/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.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-ext/18_read_write_lock.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 00:06:42,692 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 00:06:42,693 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 00:06:42,722 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-01-28 00:06:42,764 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-28 00:06:42,786 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 00:06:42,786 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 00:06:42,786 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 00:06:42,786 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 00:06:42,787 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 00:06:42,787 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 00:06:42,787 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 00:06:42,787 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 00:06:42,787 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 00:06:42,787 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 00:06:42,787 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 00:06:42,787 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 00:06:42,787 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 00:06:42,787 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 00:06:42,788 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 00:06:42,788 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 00:06:42,788 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 00:06:42,788 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 00:06:42,788 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 00:06:42,788 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 00:06:42,788 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 00:06:42,788 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 00:06:42,788 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 00:06:42,788 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 00:06:42,790 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 00:06:42,790 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 00:06:42,790 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 00:06:42,791 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 00:06:42,791 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 00:06:42,791 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 00:06:42,791 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 00:06:42,791 INFO L138 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-28 00:06:42,980 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 00:06:42,994 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 00:06:42,996 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 00:06:42,997 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 00:06:42,997 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 00:06:42,998 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/18_read_write_lock.i [2023-01-28 00:06:43,936 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 00:06:44,185 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 00:06:44,185 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/18_read_write_lock.i [2023-01-28 00:06:44,200 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9522f67a/c0fb17813fa343189f40a1618ac25e0d/FLAGc1b0397fc [2023-01-28 00:06:44,213 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9522f67a/c0fb17813fa343189f40a1618ac25e0d [2023-01-28 00:06:44,215 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 00:06:44,216 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 00:06:44,218 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 00:06:44,218 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 00:06:44,220 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 00:06:44,220 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 12:06:44" (1/1) ... [2023-01-28 00:06:44,221 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1059c84b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:06:44, skipping insertion in model container [2023-01-28 00:06:44,221 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 12:06:44" (1/1) ... [2023-01-28 00:06:44,225 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 00:06:44,259 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 00:06:44,391 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-01-28 00:06:44,491 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/18_read_write_lock.i[31161,31174] [2023-01-28 00:06:44,502 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 00:06:44,508 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 00:06:44,517 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-01-28 00:06:44,534 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/18_read_write_lock.i[31161,31174] [2023-01-28 00:06:44,536 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 00:06:44,555 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 00:06:44,556 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 00:06:44,556 WARN L667 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 00:06:44,560 INFO L208 MainTranslator]: Completed translation [2023-01-28 00:06:44,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:06:44 WrapperNode [2023-01-28 00:06:44,561 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 00:06:44,561 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 00:06:44,562 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 00:06:44,562 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 00:06:44,566 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:06:44" (1/1) ... [2023-01-28 00:06:44,582 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:06:44" (1/1) ... [2023-01-28 00:06:44,600 INFO L138 Inliner]: procedures = 174, calls = 32, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 78 [2023-01-28 00:06:44,601 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 00:06:44,602 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 00:06:44,602 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 00:06:44,602 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 00:06:44,607 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:06:44" (1/1) ... [2023-01-28 00:06:44,608 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:06:44" (1/1) ... [2023-01-28 00:06:44,619 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:06:44" (1/1) ... [2023-01-28 00:06:44,620 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:06:44" (1/1) ... [2023-01-28 00:06:44,623 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:06:44" (1/1) ... [2023-01-28 00:06:44,624 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:06:44" (1/1) ... [2023-01-28 00:06:44,625 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:06:44" (1/1) ... [2023-01-28 00:06:44,626 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:06:44" (1/1) ... [2023-01-28 00:06:44,627 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 00:06:44,628 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 00:06:44,628 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 00:06:44,628 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 00:06:44,628 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:06:44" (1/1) ... [2023-01-28 00:06:44,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 00:06:44,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 00:06:44,694 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) [2023-01-28 00:06:44,701 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 [2023-01-28 00:06:44,726 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-01-28 00:06:44,727 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-01-28 00:06:44,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 00:06:44,731 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 00:06:44,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 00:06:44,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 00:06:44,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 00:06:44,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 00:06:44,732 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 00:06:44,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 00:06:44,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 00:06:44,733 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-28 00:06:44,816 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 00:06:44,817 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 00:06:44,967 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 00:06:45,004 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 00:06:45,004 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-01-28 00:06:45,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 12:06:45 BoogieIcfgContainer [2023-01-28 00:06:45,006 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 00:06:45,007 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 00:06:45,007 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 00:06:45,009 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 00:06:45,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 12:06:44" (1/3) ... [2023-01-28 00:06:45,010 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5adadc8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 12:06:45, skipping insertion in model container [2023-01-28 00:06:45,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:06:44" (2/3) ... [2023-01-28 00:06:45,010 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5adadc8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 12:06:45, skipping insertion in model container [2023-01-28 00:06:45,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 12:06:45" (3/3) ... [2023-01-28 00:06:45,011 INFO L112 eAbstractionObserver]: Analyzing ICFG 18_read_write_lock.i [2023-01-28 00:06:45,023 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 00:06:45,023 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 00:06:45,024 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 00:06:45,049 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 00:06:45,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 51 transitions, 107 flow [2023-01-28 00:06:45,113 INFO L130 PetriNetUnfolder]: 1/50 cut-off events. [2023-01-28 00:06:45,113 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 00:06:45,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 50 events. 1/50 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 18 event pairs, 0 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 32. Up to 2 conditions per place. [2023-01-28 00:06:45,116 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 51 transitions, 107 flow [2023-01-28 00:06:45,119 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 37 transitions, 77 flow [2023-01-28 00:06:45,121 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 00:06:45,127 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 41 places, 37 transitions, 77 flow [2023-01-28 00:06:45,129 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 41 places, 37 transitions, 77 flow [2023-01-28 00:06:45,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 41 places, 37 transitions, 77 flow [2023-01-28 00:06:45,136 INFO L130 PetriNetUnfolder]: 0/37 cut-off events. [2023-01-28 00:06:45,136 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 00:06:45,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 37 events. 0/37 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 11 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2023-01-28 00:06:45,137 INFO L119 LiptonReduction]: Number of co-enabled transitions 156 [2023-01-28 00:06:46,219 INFO L134 LiptonReduction]: Checked pairs total: 306 [2023-01-28 00:06:46,219 INFO L136 LiptonReduction]: Total number of compositions: 29 [2023-01-28 00:06:46,235 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 00:06:46,239 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;@2d4cb47c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 00:06:46,239 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-01-28 00:06:46,242 INFO L130 PetriNetUnfolder]: 0/7 cut-off events. [2023-01-28 00:06:46,242 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 00:06:46,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:06:46,242 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-01-28 00:06:46,243 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 00:06:46,246 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:06:46,246 INFO L85 PathProgramCache]: Analyzing trace with hash 216713938, now seen corresponding path program 1 times [2023-01-28 00:06:46,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:06:46,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119570111] [2023-01-28 00:06:46,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:06:46,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:06:46,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:06:46,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 00:06:46,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:06:46,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119570111] [2023-01-28 00:06:46,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119570111] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:06:46,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:06:46,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 00:06:46,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842030141] [2023-01-28 00:06:46,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:06:46,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 00:06:46,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:06:46,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 00:06:46,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 00:06:46,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 80 [2023-01-28 00:06:46,432 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 12 places, 8 transitions, 19 flow. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 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) [2023-01-28 00:06:46,432 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:06:46,432 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 80 [2023-01-28 00:06:46,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:06:46,450 INFO L130 PetriNetUnfolder]: 6/23 cut-off events. [2023-01-28 00:06:46,450 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 00:06:46,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 23 events. 6/23 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 36 event pairs, 3 based on Foata normal form. 4/27 useless extension candidates. Maximal degree in co-relation 42. Up to 12 conditions per place. [2023-01-28 00:06:46,451 INFO L137 encePairwiseOnDemand]: 76/80 looper letters, 6 selfloop transitions, 2 changer transitions 3/11 dead transitions. [2023-01-28 00:06:46,451 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 14 places, 11 transitions, 47 flow [2023-01-28 00:06:46,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 00:06:46,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 00:06:46,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 129 transitions. [2023-01-28 00:06:46,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5375 [2023-01-28 00:06:46,460 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 129 transitions. [2023-01-28 00:06:46,461 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 129 transitions. [2023-01-28 00:06:46,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:06:46,463 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 129 transitions. [2023-01-28 00:06:46,464 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 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) [2023-01-28 00:06:46,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 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) [2023-01-28 00:06:46,467 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 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) [2023-01-28 00:06:46,468 INFO L175 Difference]: Start difference. First operand has 12 places, 8 transitions, 19 flow. Second operand 3 states and 129 transitions. [2023-01-28 00:06:46,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 14 places, 11 transitions, 47 flow [2023-01-28 00:06:46,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 13 places, 11 transitions, 46 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 00:06:46,471 INFO L231 Difference]: Finished difference. Result has 15 places, 8 transitions, 30 flow [2023-01-28 00:06:46,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=18, PETRI_DIFFERENCE_MINUEND_PLACES=11, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=30, PETRI_PLACES=15, PETRI_TRANSITIONS=8} [2023-01-28 00:06:46,474 INFO L281 CegarLoopForPetriNet]: 12 programPoint places, 3 predicate places. [2023-01-28 00:06:46,474 INFO L495 AbstractCegarLoop]: Abstraction has has 15 places, 8 transitions, 30 flow [2023-01-28 00:06:46,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 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) [2023-01-28 00:06:46,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:06:46,475 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:06:46,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 00:06:46,475 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 00:06:46,476 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:06:46,476 INFO L85 PathProgramCache]: Analyzing trace with hash 2103681018, now seen corresponding path program 1 times [2023-01-28 00:06:46,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:06:46,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194888906] [2023-01-28 00:06:46,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:06:46,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:06:46,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:06:46,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 00:06:46,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:06:46,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194888906] [2023-01-28 00:06:46,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194888906] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:06:46,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:06:46,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 00:06:46,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053407133] [2023-01-28 00:06:46,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:06:46,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 00:06:46,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:06:46,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 00:06:46,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 00:06:46,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 80 [2023-01-28 00:06:46,553 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 8 transitions, 30 flow. Second operand has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 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) [2023-01-28 00:06:46,553 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:06:46,553 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 80 [2023-01-28 00:06:46,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:06:46,565 INFO L130 PetriNetUnfolder]: 2/16 cut-off events. [2023-01-28 00:06:46,565 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-28 00:06:46,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 16 events. 2/16 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 19 event pairs, 1 based on Foata normal form. 2/18 useless extension candidates. Maximal degree in co-relation 34. Up to 10 conditions per place. [2023-01-28 00:06:46,566 INFO L137 encePairwiseOnDemand]: 77/80 looper letters, 5 selfloop transitions, 2 changer transitions 1/9 dead transitions. [2023-01-28 00:06:46,566 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 9 transitions, 48 flow [2023-01-28 00:06:46,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 00:06:46,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 00:06:46,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 181 transitions. [2023-01-28 00:06:46,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.565625 [2023-01-28 00:06:46,568 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 181 transitions. [2023-01-28 00:06:46,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 181 transitions. [2023-01-28 00:06:46,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:06:46,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 181 transitions. [2023-01-28 00:06:46,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 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) [2023-01-28 00:06:46,570 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 80.0) internal successors, (400), 5 states have internal predecessors, (400), 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) [2023-01-28 00:06:46,570 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 80.0) internal successors, (400), 5 states have internal predecessors, (400), 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) [2023-01-28 00:06:46,570 INFO L175 Difference]: Start difference. First operand has 15 places, 8 transitions, 30 flow. Second operand 4 states and 181 transitions. [2023-01-28 00:06:46,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 9 transitions, 48 flow [2023-01-28 00:06:46,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 9 transitions, 44 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 00:06:46,571 INFO L231 Difference]: Finished difference. Result has 17 places, 8 transitions, 33 flow [2023-01-28 00:06:46,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=26, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=33, PETRI_PLACES=17, PETRI_TRANSITIONS=8} [2023-01-28 00:06:46,572 INFO L281 CegarLoopForPetriNet]: 12 programPoint places, 5 predicate places. [2023-01-28 00:06:46,572 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 8 transitions, 33 flow [2023-01-28 00:06:46,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 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) [2023-01-28 00:06:46,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:06:46,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:06:46,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 00:06:46,573 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 00:06:46,573 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:06:46,573 INFO L85 PathProgramCache]: Analyzing trace with hash 2084912688, now seen corresponding path program 2 times [2023-01-28 00:06:46,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:06:46,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094089778] [2023-01-28 00:06:46,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:06:46,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:06:46,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:06:46,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 00:06:46,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:06:46,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094089778] [2023-01-28 00:06:46,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094089778] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:06:46,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:06:46,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 00:06:46,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862983031] [2023-01-28 00:06:46,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:06:46,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 00:06:46,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:06:46,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 00:06:46,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 00:06:46,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 80 [2023-01-28 00:06:46,642 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 8 transitions, 33 flow. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 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) [2023-01-28 00:06:46,642 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:06:46,642 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 80 [2023-01-28 00:06:46,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:06:46,650 INFO L130 PetriNetUnfolder]: 0/8 cut-off events. [2023-01-28 00:06:46,650 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2023-01-28 00:06:46,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 8 events. 0/8 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 3 event pairs, 0 based on Foata normal form. 1/9 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place. [2023-01-28 00:06:46,650 INFO L137 encePairwiseOnDemand]: 77/80 looper letters, 0 selfloop transitions, 0 changer transitions 7/7 dead transitions. [2023-01-28 00:06:46,651 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 7 transitions, 41 flow [2023-01-28 00:06:46,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 00:06:46,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 00:06:46,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 139 transitions. [2023-01-28 00:06:46,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5791666666666667 [2023-01-28 00:06:46,652 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 139 transitions. [2023-01-28 00:06:46,652 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 139 transitions. [2023-01-28 00:06:46,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:06:46,652 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 139 transitions. [2023-01-28 00:06:46,653 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 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) [2023-01-28 00:06:46,654 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 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) [2023-01-28 00:06:46,654 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 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) [2023-01-28 00:06:46,654 INFO L175 Difference]: Start difference. First operand has 17 places, 8 transitions, 33 flow. Second operand 3 states and 139 transitions. [2023-01-28 00:06:46,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 7 transitions, 41 flow [2023-01-28 00:06:46,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 15 places, 7 transitions, 36 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-01-28 00:06:46,654 INFO L231 Difference]: Finished difference. Result has 15 places, 0 transitions, 0 flow [2023-01-28 00:06:46,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=24, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=15, PETRI_TRANSITIONS=0} [2023-01-28 00:06:46,655 INFO L281 CegarLoopForPetriNet]: 12 programPoint places, 3 predicate places. [2023-01-28 00:06:46,655 INFO L495 AbstractCegarLoop]: Abstraction has has 15 places, 0 transitions, 0 flow [2023-01-28 00:06:46,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 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) [2023-01-28 00:06:46,657 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-01-28 00:06:46,658 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-01-28 00:06:46,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 00:06:46,658 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1] [2023-01-28 00:06:46,660 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 00:06:46,660 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 00:06:46,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 12:06:46 BasicIcfg [2023-01-28 00:06:46,663 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 00:06:46,663 INFO L158 Benchmark]: Toolchain (without parser) took 2446.97ms. Allocated memory was 331.4MB in the beginning and 457.2MB in the end (delta: 125.8MB). Free memory was 290.3MB in the beginning and 414.0MB in the end (delta: -123.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-01-28 00:06:46,663 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 331.4MB. Free memory is still 277.4MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 00:06:46,664 INFO L158 Benchmark]: CACSL2BoogieTranslator took 343.38ms. Allocated memory is still 331.4MB. Free memory was 290.3MB in the beginning and 270.5MB in the end (delta: 19.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-01-28 00:06:46,664 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.59ms. Allocated memory is still 331.4MB. Free memory was 270.5MB in the beginning and 268.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 00:06:46,664 INFO L158 Benchmark]: Boogie Preprocessor took 25.60ms. Allocated memory is still 331.4MB. Free memory was 268.4MB in the beginning and 267.2MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 00:06:46,665 INFO L158 Benchmark]: RCFGBuilder took 378.44ms. Allocated memory is still 331.4MB. Free memory was 266.3MB in the beginning and 250.6MB in the end (delta: 15.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-01-28 00:06:46,665 INFO L158 Benchmark]: TraceAbstraction took 1655.32ms. Allocated memory was 331.4MB in the beginning and 457.2MB in the end (delta: 125.8MB). Free memory was 250.5MB in the beginning and 414.0MB in the end (delta: -163.6MB). There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 00:06:46,666 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 331.4MB. Free memory is still 277.4MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 343.38ms. Allocated memory is still 331.4MB. Free memory was 290.3MB in the beginning and 270.5MB in the end (delta: 19.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 39.59ms. Allocated memory is still 331.4MB. Free memory was 270.5MB in the beginning and 268.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 25.60ms. Allocated memory is still 331.4MB. Free memory was 268.4MB in the beginning and 267.2MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 378.44ms. Allocated memory is still 331.4MB. Free memory was 266.3MB in the beginning and 250.6MB in the end (delta: 15.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 1655.32ms. Allocated memory was 331.4MB in the beginning and 457.2MB in the end (delta: 125.8MB). Free memory was 250.5MB in the beginning and 414.0MB in the end (delta: -163.6MB). There was no memory consumed. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.1s, 41 PlacesBefore, 12 PlacesAfterwards, 37 TransitionsBefore, 8 TransitionsAfterwards, 156 CoEnabledTransitionPairs, 6 FixpointIterations, 16 TrivialSequentialCompositions, 13 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 29 TotalNumberOfCompositions, 306 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 187, independent: 135, independent conditional: 0, independent unconditional: 135, dependent: 52, dependent conditional: 0, dependent unconditional: 52, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 88, independent: 76, independent conditional: 0, independent unconditional: 76, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 187, independent: 59, independent conditional: 0, independent unconditional: 59, dependent: 40, dependent conditional: 0, dependent unconditional: 40, unknown: 88, unknown conditional: 0, unknown unconditional: 88] , Statistics on independence cache: Total cache size (in pairs): 9, Positive cache size: 5, Positive conditional cache size: 0, Positive unconditional cache size: 5, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 738]: 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 3 procedures, 59 locations, 2 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: 1.6s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 11 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 35 IncrementalHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 1 mSDtfsCounter, 35 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=2, InterpolantAutomatonStates: 10, 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, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 19 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 26 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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! [2023-01-28 00:06:46,683 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...