/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-ticket-2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 14:42:57,018 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 14:42:57,102 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-VariableLbe.epf [2023-08-24 14:42:57,106 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 14:42:57,107 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 14:42:57,137 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 14:42:57,138 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 14:42:57,138 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 14:42:57,139 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 14:42:57,142 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 14:42:57,143 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 14:42:57,143 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 14:42:57,143 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 14:42:57,144 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 14:42:57,144 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 14:42:57,145 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 14:42:57,145 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 14:42:57,145 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 14:42:57,145 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 14:42:57,146 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 14:42:57,146 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 14:42:57,147 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 14:42:57,147 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 14:42:57,147 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 14:42:57,148 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 14:42:57,148 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 14:42:57,148 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 14:42:57,148 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 14:42:57,148 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 14:42:57,149 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 14:42:57,149 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 14:42:57,150 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 14:42:57,150 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 14:42:57,150 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 14:42:57,150 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 14:42:57,150 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-24 14:42:57,475 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 14:42:57,494 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 14:42:57,496 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 14:42:57,497 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 14:42:57,499 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 14:42:57,500 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-ticket-2.wvr.c [2023-08-24 14:42:58,698 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 14:42:58,924 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 14:42:58,925 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-2.wvr.c [2023-08-24 14:42:58,932 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf69c8a1a/01ad32a2847946e69bbc7d65bceedb82/FLAG94bfaab80 [2023-08-24 14:42:58,945 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf69c8a1a/01ad32a2847946e69bbc7d65bceedb82 [2023-08-24 14:42:58,947 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 14:42:58,948 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 14:42:58,949 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 14:42:58,949 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 14:42:58,952 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 14:42:58,952 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 02:42:58" (1/1) ... [2023-08-24 14:42:58,953 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f2efc3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 02:42:58, skipping insertion in model container [2023-08-24 14:42:58,953 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 02:42:58" (1/1) ... [2023-08-24 14:42:58,972 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 14:42:59,111 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-2.wvr.c[2652,2665] [2023-08-24 14:42:59,113 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 14:42:59,127 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 14:42:59,160 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-2.wvr.c[2652,2665] [2023-08-24 14:42:59,161 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 14:42:59,169 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 14:42:59,170 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 14:42:59,175 INFO L206 MainTranslator]: Completed translation [2023-08-24 14:42:59,176 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 02:42:59 WrapperNode [2023-08-24 14:42:59,177 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 14:42:59,178 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 14:42:59,178 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 14:42:59,178 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 14:42:59,184 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 02:42:59" (1/1) ... [2023-08-24 14:42:59,197 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 02:42:59" (1/1) ... [2023-08-24 14:42:59,227 INFO L138 Inliner]: procedures = 21, calls = 40, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 124 [2023-08-24 14:42:59,227 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 14:42:59,228 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 14:42:59,229 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 14:42:59,229 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 14:42:59,236 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 02:42:59" (1/1) ... [2023-08-24 14:42:59,236 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 02:42:59" (1/1) ... [2023-08-24 14:42:59,247 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 02:42:59" (1/1) ... [2023-08-24 14:42:59,248 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 02:42:59" (1/1) ... [2023-08-24 14:42:59,255 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 02:42:59" (1/1) ... [2023-08-24 14:42:59,256 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 02:42:59" (1/1) ... [2023-08-24 14:42:59,257 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 02:42:59" (1/1) ... [2023-08-24 14:42:59,258 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 02:42:59" (1/1) ... [2023-08-24 14:42:59,260 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 14:42:59,261 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 14:42:59,261 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 14:42:59,261 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 14:42:59,262 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 02:42:59" (1/1) ... [2023-08-24 14:42:59,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 14:42:59,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 14:42:59,302 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) [2023-08-24 14:42:59,329 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 [2023-08-24 14:42:59,342 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 14:42:59,342 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-24 14:42:59,343 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-24 14:42:59,343 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-24 14:42:59,343 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-24 14:42:59,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 14:42:59,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 14:42:59,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 14:42:59,343 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-24 14:42:59,343 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-24 14:42:59,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 14:42:59,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 14:42:59,344 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-24 14:42:59,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 14:42:59,345 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-24 14:42:59,445 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 14:42:59,447 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 14:42:59,645 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 14:42:59,689 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 14:42:59,689 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-24 14:42:59,691 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 02:42:59 BoogieIcfgContainer [2023-08-24 14:42:59,691 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 14:42:59,693 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 14:42:59,693 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 14:42:59,696 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 14:42:59,696 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 02:42:58" (1/3) ... [2023-08-24 14:42:59,697 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@586a399a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 02:42:59, skipping insertion in model container [2023-08-24 14:42:59,697 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 02:42:59" (2/3) ... [2023-08-24 14:42:59,698 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@586a399a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 02:42:59, skipping insertion in model container [2023-08-24 14:42:59,698 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 02:42:59" (3/3) ... [2023-08-24 14:42:59,699 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-2.wvr.c [2023-08-24 14:42:59,714 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 14:42:59,714 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-24 14:42:59,714 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 14:42:59,766 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-24 14:42:59,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 95 transitions, 206 flow [2023-08-24 14:42:59,846 INFO L124 PetriNetUnfolderBase]: 2/93 cut-off events. [2023-08-24 14:42:59,846 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-24 14:42:59,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 93 events. 2/93 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 28 event pairs, 0 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 64. Up to 2 conditions per place. [2023-08-24 14:42:59,850 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 95 transitions, 206 flow [2023-08-24 14:42:59,854 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 90 places, 85 transitions, 182 flow [2023-08-24 14:42:59,858 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 14:42:59,868 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 90 places, 85 transitions, 182 flow [2023-08-24 14:42:59,870 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 90 places, 85 transitions, 182 flow [2023-08-24 14:42:59,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 90 places, 85 transitions, 182 flow [2023-08-24 14:42:59,917 INFO L124 PetriNetUnfolderBase]: 2/85 cut-off events. [2023-08-24 14:42:59,918 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-24 14:42:59,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 85 events. 2/85 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 27 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 64. Up to 2 conditions per place. [2023-08-24 14:42:59,919 INFO L119 LiptonReduction]: Number of co-enabled transitions 282 [2023-08-24 14:43:02,578 INFO L134 LiptonReduction]: Checked pairs total: 1334 [2023-08-24 14:43:02,579 INFO L136 LiptonReduction]: Total number of compositions: 74 [2023-08-24 14:43:02,591 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 14:43:02,596 INFO L357 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=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@50742c78, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 14:43:02,597 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-24 14:43:02,601 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 14:43:02,601 INFO L124 PetriNetUnfolderBase]: 0/17 cut-off events. [2023-08-24 14:43:02,602 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-24 14:43:02,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 14:43:02,602 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 14:43:02,603 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 14:43:02,607 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 14:43:02,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1313733496, now seen corresponding path program 1 times [2023-08-24 14:43:02,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 14:43:02,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274048427] [2023-08-24 14:43:02,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 14:43:02,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 14:43:02,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 14:43:03,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 14:43:03,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 14:43:03,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274048427] [2023-08-24 14:43:03,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274048427] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 14:43:03,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 14:43:03,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 14:43:03,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506123177] [2023-08-24 14:43:03,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 14:43:03,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 14:43:03,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 14:43:03,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 14:43:03,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 14:43:03,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 169 [2023-08-24 14:43:03,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 18 transitions, 48 flow. Second operand has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 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) [2023-08-24 14:43:03,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 14:43:03,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 169 [2023-08-24 14:43:03,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 14:43:03,487 INFO L124 PetriNetUnfolderBase]: 97/199 cut-off events. [2023-08-24 14:43:03,488 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2023-08-24 14:43:03,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 425 conditions, 199 events. 97/199 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 625 event pairs, 38 based on Foata normal form. 1/200 useless extension candidates. Maximal degree in co-relation 352. Up to 98 conditions per place. [2023-08-24 14:43:03,491 INFO L140 encePairwiseOnDemand]: 164/169 looper letters, 21 selfloop transitions, 2 changer transitions 13/36 dead transitions. [2023-08-24 14:43:03,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 36 transitions, 165 flow [2023-08-24 14:43:03,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 14:43:03,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 14:43:03,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 402 transitions. [2023-08-24 14:43:03,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4757396449704142 [2023-08-24 14:43:03,504 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 402 transitions. [2023-08-24 14:43:03,504 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 402 transitions. [2023-08-24 14:43:03,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 14:43:03,508 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 402 transitions. [2023-08-24 14:43:03,511 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 80.4) internal successors, (402), 5 states have internal predecessors, (402), 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) [2023-08-24 14:43:03,515 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 169.0) internal successors, (1014), 6 states have internal predecessors, (1014), 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) [2023-08-24 14:43:03,516 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 169.0) internal successors, (1014), 6 states have internal predecessors, (1014), 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) [2023-08-24 14:43:03,517 INFO L175 Difference]: Start difference. First operand has 25 places, 18 transitions, 48 flow. Second operand 5 states and 402 transitions. [2023-08-24 14:43:03,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 36 transitions, 165 flow [2023-08-24 14:43:03,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 36 transitions, 151 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-24 14:43:03,521 INFO L231 Difference]: Finished difference. Result has 28 places, 18 transitions, 52 flow [2023-08-24 14:43:03,523 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=52, PETRI_PLACES=28, PETRI_TRANSITIONS=18} [2023-08-24 14:43:03,526 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 3 predicate places. [2023-08-24 14:43:03,526 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 18 transitions, 52 flow [2023-08-24 14:43:03,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 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) [2023-08-24 14:43:03,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 14:43:03,526 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 14:43:03,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 14:43:03,527 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 14:43:03,527 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 14:43:03,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1644082166, now seen corresponding path program 2 times [2023-08-24 14:43:03,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 14:43:03,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376898085] [2023-08-24 14:43:03,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 14:43:03,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 14:43:03,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 14:43:03,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 14:43:03,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 14:43:03,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376898085] [2023-08-24 14:43:03,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376898085] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 14:43:03,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 14:43:03,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-24 14:43:03,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330134924] [2023-08-24 14:43:03,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 14:43:03,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-24 14:43:03,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 14:43:03,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-24 14:43:03,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-24 14:43:03,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 169 [2023-08-24 14:43:03,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 18 transitions, 52 flow. Second operand has 6 states, 6 states have (on average 75.5) internal successors, (453), 6 states have internal predecessors, (453), 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) [2023-08-24 14:43:03,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 14:43:03,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 169 [2023-08-24 14:43:03,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 14:43:03,730 INFO L124 PetriNetUnfolderBase]: 41/113 cut-off events. [2023-08-24 14:43:03,730 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-24 14:43:03,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 247 conditions, 113 events. 41/113 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 360 event pairs, 8 based on Foata normal form. 4/117 useless extension candidates. Maximal degree in co-relation 238. Up to 44 conditions per place. [2023-08-24 14:43:03,732 INFO L140 encePairwiseOnDemand]: 163/169 looper letters, 25 selfloop transitions, 8 changer transitions 0/36 dead transitions. [2023-08-24 14:43:03,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 36 transitions, 156 flow [2023-08-24 14:43:03,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 14:43:03,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 14:43:03,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 472 transitions. [2023-08-24 14:43:03,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46548323471400394 [2023-08-24 14:43:03,735 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 472 transitions. [2023-08-24 14:43:03,735 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 472 transitions. [2023-08-24 14:43:03,735 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 14:43:03,735 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 472 transitions. [2023-08-24 14:43:03,737 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 78.66666666666667) internal successors, (472), 6 states have internal predecessors, (472), 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) [2023-08-24 14:43:03,739 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 169.0) internal successors, (1183), 7 states have internal predecessors, (1183), 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) [2023-08-24 14:43:03,739 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 169.0) internal successors, (1183), 7 states have internal predecessors, (1183), 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) [2023-08-24 14:43:03,739 INFO L175 Difference]: Start difference. First operand has 28 places, 18 transitions, 52 flow. Second operand 6 states and 472 transitions. [2023-08-24 14:43:03,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 36 transitions, 156 flow [2023-08-24 14:43:03,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 36 transitions, 148 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-08-24 14:43:03,741 INFO L231 Difference]: Finished difference. Result has 30 places, 25 transitions, 92 flow [2023-08-24 14:43:03,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=92, PETRI_PLACES=30, PETRI_TRANSITIONS=25} [2023-08-24 14:43:03,742 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 5 predicate places. [2023-08-24 14:43:03,742 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 25 transitions, 92 flow [2023-08-24 14:43:03,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 75.5) internal successors, (453), 6 states have internal predecessors, (453), 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) [2023-08-24 14:43:03,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 14:43:03,743 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 14:43:03,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 14:43:03,743 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 14:43:03,744 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 14:43:03,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1318093466, now seen corresponding path program 3 times [2023-08-24 14:43:03,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 14:43:03,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403269526] [2023-08-24 14:43:03,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 14:43:03,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 14:43:03,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 14:43:03,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 14:43:03,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 14:43:03,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403269526] [2023-08-24 14:43:03,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403269526] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 14:43:03,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 14:43:03,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 14:43:03,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477367398] [2023-08-24 14:43:03,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 14:43:03,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 14:43:03,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 14:43:03,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 14:43:03,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-24 14:43:03,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 169 [2023-08-24 14:43:03,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 25 transitions, 92 flow. Second operand has 5 states, 5 states have (on average 76.6) internal successors, (383), 5 states have internal predecessors, (383), 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) [2023-08-24 14:43:03,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 14:43:03,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 169 [2023-08-24 14:43:03,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 14:43:03,958 INFO L124 PetriNetUnfolderBase]: 79/173 cut-off events. [2023-08-24 14:43:03,959 INFO L125 PetriNetUnfolderBase]: For 55/55 co-relation queries the response was YES. [2023-08-24 14:43:03,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 469 conditions, 173 events. 79/173 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 533 event pairs, 39 based on Foata normal form. 1/174 useless extension candidates. Maximal degree in co-relation 216. Up to 98 conditions per place. [2023-08-24 14:43:03,960 INFO L140 encePairwiseOnDemand]: 164/169 looper letters, 20 selfloop transitions, 3 changer transitions 21/44 dead transitions. [2023-08-24 14:43:03,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 44 transitions, 242 flow [2023-08-24 14:43:03,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 14:43:03,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 14:43:03,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 401 transitions. [2023-08-24 14:43:03,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47455621301775147 [2023-08-24 14:43:03,962 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 401 transitions. [2023-08-24 14:43:03,962 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 401 transitions. [2023-08-24 14:43:03,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 14:43:03,962 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 401 transitions. [2023-08-24 14:43:03,963 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 80.2) internal successors, (401), 5 states have internal predecessors, (401), 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) [2023-08-24 14:43:03,965 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 169.0) internal successors, (1014), 6 states have internal predecessors, (1014), 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) [2023-08-24 14:43:03,965 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 169.0) internal successors, (1014), 6 states have internal predecessors, (1014), 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) [2023-08-24 14:43:03,965 INFO L175 Difference]: Start difference. First operand has 30 places, 25 transitions, 92 flow. Second operand 5 states and 401 transitions. [2023-08-24 14:43:03,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 44 transitions, 242 flow [2023-08-24 14:43:03,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 44 transitions, 242 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-24 14:43:03,967 INFO L231 Difference]: Finished difference. Result has 36 places, 20 transitions, 81 flow [2023-08-24 14:43:03,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=81, PETRI_PLACES=36, PETRI_TRANSITIONS=20} [2023-08-24 14:43:03,968 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 11 predicate places. [2023-08-24 14:43:03,968 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 20 transitions, 81 flow [2023-08-24 14:43:03,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 76.6) internal successors, (383), 5 states have internal predecessors, (383), 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) [2023-08-24 14:43:03,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 14:43:03,969 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 14:43:03,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-24 14:43:03,970 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 14:43:03,970 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 14:43:03,970 INFO L85 PathProgramCache]: Analyzing trace with hash -948055508, now seen corresponding path program 4 times [2023-08-24 14:43:03,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 14:43:03,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125017404] [2023-08-24 14:43:03,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 14:43:03,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 14:43:03,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 14:43:04,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 14:43:04,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 14:43:04,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125017404] [2023-08-24 14:43:04,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125017404] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 14:43:04,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 14:43:04,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 14:43:04,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493011030] [2023-08-24 14:43:04,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 14:43:04,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 14:43:04,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 14:43:04,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 14:43:04,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-24 14:43:04,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 169 [2023-08-24 14:43:04,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 20 transitions, 81 flow. Second operand has 5 states, 5 states have (on average 76.0) internal successors, (380), 5 states have internal predecessors, (380), 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) [2023-08-24 14:43:04,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 14:43:04,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 169 [2023-08-24 14:43:04,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 14:43:04,131 INFO L124 PetriNetUnfolderBase]: 6/19 cut-off events. [2023-08-24 14:43:04,131 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-24 14:43:04,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64 conditions, 19 events. 6/19 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 23 event pairs, 0 based on Foata normal form. 4/23 useless extension candidates. Maximal degree in co-relation 54. Up to 8 conditions per place. [2023-08-24 14:43:04,132 INFO L140 encePairwiseOnDemand]: 165/169 looper letters, 0 selfloop transitions, 0 changer transitions 11/11 dead transitions. [2023-08-24 14:43:04,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 11 transitions, 62 flow [2023-08-24 14:43:04,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 14:43:04,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 14:43:04,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 377 transitions. [2023-08-24 14:43:04,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4461538461538462 [2023-08-24 14:43:04,134 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 377 transitions. [2023-08-24 14:43:04,134 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 377 transitions. [2023-08-24 14:43:04,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 14:43:04,134 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 377 transitions. [2023-08-24 14:43:04,135 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 75.4) internal successors, (377), 5 states have internal predecessors, (377), 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) [2023-08-24 14:43:04,137 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 169.0) internal successors, (1014), 6 states have internal predecessors, (1014), 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) [2023-08-24 14:43:04,137 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 169.0) internal successors, (1014), 6 states have internal predecessors, (1014), 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) [2023-08-24 14:43:04,137 INFO L175 Difference]: Start difference. First operand has 36 places, 20 transitions, 81 flow. Second operand 5 states and 377 transitions. [2023-08-24 14:43:04,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 11 transitions, 62 flow [2023-08-24 14:43:04,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 11 transitions, 52 flow, removed 2 selfloop flow, removed 6 redundant places. [2023-08-24 14:43:04,138 INFO L231 Difference]: Finished difference. Result has 20 places, 0 transitions, 0 flow [2023-08-24 14:43:04,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=24, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=20, PETRI_TRANSITIONS=0} [2023-08-24 14:43:04,139 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, -5 predicate places. [2023-08-24 14:43:04,139 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 0 transitions, 0 flow [2023-08-24 14:43:04,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 76.0) internal successors, (380), 5 states have internal predecessors, (380), 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) [2023-08-24 14:43:04,142 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-24 14:43:04,142 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-24 14:43:04,142 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-24 14:43:04,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-24 14:43:04,143 INFO L445 BasicCegarLoop]: Path program histogram: [4] [2023-08-24 14:43:04,145 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-24 14:43:04,145 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-24 14:43:04,148 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.08 02:43:04 BasicIcfg [2023-08-24 14:43:04,149 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-24 14:43:04,149 INFO L158 Benchmark]: Toolchain (without parser) took 5201.15ms. Allocated memory was 396.4MB in the beginning and 507.5MB in the end (delta: 111.1MB). Free memory was 372.6MB in the beginning and 256.5MB in the end (delta: 116.1MB). Peak memory consumption was 228.6MB. Max. memory is 16.0GB. [2023-08-24 14:43:04,150 INFO L158 Benchmark]: CDTParser took 0.45ms. Allocated memory is still 396.4MB. Free memory is still 372.6MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 14:43:04,150 INFO L158 Benchmark]: CACSL2BoogieTranslator took 227.87ms. Allocated memory is still 396.4MB. Free memory was 372.1MB in the beginning and 361.3MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-08-24 14:43:04,150 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.05ms. Allocated memory is still 396.4MB. Free memory was 361.3MB in the beginning and 359.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 14:43:04,150 INFO L158 Benchmark]: Boogie Preprocessor took 31.87ms. Allocated memory is still 396.4MB. Free memory was 359.3MB in the beginning and 358.2MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 14:43:04,151 INFO L158 Benchmark]: RCFGBuilder took 430.40ms. Allocated memory is still 396.4MB. Free memory was 358.2MB in the beginning and 341.0MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2023-08-24 14:43:04,151 INFO L158 Benchmark]: TraceAbstraction took 4455.44ms. Allocated memory was 396.4MB in the beginning and 507.5MB in the end (delta: 111.1MB). Free memory was 340.5MB in the beginning and 256.5MB in the end (delta: 84.0MB). Peak memory consumption was 197.1MB. Max. memory is 16.0GB. [2023-08-24 14:43:04,153 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45ms. Allocated memory is still 396.4MB. Free memory is still 372.6MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 227.87ms. Allocated memory is still 396.4MB. Free memory was 372.1MB in the beginning and 361.3MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 50.05ms. Allocated memory is still 396.4MB. Free memory was 361.3MB in the beginning and 359.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 31.87ms. Allocated memory is still 396.4MB. Free memory was 359.3MB in the beginning and 358.2MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 430.40ms. Allocated memory is still 396.4MB. Free memory was 358.2MB in the beginning and 341.0MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 4455.44ms. Allocated memory was 396.4MB in the beginning and 507.5MB in the end (delta: 111.1MB). Free memory was 340.5MB in the beginning and 256.5MB in the end (delta: 84.0MB). Peak memory consumption was 197.1MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.7s, 90 PlacesBefore, 25 PlacesAfterwards, 85 TransitionsBefore, 18 TransitionsAfterwards, 282 CoEnabledTransitionPairs, 7 FixpointIterations, 55 TrivialSequentialCompositions, 11 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 0 ConcurrentYvCompositions, 2 ChoiceCompositions, 74 TotalNumberOfCompositions, 1334 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 772, independent: 648, independent conditional: 0, independent unconditional: 648, dependent: 124, dependent conditional: 0, dependent unconditional: 124, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 144, independent: 136, independent conditional: 0, independent unconditional: 136, dependent: 8, dependent conditional: 0, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 772, independent: 512, independent conditional: 0, independent unconditional: 512, dependent: 116, dependent conditional: 0, dependent unconditional: 116, unknown: 144, unknown conditional: 0, unknown unconditional: 144] , Statistics on independence cache: Total cache size (in pairs): 39, Positive cache size: 33, Positive conditional cache size: 0, Positive unconditional cache size: 33, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 102]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 111 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: 4.4s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 36 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 36 mSDsluCounter, 11 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 238 IncrementalHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 6 mSDtfsCounter, 238 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=92occurred in iteration=2, InterpolantAutomatonStates: 21, 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: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 72 NumberOfCodeBlocks, 72 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 68 ConstructedInterpolants, 0 QuantifiedInterpolants, 329 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 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! [2023-08-24 14:43:04,171 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...