/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 -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf --rcfgbuilder.only.consider.context.switches.at.boundaries.of.atomic.blocks true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-min-max-1.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 12:06:04,722 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 12:06:04,792 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-SemanticLbe.epf [2023-11-17 12:06:04,835 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 12:06:04,836 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 12:06:04,836 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 12:06:04,837 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 12:06:04,837 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 12:06:04,838 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 12:06:04,838 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 12:06:04,838 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 12:06:04,839 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 12:06:04,839 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 12:06:04,839 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 12:06:04,840 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 12:06:04,840 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 12:06:04,841 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 12:06:04,841 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 12:06:04,841 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 12:06:04,842 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 12:06:04,842 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 12:06:04,845 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 12:06:04,845 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 12:06:04,846 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 12:06:04,846 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 12:06:04,846 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 12:06:04,847 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 12:06:04,847 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 12:06:04,847 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 12:06:04,847 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 12:06:04,848 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 12:06:04,848 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 12:06:04,848 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Only consider context switches at boundaries of atomic blocks -> true [2023-11-17 12:06:05,137 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 12:06:05,159 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 12:06:05,161 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 12:06:05,162 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 12:06:05,163 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 12:06:05,164 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-min-max-1.wvr.c [2023-11-17 12:06:06,509 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 12:06:06,761 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 12:06:06,762 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-min-max-1.wvr.c [2023-11-17 12:06:06,770 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a6430b9b/c2efa3a5bad9450787837c32b1086036/FLAGe19e38af5 [2023-11-17 12:06:06,790 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a6430b9b/c2efa3a5bad9450787837c32b1086036 [2023-11-17 12:06:06,793 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 12:06:06,796 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 12:06:06,800 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 12:06:06,801 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 12:06:06,805 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 12:06:06,806 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 12:06:06" (1/1) ... [2023-11-17 12:06:06,807 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ed84465 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:06:06, skipping insertion in model container [2023-11-17 12:06:06,807 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 12:06:06" (1/1) ... [2023-11-17 12:06:06,839 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 12:06:07,033 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-min-max-1.wvr.c[3096,3109] [2023-11-17 12:06:07,042 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 12:06:07,050 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 12:06:07,074 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-min-max-1.wvr.c[3096,3109] [2023-11-17 12:06:07,078 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 12:06:07,086 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 12:06:07,086 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 12:06:07,093 INFO L206 MainTranslator]: Completed translation [2023-11-17 12:06:07,093 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:06:07 WrapperNode [2023-11-17 12:06:07,093 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 12:06:07,095 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 12:06:07,095 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 12:06:07,095 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 12:06:07,101 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:06:07" (1/1) ... [2023-11-17 12:06:07,109 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:06:07" (1/1) ... [2023-11-17 12:06:07,130 INFO L138 Inliner]: procedures = 25, calls = 53, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 129 [2023-11-17 12:06:07,130 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 12:06:07,131 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 12:06:07,131 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 12:06:07,131 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 12:06:07,147 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:06:07" (1/1) ... [2023-11-17 12:06:07,147 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:06:07" (1/1) ... [2023-11-17 12:06:07,150 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:06:07" (1/1) ... [2023-11-17 12:06:07,151 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:06:07" (1/1) ... [2023-11-17 12:06:07,160 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:06:07" (1/1) ... [2023-11-17 12:06:07,176 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:06:07" (1/1) ... [2023-11-17 12:06:07,178 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:06:07" (1/1) ... [2023-11-17 12:06:07,179 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:06:07" (1/1) ... [2023-11-17 12:06:07,193 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 12:06:07,194 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 12:06:07,194 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 12:06:07,195 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 12:06:07,195 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:06:07" (1/1) ... [2023-11-17 12:06:07,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 12:06:07,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:06:07,223 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) [2023-11-17 12:06:07,228 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-17 12:06:07,258 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 12:06:07,258 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 12:06:07,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 12:06:07,259 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 12:06:07,259 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-17 12:06:07,260 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-17 12:06:07,260 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-17 12:06:07,260 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-17 12:06:07,260 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-17 12:06:07,260 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-17 12:06:07,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 12:06:07,260 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-17 12:06:07,261 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-17 12:06:07,261 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-17 12:06:07,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 12:06:07,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 12:06:07,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 12:06:07,263 WARN L211 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-17 12:06:07,362 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 12:06:07,364 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 12:06:07,692 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 12:06:07,956 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 12:06:07,956 INFO L307 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-17 12:06:07,957 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 12:06:07 BoogieIcfgContainer [2023-11-17 12:06:07,957 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 12:06:07,960 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 12:06:07,960 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 12:06:07,963 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 12:06:07,963 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 12:06:06" (1/3) ... [2023-11-17 12:06:07,964 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5994b71e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 12:06:07, skipping insertion in model container [2023-11-17 12:06:07,964 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:06:07" (2/3) ... [2023-11-17 12:06:07,965 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5994b71e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 12:06:07, skipping insertion in model container [2023-11-17 12:06:07,965 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 12:06:07" (3/3) ... [2023-11-17 12:06:07,966 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-min-max-1.wvr.c [2023-11-17 12:06:07,983 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 12:06:07,983 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 12:06:07,984 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 12:06:08,049 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-17 12:06:08,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 46 places, 39 transitions, 99 flow [2023-11-17 12:06:08,119 INFO L124 PetriNetUnfolderBase]: 3/36 cut-off events. [2023-11-17 12:06:08,120 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 12:06:08,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 36 events. 3/36 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 57 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 28. Up to 2 conditions per place. [2023-11-17 12:06:08,128 INFO L82 GeneralOperation]: Start removeDead. Operand has 46 places, 39 transitions, 99 flow [2023-11-17 12:06:08,132 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 35 transitions, 88 flow [2023-11-17 12:06:08,136 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 12:06:08,157 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 42 places, 35 transitions, 88 flow [2023-11-17 12:06:08,162 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 42 places, 35 transitions, 88 flow [2023-11-17 12:06:08,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 42 places, 35 transitions, 88 flow [2023-11-17 12:06:08,187 INFO L124 PetriNetUnfolderBase]: 3/35 cut-off events. [2023-11-17 12:06:08,187 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 12:06:08,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 35 events. 3/35 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 56 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 28. Up to 2 conditions per place. [2023-11-17 12:06:08,189 INFO L119 LiptonReduction]: Number of co-enabled transitions 414 [2023-11-17 12:06:08,939 INFO L134 LiptonReduction]: Checked pairs total: 615 [2023-11-17 12:06:08,939 INFO L136 LiptonReduction]: Total number of compositions: 11 [2023-11-17 12:06:08,963 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 12:06:08,973 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=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;@20a94190, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 12:06:08,974 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-17 12:06:08,983 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 12:06:08,984 INFO L124 PetriNetUnfolderBase]: 3/23 cut-off events. [2023-11-17 12:06:08,984 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 12:06:08,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:06:08,985 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:06:08,985 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 12:06:08,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:06:08,991 INFO L85 PathProgramCache]: Analyzing trace with hash 820644026, now seen corresponding path program 1 times [2023-11-17 12:06:08,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:06:08,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533120670] [2023-11-17 12:06:08,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:06:08,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:06:09,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:06:09,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:06:09,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:06:09,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533120670] [2023-11-17 12:06:09,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533120670] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:06:09,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:06:09,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 12:06:09,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781931585] [2023-11-17 12:06:09,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:06:09,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 12:06:09,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:06:09,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 12:06:09,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 12:06:09,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 50 [2023-11-17 12:06:09,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 66 flow. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:06:09,489 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:06:09,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 50 [2023-11-17 12:06:09,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:06:09,684 INFO L124 PetriNetUnfolderBase]: 282/438 cut-off events. [2023-11-17 12:06:09,684 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2023-11-17 12:06:09,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 944 conditions, 438 events. 282/438 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1324 event pairs, 173 based on Foata normal form. 0/377 useless extension candidates. Maximal degree in co-relation 800. Up to 356 conditions per place. [2023-11-17 12:06:09,695 INFO L140 encePairwiseOnDemand]: 46/50 looper letters, 32 selfloop transitions, 3 changer transitions 0/35 dead transitions. [2023-11-17 12:06:09,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 35 transitions, 164 flow [2023-11-17 12:06:09,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 12:06:09,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 12:06:09,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 80 transitions. [2023-11-17 12:06:09,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2023-11-17 12:06:09,709 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 80 transitions. [2023-11-17 12:06:09,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 80 transitions. [2023-11-17 12:06:09,710 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:06:09,712 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 80 transitions. [2023-11-17 12:06:09,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:06:09,721 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 50.0) internal successors, (250), 5 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:06:09,721 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 50.0) internal successors, (250), 5 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:06:09,723 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 66 flow. Second operand 4 states and 80 transitions. [2023-11-17 12:06:09,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 35 transitions, 164 flow [2023-11-17 12:06:09,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 35 transitions, 148 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-17 12:06:09,733 INFO L231 Difference]: Finished difference. Result has 29 places, 25 transitions, 68 flow [2023-11-17 12:06:09,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=68, PETRI_PLACES=29, PETRI_TRANSITIONS=25} [2023-11-17 12:06:09,738 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, -2 predicate places. [2023-11-17 12:06:09,739 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 25 transitions, 68 flow [2023-11-17 12:06:09,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:06:09,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:06:09,740 INFO L208 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] [2023-11-17 12:06:09,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 12:06:09,741 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 12:06:09,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:06:09,742 INFO L85 PathProgramCache]: Analyzing trace with hash -177429338, now seen corresponding path program 1 times [2023-11-17 12:06:09,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:06:09,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601537492] [2023-11-17 12:06:09,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:06:09,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:06:09,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:06:09,934 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:06:09,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:06:09,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601537492] [2023-11-17 12:06:09,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601537492] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:06:09,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:06:09,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 12:06:09,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628889344] [2023-11-17 12:06:09,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:06:09,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 12:06:09,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:06:09,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 12:06:09,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 12:06:09,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 50 [2023-11-17 12:06:09,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 25 transitions, 68 flow. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:06:09,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:06:09,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 50 [2023-11-17 12:06:09,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:06:10,084 INFO L124 PetriNetUnfolderBase]: 344/532 cut-off events. [2023-11-17 12:06:10,085 INFO L125 PetriNetUnfolderBase]: For 129/129 co-relation queries the response was YES. [2023-11-17 12:06:10,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1270 conditions, 532 events. 344/532 cut-off events. For 129/129 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1684 event pairs, 221 based on Foata normal form. 0/465 useless extension candidates. Maximal degree in co-relation 397. Up to 438 conditions per place. [2023-11-17 12:06:10,090 INFO L140 encePairwiseOnDemand]: 46/50 looper letters, 34 selfloop transitions, 3 changer transitions 0/37 dead transitions. [2023-11-17 12:06:10,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 37 transitions, 178 flow [2023-11-17 12:06:10,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 12:06:10,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 12:06:10,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 80 transitions. [2023-11-17 12:06:10,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2023-11-17 12:06:10,096 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 80 transitions. [2023-11-17 12:06:10,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 80 transitions. [2023-11-17 12:06:10,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:06:10,097 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 80 transitions. [2023-11-17 12:06:10,099 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:06:10,100 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 50.0) internal successors, (250), 5 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:06:10,101 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 50.0) internal successors, (250), 5 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:06:10,101 INFO L175 Difference]: Start difference. First operand has 29 places, 25 transitions, 68 flow. Second operand 4 states and 80 transitions. [2023-11-17 12:06:10,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 37 transitions, 178 flow [2023-11-17 12:06:10,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 37 transitions, 168 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-17 12:06:10,103 INFO L231 Difference]: Finished difference. Result has 31 places, 26 transitions, 76 flow [2023-11-17 12:06:10,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=76, PETRI_PLACES=31, PETRI_TRANSITIONS=26} [2023-11-17 12:06:10,106 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 0 predicate places. [2023-11-17 12:06:10,107 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 26 transitions, 76 flow [2023-11-17 12:06:10,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:06:10,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:06:10,107 INFO L208 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] [2023-11-17 12:06:10,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 12:06:10,108 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 12:06:10,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:06:10,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1417750206, now seen corresponding path program 1 times [2023-11-17 12:06:10,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:06:10,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690952878] [2023-11-17 12:06:10,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:06:10,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:06:10,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:06:10,278 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 12:06:10,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:06:10,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690952878] [2023-11-17 12:06:10,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690952878] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:06:10,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:06:10,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 12:06:10,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907622185] [2023-11-17 12:06:10,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:06:10,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 12:06:10,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:06:10,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 12:06:10,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 12:06:10,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2023-11-17 12:06:10,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 26 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:06:10,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:06:10,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2023-11-17 12:06:10,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:06:10,385 INFO L124 PetriNetUnfolderBase]: 344/533 cut-off events. [2023-11-17 12:06:10,385 INFO L125 PetriNetUnfolderBase]: For 190/190 co-relation queries the response was YES. [2023-11-17 12:06:10,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1365 conditions, 533 events. 344/533 cut-off events. For 190/190 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1619 event pairs, 277 based on Foata normal form. 0/466 useless extension candidates. Maximal degree in co-relation 594. Up to 533 conditions per place. [2023-11-17 12:06:10,390 INFO L140 encePairwiseOnDemand]: 47/50 looper letters, 25 selfloop transitions, 2 changer transitions 0/27 dead transitions. [2023-11-17 12:06:10,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 27 transitions, 132 flow [2023-11-17 12:06:10,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 12:06:10,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 12:06:10,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 68 transitions. [2023-11-17 12:06:10,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4533333333333333 [2023-11-17 12:06:10,392 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 68 transitions. [2023-11-17 12:06:10,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 68 transitions. [2023-11-17 12:06:10,393 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:06:10,393 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 68 transitions. [2023-11-17 12:06:10,394 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:06:10,394 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:06:10,395 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:06:10,395 INFO L175 Difference]: Start difference. First operand has 31 places, 26 transitions, 76 flow. Second operand 3 states and 68 transitions. [2023-11-17 12:06:10,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 27 transitions, 132 flow [2023-11-17 12:06:10,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 27 transitions, 126 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-17 12:06:10,397 INFO L231 Difference]: Finished difference. Result has 32 places, 27 transitions, 82 flow [2023-11-17 12:06:10,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=82, PETRI_PLACES=32, PETRI_TRANSITIONS=27} [2023-11-17 12:06:10,399 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 1 predicate places. [2023-11-17 12:06:10,400 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 27 transitions, 82 flow [2023-11-17 12:06:10,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:06:10,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:06:10,400 INFO L208 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] [2023-11-17 12:06:10,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 12:06:10,401 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 12:06:10,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:06:10,402 INFO L85 PathProgramCache]: Analyzing trace with hash -445527061, now seen corresponding path program 1 times [2023-11-17 12:06:10,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:06:10,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172734467] [2023-11-17 12:06:10,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:06:10,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:06:10,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:06:10,993 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:06:10,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:06:10,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172734467] [2023-11-17 12:06:10,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172734467] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:06:10,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097583993] [2023-11-17 12:06:10,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:06:10,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:06:10,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:06:11,001 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 12:06:11,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-17 12:06:11,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:06:11,158 INFO L262 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-17 12:06:11,166 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:06:11,277 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-17 12:06:11,317 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-17 12:06:11,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 12:06:11,389 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 [2023-11-17 12:06:11,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 12:06:11,464 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 [2023-11-17 12:06:11,489 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 [2023-11-17 12:06:11,533 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:06:11,533 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:06:11,656 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_78 (Array Int Int))) (< c_~min~0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_78) c_~A~0.base) c_~A~0.offset) 1))) is different from false [2023-11-17 12:06:11,879 WARN L854 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_77 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_77))) (or (< (select (select .cse0 c_~A~0.base) c_~A~0.offset) (+ c_~min~0 1)) (forall ((v_ArrVal_78 (Array Int Int))) (< c_~min~0 (+ (select (select (store .cse0 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_78) c_~A~0.base) c_~A~0.offset) 1)))))) (forall ((v_ArrVal_77 (Array Int Int))) (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_77))) (let ((.cse1 (select (select .cse2 c_~A~0.base) c_~A~0.offset))) (or (forall ((v_ArrVal_78 (Array Int Int))) (< .cse1 (+ (select (select (store .cse2 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_78) c_~A~0.base) c_~A~0.offset) 1))) (< c_~min~0 .cse1)))))) is different from false [2023-11-17 12:06:11,911 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (select (select |c_#memory_int| c_~A~0.base) c_~A~0.offset))) (and (forall ((v_ArrVal_77 (Array Int Int))) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_77))) (let ((.cse0 (select (select .cse1 c_~A~0.base) c_~A~0.offset))) (or (forall ((v_ArrVal_78 (Array Int Int))) (< .cse0 (+ (select (select (store .cse1 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_78) c_~A~0.base) c_~A~0.offset) 1))) (< .cse2 .cse0))))) (forall ((v_ArrVal_77 (Array Int Int))) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_77))) (or (< (select (select .cse3 c_~A~0.base) c_~A~0.offset) (+ .cse2 1)) (forall ((v_ArrVal_78 (Array Int Int))) (< .cse2 (+ (select (select (store .cse3 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_78) c_~A~0.base) c_~A~0.offset) 1)))))))) is different from false [2023-11-17 12:06:11,959 WARN L854 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_77 (Array Int Int)) (v_ArrVal_76 (Array Int Int))) (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_76))) (let ((.cse1 (store .cse2 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_77))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (forall ((v_ArrVal_78 (Array Int Int))) (< .cse0 (+ (select (select (store .cse1 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_78) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) 1))) (< (select (select .cse2 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) .cse0)))))) (forall ((v_ArrVal_77 (Array Int Int)) (v_ArrVal_76 (Array Int Int))) (let ((.cse5 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_76))) (let ((.cse4 (store .cse5 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_77)) (.cse3 (select (select .cse5 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (forall ((v_ArrVal_78 (Array Int Int))) (< .cse3 (+ (select (select (store .cse4 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_78) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) 1))) (< (select (select .cse4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) (+ .cse3 1))))))) is different from false [2023-11-17 12:06:11,976 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 12:06:11,977 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 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 96 treesize of output 60 [2023-11-17 12:06:11,988 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 5059 treesize of output 4515 [2023-11-17 12:06:12,007 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 58 treesize of output 50 [2023-11-17 12:06:12,014 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 [2023-11-17 12:06:12,020 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 63 treesize of output 55 [2023-11-17 12:06:12,051 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 12:06:12,051 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 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 97 treesize of output 61 [2023-11-17 12:06:12,059 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 664 treesize of output 608 [2023-11-17 12:06:12,069 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 115 treesize of output 107 [2023-11-17 12:06:12,076 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 80 treesize of output 72 [2023-11-17 12:06:12,083 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 51 treesize of output 47 [2023-11-17 12:06:12,121 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2023-11-17 12:06:12,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1097583993] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 12:06:12,121 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 12:06:12,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 10] total 26 [2023-11-17 12:06:12,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810097123] [2023-11-17 12:06:12,122 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 12:06:12,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-17 12:06:12,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:06:12,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-17 12:06:12,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=456, Unknown=5, NotChecked=188, Total=756 [2023-11-17 12:06:12,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 50 [2023-11-17 12:06:12,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 27 transitions, 82 flow. Second operand has 28 states, 28 states have (on average 13.428571428571429) internal successors, (376), 28 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:06:12,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:06:12,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 50 [2023-11-17 12:06:12,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:06:12,795 INFO L124 PetriNetUnfolderBase]: 500/777 cut-off events. [2023-11-17 12:06:12,796 INFO L125 PetriNetUnfolderBase]: For 163/163 co-relation queries the response was YES. [2023-11-17 12:06:12,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1918 conditions, 777 events. 500/777 cut-off events. For 163/163 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2827 event pairs, 119 based on Foata normal form. 2/664 useless extension candidates. Maximal degree in co-relation 1905. Up to 238 conditions per place. [2023-11-17 12:06:12,799 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 0 selfloop transitions, 0 changer transitions 88/88 dead transitions. [2023-11-17 12:06:12,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 88 transitions, 435 flow [2023-11-17 12:06:12,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-17 12:06:12,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-17 12:06:12,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 194 transitions. [2023-11-17 12:06:12,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.388 [2023-11-17 12:06:12,804 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 194 transitions. [2023-11-17 12:06:12,804 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 194 transitions. [2023-11-17 12:06:12,804 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:06:12,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 194 transitions. [2023-11-17 12:06:12,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 19.4) internal successors, (194), 10 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:06:12,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 50.0) internal successors, (550), 11 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:06:12,813 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 50.0) internal successors, (550), 11 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:06:12,816 INFO L175 Difference]: Start difference. First operand has 32 places, 27 transitions, 82 flow. Second operand 10 states and 194 transitions. [2023-11-17 12:06:12,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 88 transitions, 435 flow [2023-11-17 12:06:12,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 88 transitions, 431 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-17 12:06:12,818 INFO L231 Difference]: Finished difference. Result has 39 places, 0 transitions, 0 flow [2023-11-17 12:06:12,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=0, PETRI_PLACES=39, PETRI_TRANSITIONS=0} [2023-11-17 12:06:12,819 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 8 predicate places. [2023-11-17 12:06:12,819 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 0 transitions, 0 flow [2023-11-17 12:06:12,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 13.428571428571429) internal successors, (376), 28 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:06:12,822 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-11-17 12:06:12,823 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-11-17 12:06:12,823 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-17 12:06:12,823 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-11-17 12:06:12,831 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-17 12:06:13,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:06:13,032 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-17 12:06:13,035 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 12:06:13,036 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 12:06:13,039 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 12:06:13 BasicIcfg [2023-11-17 12:06:13,039 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 12:06:13,040 INFO L158 Benchmark]: Toolchain (without parser) took 6244.12ms. Allocated memory was 195.0MB in the beginning and 294.6MB in the end (delta: 99.6MB). Free memory was 149.4MB in the beginning and 192.3MB in the end (delta: -42.9MB). Peak memory consumption was 57.4MB. Max. memory is 8.0GB. [2023-11-17 12:06:13,040 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 195.0MB. Free memory was 153.4MB in the beginning and 153.3MB in the end (delta: 146.9kB). There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 12:06:13,040 INFO L158 Benchmark]: CACSL2BoogieTranslator took 293.50ms. Allocated memory is still 195.0MB. Free memory was 149.1MB in the beginning and 137.1MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-11-17 12:06:13,041 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.68ms. Allocated memory is still 195.0MB. Free memory was 137.1MB in the beginning and 135.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 12:06:13,041 INFO L158 Benchmark]: Boogie Preprocessor took 62.74ms. Allocated memory is still 195.0MB. Free memory was 135.0MB in the beginning and 133.4MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-11-17 12:06:13,041 INFO L158 Benchmark]: RCFGBuilder took 763.22ms. Allocated memory was 195.0MB in the beginning and 237.0MB in the end (delta: 41.9MB). Free memory was 133.2MB in the beginning and 174.4MB in the end (delta: -41.2MB). Peak memory consumption was 20.1MB. Max. memory is 8.0GB. [2023-11-17 12:06:13,042 INFO L158 Benchmark]: TraceAbstraction took 5079.06ms. Allocated memory was 237.0MB in the beginning and 294.6MB in the end (delta: 57.7MB). Free memory was 173.8MB in the beginning and 192.3MB in the end (delta: -18.5MB). Peak memory consumption was 39.4MB. Max. memory is 8.0GB. [2023-11-17 12:06:13,043 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 195.0MB. Free memory was 153.4MB in the beginning and 153.3MB in the end (delta: 146.9kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 293.50ms. Allocated memory is still 195.0MB. Free memory was 149.1MB in the beginning and 137.1MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 35.68ms. Allocated memory is still 195.0MB. Free memory was 137.1MB in the beginning and 135.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 62.74ms. Allocated memory is still 195.0MB. Free memory was 135.0MB in the beginning and 133.4MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 763.22ms. Allocated memory was 195.0MB in the beginning and 237.0MB in the end (delta: 41.9MB). Free memory was 133.2MB in the beginning and 174.4MB in the end (delta: -41.2MB). Peak memory consumption was 20.1MB. Max. memory is 8.0GB. * TraceAbstraction took 5079.06ms. Allocated memory was 237.0MB in the beginning and 294.6MB in the end (delta: 57.7MB). Free memory was 173.8MB in the beginning and 192.3MB in the end (delta: -18.5MB). Peak memory consumption was 39.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.8s, 42 PlacesBefore, 31 PlacesAfterwards, 35 TransitionsBefore, 24 TransitionsAfterwards, 414 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 10 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 11 TotalNumberOfCompositions, 615 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 450, independent: 430, independent conditional: 0, independent unconditional: 430, dependent: 20, dependent conditional: 0, dependent unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 281, independent: 261, independent conditional: 0, independent unconditional: 261, dependent: 20, dependent conditional: 0, dependent unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 281, independent: 261, independent conditional: 0, independent unconditional: 261, dependent: 20, dependent conditional: 0, dependent unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 20, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 20, dependent conditional: 0, dependent unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 102, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 102, dependent conditional: 0, dependent unconditional: 102, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 450, independent: 169, independent conditional: 0, independent unconditional: 169, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 281, unknown conditional: 0, unknown unconditional: 281] , Statistics on independence cache: Total cache size (in pairs): 57, Positive cache size: 50, Positive conditional cache size: 0, Positive unconditional cache size: 50, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 115]: 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 7 procedures, 60 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.9s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 220 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 220 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 317 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 16 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 529 IncrementalHoareTripleChecker+Invalid, 862 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 16 mSolverCounterUnsat, 0 mSDtfsCounter, 529 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 77 GetRequests, 31 SyntacticMatches, 7 SemanticMatches, 39 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=82occurred in iteration=3, 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: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 114 NumberOfCodeBlocks, 114 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 132 ConstructedInterpolants, 8 QuantifiedInterpolants, 1131 SizeOfPredicates, 15 NumberOfNonLiveVariables, 226 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 6/12 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! [2023-11-17 12:06:13,062 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...