow [2023-11-30 10:12:48,649 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 137.66666666666666) internal successors, (826), 6 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:12:48,649 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 10:12:48,649 INFO L232 CegarLoopForPetriNet]: trace histogram [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] [2023-11-30 10:12:48,659 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 10:12:48,855 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 10:12:48,856 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2023-11-30 10:12:48,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 10:12:48,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1551863557, now seen corresponding path program 1 times [2023-11-30 10:12:48,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 10:12:48,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555309315] [2023-11-30 10:12:48,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 10:12:48,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 10:12:48,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 10:12:48,938 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-30 10:12:48,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 10:12:48,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555309315] [2023-11-30 10:12:48,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555309315] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 10:12:48,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 10:12:48,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-30 10:12:48,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138633325] [2023-11-30 10:12:48,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 10:12:48,940 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-30 10:12:48,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 10:12:48,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-30 10:12:48,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-30 10:12:48,943 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 163 [2023-11-30 10:12:48,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 197 transitions, 847 flow. Second operand has 4 states, 4 states have (on average 139.25) internal successors, (557), 4 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:12:48,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 10:12:48,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 163 [2023-11-30 10:12:48,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 10:12:49,137 INFO L124 PetriNetUnfolderBase]: 277/1212 cut-off events. [2023-11-30 10:12:49,138 INFO L125 PetriNetUnfolderBase]: For 1325/1817 co-relation queries the response was YES. [2023-11-30 10:12:49,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2900 conditions, 1212 events. 277/1212 cut-off events. For 1325/1817 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 8827 event pairs, 68 based on Foata normal form. 52/1105 useless extension candidates. Maximal degree in co-relation 2597. Up to 250 conditions per place. [2023-11-30 10:12:49,149 INFO L140 encePairwiseOnDemand]: 157/163 looper letters, 70 selfloop transitions, 8 changer transitions 0/206 dead transitions. [2023-11-30 10:12:49,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 206 transitions, 1083 flow [2023-11-30 10:12:49,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-30 10:12:49,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-30 10:12:49,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 703 transitions. [2023-11-30 10:12:49,152 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8625766871165644 [2023-11-30 10:12:49,152 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 703 transitions. [2023-11-30 10:12:49,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 703 transitions. [2023-11-30 10:12:49,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 10:12:49,153 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 703 transitions. [2023-11-30 10:12:49,155 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 140.6) internal successors, (703), 5 states have internal predecessors, (703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:12:49,157 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 10:12:49,158 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 10:12:49,159 INFO L307 CegarLoopForPetriNet]: 146 programPoint places, 10 predicate places. [2023-11-30 10:12:49,159 INFO L500 AbstractCegarLoop]: Abstraction has has 156 places, 206 transitions, 1083 flow [2023-11-30 10:12:49,161 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 139.25) internal successors, (557), 4 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:12:49,161 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 10:12:49,161 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 10:12:49,163 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-30 10:12:49,163 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2023-11-30 10:12:49,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 10:12:49,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1611625320, now seen corresponding path program 1 times [2023-11-30 10:12:49,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 10:12:49,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52912775] [2023-11-30 10:12:49,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 10:12:49,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 10:12:49,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 10:12:49,306 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 10:12:49,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 10:12:49,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52912775] [2023-11-30 10:12:49,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52912775] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 10:12:49,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [665158708] [2023-11-30 10:12:49,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 10:12:49,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 10:12:49,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 10:12:49,313 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-30 10:12:49,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-30 10:12:49,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 10:12:49,416 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-30 10:12:49,418 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 10:12:49,479 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 10:12:49,480 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-30 10:12:49,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [665158708] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 10:12:49,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-30 10:12:49,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-11-30 10:12:49,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271772084] [2023-11-30 10:12:49,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 10:12:49,481 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-30 10:12:49,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 10:12:49,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-30 10:12:49,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-30 10:12:49,484 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 163 [2023-11-30 10:12:49,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 206 transitions, 1083 flow. Second operand has 6 states, 6 states have (on average 136.83333333333334) internal successors, (821), 6 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:12:49,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 10:12:49,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 163 [2023-11-30 10:12:49,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 10:12:49,717 INFO L124 PetriNetUnfolderBase]: 282/1110 cut-off events. [2023-11-30 10:12:49,717 INFO L125 PetriNetUnfolderBase]: For 2178/3034 co-relation queries the response was YES. [2023-11-30 10:12:49,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3117 conditions, 1110 events. 282/1110 cut-off events. For 2178/3034 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 7849 event pairs, 25 based on Foata normal form. 71/1038 useless extension candidates. Maximal degree in co-relation 2770. Up to 234 conditions per place. [2023-11-30 10:12:49,729 INFO L140 encePairwiseOnDemand]: 158/163 looper letters, 85 selfloop transitions, 6 changer transitions 0/215 dead transitions. [2023-11-30 10:12:49,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 215 transitions, 1367 flow [2023-11-30 10:12:49,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-30 10:12:49,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-30 10:12:49,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 983 transitions. [2023-11-30 10:12:49,732 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8615249780893953 [2023-11-30 10:12:49,732 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 983 transitions. [2023-11-30 10:12:49,732 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 983 transitions. [2023-11-30 10:12:49,733 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 10:12:49,733 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 983 transitions. [2023-11-30 10:12:49,735 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 140.42857142857142) internal successors, (983), 7 states have internal predecessors, (983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:12:49,737 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 10:12:49,738 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 10:12:49,738 INFO L307 CegarLoopForPetriNet]: 146 programPoint places, 15 predicate places. [2023-11-30 10:12:49,738 INFO L500 AbstractCegarLoop]: Abstraction has has 161 places, 215 transitions, 1367 flow [2023-11-30 10:12:49,739 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 136.83333333333334) internal successors, (821), 6 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:12:49,739 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 10:12:49,739 INFO L232 CegarLoopForPetriNet]: trace histogram [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] [2023-11-30 10:12:49,748 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-30 10:12:49,945 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 10:12:49,946 INFO L425 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2023-11-30 10:12:49,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 10:12:49,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1579222135, now seen corresponding path program 1 times [2023-11-30 10:12:49,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 10:12:49,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933076073] [2023-11-30 10:12:49,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 10:12:49,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 10:12:49,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 10:12:49,999 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-30 10:12:50,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 10:12:50,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933076073] [2023-11-30 10:12:50,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933076073] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 10:12:50,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 10:12:50,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-30 10:12:50,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909556296] [2023-11-30 10:12:50,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 10:12:50,001 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-30 10:12:50,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 10:12:50,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-30 10:12:50,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-30 10:12:50,002 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 163 [2023-11-30 10:12:50,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 215 transitions, 1367 flow. Second operand has 4 states, 4 states have (on average 138.5) internal successors, (554), 4 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:12:50,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 10:12:50,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 163 [2023-11-30 10:12:50,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 10:12:50,172 INFO L124 PetriNetUnfolderBase]: 275/1097 cut-off events. [2023-11-30 10:12:50,172 INFO L125 PetriNetUnfolderBase]: For 2638/3545 co-relation queries the response was YES. [2023-11-30 10:12:50,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3431 conditions, 1097 events. 275/1097 cut-off events. For 2638/3545 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 7719 event pairs, 25 based on Foata normal form. 69/1039 useless extension candidates. Maximal degree in co-relation 3044. Up to 225 conditions per place. [2023-11-30 10:12:50,179 INFO L140 encePairwiseOnDemand]: 157/163 looper letters, 0 selfloop transitions, 0 changer transitions 224/224 dead transitions. [2023-11-30 10:12:50,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 224 transitions, 1687 flow [2023-11-30 10:12:50,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-30 10:12:50,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-30 10:12:50,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 699 transitions. [2023-11-30 10:12:50,182 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8576687116564418 [2023-11-30 10:12:50,182 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 699 transitions. [2023-11-30 10:12:50,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 699 transitions. [2023-11-30 10:12:50,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 10:12:50,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 699 transitions. [2023-11-30 10:12:50,184 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 139.8) internal successors, (699), 5 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:12:50,186 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 10:12:50,186 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 10:12:50,189 INFO L307 CegarLoopForPetriNet]: 146 programPoint places, 18 predicate places. [2023-11-30 10:12:50,189 INFO L500 AbstractCegarLoop]: Abstraction has has 164 places, 224 transitions, 1687 flow [2023-11-30 10:12:50,189 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 138.5) internal successors, (554), 4 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:12:50,198 INFO L143 wickiGriesTestDumper]: Dumping Owicki-Gries test to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/circular_buffer_bad.i_BEv2_AllErrorsAtOnce [2023-11-30 10:12:50,235 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2023-11-30 10:12:50,235 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 10 remaining) [2023-11-30 10:12:50,236 INFO L810 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2023-11-30 10:12:50,237 INFO L810 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2023-11-30 10:12:50,237 INFO L810 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2023-11-30 10:12:50,237 INFO L810 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2023-11-30 10:12:50,237 INFO L810 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2023-11-30 10:12:50,237 INFO L810 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2023-11-30 10:12:50,238 INFO L810 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2023-11-30 10:12:50,238 INFO L810 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 10 remaining) [2023-11-30 10:12:50,238 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-30 10:12:50,238 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-11-30 10:12:50,242 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-30 10:12:50,242 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-11-30 10:12:50,255 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 10:12:50 BasicIcfg [2023-11-30 10:12:50,255 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-30 10:12:50,255 INFO L158 Benchmark]: Toolchain (without parser) took 4757.92ms. Allocated memory is still 599.8MB. Free memory was 550.0MB in the beginning and 371.6MB in the end (delta: 178.4MB). Peak memory consumption was 178.7MB. Max. memory is 16.0GB. [2023-11-30 10:12:50,255 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 356.5MB. Free memory is still 309.5MB. There was no memory consumed. Max. memory is 16.0GB. [2023-11-30 10:12:50,256 INFO L158 Benchmark]: CACSL2BoogieTranslator took 465.72ms. Allocated memory is still 599.8MB. Free memory was 549.6MB in the beginning and 529.5MB in the end (delta: 20.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-11-30 10:12:50,256 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.30ms. Allocated memory is still 599.8MB. Free memory was 529.5MB in the beginning and 526.9MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-11-30 10:12:50,256 INFO L158 Benchmark]: Boogie Preprocessor took 39.44ms. Allocated memory is still 599.8MB. Free memory was 526.9MB in the beginning and 525.2MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.0GB. [2023-11-30 10:12:50,256 INFO L158 Benchmark]: RCFGBuilder took 446.83ms. Allocated memory is still 599.8MB. Free memory was 525.1MB in the beginning and 567.4MB in the end (delta: -42.3MB). Peak memory consumption was 27.0MB. Max. memory is 16.0GB. [2023-11-30 10:12:50,258 INFO L158 Benchmark]: TraceAbstraction took 3757.08ms. Allocated memory is still 599.8MB. Free memory was 566.3MB in the beginning and 371.6MB in the end (delta: 194.7MB). Peak memory consumption was 193.7MB. Max. memory is 16.0GB. [2023-11-30 10:12:50,259 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 356.5MB. Free memory is still 309.5MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 465.72ms. Allocated memory is still 599.8MB. Free memory was 549.6MB in the beginning and 529.5MB in the end (delta: 20.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 42.30ms. Allocated memory is still 599.8MB. Free memory was 529.5MB in the beginning and 526.9MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 39.44ms. Allocated memory is still 599.8MB. Free memory was 526.9MB in the beginning and 525.2MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 446.83ms. Allocated memory is still 599.8MB. Free memory was 525.1MB in the beginning and 567.4MB in the end (delta: -42.3MB). Peak memory consumption was 27.0MB. Max. memory is 16.0GB. * TraceAbstraction took 3757.08ms. Allocated memory is still 599.8MB. Free memory was 566.3MB in the beginning and 371.6MB in the end (delta: 194.7MB). Peak memory consumption was 193.7MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 724]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 724]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 740]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 740]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 239 locations, 10 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: 3.6s, OverallIterations: 6, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 129 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 129 mSDsluCounter, 60 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 32 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 413 IncrementalHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 28 mSDtfsCounter, 413 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 170 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1687occurred in iteration=6, InterpolantAutomatonStates: 34, 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: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 532 NumberOfCodeBlocks, 532 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 524 ConstructedInterpolants, 0 QuantifiedInterpolants, 740 SizeOfPredicates, 6 NumberOfNonLiveVariables, 410 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 8 InterpolantComputations, 6 PerfectInterpolantSequences, 34/50 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-30 10:12:50,278 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...