/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-wmm/safe015_power.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 00:47:16,930 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 00:47:16,932 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 00:47:16,959 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-01-28 00:47:16,989 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 00:47:17,004 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 00:47:17,005 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 00:47:17,006 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 00:47:17,006 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 00:47:17,006 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 00:47:17,006 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 00:47:17,007 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 00:47:17,007 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 00:47:17,007 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 00:47:17,007 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 00:47:17,007 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 00:47:17,007 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 00:47:17,008 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 00:47:17,008 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 00:47:17,008 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 00:47:17,008 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 00:47:17,008 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 00:47:17,009 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 00:47:17,009 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 00:47:17,009 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 00:47:17,009 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 00:47:17,009 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 00:47:17,009 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 00:47:17,010 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 00:47:17,010 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 00:47:17,010 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 00:47:17,010 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 00:47:17,010 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 00:47:17,011 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 00:47:17,011 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 00:47:17,011 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 00:47:17,011 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-28 00:47:17,181 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 00:47:17,204 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 00:47:17,206 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 00:47:17,207 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 00:47:17,209 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 00:47:17,210 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe015_power.oepc.i [2023-01-28 00:47:18,337 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 00:47:18,608 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 00:47:18,612 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe015_power.oepc.i [2023-01-28 00:47:18,632 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ccdb936e/e5828af6b0764326b9404bce993cc572/FLAG7f3089bfb [2023-01-28 00:47:18,642 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ccdb936e/e5828af6b0764326b9404bce993cc572 [2023-01-28 00:47:18,644 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 00:47:18,645 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 00:47:18,646 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 00:47:18,646 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 00:47:18,649 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 00:47:18,649 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 12:47:18" (1/1) ... [2023-01-28 00:47:18,650 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d217453 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:47:18, skipping insertion in model container [2023-01-28 00:47:18,650 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 12:47:18" (1/1) ... [2023-01-28 00:47:18,654 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 00:47:18,702 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 00:47:18,817 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-wmm/safe015_power.oepc.i[995,1008] [2023-01-28 00:47:19,027 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 00:47:19,042 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 00:47:19,052 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-wmm/safe015_power.oepc.i[995,1008] [2023-01-28 00:47:19,114 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 00:47:19,149 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 00:47:19,149 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 00:47:19,155 INFO L208 MainTranslator]: Completed translation [2023-01-28 00:47:19,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:47:19 WrapperNode [2023-01-28 00:47:19,156 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 00:47:19,157 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 00:47:19,157 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 00:47:19,157 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 00:47:19,163 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:47:19" (1/1) ... [2023-01-28 00:47:19,194 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:47:19" (1/1) ... [2023-01-28 00:47:19,237 INFO L138 Inliner]: procedures = 176, calls = 86, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 228 [2023-01-28 00:47:19,237 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 00:47:19,238 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 00:47:19,238 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 00:47:19,238 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 00:47:19,246 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:47:19" (1/1) ... [2023-01-28 00:47:19,246 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:47:19" (1/1) ... [2023-01-28 00:47:19,261 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:47:19" (1/1) ... [2023-01-28 00:47:19,262 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:47:19" (1/1) ... [2023-01-28 00:47:19,280 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:47:19" (1/1) ... [2023-01-28 00:47:19,282 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:47:19" (1/1) ... [2023-01-28 00:47:19,284 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:47:19" (1/1) ... [2023-01-28 00:47:19,286 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:47:19" (1/1) ... [2023-01-28 00:47:19,298 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 00:47:19,299 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 00:47:19,299 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 00:47:19,299 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 00:47:19,300 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:47:19" (1/1) ... [2023-01-28 00:47:19,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 00:47:19,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 00:47:19,331 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 00:47:19,332 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 00:47:19,357 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 00:47:19,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 00:47:19,357 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 00:47:19,357 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 00:47:19,357 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 00:47:19,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 00:47:19,357 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-01-28 00:47:19,358 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-01-28 00:47:19,358 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-01-28 00:47:19,358 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-01-28 00:47:19,358 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-01-28 00:47:19,358 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-01-28 00:47:19,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 00:47:19,358 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 00:47:19,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 00:47:19,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 00:47:19,360 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 00:47:19,576 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 00:47:19,578 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 00:47:20,047 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 00:47:20,412 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 00:47:20,412 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-01-28 00:47:20,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 12:47:20 BoogieIcfgContainer [2023-01-28 00:47:20,414 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 00:47:20,416 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 00:47:20,416 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 00:47:20,419 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 00:47:20,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 12:47:18" (1/3) ... [2023-01-28 00:47:20,420 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fd99434 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 12:47:20, skipping insertion in model container [2023-01-28 00:47:20,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:47:19" (2/3) ... [2023-01-28 00:47:20,421 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fd99434 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 12:47:20, skipping insertion in model container [2023-01-28 00:47:20,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 12:47:20" (3/3) ... [2023-01-28 00:47:20,422 INFO L112 eAbstractionObserver]: Analyzing ICFG safe015_power.oepc.i [2023-01-28 00:47:20,438 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 00:47:20,438 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-01-28 00:47:20,438 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 00:47:20,519 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 00:47:20,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 134 places, 126 transitions, 267 flow [2023-01-28 00:47:20,620 INFO L130 PetriNetUnfolder]: 2/123 cut-off events. [2023-01-28 00:47:20,620 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 00:47:20,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133 conditions, 123 events. 2/123 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 56 event pairs, 0 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2023-01-28 00:47:20,626 INFO L82 GeneralOperation]: Start removeDead. Operand has 134 places, 126 transitions, 267 flow [2023-01-28 00:47:20,636 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 131 places, 123 transitions, 255 flow [2023-01-28 00:47:20,640 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 00:47:20,659 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 131 places, 123 transitions, 255 flow [2023-01-28 00:47:20,661 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 131 places, 123 transitions, 255 flow [2023-01-28 00:47:20,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 131 places, 123 transitions, 255 flow [2023-01-28 00:47:20,706 INFO L130 PetriNetUnfolder]: 2/123 cut-off events. [2023-01-28 00:47:20,706 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 00:47:20,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133 conditions, 123 events. 2/123 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 56 event pairs, 0 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2023-01-28 00:47:20,710 INFO L119 LiptonReduction]: Number of co-enabled transitions 1888 [2023-01-28 00:47:28,639 INFO L134 LiptonReduction]: Checked pairs total: 5236 [2023-01-28 00:47:28,639 INFO L136 LiptonReduction]: Total number of compositions: 109 [2023-01-28 00:47:28,651 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 00:47:28,656 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;@24d43220, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 00:47:28,656 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-01-28 00:47:28,659 INFO L130 PetriNetUnfolder]: 0/7 cut-off events. [2023-01-28 00:47:28,660 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 00:47:28,660 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:47:28,660 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-01-28 00:47:28,661 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-01-28 00:47:28,664 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:47:28,665 INFO L85 PathProgramCache]: Analyzing trace with hash 934748511, now seen corresponding path program 1 times [2023-01-28 00:47:28,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:47:28,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234857660] [2023-01-28 00:47:28,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:47:28,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:47:28,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:47:29,068 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 00:47:29,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:47:29,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234857660] [2023-01-28 00:47:29,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234857660] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:47:29,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:47:29,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-28 00:47:29,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680053209] [2023-01-28 00:47:29,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:47:29,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 00:47:29,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:47:29,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 00:47:29,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 00:47:29,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 235 [2023-01-28 00:47:29,110 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 25 transitions, 59 flow. Second operand has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 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 00:47:29,111 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:47:29,111 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 235 [2023-01-28 00:47:29,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:47:29,646 INFO L130 PetriNetUnfolder]: 1331/1972 cut-off events. [2023-01-28 00:47:29,647 INFO L131 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2023-01-28 00:47:29,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3999 conditions, 1972 events. 1331/1972 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 9403 event pairs, 141 based on Foata normal form. 0/1768 useless extension candidates. Maximal degree in co-relation 3988. Up to 1711 conditions per place. [2023-01-28 00:47:29,663 INFO L137 encePairwiseOnDemand]: 231/235 looper letters, 33 selfloop transitions, 2 changer transitions 0/36 dead transitions. [2023-01-28 00:47:29,664 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 36 transitions, 154 flow [2023-01-28 00:47:29,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 00:47:29,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 00:47:29,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 365 transitions. [2023-01-28 00:47:29,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5177304964539007 [2023-01-28 00:47:29,680 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 365 transitions. [2023-01-28 00:47:29,681 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 365 transitions. [2023-01-28 00:47:29,683 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:47:29,686 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 365 transitions. [2023-01-28 00:47:29,691 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 121.66666666666667) internal successors, (365), 3 states have internal predecessors, (365), 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 00:47:29,696 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 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 00:47:29,697 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 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 00:47:29,698 INFO L175 Difference]: Start difference. First operand has 34 places, 25 transitions, 59 flow. Second operand 3 states and 365 transitions. [2023-01-28 00:47:29,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 36 transitions, 154 flow [2023-01-28 00:47:29,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 36 transitions, 150 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-01-28 00:47:29,703 INFO L231 Difference]: Finished difference. Result has 32 places, 23 transitions, 56 flow [2023-01-28 00:47:29,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=32, PETRI_TRANSITIONS=23} [2023-01-28 00:47:29,709 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -2 predicate places. [2023-01-28 00:47:29,710 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 23 transitions, 56 flow [2023-01-28 00:47:29,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 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 00:47:29,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:47:29,710 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-01-28 00:47:29,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 00:47:29,711 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P1Err1ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-01-28 00:47:29,713 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:47:29,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1087566374, now seen corresponding path program 1 times [2023-01-28 00:47:29,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:47:29,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153149584] [2023-01-28 00:47:29,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:47:29,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:47:29,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 00:47:29,777 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 00:47:29,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 00:47:29,816 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 00:47:29,816 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 00:47:29,818 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location P1Err1ASSERT_VIOLATIONERROR_FUNCTION (7 of 8 remaining) [2023-01-28 00:47:29,819 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (6 of 8 remaining) [2023-01-28 00:47:29,819 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err1ASSERT_VIOLATIONERROR_FUNCTION (5 of 8 remaining) [2023-01-28 00:47:29,819 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 8 remaining) [2023-01-28 00:47:29,820 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 8 remaining) [2023-01-28 00:47:29,820 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 8 remaining) [2023-01-28 00:47:29,820 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 8 remaining) [2023-01-28 00:47:29,820 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 8 remaining) [2023-01-28 00:47:29,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 00:47:29,821 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-01-28 00:47:29,825 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 00:47:29,826 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 00:47:29,876 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 12:47:29 BasicIcfg [2023-01-28 00:47:29,876 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 00:47:29,877 INFO L158 Benchmark]: Toolchain (without parser) took 11231.64ms. Allocated memory was 356.5MB in the beginning and 427.8MB in the end (delta: 71.3MB). Free memory was 315.4MB in the beginning and 383.7MB in the end (delta: -68.3MB). Peak memory consumption was 5.0MB. Max. memory is 16.0GB. [2023-01-28 00:47:29,877 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 255.9MB. Free memory is still 213.5MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 00:47:29,877 INFO L158 Benchmark]: CACSL2BoogieTranslator took 510.26ms. Allocated memory is still 356.5MB. Free memory was 315.4MB in the beginning and 288.6MB in the end (delta: 26.8MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. [2023-01-28 00:47:29,878 INFO L158 Benchmark]: Boogie Procedure Inliner took 80.50ms. Allocated memory is still 356.5MB. Free memory was 288.6MB in the beginning and 285.6MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 00:47:29,878 INFO L158 Benchmark]: Boogie Preprocessor took 60.32ms. Allocated memory is still 356.5MB. Free memory was 285.6MB in the beginning and 283.0MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 00:47:29,879 INFO L158 Benchmark]: RCFGBuilder took 1114.95ms. Allocated memory is still 356.5MB. Free memory was 283.0MB in the beginning and 255.6MB in the end (delta: 27.4MB). Peak memory consumption was 43.0MB. Max. memory is 16.0GB. [2023-01-28 00:47:29,879 INFO L158 Benchmark]: TraceAbstraction took 9459.79ms. Allocated memory was 356.5MB in the beginning and 427.8MB in the end (delta: 71.3MB). Free memory was 254.6MB in the beginning and 383.7MB in the end (delta: -129.1MB). There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 00:47:29,881 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 255.9MB. Free memory is still 213.5MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 510.26ms. Allocated memory is still 356.5MB. Free memory was 315.4MB in the beginning and 288.6MB in the end (delta: 26.8MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 80.50ms. Allocated memory is still 356.5MB. Free memory was 288.6MB in the beginning and 285.6MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 60.32ms. Allocated memory is still 356.5MB. Free memory was 285.6MB in the beginning and 283.0MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 1114.95ms. Allocated memory is still 356.5MB. Free memory was 283.0MB in the beginning and 255.6MB in the end (delta: 27.4MB). Peak memory consumption was 43.0MB. Max. memory is 16.0GB. * TraceAbstraction took 9459.79ms. Allocated memory was 356.5MB in the beginning and 427.8MB in the end (delta: 71.3MB). Free memory was 254.6MB in the beginning and 383.7MB in the end (delta: -129.1MB). 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: 8.0s, 131 PlacesBefore, 34 PlacesAfterwards, 123 TransitionsBefore, 25 TransitionsAfterwards, 1888 CoEnabledTransitionPairs, 7 FixpointIterations, 56 TrivialSequentialCompositions, 44 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 109 TotalNumberOfCompositions, 5236 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1781, independent: 1589, independent conditional: 0, independent unconditional: 1589, dependent: 192, dependent conditional: 0, dependent unconditional: 192, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1027, independent: 976, independent conditional: 0, independent unconditional: 976, dependent: 51, dependent conditional: 0, dependent unconditional: 51, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1781, independent: 613, independent conditional: 0, independent unconditional: 613, dependent: 141, dependent conditional: 0, dependent unconditional: 141, unknown: 1027, unknown conditional: 0, unknown unconditional: 1027] , Statistics on independence cache: Total cache size (in pairs): 62, Positive cache size: 46, Positive conditional cache size: 0, Positive unconditional cache size: 46, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 19]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L710] 0 int __unbuffered_cnt = 0; [L712] 0 int __unbuffered_p0_EAX = 0; [L714] 0 int __unbuffered_p2_EAX = 0; [L715] 0 _Bool __unbuffered_p2_EAX$flush_delayed; [L716] 0 int __unbuffered_p2_EAX$mem_tmp; [L717] 0 _Bool __unbuffered_p2_EAX$r_buff0_thd0; [L718] 0 _Bool __unbuffered_p2_EAX$r_buff0_thd1; [L719] 0 _Bool __unbuffered_p2_EAX$r_buff0_thd2; [L720] 0 _Bool __unbuffered_p2_EAX$r_buff0_thd3; [L721] 0 _Bool __unbuffered_p2_EAX$r_buff1_thd0; [L722] 0 _Bool __unbuffered_p2_EAX$r_buff1_thd1; [L723] 0 _Bool __unbuffered_p2_EAX$r_buff1_thd2; [L724] 0 _Bool __unbuffered_p2_EAX$r_buff1_thd3; [L725] 0 _Bool __unbuffered_p2_EAX$read_delayed; [L726] 0 int *__unbuffered_p2_EAX$read_delayed_var; [L727] 0 int __unbuffered_p2_EAX$w_buff0; [L728] 0 _Bool __unbuffered_p2_EAX$w_buff0_used; [L729] 0 int __unbuffered_p2_EAX$w_buff1; [L730] 0 _Bool __unbuffered_p2_EAX$w_buff1_used; [L731] 0 _Bool main$tmp_guard0; [L732] 0 _Bool main$tmp_guard1; [L734] 0 int x = 0; [L735] 0 _Bool x$flush_delayed; [L736] 0 int x$mem_tmp; [L737] 0 _Bool x$r_buff0_thd0; [L738] 0 _Bool x$r_buff0_thd1; [L739] 0 _Bool x$r_buff0_thd2; [L740] 0 _Bool x$r_buff0_thd3; [L741] 0 _Bool x$r_buff1_thd0; [L742] 0 _Bool x$r_buff1_thd1; [L743] 0 _Bool x$r_buff1_thd2; [L744] 0 _Bool x$r_buff1_thd3; [L745] 0 _Bool x$read_delayed; [L746] 0 int *x$read_delayed_var; [L747] 0 int x$w_buff0; [L748] 0 _Bool x$w_buff0_used; [L749] 0 int x$w_buff1; [L750] 0 _Bool x$w_buff1_used; [L752] 0 int y = 0; [L753] 0 _Bool weak$$choice0; [L754] 0 _Bool weak$$choice1; [L755] 0 _Bool weak$$choice2; [L871] 0 pthread_t t2121; [L872] FCALL, FORK 0 pthread_create(&t2121, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p2_EAX$flush_delayed=0, __unbuffered_p2_EAX$mem_tmp=0, __unbuffered_p2_EAX$r_buff0_thd0=0, __unbuffered_p2_EAX$r_buff0_thd1=0, __unbuffered_p2_EAX$r_buff0_thd2=0, __unbuffered_p2_EAX$r_buff0_thd3=0, __unbuffered_p2_EAX$r_buff1_thd0=0, __unbuffered_p2_EAX$r_buff1_thd1=0, __unbuffered_p2_EAX$r_buff1_thd2=0, __unbuffered_p2_EAX$r_buff1_thd3=0, __unbuffered_p2_EAX$read_delayed=0, __unbuffered_p2_EAX$read_delayed_var={0:0}, __unbuffered_p2_EAX$w_buff0=0, __unbuffered_p2_EAX$w_buff0_used=0, __unbuffered_p2_EAX$w_buff1=0, __unbuffered_p2_EAX$w_buff1_used=0, __unbuffered_p2_EAX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t2121, ((void *)0), P0, ((void *)0))=-1, t2121={6:0}, weak$$choice0=0, weak$$choice1=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x={3:0}, y=0] [L873] 0 pthread_t t2122; [L874] FCALL, FORK 0 pthread_create(&t2122, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p2_EAX$flush_delayed=0, __unbuffered_p2_EAX$mem_tmp=0, __unbuffered_p2_EAX$r_buff0_thd0=0, __unbuffered_p2_EAX$r_buff0_thd1=0, __unbuffered_p2_EAX$r_buff0_thd2=0, __unbuffered_p2_EAX$r_buff0_thd3=0, __unbuffered_p2_EAX$r_buff1_thd0=0, __unbuffered_p2_EAX$r_buff1_thd1=0, __unbuffered_p2_EAX$r_buff1_thd2=0, __unbuffered_p2_EAX$r_buff1_thd3=0, __unbuffered_p2_EAX$read_delayed=0, __unbuffered_p2_EAX$read_delayed_var={0:0}, __unbuffered_p2_EAX$w_buff0=0, __unbuffered_p2_EAX$w_buff0_used=0, __unbuffered_p2_EAX$w_buff1=0, __unbuffered_p2_EAX$w_buff1_used=0, __unbuffered_p2_EAX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t2122, ((void *)0), P1, ((void *)0))=0, t2121={6:0}, t2122={5:0}, weak$$choice0=0, weak$$choice1=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x={3:0}, y=0] [L789] 2 x$w_buff1 = x$w_buff0 [L790] 2 x$w_buff0 = 1 [L791] 2 x$w_buff1_used = x$w_buff0_used [L792] 2 x$w_buff0_used = (_Bool)1 [L793] CALL 2 __VERIFIER_assert(!(x$w_buff1_used && x$w_buff0_used)) [L19] COND FALSE 2 !(!expression) [L793] RET 2 __VERIFIER_assert(!(x$w_buff1_used && x$w_buff0_used)) [L794] 2 x$r_buff1_thd0 = x$r_buff0_thd0 [L795] 2 x$r_buff1_thd1 = x$r_buff0_thd1 [L796] 2 x$r_buff1_thd2 = x$r_buff0_thd2 [L797] 2 x$r_buff1_thd3 = x$r_buff0_thd3 [L798] 2 x$r_buff0_thd2 = (_Bool)1 VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p2_EAX$flush_delayed=0, __unbuffered_p2_EAX$mem_tmp=0, __unbuffered_p2_EAX$r_buff0_thd0=0, __unbuffered_p2_EAX$r_buff0_thd1=0, __unbuffered_p2_EAX$r_buff0_thd2=0, __unbuffered_p2_EAX$r_buff0_thd3=0, __unbuffered_p2_EAX$r_buff1_thd0=0, __unbuffered_p2_EAX$r_buff1_thd1=0, __unbuffered_p2_EAX$r_buff1_thd2=0, __unbuffered_p2_EAX$r_buff1_thd3=0, __unbuffered_p2_EAX$read_delayed=0, __unbuffered_p2_EAX$read_delayed_var={0:0}, __unbuffered_p2_EAX$w_buff0=0, __unbuffered_p2_EAX$w_buff0_used=0, __unbuffered_p2_EAX$w_buff1=0, __unbuffered_p2_EAX$w_buff1_used=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice1=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=1, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, x={3:0}, y=0] [L801] 2 x$w_buff1 = x$w_buff0 [L802] 2 x$w_buff0 = 2 [L803] 2 x$w_buff1_used = x$w_buff0_used [L804] 2 x$w_buff0_used = (_Bool)1 [L805] CALL 2 __VERIFIER_assert(!(x$w_buff1_used && x$w_buff0_used)) [L19] COND TRUE 2 !expression [L19] 2 reach_error() VAL [\old(expression)=0, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p2_EAX$flush_delayed=0, __unbuffered_p2_EAX$mem_tmp=0, __unbuffered_p2_EAX$r_buff0_thd0=0, __unbuffered_p2_EAX$r_buff0_thd1=0, __unbuffered_p2_EAX$r_buff0_thd2=0, __unbuffered_p2_EAX$r_buff0_thd3=0, __unbuffered_p2_EAX$r_buff1_thd0=0, __unbuffered_p2_EAX$r_buff1_thd1=0, __unbuffered_p2_EAX$r_buff1_thd2=0, __unbuffered_p2_EAX$r_buff1_thd3=0, __unbuffered_p2_EAX$read_delayed=0, __unbuffered_p2_EAX$read_delayed_var={0:0}, __unbuffered_p2_EAX$w_buff0=0, __unbuffered_p2_EAX$w_buff0_used=0, __unbuffered_p2_EAX$w_buff1=0, __unbuffered_p2_EAX$w_buff1_used=0, __unbuffered_p2_EAX=0, arg={0:0}, expression=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice1=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=1, x$w_buff1_used=1, x={3:0}, y=0] - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 874]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 876]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 872]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 153 locations, 8 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: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 8.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 8 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 40 IncrementalHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 0 mSDtfsCounter, 40 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=59occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 28 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 RESULT: Ultimate proved your program to be incorrect! [2023-01-28 00:47:29,912 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...