/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/goblint-regression/09-regions_19-nested_nr.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-175f719-m [2023-11-30 07:34:00,729 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-30 07:34:00,784 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 07:34:00,803 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-30 07:34:00,803 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-30 07:34:00,804 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-30 07:34:00,804 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-30 07:34:00,804 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-30 07:34:00,805 INFO L153 SettingsManager]: * Use SBE=true [2023-11-30 07:34:00,805 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-30 07:34:00,805 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-30 07:34:00,806 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-30 07:34:00,806 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-30 07:34:00,806 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-30 07:34:00,807 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-30 07:34:00,807 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-30 07:34:00,807 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-30 07:34:00,807 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-30 07:34:00,808 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-30 07:34:00,808 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-30 07:34:00,808 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-30 07:34:00,809 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-30 07:34:00,809 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-30 07:34:00,810 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-30 07:34:00,810 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-30 07:34:00,810 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-30 07:34:00,811 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-30 07:34:00,811 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-30 07:34:00,811 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-30 07:34:00,811 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-30 07:34:00,812 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-30 07:34:00,812 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-30 07:34:00,812 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-30 07:34:00,812 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-11-30 07:34:01,040 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-30 07:34:01,063 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-30 07:34:01,065 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-30 07:34:01,067 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-30 07:34:01,067 INFO L274 PluginConnector]: CDTParser initialized [2023-11-30 07:34:01,068 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/09-regions_19-nested_nr.i [2023-11-30 07:34:02,200 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-30 07:34:02,464 INFO L384 CDTParser]: Found 1 translation units. [2023-11-30 07:34:02,465 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/09-regions_19-nested_nr.i [2023-11-30 07:34:02,481 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59145b102/bf8fbd3c978445db9885b7c4b48daa59/FLAG7e7fc029a [2023-11-30 07:34:02,495 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59145b102/bf8fbd3c978445db9885b7c4b48daa59 [2023-11-30 07:34:02,497 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-30 07:34:02,498 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-30 07:34:02,501 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-30 07:34:02,501 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-30 07:34:02,505 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-30 07:34:02,506 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 07:34:02" (1/1) ... [2023-11-30 07:34:02,506 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6524ed64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 07:34:02, skipping insertion in model container [2023-11-30 07:34:02,507 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 07:34:02" (1/1) ... [2023-11-30 07:34:02,569 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-30 07:34:03,037 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-30 07:34:03,050 INFO L202 MainTranslator]: Completed pre-run [2023-11-30 07:34:03,099 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-30 07:34:03,171 INFO L206 MainTranslator]: Completed translation [2023-11-30 07:34:03,172 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 07:34:03 WrapperNode [2023-11-30 07:34:03,172 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-30 07:34:03,173 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-30 07:34:03,173 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-30 07:34:03,173 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-30 07:34:03,179 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 07:34:03" (1/1) ... [2023-11-30 07:34:03,208 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 07:34:03" (1/1) ... [2023-11-30 07:34:03,242 INFO L138 Inliner]: procedures = 371, calls = 31, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 135 [2023-11-30 07:34:03,242 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-30 07:34:03,243 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-30 07:34:03,243 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-30 07:34:03,243 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-30 07:34:03,251 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 07:34:03" (1/1) ... [2023-11-30 07:34:03,251 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 07:34:03" (1/1) ... [2023-11-30 07:34:03,264 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 07:34:03" (1/1) ... [2023-11-30 07:34:03,265 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 07:34:03" (1/1) ... [2023-11-30 07:34:03,285 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 07:34:03" (1/1) ... [2023-11-30 07:34:03,288 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 07:34:03" (1/1) ... [2023-11-30 07:34:03,289 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 07:34:03" (1/1) ... [2023-11-30 07:34:03,290 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 07:34:03" (1/1) ... [2023-11-30 07:34:03,293 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-30 07:34:03,294 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-30 07:34:03,294 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-30 07:34:03,294 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-30 07:34:03,295 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 07:34:03" (1/1) ... [2023-11-30 07:34:03,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-30 07:34:03,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 07:34:03,326 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 07:34:03,348 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 07:34:03,358 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-30 07:34:03,358 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-30 07:34:03,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-30 07:34:03,359 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-30 07:34:03,359 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-30 07:34:03,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-30 07:34:03,359 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-30 07:34:03,360 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-30 07:34:03,360 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-30 07:34:03,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-30 07:34:03,360 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-30 07:34:03,360 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-30 07:34:03,361 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-30 07:34:03,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-30 07:34:03,362 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 07:34:03,517 INFO L241 CfgBuilder]: Building ICFG [2023-11-30 07:34:03,518 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-30 07:34:03,765 INFO L282 CfgBuilder]: Performing block encoding [2023-11-30 07:34:03,785 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-30 07:34:03,785 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-30 07:34:03,786 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 07:34:03 BoogieIcfgContainer [2023-11-30 07:34:03,786 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-30 07:34:03,787 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-30 07:34:03,788 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-30 07:34:03,790 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-30 07:34:03,790 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 07:34:02" (1/3) ... [2023-11-30 07:34:03,791 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@115e3d1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 07:34:03, skipping insertion in model container [2023-11-30 07:34:03,791 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 07:34:03" (2/3) ... [2023-11-30 07:34:03,791 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@115e3d1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 07:34:03, skipping insertion in model container [2023-11-30 07:34:03,791 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 07:34:03" (3/3) ... [2023-11-30 07:34:03,792 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_19-nested_nr.i [2023-11-30 07:34:03,807 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-30 07:34:03,807 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-11-30 07:34:03,807 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-30 07:34:03,864 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-30 07:34:03,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 158 places, 160 transitions, 324 flow [2023-11-30 07:34:03,941 INFO L124 PetriNetUnfolderBase]: 6/159 cut-off events. [2023-11-30 07:34:03,941 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-30 07:34:03,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163 conditions, 159 events. 6/159 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 209 event pairs, 0 based on Foata normal form. 0/149 useless extension candidates. Maximal degree in co-relation 92. Up to 2 conditions per place. [2023-11-30 07:34:03,945 INFO L82 GeneralOperation]: Start removeDead. Operand has 158 places, 160 transitions, 324 flow [2023-11-30 07:34:03,948 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 86 transitions, 172 flow [2023-11-30 07:34:03,956 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-30 07:34:03,961 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;@6b8b69a9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-30 07:34:03,961 INFO L363 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-30 07:34:03,965 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-30 07:34:03,965 INFO L124 PetriNetUnfolderBase]: 1/17 cut-off events. [2023-11-30 07:34:03,965 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-30 07:34:03,966 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 07:34:03,966 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 07:34:03,966 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2023-11-30 07:34:03,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 07:34:03,971 INFO L85 PathProgramCache]: Analyzing trace with hash 826105083, now seen corresponding path program 1 times [2023-11-30 07:34:03,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 07:34:03,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313782711] [2023-11-30 07:34:03,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 07:34:03,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 07:34:04,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 07:34:04,267 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 07:34:04,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 07:34:04,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313782711] [2023-11-30 07:34:04,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313782711] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 07:34:04,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 07:34:04,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-30 07:34:04,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166537250] [2023-11-30 07:34:04,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 07:34:04,276 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-30 07:34:04,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 07:34:04,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-30 07:34:04,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-30 07:34:04,301 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 160 [2023-11-30 07:34:04,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 86 transitions, 172 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 07:34:04,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 07:34:04,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 160 [2023-11-30 07:34:04,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 07:34:04,366 INFO L124 PetriNetUnfolderBase]: 2/91 cut-off events. [2023-11-30 07:34:04,366 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-30 07:34:04,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113 conditions, 91 events. 2/91 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 24 event pairs, 0 based on Foata normal form. 1/86 useless extension candidates. Maximal degree in co-relation 64. Up to 14 conditions per place. [2023-11-30 07:34:04,367 INFO L140 encePairwiseOnDemand]: 151/160 looper letters, 16 selfloop transitions, 4 changer transitions 1/91 dead transitions. [2023-11-30 07:34:04,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 91 transitions, 222 flow [2023-11-30 07:34:04,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-30 07:34:04,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-30 07:34:04,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 711 transitions. [2023-11-30 07:34:04,389 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.88875 [2023-11-30 07:34:04,390 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 711 transitions. [2023-11-30 07:34:04,390 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 711 transitions. [2023-11-30 07:34:04,393 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 07:34:04,394 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 711 transitions. [2023-11-30 07:34:04,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 142.2) internal successors, (711), 5 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 07:34:04,410 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 07:34:04,411 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 07:34:04,415 INFO L307 CegarLoopForPetriNet]: 83 programPoint places, 4 predicate places. [2023-11-30 07:34:04,416 INFO L500 AbstractCegarLoop]: Abstraction has has 87 places, 91 transitions, 222 flow [2023-11-30 07:34:04,416 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 07:34:04,416 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 07:34:04,416 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 07:34:04,417 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-30 07:34:04,417 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2023-11-30 07:34:04,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 07:34:04,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1743274832, now seen corresponding path program 1 times [2023-11-30 07:34:04,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 07:34:04,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443710742] [2023-11-30 07:34:04,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 07:34:04,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 07:34:04,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 07:34:04,607 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 07:34:04,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 07:34:04,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443710742] [2023-11-30 07:34:04,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443710742] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 07:34:04,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123484223] [2023-11-30 07:34:04,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 07:34:04,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 07:34:04,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 07:34:04,611 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 07:34:04,632 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 07:34:04,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 07:34:04,710 INFO L262 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-30 07:34:04,714 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 07:34:04,784 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 07:34:04,784 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-30 07:34:04,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123484223] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 07:34:04,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-30 07:34:04,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-11-30 07:34:04,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505266330] [2023-11-30 07:34:04,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 07:34:04,787 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-30 07:34:04,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 07:34:04,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-30 07:34:04,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-30 07:34:04,790 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 160 [2023-11-30 07:34:04,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 91 transitions, 222 flow. Second operand has 6 states, 6 states have (on average 139.16666666666666) internal successors, (835), 6 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 07:34:04,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 07:34:04,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 160 [2023-11-30 07:34:04,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 07:34:04,872 INFO L124 PetriNetUnfolderBase]: 2/90 cut-off events. [2023-11-30 07:34:04,873 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-30 07:34:04,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131 conditions, 90 events. 2/90 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 19 event pairs, 0 based on Foata normal form. 0/85 useless extension candidates. Maximal degree in co-relation 64. Up to 13 conditions per place. [2023-11-30 07:34:04,875 INFO L140 encePairwiseOnDemand]: 154/160 looper letters, 12 selfloop transitions, 7 changer transitions 1/90 dead transitions. [2023-11-30 07:34:04,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 90 transitions, 256 flow [2023-11-30 07:34:04,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-30 07:34:04,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-30 07:34:04,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 979 transitions. [2023-11-30 07:34:04,881 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8741071428571429 [2023-11-30 07:34:04,881 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 979 transitions. [2023-11-30 07:34:04,881 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 979 transitions. [2023-11-30 07:34:04,882 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 07:34:04,882 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 979 transitions. [2023-11-30 07:34:04,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 139.85714285714286) internal successors, (979), 7 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 07:34:04,886 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 160.0) internal successors, (1280), 8 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 07:34:04,887 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 160.0) internal successors, (1280), 8 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 07:34:04,889 INFO L307 CegarLoopForPetriNet]: 83 programPoint places, 9 predicate places. [2023-11-30 07:34:04,889 INFO L500 AbstractCegarLoop]: Abstraction has has 92 places, 90 transitions, 256 flow [2023-11-30 07:34:04,890 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 139.16666666666666) internal successors, (835), 6 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 07:34:04,890 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 07:34:04,891 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 07:34:04,899 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-30 07:34:05,099 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 07:34:05,100 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2023-11-30 07:34:05,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 07:34:05,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1793054686, now seen corresponding path program 1 times [2023-11-30 07:34:05,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 07:34:05,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025502308] [2023-11-30 07:34:05,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 07:34:05,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 07:34:05,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 07:34:05,172 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-30 07:34:05,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 07:34:05,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025502308] [2023-11-30 07:34:05,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025502308] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 07:34:05,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 07:34:05,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-30 07:34:05,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204441111] [2023-11-30 07:34:05,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 07:34:05,179 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-30 07:34:05,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 07:34:05,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-30 07:34:05,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-30 07:34:05,181 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 160 [2023-11-30 07:34:05,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 90 transitions, 256 flow. Second operand has 4 states, 4 states have (on average 140.5) internal successors, (562), 4 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 07:34:05,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 07:34:05,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 160 [2023-11-30 07:34:05,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 07:34:05,234 INFO L124 PetriNetUnfolderBase]: 2/89 cut-off events. [2023-11-30 07:34:05,234 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-30 07:34:05,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147 conditions, 89 events. 2/89 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 16 event pairs, 0 based on Foata normal form. 0/85 useless extension candidates. Maximal degree in co-relation 64. Up to 12 conditions per place. [2023-11-30 07:34:05,235 INFO L140 encePairwiseOnDemand]: 154/160 looper letters, 10 selfloop transitions, 8 changer transitions 1/89 dead transitions. [2023-11-30 07:34:05,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 89 transitions, 286 flow [2023-11-30 07:34:05,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-30 07:34:05,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-30 07:34:05,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 698 transitions. [2023-11-30 07:34:05,238 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8725 [2023-11-30 07:34:05,238 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 698 transitions. [2023-11-30 07:34:05,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 698 transitions. [2023-11-30 07:34:05,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 07:34:05,238 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 698 transitions. [2023-11-30 07:34:05,240 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 139.6) internal successors, (698), 5 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 07:34:05,242 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 07:34:05,242 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 07:34:05,244 INFO L307 CegarLoopForPetriNet]: 83 programPoint places, 12 predicate places. [2023-11-30 07:34:05,244 INFO L500 AbstractCegarLoop]: Abstraction has has 95 places, 89 transitions, 286 flow [2023-11-30 07:34:05,244 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 140.5) internal successors, (562), 4 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 07:34:05,244 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 07:34:05,245 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] [2023-11-30 07:34:05,245 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-30 07:34:05,245 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2023-11-30 07:34:05,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 07:34:05,246 INFO L85 PathProgramCache]: Analyzing trace with hash -418697798, now seen corresponding path program 1 times [2023-11-30 07:34:05,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 07:34:05,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103664693] [2023-11-30 07:34:05,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 07:34:05,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 07:34:05,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 07:34:05,436 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 07:34:05,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 07:34:05,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103664693] [2023-11-30 07:34:05,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103664693] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 07:34:05,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134662550] [2023-11-30 07:34:05,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 07:34:05,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 07:34:05,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 07:34:05,440 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 07:34:05,466 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 07:34:05,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 07:34:05,581 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-30 07:34:05,586 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 07:34:05,629 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 07:34:05,630 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-30 07:34:05,678 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 07:34:05,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2134662550] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-30 07:34:05,679 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-30 07:34:05,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-30 07:34:05,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002743710] [2023-11-30 07:34:05,680 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-30 07:34:05,682 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-30 07:34:05,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 07:34:05,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-30 07:34:05,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-30 07:34:05,687 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 160 [2023-11-30 07:34:05,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 89 transitions, 286 flow. Second operand has 10 states, 10 states have (on average 139.7) internal successors, (1397), 10 states have internal predecessors, (1397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 07:34:05,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 07:34:05,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 160 [2023-11-30 07:34:05,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 07:34:05,790 INFO L124 PetriNetUnfolderBase]: 2/97 cut-off events. [2023-11-30 07:34:05,790 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-30 07:34:05,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 206 conditions, 97 events. 2/97 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 5 event pairs, 0 based on Foata normal form. 0/93 useless extension candidates. Maximal degree in co-relation 64. Up to 20 conditions per place. [2023-11-30 07:34:05,791 INFO L140 encePairwiseOnDemand]: 154/160 looper letters, 17 selfloop transitions, 9 changer transitions 1/97 dead transitions. [2023-11-30 07:34:05,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 97 transitions, 402 flow [2023-11-30 07:34:05,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-30 07:34:05,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-30 07:34:05,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1261 transitions. [2023-11-30 07:34:05,795 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8756944444444444 [2023-11-30 07:34:05,795 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1261 transitions. [2023-11-30 07:34:05,795 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1261 transitions. [2023-11-30 07:34:05,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 07:34:05,796 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1261 transitions. [2023-11-30 07:34:05,799 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 140.11111111111111) internal successors, (1261), 9 states have internal predecessors, (1261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 07:34:05,802 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 160.0) internal successors, (1600), 10 states have internal predecessors, (1600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 07:34:05,803 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 160.0) internal successors, (1600), 10 states have internal predecessors, (1600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 07:34:05,804 INFO L307 CegarLoopForPetriNet]: 83 programPoint places, 20 predicate places. [2023-11-30 07:34:05,804 INFO L500 AbstractCegarLoop]: Abstraction has has 103 places, 97 transitions, 402 flow [2023-11-30 07:34:05,805 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 139.7) internal successors, (1397), 10 states have internal predecessors, (1397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 07:34:05,805 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 07:34:05,806 INFO L232 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:34:05,816 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 07:34:06,011 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,SelfDestructingSolverStorable3 [2023-11-30 07:34:06,012 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2023-11-30 07:34:06,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 07:34:06,012 INFO L85 PathProgramCache]: Analyzing trace with hash 311081818, now seen corresponding path program 2 times [2023-11-30 07:34:06,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 07:34:06,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692779736] [2023-11-30 07:34:06,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 07:34:06,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 07:34:06,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 07:34:06,192 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-30 07:34:06,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 07:34:06,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692779736] [2023-11-30 07:34:06,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692779736] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 07:34:06,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 07:34:06,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-30 07:34:06,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145036723] [2023-11-30 07:34:06,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 07:34:06,194 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-30 07:34:06,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 07:34:06,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-30 07:34:06,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-30 07:34:06,196 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 160 [2023-11-30 07:34:06,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 97 transitions, 402 flow. Second operand has 4 states, 4 states have (on average 137.75) internal successors, (551), 4 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 07:34:06,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 07:34:06,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 160 [2023-11-30 07:34:06,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 07:34:06,263 INFO L124 PetriNetUnfolderBase]: 2/145 cut-off events. [2023-11-30 07:34:06,263 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-11-30 07:34:06,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 275 conditions, 145 events. 2/145 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 5 event pairs, 0 based on Foata normal form. 0/141 useless extension candidates. Maximal degree in co-relation 138. Up to 20 conditions per place. [2023-11-30 07:34:06,266 INFO L140 encePairwiseOnDemand]: 154/160 looper letters, 16 selfloop transitions, 4 changer transitions 1/105 dead transitions. [2023-11-30 07:34:06,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 105 transitions, 458 flow [2023-11-30 07:34:06,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-30 07:34:06,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-30 07:34:06,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 702 transitions. [2023-11-30 07:34:06,273 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8775 [2023-11-30 07:34:06,273 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 702 transitions. [2023-11-30 07:34:06,273 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 702 transitions. [2023-11-30 07:34:06,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 07:34:06,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 702 transitions. [2023-11-30 07:34:06,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 140.4) internal successors, (702), 5 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 07:34:06,277 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 07:34:06,277 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 07:34:06,278 INFO L307 CegarLoopForPetriNet]: 83 programPoint places, 24 predicate places. [2023-11-30 07:34:06,278 INFO L500 AbstractCegarLoop]: Abstraction has has 107 places, 105 transitions, 458 flow [2023-11-30 07:34:06,278 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 137.75) internal successors, (551), 4 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 07:34:06,278 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 07:34:06,278 INFO L232 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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, 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] [2023-11-30 07:34:06,279 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-30 07:34:06,279 INFO L425 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2023-11-30 07:34:06,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 07:34:06,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1340776148, now seen corresponding path program 1 times [2023-11-30 07:34:06,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 07:34:06,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800663167] [2023-11-30 07:34:06,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 07:34:06,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 07:34:06,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 07:34:06,581 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-30 07:34:06,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 07:34:06,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800663167] [2023-11-30 07:34:06,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800663167] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 07:34:06,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969765753] [2023-11-30 07:34:06,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 07:34:06,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 07:34:06,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 07:34:06,584 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 07:34:06,609 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 07:34:06,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 07:34:06,766 INFO L262 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-30 07:34:06,772 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 07:34:06,833 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-30 07:34:06,833 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-30 07:34:06,937 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-30 07:34:06,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1969765753] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-30 07:34:06,938 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-30 07:34:06,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2023-11-30 07:34:06,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134788842] [2023-11-30 07:34:06,939 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-30 07:34:06,939 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-30 07:34:06,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 07:34:06,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-30 07:34:06,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-11-30 07:34:06,970 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 160 [2023-11-30 07:34:06,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 105 transitions, 458 flow. Second operand has 18 states, 18 states have (on average 140.05555555555554) internal successors, (2521), 18 states have internal predecessors, (2521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 07:34:06,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 07:34:06,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 160 [2023-11-30 07:34:06,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 07:34:07,150 INFO L124 PetriNetUnfolderBase]: 2/173 cut-off events. [2023-11-30 07:34:07,150 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2023-11-30 07:34:07,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 470 conditions, 173 events. 2/173 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 5 event pairs, 0 based on Foata normal form. 0/169 useless extension candidates. Maximal degree in co-relation 331. Up to 48 conditions per place. [2023-11-30 07:34:07,151 INFO L140 encePairwiseOnDemand]: 154/160 looper letters, 33 selfloop transitions, 21 changer transitions 1/133 dead transitions. [2023-11-30 07:34:07,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 133 transitions, 846 flow [2023-11-30 07:34:07,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-30 07:34:07,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-30 07:34:07,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2935 transitions. [2023-11-30 07:34:07,157 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8735119047619048 [2023-11-30 07:34:07,158 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2935 transitions. [2023-11-30 07:34:07,158 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2935 transitions. [2023-11-30 07:34:07,159 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 07:34:07,159 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2935 transitions. [2023-11-30 07:34:07,165 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 139.76190476190476) internal successors, (2935), 21 states have internal predecessors, (2935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 07:34:07,170 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 160.0) internal successors, (3520), 22 states have internal predecessors, (3520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 07:34:07,171 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 160.0) internal successors, (3520), 22 states have internal predecessors, (3520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 07:34:07,172 INFO L307 CegarLoopForPetriNet]: 83 programPoint places, 44 predicate places. [2023-11-30 07:34:07,172 INFO L500 AbstractCegarLoop]: Abstraction has has 127 places, 133 transitions, 846 flow [2023-11-30 07:34:07,173 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 140.05555555555554) internal successors, (2521), 18 states have internal predecessors, (2521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 07:34:07,173 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 07:34:07,173 INFO L232 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 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, 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] [2023-11-30 07:34:07,183 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 07:34:07,379 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 07:34:07,380 INFO L425 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2023-11-30 07:34:07,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 07:34:07,380 INFO L85 PathProgramCache]: Analyzing trace with hash 647623788, now seen corresponding path program 2 times [2023-11-30 07:34:07,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 07:34:07,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427838692] [2023-11-30 07:34:07,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 07:34:07,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 07:34:07,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 07:34:07,837 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-30 07:34:07,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 07:34:07,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427838692] [2023-11-30 07:34:07,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427838692] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 07:34:07,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1245940915] [2023-11-30 07:34:07,838 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-30 07:34:07,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 07:34:07,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 07:34:07,839 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 07:34:07,856 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 07:34:08,098 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-30 07:34:08,099 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-30 07:34:08,101 INFO L262 TraceCheckSpWp]: Trace formula consists of 520 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-30 07:34:08,105 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 07:34:08,198 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-30 07:34:08,198 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-30 07:34:08,384 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-30 07:34:08,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1245940915] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-30 07:34:08,385 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-30 07:34:08,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2023-11-30 07:34:08,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001308432] [2023-11-30 07:34:08,388 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-30 07:34:08,388 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-30 07:34:08,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 07:34:08,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-30 07:34:08,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2023-11-30 07:34:08,394 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 160 [2023-11-30 07:34:08,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 133 transitions, 846 flow. Second operand has 23 states, 23 states have (on average 140.30434782608697) internal successors, (3227), 23 states have internal predecessors, (3227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 07:34:08,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 07:34:08,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 160 [2023-11-30 07:34:08,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 07:34:08,692 INFO L124 PetriNetUnfolderBase]: 2/194 cut-off events. [2023-11-30 07:34:08,693 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2023-11-30 07:34:08,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 672 conditions, 194 events. 2/194 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 7 event pairs, 0 based on Foata normal form. 0/190 useless extension candidates. Maximal degree in co-relation 531. Up to 69 conditions per place. [2023-11-30 07:34:08,694 INFO L140 encePairwiseOnDemand]: 154/160 looper letters, 45 selfloop transitions, 30 changer transitions 1/154 dead transitions. [2023-11-30 07:34:08,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 154 transitions, 1248 flow [2023-11-30 07:34:08,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-11-30 07:34:08,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-11-30 07:34:08,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4188 transitions. [2023-11-30 07:34:08,702 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8725 [2023-11-30 07:34:08,703 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4188 transitions. [2023-11-30 07:34:08,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4188 transitions. [2023-11-30 07:34:08,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 07:34:08,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4188 transitions. [2023-11-30 07:34:08,713 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 139.6) internal successors, (4188), 30 states have internal predecessors, (4188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 07:34:08,719 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 160.0) internal successors, (4960), 31 states have internal predecessors, (4960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 07:34:08,721 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 160.0) internal successors, (4960), 31 states have internal predecessors, (4960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 07:34:08,721 INFO L307 CegarLoopForPetriNet]: 83 programPoint places, 73 predicate places. [2023-11-30 07:34:08,721 INFO L500 AbstractCegarLoop]: Abstraction has has 156 places, 154 transitions, 1248 flow [2023-11-30 07:34:08,723 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 140.30434782608697) internal successors, (3227), 23 states have internal predecessors, (3227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 07:34:08,723 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 07:34:08,723 INFO L232 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 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, 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] [2023-11-30 07:34:08,737 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-30 07:34:08,929 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 07:34:08,930 INFO L425 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2023-11-30 07:34:08,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 07:34:08,930 INFO L85 PathProgramCache]: Analyzing trace with hash 44326423, now seen corresponding path program 3 times [2023-11-30 07:34:08,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 07:34:08,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845542782] [2023-11-30 07:34:08,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 07:34:08,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 07:34:08,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 07:34:09,192 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2023-11-30 07:34:09,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 07:34:09,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845542782] [2023-11-30 07:34:09,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845542782] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 07:34:09,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187909099] [2023-11-30 07:34:09,192 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-30 07:34:09,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 07:34:09,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 07:34:09,194 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 07:34:09,212 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 07:34:09,489 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-30 07:34:09,489 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-30 07:34:09,492 INFO L262 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-30 07:34:09,495 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 07:34:09,588 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2023-11-30 07:34:09,588 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-30 07:34:09,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [187909099] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 07:34:09,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-30 07:34:09,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2023-11-30 07:34:09,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792356588] [2023-11-30 07:34:09,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 07:34:09,590 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-30 07:34:09,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 07:34:09,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-30 07:34:09,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-30 07:34:09,591 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 160 [2023-11-30 07:34:09,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 154 transitions, 1248 flow. Second operand has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 07:34:09,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 07:34:09,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 160 [2023-11-30 07:34:09,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 07:34:09,640 INFO L124 PetriNetUnfolderBase]: 2/193 cut-off events. [2023-11-30 07:34:09,640 INFO L125 PetriNetUnfolderBase]: For 35/35 co-relation queries the response was YES. [2023-11-30 07:34:09,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 690 conditions, 193 events. 2/193 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 4 event pairs, 0 based on Foata normal form. 0/190 useless extension candidates. Maximal degree in co-relation 531. Up to 69 conditions per place. [2023-11-30 07:34:09,641 INFO L140 encePairwiseOnDemand]: 156/160 looper letters, 14 selfloop transitions, 5 changer transitions 1/153 dead transitions. [2023-11-30 07:34:09,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 153 transitions, 1282 flow [2023-11-30 07:34:09,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-30 07:34:09,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-30 07:34:09,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 556 transitions. [2023-11-30 07:34:09,643 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.86875 [2023-11-30 07:34:09,643 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 556 transitions. [2023-11-30 07:34:09,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 556 transitions. [2023-11-30 07:34:09,643 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 07:34:09,643 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 556 transitions. [2023-11-30 07:34:09,644 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 07:34:09,645 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 160.0) internal successors, (800), 5 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 07:34:09,646 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 160.0) internal successors, (800), 5 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 07:34:09,647 INFO L307 CegarLoopForPetriNet]: 83 programPoint places, 75 predicate places. [2023-11-30 07:34:09,647 INFO L500 AbstractCegarLoop]: Abstraction has has 158 places, 153 transitions, 1282 flow [2023-11-30 07:34:09,648 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 07:34:09,648 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 07:34:09,648 INFO L232 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 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, 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] [2023-11-30 07:34:09,660 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 07:34:09,855 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 07:34:09,855 INFO L425 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2023-11-30 07:34:09,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 07:34:09,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1374119401, now seen corresponding path program 1 times [2023-11-30 07:34:09,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 07:34:09,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123948445] [2023-11-30 07:34:09,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 07:34:09,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 07:34:09,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 07:34:09,990 INFO L134 CoverageAnalysis]: Checked inductivity of 371 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 326 trivial. 0 not checked. [2023-11-30 07:34:09,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 07:34:09,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123948445] [2023-11-30 07:34:09,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123948445] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 07:34:09,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 07:34:09,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-30 07:34:09,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088267109] [2023-11-30 07:34:09,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 07:34:09,991 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-30 07:34:09,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 07:34:09,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-30 07:34:09,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-30 07:34:09,993 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 160 [2023-11-30 07:34:09,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 153 transitions, 1282 flow. Second operand has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 07:34:09,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 07:34:09,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 160 [2023-11-30 07:34:09,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 07:34:10,030 INFO L124 PetriNetUnfolderBase]: 2/192 cut-off events. [2023-11-30 07:34:10,031 INFO L125 PetriNetUnfolderBase]: For 57/57 co-relation queries the response was YES. [2023-11-30 07:34:10,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 706 conditions, 192 events. 2/192 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 3 event pairs, 0 based on Foata normal form. 0/190 useless extension candidates. Maximal degree in co-relation 531. Up to 69 conditions per place. [2023-11-30 07:34:10,031 INFO L140 encePairwiseOnDemand]: 154/160 looper letters, 0 selfloop transitions, 0 changer transitions 152/152 dead transitions. [2023-11-30 07:34:10,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 152 transitions, 1312 flow [2023-11-30 07:34:10,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-30 07:34:10,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-30 07:34:10,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 692 transitions. [2023-11-30 07:34:10,033 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.865 [2023-11-30 07:34:10,033 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 692 transitions. [2023-11-30 07:34:10,033 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 692 transitions. [2023-11-30 07:34:10,034 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 07:34:10,034 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 692 transitions. [2023-11-30 07:34:10,035 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 138.4) internal successors, (692), 5 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 07:34:10,037 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 07:34:10,037 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 07:34:10,037 INFO L307 CegarLoopForPetriNet]: 83 programPoint places, 78 predicate places. [2023-11-30 07:34:10,037 INFO L500 AbstractCegarLoop]: Abstraction has has 161 places, 152 transitions, 1312 flow [2023-11-30 07:34:10,038 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 07:34:10,046 INFO L143 wickiGriesTestDumper]: Dumping Owicki-Gries test to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/09-regions_19-nested_nr.i_BEv2_AllErrorsAtOnce [2023-11-30 07:34:10,100 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 5 remaining) [2023-11-30 07:34:10,101 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 5 remaining) [2023-11-30 07:34:10,101 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 5 remaining) [2023-11-30 07:34:10,101 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 5 remaining) [2023-11-30 07:34:10,101 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-11-30 07:34:10,101 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-30 07:34:10,102 INFO L457 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1] [2023-11-30 07:34:10,104 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-30 07:34:10,104 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-11-30 07:34:10,112 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 07:34:10 BasicIcfg [2023-11-30 07:34:10,112 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-30 07:34:10,113 INFO L158 Benchmark]: Toolchain (without parser) took 7614.91ms. Allocated memory is still 543.2MB. Free memory was 488.6MB in the beginning and 326.7MB in the end (delta: 161.9MB). Peak memory consumption was 162.3MB. Max. memory is 16.0GB. [2023-11-30 07:34:10,113 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 364.9MB. Free memory is still 314.9MB. There was no memory consumed. Max. memory is 16.0GB. [2023-11-30 07:34:10,113 INFO L158 Benchmark]: CACSL2BoogieTranslator took 671.44ms. Allocated memory is still 543.2MB. Free memory was 488.1MB in the beginning and 448.7MB in the end (delta: 39.5MB). Peak memory consumption was 39.8MB. Max. memory is 16.0GB. [2023-11-30 07:34:10,113 INFO L158 Benchmark]: Boogie Procedure Inliner took 69.36ms. Allocated memory is still 543.2MB. Free memory was 448.7MB in the beginning and 445.8MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-11-30 07:34:10,114 INFO L158 Benchmark]: Boogie Preprocessor took 50.19ms. Allocated memory is still 543.2MB. Free memory was 445.8MB in the beginning and 443.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-11-30 07:34:10,114 INFO L158 Benchmark]: RCFGBuilder took 492.45ms. Allocated memory is still 543.2MB. Free memory was 443.7MB in the beginning and 498.6MB in the end (delta: -55.0MB). Peak memory consumption was 20.8MB. Max. memory is 16.0GB. [2023-11-30 07:34:10,114 INFO L158 Benchmark]: TraceAbstraction took 6325.08ms. Allocated memory is still 543.2MB. Free memory was 498.6MB in the beginning and 326.7MB in the end (delta: 171.9MB). Peak memory consumption was 170.9MB. Max. memory is 16.0GB. [2023-11-30 07:34:10,115 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 364.9MB. Free memory is still 314.9MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 671.44ms. Allocated memory is still 543.2MB. Free memory was 488.1MB in the beginning and 448.7MB in the end (delta: 39.5MB). Peak memory consumption was 39.8MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 69.36ms. Allocated memory is still 543.2MB. Free memory was 448.7MB in the beginning and 445.8MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 50.19ms. Allocated memory is still 543.2MB. Free memory was 445.8MB in the beginning and 443.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 492.45ms. Allocated memory is still 543.2MB. Free memory was 443.7MB in the beginning and 498.6MB in the end (delta: -55.0MB). Peak memory consumption was 20.8MB. Max. memory is 16.0GB. * TraceAbstraction took 6325.08ms. Allocated memory is still 543.2MB. Free memory was 498.6MB in the beginning and 326.7MB in the end (delta: 171.9MB). Peak memory consumption was 170.9MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1256]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1256]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1262]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1262]: 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 3 procedures, 202 locations, 5 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: 6.2s, OverallIterations: 9, TraceHistogramMax: 10, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 209 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 209 mSDsluCounter, 114 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 71 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 384 IncrementalHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 43 mSDtfsCounter, 384 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1055 GetRequests, 936 SyntacticMatches, 11 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 687 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1312occurred in iteration=9, InterpolantAutomatonStates: 91, 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, 0.6s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 1486 NumberOfCodeBlocks, 1423 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 1849 ConstructedInterpolants, 0 QuantifiedInterpolants, 2947 SizeOfPredicates, 27 NumberOfNonLiveVariables, 1738 ConjunctsInSsa, 37 ConjunctsInUnsatCore, 17 InterpolantComputations, 6 PerfectInterpolantSequences, 1369/1955 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 07:34:10,133 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...