/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/chl-match-trans.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 13:48:05,434 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 13:48:05,485 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 13:48:05,488 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 13:48:05,488 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 13:48:05,501 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 13:48:05,502 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 13:48:05,502 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 13:48:05,503 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 13:48:05,503 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 13:48:05,503 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 13:48:05,503 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 13:48:05,503 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 13:48:05,504 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 13:48:05,504 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 13:48:05,504 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 13:48:05,504 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 13:48:05,505 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 13:48:05,505 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 13:48:05,505 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 13:48:05,505 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 13:48:05,505 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 13:48:05,506 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 13:48:05,506 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 13:48:05,506 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 13:48:05,506 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 13:48:05,507 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 13:48:05,507 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 13:48:05,507 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 13:48:05,507 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 13:48:05,508 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 13:48:05,508 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 13:48:05,508 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 13:48:05,508 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 13:48:05,508 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 13:48:05,509 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-24 13:48:05,743 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 13:48:05,755 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 13:48:05,757 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 13:48:05,757 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 13:48:05,759 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 13:48:05,760 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-match-trans.wvr.c [2023-08-24 13:48:06,753 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 13:48:06,921 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 13:48:06,921 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-match-trans.wvr.c [2023-08-24 13:48:06,928 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6270d4097/e8ae4161b7c3432da3b34657679243a5/FLAG16b93e37c [2023-08-24 13:48:06,940 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6270d4097/e8ae4161b7c3432da3b34657679243a5 [2023-08-24 13:48:06,944 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 13:48:06,946 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 13:48:06,947 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 13:48:06,947 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 13:48:06,949 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 13:48:06,950 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 01:48:06" (1/1) ... [2023-08-24 13:48:06,951 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@261ddf0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:48:06, skipping insertion in model container [2023-08-24 13:48:06,951 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 01:48:06" (1/1) ... [2023-08-24 13:48:06,970 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 13:48:07,096 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/chl-match-trans.wvr.c[2954,2967] [2023-08-24 13:48:07,099 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 13:48:07,107 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 13:48:07,122 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/chl-match-trans.wvr.c[2954,2967] [2023-08-24 13:48:07,123 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 13:48:07,132 INFO L206 MainTranslator]: Completed translation [2023-08-24 13:48:07,132 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:48:07 WrapperNode [2023-08-24 13:48:07,132 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 13:48:07,133 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 13:48:07,133 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 13:48:07,133 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 13:48:07,137 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:48:07" (1/1) ... [2023-08-24 13:48:07,142 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:48:07" (1/1) ... [2023-08-24 13:48:07,161 INFO L138 Inliner]: procedures = 23, calls = 33, calls flagged for inlining = 11, calls inlined = 21, statements flattened = 211 [2023-08-24 13:48:07,162 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 13:48:07,162 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 13:48:07,162 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 13:48:07,162 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 13:48:07,168 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:48:07" (1/1) ... [2023-08-24 13:48:07,168 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:48:07" (1/1) ... [2023-08-24 13:48:07,170 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:48:07" (1/1) ... [2023-08-24 13:48:07,170 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:48:07" (1/1) ... [2023-08-24 13:48:07,175 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:48:07" (1/1) ... [2023-08-24 13:48:07,176 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:48:07" (1/1) ... [2023-08-24 13:48:07,177 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:48:07" (1/1) ... [2023-08-24 13:48:07,178 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:48:07" (1/1) ... [2023-08-24 13:48:07,180 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 13:48:07,181 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 13:48:07,181 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 13:48:07,181 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 13:48:07,181 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:48:07" (1/1) ... [2023-08-24 13:48:07,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 13:48:07,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 13:48:07,206 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 13:48:07,212 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 13:48:07,228 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 13:48:07,228 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-24 13:48:07,229 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-24 13:48:07,229 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-24 13:48:07,229 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-24 13:48:07,229 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-24 13:48:07,229 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-24 13:48:07,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 13:48:07,229 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 13:48:07,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 13:48:07,229 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 13:48:07,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 13:48:07,230 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-24 13:48:07,230 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 13:48:07,231 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 13:48:07,303 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 13:48:07,305 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 13:48:07,623 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 13:48:07,633 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 13:48:07,634 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-24 13:48:07,636 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 01:48:07 BoogieIcfgContainer [2023-08-24 13:48:07,636 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 13:48:07,639 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 13:48:07,639 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 13:48:07,641 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 13:48:07,641 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 01:48:06" (1/3) ... [2023-08-24 13:48:07,641 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a59a7cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 01:48:07, skipping insertion in model container [2023-08-24 13:48:07,641 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:48:07" (2/3) ... [2023-08-24 13:48:07,642 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a59a7cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 01:48:07, skipping insertion in model container [2023-08-24 13:48:07,642 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 01:48:07" (3/3) ... [2023-08-24 13:48:07,643 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-match-trans.wvr.c [2023-08-24 13:48:07,653 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 13:48:07,654 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-24 13:48:07,654 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 13:48:07,719 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-24 13:48:07,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 246 places, 249 transitions, 522 flow [2023-08-24 13:48:07,841 INFO L124 PetriNetUnfolderBase]: 13/246 cut-off events. [2023-08-24 13:48:07,842 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-24 13:48:07,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 259 conditions, 246 events. 13/246 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 334 event pairs, 0 based on Foata normal form. 0/232 useless extension candidates. Maximal degree in co-relation 173. Up to 2 conditions per place. [2023-08-24 13:48:07,849 INFO L82 GeneralOperation]: Start removeDead. Operand has 246 places, 249 transitions, 522 flow [2023-08-24 13:48:07,856 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 233 places, 236 transitions, 490 flow [2023-08-24 13:48:07,858 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 13:48:07,867 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 233 places, 236 transitions, 490 flow [2023-08-24 13:48:07,871 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 233 places, 236 transitions, 490 flow [2023-08-24 13:48:07,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 233 places, 236 transitions, 490 flow [2023-08-24 13:48:07,938 INFO L124 PetriNetUnfolderBase]: 13/236 cut-off events. [2023-08-24 13:48:07,938 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-24 13:48:07,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 249 conditions, 236 events. 13/236 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 333 event pairs, 0 based on Foata normal form. 0/223 useless extension candidates. Maximal degree in co-relation 173. Up to 2 conditions per place. [2023-08-24 13:48:07,948 INFO L119 LiptonReduction]: Number of co-enabled transitions 16638 [2023-08-24 13:48:14,101 INFO L134 LiptonReduction]: Checked pairs total: 14490 [2023-08-24 13:48:14,101 INFO L136 LiptonReduction]: Total number of compositions: 272 [2023-08-24 13:48:14,110 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 13:48:14,114 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;@2a3b7aa2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 13:48:14,114 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-24 13:48:14,118 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 13:48:14,118 INFO L124 PetriNetUnfolderBase]: 0/15 cut-off events. [2023-08-24 13:48:14,119 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-24 13:48:14,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 13:48:14,119 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 13:48:14,119 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)] === [2023-08-24 13:48:14,122 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 13:48:14,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1045420437, now seen corresponding path program 1 times [2023-08-24 13:48:14,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 13:48:14,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767708020] [2023-08-24 13:48:14,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:48:14,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 13:48:14,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:48:14,838 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 13:48:14,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 13:48:14,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767708020] [2023-08-24 13:48:14,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767708020] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 13:48:14,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 13:48:14,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 13:48:14,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899152655] [2023-08-24 13:48:14,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 13:48:14,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 13:48:14,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 13:48:14,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 13:48:14,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-24 13:48:14,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 521 [2023-08-24 13:48:14,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 16 transitions, 50 flow. Second operand has 5 states, 5 states have (on average 201.2) internal successors, (1006), 5 states have internal predecessors, (1006), 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 13:48:14,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 13:48:14,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 521 [2023-08-24 13:48:14,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 13:48:14,999 INFO L124 PetriNetUnfolderBase]: 38/100 cut-off events. [2023-08-24 13:48:14,999 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2023-08-24 13:48:14,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 233 conditions, 100 events. 38/100 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 292 event pairs, 3 based on Foata normal form. 1/101 useless extension candidates. Maximal degree in co-relation 169. Up to 32 conditions per place. [2023-08-24 13:48:15,001 INFO L140 encePairwiseOnDemand]: 516/521 looper letters, 32 selfloop transitions, 5 changer transitions 7/44 dead transitions. [2023-08-24 13:48:15,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 44 transitions, 224 flow [2023-08-24 13:48:15,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 13:48:15,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 13:48:15,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1233 transitions. [2023-08-24 13:48:15,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3944337811900192 [2023-08-24 13:48:15,013 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1233 transitions. [2023-08-24 13:48:15,014 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1233 transitions. [2023-08-24 13:48:15,015 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 13:48:15,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1233 transitions. [2023-08-24 13:48:15,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 205.5) internal successors, (1233), 6 states have internal predecessors, (1233), 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 13:48:15,026 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 521.0) internal successors, (3647), 7 states have internal predecessors, (3647), 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 13:48:15,027 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 521.0) internal successors, (3647), 7 states have internal predecessors, (3647), 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 13:48:15,028 INFO L175 Difference]: Start difference. First operand has 26 places, 16 transitions, 50 flow. Second operand 6 states and 1233 transitions. [2023-08-24 13:48:15,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 44 transitions, 224 flow [2023-08-24 13:48:15,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 44 transitions, 192 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-24 13:48:15,032 INFO L231 Difference]: Finished difference. Result has 27 places, 18 transitions, 57 flow [2023-08-24 13:48:15,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=521, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=57, PETRI_PLACES=27, PETRI_TRANSITIONS=18} [2023-08-24 13:48:15,035 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 1 predicate places. [2023-08-24 13:48:15,035 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 18 transitions, 57 flow [2023-08-24 13:48:15,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 201.2) internal successors, (1006), 5 states have internal predecessors, (1006), 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 13:48:15,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 13:48:15,036 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 13:48:15,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 13:48:15,036 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)] === [2023-08-24 13:48:15,036 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 13:48:15,036 INFO L85 PathProgramCache]: Analyzing trace with hash 929829681, now seen corresponding path program 2 times [2023-08-24 13:48:15,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 13:48:15,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838030826] [2023-08-24 13:48:15,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:48:15,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 13:48:15,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:48:15,400 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 13:48:15,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 13:48:15,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838030826] [2023-08-24 13:48:15,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838030826] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 13:48:15,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 13:48:15,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 13:48:15,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515400748] [2023-08-24 13:48:15,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 13:48:15,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 13:48:15,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 13:48:15,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 13:48:15,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-24 13:48:15,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 521 [2023-08-24 13:48:15,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 57 flow. Second operand has 5 states, 5 states have (on average 201.2) internal successors, (1006), 5 states have internal predecessors, (1006), 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 13:48:15,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 13:48:15,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 521 [2023-08-24 13:48:15,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 13:48:15,536 INFO L124 PetriNetUnfolderBase]: 39/109 cut-off events. [2023-08-24 13:48:15,536 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-24 13:48:15,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 284 conditions, 109 events. 39/109 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 350 event pairs, 2 based on Foata normal form. 1/110 useless extension candidates. Maximal degree in co-relation 273. Up to 42 conditions per place. [2023-08-24 13:48:15,537 INFO L140 encePairwiseOnDemand]: 516/521 looper letters, 32 selfloop transitions, 6 changer transitions 11/49 dead transitions. [2023-08-24 13:48:15,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 49 transitions, 243 flow [2023-08-24 13:48:15,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 13:48:15,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 13:48:15,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1236 transitions. [2023-08-24 13:48:15,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39539347408829173 [2023-08-24 13:48:15,539 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1236 transitions. [2023-08-24 13:48:15,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1236 transitions. [2023-08-24 13:48:15,540 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 13:48:15,540 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1236 transitions. [2023-08-24 13:48:15,542 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 206.0) internal successors, (1236), 6 states have internal predecessors, (1236), 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 13:48:15,545 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 521.0) internal successors, (3647), 7 states have internal predecessors, (3647), 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 13:48:15,546 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 521.0) internal successors, (3647), 7 states have internal predecessors, (3647), 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 13:48:15,546 INFO L175 Difference]: Start difference. First operand has 27 places, 18 transitions, 57 flow. Second operand 6 states and 1236 transitions. [2023-08-24 13:48:15,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 49 transitions, 243 flow [2023-08-24 13:48:15,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 49 transitions, 239 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-24 13:48:15,548 INFO L231 Difference]: Finished difference. Result has 33 places, 20 transitions, 86 flow [2023-08-24 13:48:15,548 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=521, PETRI_DIFFERENCE_MINUEND_FLOW=55, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=86, PETRI_PLACES=33, PETRI_TRANSITIONS=20} [2023-08-24 13:48:15,548 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 7 predicate places. [2023-08-24 13:48:15,549 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 20 transitions, 86 flow [2023-08-24 13:48:15,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 201.2) internal successors, (1006), 5 states have internal predecessors, (1006), 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 13:48:15,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 13:48:15,549 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 13:48:15,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 13:48:15,550 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)] === [2023-08-24 13:48:15,550 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 13:48:15,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1723380999, now seen corresponding path program 3 times [2023-08-24 13:48:15,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 13:48:15,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596746162] [2023-08-24 13:48:15,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:48:15,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 13:48:15,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:48:15,861 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 13:48:15,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 13:48:15,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596746162] [2023-08-24 13:48:15,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596746162] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 13:48:15,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 13:48:15,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 13:48:15,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851336571] [2023-08-24 13:48:15,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 13:48:15,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 13:48:15,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 13:48:15,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 13:48:15,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-24 13:48:15,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 521 [2023-08-24 13:48:15,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 20 transitions, 86 flow. Second operand has 5 states, 5 states have (on average 201.2) internal successors, (1006), 5 states have internal predecessors, (1006), 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 13:48:15,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 13:48:15,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 521 [2023-08-24 13:48:15,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 13:48:15,965 INFO L124 PetriNetUnfolderBase]: 30/90 cut-off events. [2023-08-24 13:48:15,965 INFO L125 PetriNetUnfolderBase]: For 113/113 co-relation queries the response was YES. [2023-08-24 13:48:15,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 291 conditions, 90 events. 30/90 cut-off events. For 113/113 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 258 event pairs, 7 based on Foata normal form. 1/91 useless extension candidates. Maximal degree in co-relation 277. Up to 37 conditions per place. [2023-08-24 13:48:15,966 INFO L140 encePairwiseOnDemand]: 516/521 looper letters, 26 selfloop transitions, 8 changer transitions 5/39 dead transitions. [2023-08-24 13:48:15,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 39 transitions, 222 flow [2023-08-24 13:48:15,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 13:48:15,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 13:48:15,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1028 transitions. [2023-08-24 13:48:15,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3946257197696737 [2023-08-24 13:48:15,968 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1028 transitions. [2023-08-24 13:48:15,968 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1028 transitions. [2023-08-24 13:48:15,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 13:48:15,969 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1028 transitions. [2023-08-24 13:48:15,970 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 205.6) internal successors, (1028), 5 states have internal predecessors, (1028), 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 13:48:15,973 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 521.0) internal successors, (3126), 6 states have internal predecessors, (3126), 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 13:48:15,974 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 521.0) internal successors, (3126), 6 states have internal predecessors, (3126), 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 13:48:15,974 INFO L175 Difference]: Start difference. First operand has 33 places, 20 transitions, 86 flow. Second operand 5 states and 1028 transitions. [2023-08-24 13:48:15,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 39 transitions, 222 flow [2023-08-24 13:48:15,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 39 transitions, 206 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-08-24 13:48:15,975 INFO L231 Difference]: Finished difference. Result has 35 places, 22 transitions, 117 flow [2023-08-24 13:48:15,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=521, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=117, PETRI_PLACES=35, PETRI_TRANSITIONS=22} [2023-08-24 13:48:15,976 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 9 predicate places. [2023-08-24 13:48:15,976 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 22 transitions, 117 flow [2023-08-24 13:48:15,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 201.2) internal successors, (1006), 5 states have internal predecessors, (1006), 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 13:48:15,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 13:48:15,977 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 13:48:15,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-24 13:48:15,977 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)] === [2023-08-24 13:48:15,977 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 13:48:15,978 INFO L85 PathProgramCache]: Analyzing trace with hash 541492063, now seen corresponding path program 4 times [2023-08-24 13:48:15,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 13:48:15,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770728003] [2023-08-24 13:48:15,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:48:15,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 13:48:15,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:48:16,249 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 13:48:16,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 13:48:16,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770728003] [2023-08-24 13:48:16,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770728003] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 13:48:16,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 13:48:16,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 13:48:16,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959000684] [2023-08-24 13:48:16,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 13:48:16,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 13:48:16,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 13:48:16,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 13:48:16,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-24 13:48:16,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 521 [2023-08-24 13:48:16,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 22 transitions, 117 flow. Second operand has 5 states, 5 states have (on average 201.2) internal successors, (1006), 5 states have internal predecessors, (1006), 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 13:48:16,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 13:48:16,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 521 [2023-08-24 13:48:16,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 13:48:16,354 INFO L124 PetriNetUnfolderBase]: 30/89 cut-off events. [2023-08-24 13:48:16,354 INFO L125 PetriNetUnfolderBase]: For 149/149 co-relation queries the response was YES. [2023-08-24 13:48:16,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 319 conditions, 89 events. 30/89 cut-off events. For 149/149 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 263 event pairs, 5 based on Foata normal form. 1/90 useless extension candidates. Maximal degree in co-relation 101. Up to 33 conditions per place. [2023-08-24 13:48:16,355 INFO L140 encePairwiseOnDemand]: 516/521 looper letters, 17 selfloop transitions, 6 changer transitions 19/42 dead transitions. [2023-08-24 13:48:16,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 42 transitions, 261 flow [2023-08-24 13:48:16,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 13:48:16,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 13:48:16,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1029 transitions. [2023-08-24 13:48:16,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39500959692898274 [2023-08-24 13:48:16,357 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1029 transitions. [2023-08-24 13:48:16,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1029 transitions. [2023-08-24 13:48:16,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 13:48:16,358 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1029 transitions. [2023-08-24 13:48:16,359 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 205.8) internal successors, (1029), 5 states have internal predecessors, (1029), 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 13:48:16,362 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 521.0) internal successors, (3126), 6 states have internal predecessors, (3126), 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 13:48:16,363 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 521.0) internal successors, (3126), 6 states have internal predecessors, (3126), 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 13:48:16,363 INFO L175 Difference]: Start difference. First operand has 35 places, 22 transitions, 117 flow. Second operand 5 states and 1029 transitions. [2023-08-24 13:48:16,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 42 transitions, 261 flow [2023-08-24 13:48:16,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 42 transitions, 260 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 13:48:16,364 INFO L231 Difference]: Finished difference. Result has 39 places, 19 transitions, 112 flow [2023-08-24 13:48:16,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=521, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=112, PETRI_PLACES=39, PETRI_TRANSITIONS=19} [2023-08-24 13:48:16,365 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 13 predicate places. [2023-08-24 13:48:16,365 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 19 transitions, 112 flow [2023-08-24 13:48:16,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 201.2) internal successors, (1006), 5 states have internal predecessors, (1006), 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 13:48:16,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 13:48:16,365 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 13:48:16,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-24 13:48:16,366 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 13:48:16,366 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 13:48:16,366 INFO L85 PathProgramCache]: Analyzing trace with hash -769761031, now seen corresponding path program 5 times [2023-08-24 13:48:16,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 13:48:16,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161885363] [2023-08-24 13:48:16,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:48:16,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 13:48:16,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:48:16,655 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 13:48:16,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 13:48:16,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161885363] [2023-08-24 13:48:16,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161885363] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 13:48:16,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 13:48:16,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 13:48:16,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033977582] [2023-08-24 13:48:16,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 13:48:16,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 13:48:16,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 13:48:16,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 13:48:16,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-24 13:48:16,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 521 [2023-08-24 13:48:16,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 19 transitions, 112 flow. Second operand has 5 states, 5 states have (on average 201.2) internal successors, (1006), 5 states have internal predecessors, (1006), 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 13:48:16,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 13:48:16,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 521 [2023-08-24 13:48:16,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 13:48:16,758 INFO L124 PetriNetUnfolderBase]: 8/40 cut-off events. [2023-08-24 13:48:16,758 INFO L125 PetriNetUnfolderBase]: For 46/46 co-relation queries the response was YES. [2023-08-24 13:48:16,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167 conditions, 40 events. 8/40 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 59 event pairs, 0 based on Foata normal form. 1/41 useless extension candidates. Maximal degree in co-relation 91. Up to 19 conditions per place. [2023-08-24 13:48:16,759 INFO L140 encePairwiseOnDemand]: 516/521 looper letters, 15 selfloop transitions, 3 changer transitions 12/30 dead transitions. [2023-08-24 13:48:16,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 30 transitions, 198 flow [2023-08-24 13:48:16,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 13:48:16,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 13:48:16,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1219 transitions. [2023-08-24 13:48:16,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38995521433141395 [2023-08-24 13:48:16,761 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1219 transitions. [2023-08-24 13:48:16,761 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1219 transitions. [2023-08-24 13:48:16,762 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 13:48:16,762 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1219 transitions. [2023-08-24 13:48:16,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 203.16666666666666) internal successors, (1219), 6 states have internal predecessors, (1219), 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 13:48:16,766 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 521.0) internal successors, (3647), 7 states have internal predecessors, (3647), 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 13:48:16,767 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 521.0) internal successors, (3647), 7 states have internal predecessors, (3647), 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 13:48:16,767 INFO L175 Difference]: Start difference. First operand has 39 places, 19 transitions, 112 flow. Second operand 6 states and 1219 transitions. [2023-08-24 13:48:16,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 30 transitions, 198 flow [2023-08-24 13:48:16,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 30 transitions, 149 flow, removed 3 selfloop flow, removed 12 redundant places. [2023-08-24 13:48:16,768 INFO L231 Difference]: Finished difference. Result has 33 places, 16 transitions, 57 flow [2023-08-24 13:48:16,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=521, PETRI_DIFFERENCE_MINUEND_FLOW=65, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=57, PETRI_PLACES=33, PETRI_TRANSITIONS=16} [2023-08-24 13:48:16,769 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 7 predicate places. [2023-08-24 13:48:16,769 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 16 transitions, 57 flow [2023-08-24 13:48:16,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 201.2) internal successors, (1006), 5 states have internal predecessors, (1006), 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 13:48:16,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 13:48:16,769 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 13:48:16,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-24 13:48:16,769 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 13:48:16,770 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 13:48:16,770 INFO L85 PathProgramCache]: Analyzing trace with hash 163140025, now seen corresponding path program 6 times [2023-08-24 13:48:16,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 13:48:16,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036926033] [2023-08-24 13:48:16,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:48:16,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 13:48:16,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:48:16,997 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 13:48:16,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 13:48:16,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036926033] [2023-08-24 13:48:16,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036926033] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 13:48:16,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 13:48:16,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 13:48:16,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484749053] [2023-08-24 13:48:16,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 13:48:16,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 13:48:16,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 13:48:16,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 13:48:16,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-24 13:48:17,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 521 [2023-08-24 13:48:17,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 16 transitions, 57 flow. Second operand has 5 states, 5 states have (on average 201.2) internal successors, (1006), 5 states have internal predecessors, (1006), 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 13:48:17,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 13:48:17,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 521 [2023-08-24 13:48:17,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 13:48:17,066 INFO L124 PetriNetUnfolderBase]: 3/21 cut-off events. [2023-08-24 13:48:17,066 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-24 13:48:17,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 21 events. 3/21 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 11 event pairs, 0 based on Foata normal form. 1/22 useless extension candidates. Maximal degree in co-relation 64. Up to 8 conditions per place. [2023-08-24 13:48:17,066 INFO L140 encePairwiseOnDemand]: 516/521 looper letters, 0 selfloop transitions, 0 changer transitions 18/18 dead transitions. [2023-08-24 13:48:17,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 18 transitions, 95 flow [2023-08-24 13:48:17,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 13:48:17,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 13:48:17,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1207 transitions. [2023-08-24 13:48:17,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38611644273832374 [2023-08-24 13:48:17,069 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1207 transitions. [2023-08-24 13:48:17,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1207 transitions. [2023-08-24 13:48:17,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 13:48:17,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1207 transitions. [2023-08-24 13:48:17,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 201.16666666666666) internal successors, (1207), 6 states have internal predecessors, (1207), 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 13:48:17,074 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 521.0) internal successors, (3647), 7 states have internal predecessors, (3647), 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 13:48:17,074 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 521.0) internal successors, (3647), 7 states have internal predecessors, (3647), 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 13:48:17,074 INFO L175 Difference]: Start difference. First operand has 33 places, 16 transitions, 57 flow. Second operand 6 states and 1207 transitions. [2023-08-24 13:48:17,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 18 transitions, 95 flow [2023-08-24 13:48:17,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 18 transitions, 79 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-08-24 13:48:17,075 INFO L231 Difference]: Finished difference. Result has 28 places, 0 transitions, 0 flow [2023-08-24 13:48:17,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=521, PETRI_DIFFERENCE_MINUEND_FLOW=37, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=28, PETRI_TRANSITIONS=0} [2023-08-24 13:48:17,075 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 2 predicate places. [2023-08-24 13:48:17,075 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 0 transitions, 0 flow [2023-08-24 13:48:17,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 201.2) internal successors, (1006), 5 states have internal predecessors, (1006), 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 13:48:17,078 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-24 13:48:17,078 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-24 13:48:17,078 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-24 13:48:17,078 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-24 13:48:17,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-24 13:48:17,078 INFO L445 BasicCegarLoop]: Path program histogram: [6] [2023-08-24 13:48:17,080 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-24 13:48:17,080 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-24 13:48:17,082 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.08 01:48:17 BasicIcfg [2023-08-24 13:48:17,082 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-24 13:48:17,083 INFO L158 Benchmark]: Toolchain (without parser) took 10136.49ms. Allocated memory was 375.4MB in the beginning and 645.9MB in the end (delta: 270.5MB). Free memory was 351.1MB in the beginning and 397.0MB in the end (delta: -45.9MB). Peak memory consumption was 225.7MB. Max. memory is 16.0GB. [2023-08-24 13:48:17,083 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 375.4MB. Free memory is still 353.2MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 13:48:17,083 INFO L158 Benchmark]: CACSL2BoogieTranslator took 185.20ms. Allocated memory is still 375.4MB. Free memory was 351.1MB in the beginning and 339.0MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-24 13:48:17,083 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.86ms. Allocated memory is still 375.4MB. Free memory was 339.0MB in the beginning and 336.9MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 13:48:17,084 INFO L158 Benchmark]: Boogie Preprocessor took 18.36ms. Allocated memory is still 375.4MB. Free memory was 336.9MB in the beginning and 334.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 13:48:17,084 INFO L158 Benchmark]: RCFGBuilder took 455.03ms. Allocated memory is still 375.4MB. Free memory was 334.8MB in the beginning and 313.9MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-24 13:48:17,084 INFO L158 Benchmark]: TraceAbstraction took 9443.71ms. Allocated memory was 375.4MB in the beginning and 645.9MB in the end (delta: 270.5MB). Free memory was 313.3MB in the beginning and 397.0MB in the end (delta: -83.6MB). Peak memory consumption was 187.9MB. Max. memory is 16.0GB. [2023-08-24 13:48:17,085 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 375.4MB. Free memory is still 353.2MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 185.20ms. Allocated memory is still 375.4MB. Free memory was 351.1MB in the beginning and 339.0MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 28.86ms. Allocated memory is still 375.4MB. Free memory was 339.0MB in the beginning and 336.9MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 18.36ms. Allocated memory is still 375.4MB. Free memory was 336.9MB in the beginning and 334.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 455.03ms. Allocated memory is still 375.4MB. Free memory was 334.8MB in the beginning and 313.9MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * TraceAbstraction took 9443.71ms. Allocated memory was 375.4MB in the beginning and 645.9MB in the end (delta: 270.5MB). Free memory was 313.3MB in the beginning and 397.0MB in the end (delta: -83.6MB). Peak memory consumption was 187.9MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.2s, 233 PlacesBefore, 26 PlacesAfterwards, 236 TransitionsBefore, 16 TransitionsAfterwards, 16638 CoEnabledTransitionPairs, 8 FixpointIterations, 69 TrivialSequentialCompositions, 138 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 49 ConcurrentYvCompositions, 13 ChoiceCompositions, 272 TotalNumberOfCompositions, 14490 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 14490, independent: 14490, independent conditional: 0, independent unconditional: 14490, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 9968, independent: 9968, independent conditional: 0, independent unconditional: 9968, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 14490, independent: 4522, independent conditional: 0, independent unconditional: 4522, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 9968, unknown conditional: 0, unknown unconditional: 9968] , Statistics on independence cache: Total cache size (in pairs): 18, Positive cache size: 18, Positive conditional cache size: 0, Positive unconditional cache size: 18, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 88]: 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 7 procedures, 372 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: 9.3s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 196 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 196 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 411 IncrementalHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 0 mSDtfsCounter, 411 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=117occurred in iteration=3, InterpolantAutomatonStates: 34, 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, 0.2s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 96 NumberOfCodeBlocks, 96 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 90 ConstructedInterpolants, 0 QuantifiedInterpolants, 1170 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 13:48:17,103 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...