/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg true --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/weaver/unroll-cond-3.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-175f719-m [2023-11-30 10:12:24,019 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-30 10:12:24,098 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2023-11-30 10:12:24,129 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-30 10:12:24,130 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-30 10:12:24,130 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-30 10:12:24,131 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-30 10:12:24,131 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-30 10:12:24,131 INFO L153 SettingsManager]: * Use SBE=true [2023-11-30 10:12:24,135 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-30 10:12:24,135 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-30 10:12:24,135 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-30 10:12:24,136 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-30 10:12:24,137 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-30 10:12:24,137 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-30 10:12:24,137 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-30 10:12:24,137 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-30 10:12:24,137 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-30 10:12:24,138 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-30 10:12:24,138 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-30 10:12:24,138 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-30 10:12:24,139 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-30 10:12:24,139 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-30 10:12:24,139 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-30 10:12:24,139 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-30 10:12:24,140 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-30 10:12:24,141 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-30 10:12:24,141 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-30 10:12:24,141 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-30 10:12:24,141 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-30 10:12:24,142 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-30 10:12:24,142 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-30 10:12:24,142 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-30 10:12:24,143 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-11-30 10:12:24,340 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-30 10:12:24,359 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-30 10:12:24,361 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-30 10:12:24,362 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-30 10:12:24,368 INFO L274 PluginConnector]: CDTParser initialized [2023-11-30 10:12:24,369 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/unroll-cond-3.wvr.c [2023-11-30 10:12:25,441 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-30 10:12:25,656 INFO L384 CDTParser]: Found 1 translation units. [2023-11-30 10:12:25,656 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-cond-3.wvr.c [2023-11-30 10:12:25,668 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dea5861e1/b55f5ea913784118ac8ad99e183706d7/FLAGdf548cfef [2023-11-30 10:12:26,017 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dea5861e1/b55f5ea913784118ac8ad99e183706d7 [2023-11-30 10:12:26,019 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-30 10:12:26,020 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-30 10:12:26,021 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-30 10:12:26,021 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-30 10:12:26,027 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-30 10:12:26,027 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 10:12:26" (1/1) ... [2023-11-30 10:12:26,029 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@287f7565 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 10:12:26, skipping insertion in model container [2023-11-30 10:12:26,029 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 10:12:26" (1/1) ... [2023-11-30 10:12:26,046 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-30 10:12:26,173 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-30 10:12:26,181 INFO L202 MainTranslator]: Completed pre-run [2023-11-30 10:12:26,202 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-30 10:12:26,213 INFO L206 MainTranslator]: Completed translation [2023-11-30 10:12:26,213 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 10:12:26 WrapperNode [2023-11-30 10:12:26,213 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-30 10:12:26,214 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-30 10:12:26,214 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-30 10:12:26,215 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-30 10:12:26,220 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 10:12:26" (1/1) ... [2023-11-30 10:12:26,226 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 10:12:26" (1/1) ... [2023-11-30 10:12:26,246 INFO L138 Inliner]: procedures = 24, calls = 38, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 171 [2023-11-30 10:12:26,247 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-30 10:12:26,247 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-30 10:12:26,247 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-30 10:12:26,247 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-30 10:12:26,259 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 10:12:26" (1/1) ... [2023-11-30 10:12:26,260 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 10:12:26" (1/1) ... [2023-11-30 10:12:26,263 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 10:12:26" (1/1) ... [2023-11-30 10:12:26,263 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 10:12:26" (1/1) ... [2023-11-30 10:12:26,269 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 10:12:26" (1/1) ... [2023-11-30 10:12:26,272 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 10:12:26" (1/1) ... [2023-11-30 10:12:26,273 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 10:12:26" (1/1) ... [2023-11-30 10:12:26,274 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 10:12:26" (1/1) ... [2023-11-30 10:12:26,278 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-30 10:12:26,278 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-30 10:12:26,278 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-30 10:12:26,284 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-30 10:12:26,284 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 10:12:26" (1/1) ... [2023-11-30 10:12:26,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-30 10:12:26,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 10:12:26,321 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-30 10:12:26,352 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-30 10:12:26,352 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-30 10:12:26,352 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-30 10:12:26,352 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-30 10:12:26,352 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-30 10:12:26,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-30 10:12:26,352 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-30 10:12:26,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-30 10:12:26,348 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 10:12:26,354 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-30 10:12:26,354 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-30 10:12:26,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-30 10:12:26,354 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-30 10:12:26,354 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-30 10:12:26,355 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-30 10:12:26,476 INFO L241 CfgBuilder]: Building ICFG [2023-11-30 10:12:26,479 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-30 10:12:26,831 INFO L282 CfgBuilder]: Performing block encoding [2023-11-30 10:12:26,842 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-30 10:12:26,842 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-30 10:12:26,844 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 10:12:26 BoogieIcfgContainer [2023-11-30 10:12:26,844 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-30 10:12:26,846 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-30 10:12:26,846 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-30 10:12:26,849 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-30 10:12:26,849 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 10:12:26" (1/3) ... [2023-11-30 10:12:26,849 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8b56703 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 10:12:26, skipping insertion in model container [2023-11-30 10:12:26,850 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 10:12:26" (2/3) ... [2023-11-30 10:12:26,850 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8b56703 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 10:12:26, skipping insertion in model container [2023-11-30 10:12:26,850 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 10:12:26" (3/3) ... [2023-11-30 10:12:26,851 INFO L112 eAbstractionObserver]: Analyzing ICFG unroll-cond-3.wvr.c [2023-11-30 10:12:26,867 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-30 10:12:26,867 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-30 10:12:26,867 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-30 10:12:26,981 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-30 10:12:27,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 206 places, 217 transitions, 448 flow [2023-11-30 10:12:27,073 INFO L124 PetriNetUnfolderBase]: 18/215 cut-off events. [2023-11-30 10:12:27,073 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-30 10:12:27,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 224 conditions, 215 events. 18/215 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 338 event pairs, 0 based on Foata normal form. 0/195 useless extension candidates. Maximal degree in co-relation 113. Up to 2 conditions per place. [2023-11-30 10:12:27,081 INFO L82 GeneralOperation]: Start removeDead. Operand has 206 places, 217 transitions, 448 flow [2023-11-30 10:12:27,084 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 63 places, 66 transitions, 132 flow [2023-11-30 10:12:27,100 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-30 10:12:27,105 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;@6c1ee89d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-30 10:12:27,106 INFO L363 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-30 10:12:27,121 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-30 10:12:27,121 INFO L124 PetriNetUnfolderBase]: 3/60 cut-off events. [2023-11-30 10:12:27,121 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-30 10:12:27,121 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 10:12:27,122 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 10:12:27,122 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-30 10:12:27,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 10:12:27,126 INFO L85 PathProgramCache]: Analyzing trace with hash -409071821, now seen corresponding path program 1 times [2023-11-30 10:12:27,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 10:12:27,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530706379] [2023-11-30 10:12:27,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 10:12:27,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 10:12:27,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 10:12:27,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 10:12:27,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 10:12:27,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530706379] [2023-11-30 10:12:27,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530706379] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 10:12:27,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 10:12:27,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-30 10:12:27,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594599395] [2023-11-30 10:12:27,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 10:12:27,467 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-30 10:12:27,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 10:12:27,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-30 10:12:27,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-30 10:12:27,499 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 217 [2023-11-30 10:12:27,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 66 transitions, 132 flow. Second operand has 4 states, 4 states have (on average 186.5) internal successors, (746), 4 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:12:27,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 10:12:27,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 217 [2023-11-30 10:12:27,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 10:12:27,566 INFO L124 PetriNetUnfolderBase]: 1/73 cut-off events. [2023-11-30 10:12:27,566 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-30 10:12:27,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 73 events. 1/73 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 8 event pairs, 0 based on Foata normal form. 3/71 useless extension candidates. Maximal degree in co-relation 0. Up to 12 conditions per place. [2023-11-30 10:12:27,568 INFO L140 encePairwiseOnDemand]: 208/217 looper letters, 14 selfloop transitions, 4 changer transitions 3/70 dead transitions. [2023-11-30 10:12:27,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 70 transitions, 176 flow [2023-11-30 10:12:27,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-30 10:12:27,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-30 10:12:27,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 948 transitions. [2023-11-30 10:12:27,587 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8737327188940092 [2023-11-30 10:12:27,587 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 948 transitions. [2023-11-30 10:12:27,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 948 transitions. [2023-11-30 10:12:27,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 10:12:27,593 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 948 transitions. [2023-11-30 10:12:27,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 189.6) internal successors, (948), 5 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:12:27,607 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 217.0) internal successors, (1302), 6 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:12:27,608 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 217.0) internal successors, (1302), 6 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:12:27,613 INFO L307 CegarLoopForPetriNet]: 63 programPoint places, 4 predicate places. [2023-11-30 10:12:27,613 INFO L500 AbstractCegarLoop]: Abstraction has has 67 places, 70 transitions, 176 flow [2023-11-30 10:12:27,614 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 186.5) internal successors, (746), 4 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:12:27,614 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 10:12:27,615 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 10:12:27,615 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-30 10:12:27,615 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-30 10:12:27,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 10:12:27,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1122513713, now seen corresponding path program 1 times [2023-11-30 10:12:27,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 10:12:27,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734889535] [2023-11-30 10:12:27,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 10:12:27,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 10:12:27,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 10:12:27,881 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 10:12:27,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 10:12:27,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734889535] [2023-11-30 10:12:27,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734889535] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 10:12:27,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [211574413] [2023-11-30 10:12:27,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 10:12:27,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 10:12:27,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 10:12:27,890 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-30 10:12:27,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-30 10:12:27,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 10:12:27,982 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-30 10:12:27,988 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 10:12:28,075 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 10:12:28,076 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-30 10:12:28,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [211574413] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 10:12:28,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-30 10:12:28,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-11-30 10:12:28,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175760173] [2023-11-30 10:12:28,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 10:12:28,078 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-30 10:12:28,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 10:12:28,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-30 10:12:28,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-30 10:12:28,082 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 217 [2023-11-30 10:12:28,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 70 transitions, 176 flow. Second operand has 6 states, 6 states have (on average 187.16666666666666) internal successors, (1123), 6 states have internal predecessors, (1123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:12:28,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 10:12:28,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 217 [2023-11-30 10:12:28,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 10:12:28,179 INFO L124 PetriNetUnfolderBase]: 1/72 cut-off events. [2023-11-30 10:12:28,180 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-30 10:12:28,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 72 events. 1/72 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. 0/68 useless extension candidates. Maximal degree in co-relation 0. Up to 11 conditions per place. [2023-11-30 10:12:28,180 INFO L140 encePairwiseOnDemand]: 212/217 looper letters, 11 selfloop transitions, 6 changer transitions 3/69 dead transitions. [2023-11-30 10:12:28,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 69 transitions, 206 flow [2023-11-30 10:12:28,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-30 10:12:28,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-30 10:12:28,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1313 transitions. [2023-11-30 10:12:28,184 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8643844634628045 [2023-11-30 10:12:28,184 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1313 transitions. [2023-11-30 10:12:28,184 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1313 transitions. [2023-11-30 10:12:28,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 10:12:28,186 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1313 transitions. [2023-11-30 10:12:28,188 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 187.57142857142858) internal successors, (1313), 7 states have internal predecessors, (1313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:12:28,191 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 217.0) internal successors, (1736), 8 states have internal predecessors, (1736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:12:28,192 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 217.0) internal successors, (1736), 8 states have internal predecessors, (1736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:12:28,193 INFO L307 CegarLoopForPetriNet]: 63 programPoint places, 9 predicate places. [2023-11-30 10:12:28,193 INFO L500 AbstractCegarLoop]: Abstraction has has 72 places, 69 transitions, 206 flow [2023-11-30 10:12:28,194 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 187.16666666666666) internal successors, (1123), 6 states have internal predecessors, (1123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:12:28,194 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 10:12:28,194 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 10:12:28,203 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-30 10:12:28,400 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 10:12:28,401 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-30 10:12:28,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 10:12:28,401 INFO L85 PathProgramCache]: Analyzing trace with hash -438186404, now seen corresponding path program 1 times [2023-11-30 10:12:28,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 10:12:28,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464094672] [2023-11-30 10:12:28,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 10:12:28,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 10:12:28,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 10:12:28,557 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 10:12:28,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 10:12:28,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464094672] [2023-11-30 10:12:28,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464094672] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 10:12:28,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509242146] [2023-11-30 10:12:28,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 10:12:28,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 10:12:28,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 10:12:28,561 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-30 10:12:28,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-30 10:12:28,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 10:12:28,642 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-30 10:12:28,645 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 10:12:28,699 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 10:12:28,700 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-30 10:12:28,755 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 10:12:28,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1509242146] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-30 10:12:28,756 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-30 10:12:28,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-30 10:12:28,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669219195] [2023-11-30 10:12:28,757 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-30 10:12:28,757 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-30 10:12:28,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 10:12:28,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-30 10:12:28,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-30 10:12:28,761 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 217 [2023-11-30 10:12:28,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 69 transitions, 206 flow. Second operand has 12 states, 12 states have (on average 187.83333333333334) internal successors, (2254), 12 states have internal predecessors, (2254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:12:28,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 10:12:28,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 217 [2023-11-30 10:12:28,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 10:12:28,889 INFO L124 PetriNetUnfolderBase]: 1/101 cut-off events. [2023-11-30 10:12:28,889 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-11-30 10:12:28,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 216 conditions, 101 events. 1/101 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 5 event pairs, 0 based on Foata normal form. 0/97 useless extension candidates. Maximal degree in co-relation 0. Up to 31 conditions per place. [2023-11-30 10:12:28,890 INFO L140 encePairwiseOnDemand]: 211/217 looper letters, 23 selfloop transitions, 14 changer transitions 3/89 dead transitions. [2023-11-30 10:12:28,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 89 transitions, 400 flow [2023-11-30 10:12:28,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-30 10:12:28,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-30 10:12:28,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2630 transitions. [2023-11-30 10:12:28,897 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8657011191573404 [2023-11-30 10:12:28,897 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2630 transitions. [2023-11-30 10:12:28,897 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2630 transitions. [2023-11-30 10:12:28,898 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 10:12:28,898 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2630 transitions. [2023-11-30 10:12:28,904 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 187.85714285714286) internal successors, (2630), 14 states have internal predecessors, (2630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:12:28,909 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 217.0) internal successors, (3255), 15 states have internal predecessors, (3255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:12:28,911 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 217.0) internal successors, (3255), 15 states have internal predecessors, (3255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:12:28,911 INFO L307 CegarLoopForPetriNet]: 63 programPoint places, 22 predicate places. [2023-11-30 10:12:28,912 INFO L500 AbstractCegarLoop]: Abstraction has has 85 places, 89 transitions, 400 flow [2023-11-30 10:12:28,913 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 187.83333333333334) internal successors, (2254), 12 states have internal predecessors, (2254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:12:28,913 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 10:12:28,913 INFO L232 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 10:12:28,921 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-30 10:12:29,120 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-30 10:12:29,121 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-30 10:12:29,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 10:12:29,121 INFO L85 PathProgramCache]: Analyzing trace with hash 2122473992, now seen corresponding path program 2 times [2023-11-30 10:12:29,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 10:12:29,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905790741] [2023-11-30 10:12:29,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 10:12:29,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 10:12:29,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 10:12:29,368 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 10:12:29,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 10:12:29,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905790741] [2023-11-30 10:12:29,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905790741] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 10:12:29,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051659566] [2023-11-30 10:12:29,370 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-30 10:12:29,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 10:12:29,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 10:12:29,372 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-30 10:12:29,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-30 10:12:29,446 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-30 10:12:29,446 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-30 10:12:29,447 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-30 10:12:29,450 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 10:12:29,611 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-30 10:12:29,612 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-30 10:12:29,746 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-30 10:12:29,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1051659566] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-30 10:12:29,747 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-30 10:12:29,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2023-11-30 10:12:29,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030612464] [2023-11-30 10:12:29,747 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-30 10:12:29,748 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-30 10:12:29,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 10:12:29,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-30 10:12:29,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2023-11-30 10:12:29,753 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 217 [2023-11-30 10:12:29,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 89 transitions, 400 flow. Second operand has 18 states, 18 states have (on average 168.88888888888889) internal successors, (3040), 18 states have internal predecessors, (3040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:12:29,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 10:12:29,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 217 [2023-11-30 10:12:29,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 10:12:30,157 INFO L124 PetriNetUnfolderBase]: 1/112 cut-off events. [2023-11-30 10:12:30,157 INFO L125 PetriNetUnfolderBase]: For 84/84 co-relation queries the response was YES. [2023-11-30 10:12:30,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 309 conditions, 112 events. 1/112 cut-off events. For 84/84 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 4 event pairs, 0 based on Foata normal form. 0/109 useless extension candidates. Maximal degree in co-relation 0. Up to 39 conditions per place. [2023-11-30 10:12:30,158 INFO L140 encePairwiseOnDemand]: 206/217 looper letters, 0 selfloop transitions, 0 changer transitions 97/97 dead transitions. [2023-11-30 10:12:30,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 97 transitions, 578 flow [2023-11-30 10:12:30,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-30 10:12:30,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-11-30 10:12:30,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4019 transitions. [2023-11-30 10:12:30,166 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7716973886328725 [2023-11-30 10:12:30,166 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4019 transitions. [2023-11-30 10:12:30,166 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4019 transitions. [2023-11-30 10:12:30,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 10:12:30,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4019 transitions. [2023-11-30 10:12:30,177 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 167.45833333333334) internal successors, (4019), 24 states have internal predecessors, (4019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:12:30,185 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 217.0) internal successors, (5425), 25 states have internal predecessors, (5425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:12:30,187 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 217.0) internal successors, (5425), 25 states have internal predecessors, (5425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:12:30,187 INFO L307 CegarLoopForPetriNet]: 63 programPoint places, 44 predicate places. [2023-11-30 10:12:30,188 INFO L500 AbstractCegarLoop]: Abstraction has has 107 places, 97 transitions, 578 flow [2023-11-30 10:12:30,189 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 168.88888888888889) internal successors, (3040), 18 states have internal predecessors, (3040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:12:30,197 INFO L143 wickiGriesTestDumper]: Dumping Owicki-Gries test to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/unroll-cond-3.wvr.c_BEv2_AllErrorsAtOnce [2023-11-30 10:12:30,246 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2023-11-30 10:12:30,247 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2023-11-30 10:12:30,247 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-30 10:12:30,247 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-11-30 10:12:30,255 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-30 10:12:30,452 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 10:12:30,453 INFO L457 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2023-11-30 10:12:30,456 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-30 10:12:30,456 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-11-30 10:12:30,461 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 10:12:30 BasicIcfg [2023-11-30 10:12:30,461 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-30 10:12:30,463 INFO L158 Benchmark]: Toolchain (without parser) took 4442.56ms. Allocated memory is still 539.0MB. Free memory was 496.2MB in the beginning and 283.3MB in the end (delta: 213.0MB). Peak memory consumption was 212.6MB. Max. memory is 16.0GB. [2023-11-30 10:12:30,463 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 356.5MB. Free memory is still 308.4MB. There was no memory consumed. Max. memory is 16.0GB. [2023-11-30 10:12:30,463 INFO L158 Benchmark]: CACSL2BoogieTranslator took 192.64ms. Allocated memory is still 539.0MB. Free memory was 495.9MB in the beginning and 484.2MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-11-30 10:12:30,464 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.43ms. Allocated memory is still 539.0MB. Free memory was 484.2MB in the beginning and 481.9MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-11-30 10:12:30,464 INFO L158 Benchmark]: Boogie Preprocessor took 30.46ms. Allocated memory is still 539.0MB. Free memory was 481.9MB in the beginning and 480.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-11-30 10:12:30,465 INFO L158 Benchmark]: RCFGBuilder took 565.58ms. Allocated memory is still 539.0MB. Free memory was 480.1MB in the beginning and 461.2MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-11-30 10:12:30,465 INFO L158 Benchmark]: TraceAbstraction took 3616.38ms. Allocated memory is still 539.0MB. Free memory was 460.6MB in the beginning and 283.3MB in the end (delta: 177.4MB). Peak memory consumption was 177.0MB. Max. memory is 16.0GB. [2023-11-30 10:12:30,471 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 356.5MB. Free memory is still 308.4MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 192.64ms. Allocated memory is still 539.0MB. Free memory was 495.9MB in the beginning and 484.2MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 32.43ms. Allocated memory is still 539.0MB. Free memory was 484.2MB in the beginning and 481.9MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 30.46ms. Allocated memory is still 539.0MB. Free memory was 481.9MB in the beginning and 480.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 565.58ms. Allocated memory is still 539.0MB. Free memory was 480.1MB in the beginning and 461.2MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * TraceAbstraction took 3616.38ms. Allocated memory is still 539.0MB. Free memory was 460.6MB in the beginning and 283.3MB in the end (delta: 177.4MB). Peak memory consumption was 177.0MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 109]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 109]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 294 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.4s, OverallIterations: 4, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 194 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 194 mSDsluCounter, 89 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 68 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 253 IncrementalHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 21 mSDtfsCounter, 253 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 441 GetRequests, 370 SyntacticMatches, 5 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 343 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=578occurred in iteration=4, InterpolantAutomatonStates: 50, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 509 NumberOfCodeBlocks, 469 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 662 ConstructedInterpolants, 0 QuantifiedInterpolants, 1252 SizeOfPredicates, 12 NumberOfNonLiveVariables, 412 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 9 InterpolantComputations, 2 PerfectInterpolantSequences, 135/314 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-30 10:12:30,496 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...