/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -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 -i ../../../trunk/examples/svcomp/pthread/bigshot_s2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-a20a710-m [2023-12-09 14:47:06,875 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-09 14:47:06,945 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 [2023-12-09 14:47:06,971 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-09 14:47:06,971 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-09 14:47:06,972 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-09 14:47:06,972 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-09 14:47:06,972 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-09 14:47:06,973 INFO L153 SettingsManager]: * Use SBE=true [2023-12-09 14:47:06,975 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-09 14:47:06,976 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-09 14:47:06,976 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-09 14:47:06,976 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-09 14:47:06,977 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-09 14:47:06,977 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-09 14:47:06,977 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-09 14:47:06,978 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-09 14:47:06,978 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-09 14:47:06,978 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-09 14:47:06,978 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-09 14:47:06,978 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-09 14:47:06,979 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-09 14:47:06,979 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-09 14:47:06,979 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-12-09 14:47:06,979 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-09 14:47:06,979 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 14:47:06,980 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-09 14:47:06,980 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-09 14:47:06,980 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-09 14:47:06,980 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-09 14:47:06,981 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-09 14:47:06,981 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-09 14:47:06,981 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-09 14:47:06,981 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true [2023-12-09 14:47:07,183 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-09 14:47:07,202 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-09 14:47:07,204 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-09 14:47:07,205 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-09 14:47:07,210 INFO L274 PluginConnector]: CDTParser initialized [2023-12-09 14:47:07,211 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/bigshot_s2.i [2023-12-09 14:47:08,352 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-09 14:47:08,555 INFO L384 CDTParser]: Found 1 translation units. [2023-12-09 14:47:08,555 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/bigshot_s2.i [2023-12-09 14:47:08,566 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff1be67eb/54ee35ec8d42417f9dbbbee328308e0d/FLAG037df90bc [2023-12-09 14:47:08,576 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff1be67eb/54ee35ec8d42417f9dbbbee328308e0d [2023-12-09 14:47:08,578 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-09 14:47:08,578 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-09 14:47:08,579 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-09 14:47:08,579 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-09 14:47:08,582 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-09 14:47:08,582 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 02:47:08" (1/1) ... [2023-12-09 14:47:08,583 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43c50650 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:47:08, skipping insertion in model container [2023-12-09 14:47:08,583 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 02:47:08" (1/1) ... [2023-12-09 14:47:08,639 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-09 14:47:09,002 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/bigshot_s2.i[55203,55216] [2023-12-09 14:47:09,016 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 14:47:09,026 INFO L202 MainTranslator]: Completed pre-run [2023-12-09 14:47:09,059 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/bigshot_s2.i[55203,55216] [2023-12-09 14:47:09,070 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 14:47:09,118 INFO L206 MainTranslator]: Completed translation [2023-12-09 14:47:09,118 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:47:09 WrapperNode [2023-12-09 14:47:09,118 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-09 14:47:09,119 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-09 14:47:09,119 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-09 14:47:09,119 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-09 14:47:09,124 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:47:09" (1/1) ... [2023-12-09 14:47:09,146 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:47:09" (1/1) ... [2023-12-09 14:47:09,167 INFO L138 Inliner]: procedures = 323, calls = 33, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2023-12-09 14:47:09,168 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-09 14:47:09,169 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-09 14:47:09,169 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-09 14:47:09,169 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-09 14:47:09,174 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:47:09" (1/1) ... [2023-12-09 14:47:09,174 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:47:09" (1/1) ... [2023-12-09 14:47:09,184 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:47:09" (1/1) ... [2023-12-09 14:47:09,185 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:47:09" (1/1) ... [2023-12-09 14:47:09,191 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:47:09" (1/1) ... [2023-12-09 14:47:09,193 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:47:09" (1/1) ... [2023-12-09 14:47:09,194 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:47:09" (1/1) ... [2023-12-09 14:47:09,194 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:47:09" (1/1) ... [2023-12-09 14:47:09,196 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-09 14:47:09,196 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-09 14:47:09,197 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-09 14:47:09,197 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-09 14:47:09,197 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:47:09" (1/1) ... [2023-12-09 14:47:09,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 14:47:09,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 14:47:09,223 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) [2023-12-09 14:47:09,237 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 [2023-12-09 14:47:09,255 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-09 14:47:09,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-09 14:47:09,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-12-09 14:47:09,255 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-09 14:47:09,256 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-12-09 14:47:09,256 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-12-09 14:47:09,256 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-12-09 14:47:09,256 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-12-09 14:47:09,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-09 14:47:09,256 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-09 14:47:09,257 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-09 14:47:09,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-09 14:47:09,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-09 14:47:09,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-09 14:47:09,258 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-12-09 14:47:09,385 INFO L241 CfgBuilder]: Building ICFG [2023-12-09 14:47:09,386 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-09 14:47:09,495 INFO L282 CfgBuilder]: Performing block encoding [2023-12-09 14:47:09,506 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-09 14:47:09,506 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-09 14:47:09,507 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 02:47:09 BoogieIcfgContainer [2023-12-09 14:47:09,507 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-09 14:47:09,509 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-09 14:47:09,509 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-09 14:47:09,511 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-09 14:47:09,511 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 02:47:08" (1/3) ... [2023-12-09 14:47:09,511 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55fd5007 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 02:47:09, skipping insertion in model container [2023-12-09 14:47:09,512 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:47:09" (2/3) ... [2023-12-09 14:47:09,512 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55fd5007 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 02:47:09, skipping insertion in model container [2023-12-09 14:47:09,512 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 02:47:09" (3/3) ... [2023-12-09 14:47:09,513 INFO L112 eAbstractionObserver]: Analyzing ICFG bigshot_s2.i [2023-12-09 14:47:09,525 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-09 14:47:09,525 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-09 14:47:09,525 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-09 14:47:09,609 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-12-09 14:47:09,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 89 places, 86 transitions, 186 flow [2023-12-09 14:47:09,806 INFO L124 PetriNetUnfolderBase]: 4/84 cut-off events. [2023-12-09 14:47:09,806 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-12-09 14:47:09,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 84 events. 4/84 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 52 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 53. Up to 2 conditions per place. [2023-12-09 14:47:09,809 INFO L82 GeneralOperation]: Start removeDead. Operand has 89 places, 86 transitions, 186 flow [2023-12-09 14:47:09,814 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 74 places, 70 transitions, 152 flow [2023-12-09 14:47:09,824 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-09 14:47:09,828 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;@1e5ff89e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-09 14:47:09,829 INFO L363 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-12-09 14:47:09,853 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-09 14:47:09,853 INFO L124 PetriNetUnfolderBase]: 3/69 cut-off events. [2023-12-09 14:47:09,853 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-12-09 14:47:09,853 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:47:09,854 INFO L233 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] [2023-12-09 14:47:09,855 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 14:47:09,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:47:09,859 INFO L85 PathProgramCache]: Analyzing trace with hash 487053175, now seen corresponding path program 1 times [2023-12-09 14:47:09,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:47:09,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016073215] [2023-12-09 14:47:09,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:47:09,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:47:10,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:47:10,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:47:10,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:47:10,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016073215] [2023-12-09 14:47:10,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016073215] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:47:10,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:47:10,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-09 14:47:10,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43617379] [2023-12-09 14:47:10,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:47:10,327 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-09 14:47:10,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:47:10,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-09 14:47:10,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-09 14:47:10,364 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 86 [2023-12-09 14:47:10,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 70 transitions, 152 flow. Second operand has 4 states, 4 states have (on average 73.5) internal successors, (294), 4 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:10,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:47:10,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 86 [2023-12-09 14:47:10,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:47:10,415 INFO L124 PetriNetUnfolderBase]: 1/68 cut-off events. [2023-12-09 14:47:10,415 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-12-09 14:47:10,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 68 events. 1/68 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 14 event pairs, 0 based on Foata normal form. 1/68 useless extension candidates. Maximal degree in co-relation 42. Up to 7 conditions per place. [2023-12-09 14:47:10,417 INFO L140 encePairwiseOnDemand]: 81/86 looper letters, 8 selfloop transitions, 3 changer transitions 0/68 dead transitions. [2023-12-09 14:47:10,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 68 transitions, 170 flow [2023-12-09 14:47:10,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-09 14:47:10,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-12-09 14:47:10,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 368 transitions. [2023-12-09 14:47:10,430 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8558139534883721 [2023-12-09 14:47:10,430 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 368 transitions. [2023-12-09 14:47:10,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 368 transitions. [2023-12-09 14:47:10,432 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:47:10,433 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 368 transitions. [2023-12-09 14:47:10,436 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 73.6) internal successors, (368), 5 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:10,440 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 86.0) internal successors, (516), 6 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:10,440 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 86.0) internal successors, (516), 6 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:10,443 INFO L308 CegarLoopForPetriNet]: 74 programPoint places, 4 predicate places. [2023-12-09 14:47:10,444 INFO L500 AbstractCegarLoop]: Abstraction has has 78 places, 68 transitions, 170 flow [2023-12-09 14:47:10,444 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 73.5) internal successors, (294), 4 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:10,444 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:47:10,444 INFO L233 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] [2023-12-09 14:47:10,445 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-09 14:47:10,445 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 14:47:10,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:47:10,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1041488884, now seen corresponding path program 1 times [2023-12-09 14:47:10,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:47:10,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130143338] [2023-12-09 14:47:10,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:47:10,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:47:10,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:47:11,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:47:11,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:47:11,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130143338] [2023-12-09 14:47:11,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130143338] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:47:11,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:47:11,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-09 14:47:11,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359808913] [2023-12-09 14:47:11,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:47:11,051 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-09 14:47:11,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:47:11,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-09 14:47:11,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-09 14:47:11,075 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 86 [2023-12-09 14:47:11,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 68 transitions, 170 flow. Second operand has 11 states, 11 states have (on average 44.18181818181818) internal successors, (486), 11 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:11,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:47:11,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 86 [2023-12-09 14:47:11,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:47:11,313 INFO L124 PetriNetUnfolderBase]: 18/117 cut-off events. [2023-12-09 14:47:11,313 INFO L125 PetriNetUnfolderBase]: For 18/19 co-relation queries the response was YES. [2023-12-09 14:47:11,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 219 conditions, 117 events. 18/117 cut-off events. For 18/19 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 177 event pairs, 1 based on Foata normal form. 0/114 useless extension candidates. Maximal degree in co-relation 138. Up to 26 conditions per place. [2023-12-09 14:47:11,314 INFO L140 encePairwiseOnDemand]: 76/86 looper letters, 38 selfloop transitions, 10 changer transitions 0/79 dead transitions. [2023-12-09 14:47:11,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 79 transitions, 288 flow [2023-12-09 14:47:11,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-09 14:47:11,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-12-09 14:47:11,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 459 transitions. [2023-12-09 14:47:11,319 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5337209302325582 [2023-12-09 14:47:11,319 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 459 transitions. [2023-12-09 14:47:11,319 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 459 transitions. [2023-12-09 14:47:11,320 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:47:11,320 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 459 transitions. [2023-12-09 14:47:11,322 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 45.9) internal successors, (459), 10 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:11,326 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 86.0) internal successors, (946), 11 states have internal predecessors, (946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:11,326 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 86.0) internal successors, (946), 11 states have internal predecessors, (946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:11,327 INFO L308 CegarLoopForPetriNet]: 74 programPoint places, 13 predicate places. [2023-12-09 14:47:11,327 INFO L500 AbstractCegarLoop]: Abstraction has has 87 places, 79 transitions, 288 flow [2023-12-09 14:47:11,327 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 44.18181818181818) internal successors, (486), 11 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:11,327 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:47:11,327 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:47:11,327 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-09 14:47:11,328 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 14:47:11,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:47:11,328 INFO L85 PathProgramCache]: Analyzing trace with hash -19553374, now seen corresponding path program 1 times [2023-12-09 14:47:11,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:47:11,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676805712] [2023-12-09 14:47:11,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:47:11,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:47:11,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:47:11,920 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:47:11,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:47:11,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676805712] [2023-12-09 14:47:11,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676805712] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 14:47:11,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [456366486] [2023-12-09 14:47:11,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:47:11,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 14:47:11,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 14:47:11,948 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) [2023-12-09 14:47:11,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-09 14:47:12,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:47:12,066 INFO L262 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 43 conjunts are in the unsatisfiable core [2023-12-09 14:47:12,073 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 14:47:12,192 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-12-09 14:47:12,193 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2023-12-09 14:47:12,229 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-12-09 14:47:12,230 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-12-09 14:47:12,269 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-12-09 14:47:12,385 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-12-09 14:47:12,572 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-12-09 14:47:12,572 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2023-12-09 14:47:12,687 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-12-09 14:47:12,688 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 21 [2023-12-09 14:47:12,835 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:47:12,835 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 14:47:13,602 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:47:13,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [456366486] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 14:47:13,603 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 14:47:13,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 19, 17] total 43 [2023-12-09 14:47:13,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838566809] [2023-12-09 14:47:13,603 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 14:47:13,606 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-12-09 14:47:13,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:47:13,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-12-09 14:47:13,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=1658, Unknown=0, NotChecked=0, Total=1806 [2023-12-09 14:47:13,634 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 86 [2023-12-09 14:47:13,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 79 transitions, 288 flow. Second operand has 43 states, 43 states have (on average 30.023255813953487) internal successors, (1291), 43 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:13,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:47:13,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 86 [2023-12-09 14:47:13,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:47:14,724 INFO L124 PetriNetUnfolderBase]: 42/194 cut-off events. [2023-12-09 14:47:14,725 INFO L125 PetriNetUnfolderBase]: For 67/69 co-relation queries the response was YES. [2023-12-09 14:47:14,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 513 conditions, 194 events. 42/194 cut-off events. For 67/69 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 501 event pairs, 2 based on Foata normal form. 1/189 useless extension candidates. Maximal degree in co-relation 396. Up to 81 conditions per place. [2023-12-09 14:47:14,726 INFO L140 encePairwiseOnDemand]: 66/86 looper letters, 58 selfloop transitions, 20 changer transitions 13/113 dead transitions. [2023-12-09 14:47:14,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 113 transitions, 603 flow [2023-12-09 14:47:14,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-09 14:47:14,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-12-09 14:47:14,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 711 transitions. [2023-12-09 14:47:14,735 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.35945399393326594 [2023-12-09 14:47:14,735 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 711 transitions. [2023-12-09 14:47:14,735 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 711 transitions. [2023-12-09 14:47:14,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:47:14,738 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 711 transitions. [2023-12-09 14:47:14,740 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 30.91304347826087) internal successors, (711), 23 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) [2023-12-09 14:47:14,744 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 86.0) internal successors, (2064), 24 states have internal predecessors, (2064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:14,744 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 86.0) internal successors, (2064), 24 states have internal predecessors, (2064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:14,745 INFO L308 CegarLoopForPetriNet]: 74 programPoint places, 35 predicate places. [2023-12-09 14:47:14,745 INFO L500 AbstractCegarLoop]: Abstraction has has 109 places, 113 transitions, 603 flow [2023-12-09 14:47:14,747 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 30.023255813953487) internal successors, (1291), 43 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:14,747 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:47:14,747 INFO L233 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:47:14,771 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-09 14:47:14,970 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 14:47:14,971 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 14:47:14,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:47:14,971 INFO L85 PathProgramCache]: Analyzing trace with hash 2054993832, now seen corresponding path program 2 times [2023-12-09 14:47:14,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:47:14,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021029473] [2023-12-09 14:47:14,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:47:14,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:47:15,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:47:15,958 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:47:15,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:47:15,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021029473] [2023-12-09 14:47:15,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021029473] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 14:47:15,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1997292349] [2023-12-09 14:47:15,959 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-09 14:47:15,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 14:47:15,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 14:47:15,973 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) [2023-12-09 14:47:15,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-09 14:47:16,055 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-09 14:47:16,055 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 14:47:16,056 INFO L262 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 40 conjunts are in the unsatisfiable core [2023-12-09 14:47:16,061 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 14:47:16,113 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-12-09 14:47:16,113 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2023-12-09 14:47:16,152 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-12-09 14:47:16,152 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2023-12-09 14:47:16,221 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-12-09 14:47:16,263 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-12-09 14:47:16,263 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-12-09 14:47:16,371 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-12-09 14:47:16,504 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-12-09 14:47:16,571 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-12-09 14:47:16,628 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-12-09 14:47:16,718 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-12-09 14:47:16,778 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-12-09 14:47:16,800 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:47:16,800 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 14:47:16,866 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_105 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_105) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset| 1)))) is different from false [2023-12-09 14:47:16,902 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_105 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_105) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1| 2 |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset|)))) is different from false [2023-12-09 14:47:16,914 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_105 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_105) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1| 3 |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset|)))) is different from false [2023-12-09 14:47:16,922 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_105 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_105) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset| 4)))) is different from false [2023-12-09 14:47:17,460 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 485 treesize of output 465 [2023-12-09 14:47:17,473 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 100 treesize of output 92 [2023-12-09 14:47:17,479 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 39 [2023-12-09 14:47:17,485 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 46 [2023-12-09 14:47:17,843 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 35 not checked. [2023-12-09 14:47:17,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1997292349] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 14:47:17,843 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 14:47:17,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18, 18] total 48 [2023-12-09 14:47:17,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351615039] [2023-12-09 14:47:17,844 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 14:47:17,844 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-12-09 14:47:17,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:47:17,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-12-09 14:47:17,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1716, Unknown=13, NotChecked=348, Total=2256 [2023-12-09 14:47:17,847 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 86 [2023-12-09 14:47:17,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 113 transitions, 603 flow. Second operand has 48 states, 48 states have (on average 37.0) internal successors, (1776), 48 states have internal predecessors, (1776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:17,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:47:17,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 86 [2023-12-09 14:47:17,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:47:18,827 INFO L124 PetriNetUnfolderBase]: 45/203 cut-off events. [2023-12-09 14:47:18,828 INFO L125 PetriNetUnfolderBase]: For 120/124 co-relation queries the response was YES. [2023-12-09 14:47:18,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 698 conditions, 203 events. 45/203 cut-off events. For 120/124 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 520 event pairs, 1 based on Foata normal form. 2/199 useless extension candidates. Maximal degree in co-relation 548. Up to 90 conditions per place. [2023-12-09 14:47:18,829 INFO L140 encePairwiseOnDemand]: 71/86 looper letters, 65 selfloop transitions, 18 changer transitions 14/122 dead transitions. [2023-12-09 14:47:18,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 122 transitions, 845 flow [2023-12-09 14:47:18,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-09 14:47:18,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-12-09 14:47:18,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 694 transitions. [2023-12-09 14:47:18,836 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4483204134366925 [2023-12-09 14:47:18,836 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 694 transitions. [2023-12-09 14:47:18,836 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 694 transitions. [2023-12-09 14:47:18,836 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:47:18,837 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 694 transitions. [2023-12-09 14:47:18,838 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 38.55555555555556) internal successors, (694), 18 states have internal predecessors, (694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:18,841 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 86.0) internal successors, (1634), 19 states have internal predecessors, (1634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:18,841 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 86.0) internal successors, (1634), 19 states have internal predecessors, (1634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:18,842 INFO L308 CegarLoopForPetriNet]: 74 programPoint places, 52 predicate places. [2023-12-09 14:47:18,843 INFO L500 AbstractCegarLoop]: Abstraction has has 126 places, 122 transitions, 845 flow [2023-12-09 14:47:18,844 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 37.0) internal successors, (1776), 48 states have internal predecessors, (1776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:18,846 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:47:18,846 INFO L233 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:47:18,863 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-09 14:47:19,052 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 [2023-12-09 14:47:19,053 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 14:47:19,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:47:19,053 INFO L85 PathProgramCache]: Analyzing trace with hash -150285676, now seen corresponding path program 3 times [2023-12-09 14:47:19,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:47:19,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156419685] [2023-12-09 14:47:19,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:47:19,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:47:19,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:47:19,722 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:47:19,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:47:19,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156419685] [2023-12-09 14:47:19,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156419685] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 14:47:19,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687591664] [2023-12-09 14:47:19,723 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-09 14:47:19,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 14:47:19,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 14:47:19,724 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) [2023-12-09 14:47:19,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-09 14:47:19,821 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-12-09 14:47:19,821 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 14:47:19,823 INFO L262 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 61 conjunts are in the unsatisfiable core [2023-12-09 14:47:19,830 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 14:47:19,972 INFO L349 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2023-12-09 14:47:19,975 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 33 [2023-12-09 14:47:20,026 INFO L349 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2023-12-09 14:47:20,027 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 25 [2023-12-09 14:47:20,095 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-12-09 14:47:20,201 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-12-09 14:47:20,395 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-12-09 14:47:20,396 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2023-12-09 14:47:20,491 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-12-09 14:47:20,492 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 21 [2023-12-09 14:47:20,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-09 14:47:20,560 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-12-09 14:47:20,560 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 21 [2023-12-09 14:47:20,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-09 14:47:20,629 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-12-09 14:47:20,629 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 21 [2023-12-09 14:47:20,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-09 14:47:20,704 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-12-09 14:47:20,704 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 21 [2023-12-09 14:47:20,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-09 14:47:20,783 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-12-09 14:47:20,783 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 21 [2023-12-09 14:47:20,894 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 18 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:47:20,894 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 14:49:03,982 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_159 Int) (|v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_42| Int) (|v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_41| Int) (v_ArrVal_157 Int) (v_ArrVal_155 Int) (|v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_44| Int) (|v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_43| Int) (v_ArrVal_163 Int) (v_ArrVal_161 Int)) (or (< |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_41| (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_42| 1)) (= (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| (store (store (store (store (store (select |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.offset| 1) v_ArrVal_155) (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_44| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_157) (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_43| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_159) (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_42| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_161) (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_41| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_163)) c_~v~0.base) c_~v~0.offset) 66) (< |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_42| (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_43| 1)) (< |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_43| (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_44| 1)) (< |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_44| (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1| 2)))) is different from false [2023-12-09 14:50:33,159 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-09 14:50:33,159 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 2942 treesize of output 2884 [2023-12-09 14:50:33,192 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16370 treesize of output 16236 [2023-12-09 14:50:33,284 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8792 treesize of output 8754 [2023-12-09 14:50:33,473 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16704 treesize of output 16702 [2023-12-09 14:50:34,009 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 17 proven. 14 refuted. 15 times theorem prover too weak. 0 trivial. 9 not checked. [2023-12-09 14:50:34,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1687591664] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 14:50:34,009 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 14:50:34,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 25, 26] total 64 [2023-12-09 14:50:34,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668084961] [2023-12-09 14:50:34,010 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 14:50:34,010 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2023-12-09 14:50:34,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:50:34,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2023-12-09 14:50:34,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=308, Invalid=3520, Unknown=82, NotChecked=122, Total=4032 [2023-12-09 14:50:34,014 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 86 [2023-12-09 14:50:34,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 122 transitions, 845 flow. Second operand has 64 states, 64 states have (on average 28.9375) internal successors, (1852), 64 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:50:34,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:50:34,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 86 [2023-12-09 14:50:34,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:50:36,976 INFO L124 PetriNetUnfolderBase]: 49/213 cut-off events. [2023-12-09 14:50:36,977 INFO L125 PetriNetUnfolderBase]: For 195/199 co-relation queries the response was YES. [2023-12-09 14:50:36,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 919 conditions, 213 events. 49/213 cut-off events. For 195/199 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 557 event pairs, 1 based on Foata normal form. 3/210 useless extension candidates. Maximal degree in co-relation 736. Up to 102 conditions per place. [2023-12-09 14:50:36,978 INFO L140 encePairwiseOnDemand]: 64/86 looper letters, 0 selfloop transitions, 0 changer transitions 127/127 dead transitions. [2023-12-09 14:50:36,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 127 transitions, 1109 flow [2023-12-09 14:50:36,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-09 14:50:36,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-12-09 14:50:36,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 822 transitions. [2023-12-09 14:50:36,990 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.34136212624584716 [2023-12-09 14:50:36,990 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 822 transitions. [2023-12-09 14:50:36,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 822 transitions. [2023-12-09 14:50:36,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:50:36,990 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 822 transitions. [2023-12-09 14:50:36,992 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 29.357142857142858) internal successors, (822), 28 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:50:36,994 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 86.0) internal successors, (2494), 29 states have internal predecessors, (2494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:50:36,994 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 86.0) internal successors, (2494), 29 states have internal predecessors, (2494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:50:36,995 INFO L308 CegarLoopForPetriNet]: 74 programPoint places, 77 predicate places. [2023-12-09 14:50:36,995 INFO L500 AbstractCegarLoop]: Abstraction has has 151 places, 127 transitions, 1109 flow [2023-12-09 14:50:36,996 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 28.9375) internal successors, (1852), 64 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:50:37,000 INFO L161 wickiGriesTestDumper]: Dumping Owicki-Gries test to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bigshot_s2.i_BEv2_AllErrorsAtOnce [2023-12-09 14:50:37,061 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-12-09 14:50:37,061 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-12-09 14:50:37,062 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-12-09 14:50:37,068 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-09 14:50:37,265 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 14:50:37,266 INFO L457 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2023-12-09 14:50:37,269 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-12-09 14:50:37,269 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-12-09 14:50:37,277 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 02:50:37 BasicIcfg [2023-12-09 14:50:37,277 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-09 14:50:37,278 INFO L158 Benchmark]: Toolchain (without parser) took 208699.17ms. Allocated memory was 181.4MB in the beginning and 438.3MB in the end (delta: 256.9MB). Free memory was 144.9MB in the beginning and 282.8MB in the end (delta: -137.9MB). Peak memory consumption was 119.3MB. Max. memory is 8.0GB. [2023-12-09 14:50:37,278 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 181.4MB. Free memory is still 137.4MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-09 14:50:37,279 INFO L158 Benchmark]: CACSL2BoogieTranslator took 539.47ms. Allocated memory is still 181.4MB. Free memory was 144.7MB in the beginning and 111.8MB in the end (delta: 32.9MB). Peak memory consumption was 33.6MB. Max. memory is 8.0GB. [2023-12-09 14:50:37,279 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.66ms. Allocated memory is still 181.4MB. Free memory was 111.8MB in the beginning and 109.3MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-09 14:50:37,279 INFO L158 Benchmark]: Boogie Preprocessor took 27.51ms. Allocated memory is still 181.4MB. Free memory was 109.3MB in the beginning and 108.0MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-09 14:50:37,279 INFO L158 Benchmark]: RCFGBuilder took 310.86ms. Allocated memory is still 181.4MB. Free memory was 108.0MB in the beginning and 93.6MB in the end (delta: 14.4MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-12-09 14:50:37,280 INFO L158 Benchmark]: TraceAbstraction took 207768.43ms. Allocated memory was 181.4MB in the beginning and 438.3MB in the end (delta: 256.9MB). Free memory was 92.9MB in the beginning and 282.8MB in the end (delta: -189.9MB). Peak memory consumption was 66.8MB. Max. memory is 8.0GB. [2023-12-09 14:50:37,282 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 181.4MB. Free memory is still 137.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 539.47ms. Allocated memory is still 181.4MB. Free memory was 144.7MB in the beginning and 111.8MB in the end (delta: 32.9MB). Peak memory consumption was 33.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 48.66ms. Allocated memory is still 181.4MB. Free memory was 111.8MB in the beginning and 109.3MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 27.51ms. Allocated memory is still 181.4MB. Free memory was 109.3MB in the beginning and 108.0MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 310.86ms. Allocated memory is still 181.4MB. Free memory was 108.0MB in the beginning and 93.6MB in the end (delta: 14.4MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * TraceAbstraction took 207768.43ms. Allocated memory was 181.4MB in the beginning and 438.3MB in the end (delta: 256.9MB). Free memory was 92.9MB in the beginning and 282.8MB in the end (delta: -189.9MB). Peak memory consumption was 66.8MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1107]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 110 locations, 3 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: 207.6s, OverallIterations: 5, TraceHistogramMax: 6, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 5.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1790 SdHoareTripleChecker+Valid, 2.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1790 mSDsluCounter, 958 SdHoareTripleChecker+Invalid, 1.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 366 IncrementalHoareTripleChecker+Unchecked, 874 mSDsCounter, 324 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3460 IncrementalHoareTripleChecker+Invalid, 4150 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 324 mSolverCounterUnsat, 84 mSDtfsCounter, 3460 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 624 GetRequests, 389 SyntacticMatches, 14 SemanticMatches, 221 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 3203 ImplicationChecksByTransitivity, 196.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1109occurred in iteration=5, InterpolantAutomatonStates: 84, 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, 0.3s SatisfiabilityAnalysisTime, 200.5s InterpolantComputationTime, 596 NumberOfCodeBlocks, 596 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 823 ConstructedInterpolants, 140 QuantifiedInterpolants, 13969 SizeOfPredicates, 47 NumberOfNonLiveVariables, 684 ConjunctsInSsa, 144 ConjunctsInUnsatCore, 11 InterpolantComputations, 2 PerfectInterpolantSequences, 35/282 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 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-12-09 14:50:37,388 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...