/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 -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.pointer.base.address.is.valid.at.dereference ASSERTandASSUME --cacsl2boogietranslator.pointer.to.allocated.memory.at.dereference ASSERTandASSUME --cacsl2boogietranslator.check.array.bounds.for.arrays.that.are.off.heap ASSERTandASSUME --cacsl2boogietranslator.check.if.freed.pointer.was.valid true --cacsl2boogietranslator.adapt.memory.model.on.pointer.casts.if.necessary true -i ../../../trunk/examples/svcomp/goblint-regression/04-mutex_43-thread_create_nr.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 12:23:01,311 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 12:23:01,386 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-26 12:23:01,389 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 12:23:01,390 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 12:23:01,410 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 12:23:01,411 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 12:23:01,411 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 12:23:01,412 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 12:23:01,414 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 12:23:01,414 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 12:23:01,415 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 12:23:01,415 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 12:23:01,416 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 12:23:01,416 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 12:23:01,416 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 12:23:01,416 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 12:23:01,416 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 12:23:01,416 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 12:23:01,417 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 12:23:01,417 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 12:23:01,417 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 12:23:01,418 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 12:23:01,418 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 12:23:01,418 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 12:23:01,418 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 12:23:01,418 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 12:23:01,419 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 12:23:01,419 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 12:23:01,419 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 12:23:01,420 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 12:23:01,420 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 12:23:01,420 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 12:23:01,420 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 12:23:01,420 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 12:23:01,420 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-08-26 12:23:01,684 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 12:23:01,699 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 12:23:01,701 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 12:23:01,702 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 12:23:01,702 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 12:23:01,703 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/04-mutex_43-thread_create_nr.i [2023-08-26 12:23:02,761 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 12:23:02,986 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 12:23:02,986 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/04-mutex_43-thread_create_nr.i [2023-08-26 12:23:02,998 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2d463ece/7c789b57569342518c17fc525913c91d/FLAGa5f77d363 [2023-08-26 12:23:03,015 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2d463ece/7c789b57569342518c17fc525913c91d [2023-08-26 12:23:03,017 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 12:23:03,018 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 12:23:03,019 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 12:23:03,019 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 12:23:03,021 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 12:23:03,021 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 12:23:03" (1/1) ... [2023-08-26 12:23:03,022 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20d33562 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:23:03, skipping insertion in model container [2023-08-26 12:23:03,022 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 12:23:03" (1/1) ... [2023-08-26 12:23:03,051 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 12:23:03,312 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 12:23:03,324 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 12:23:03,345 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-26 12:23:03,346 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-26 12:23:03,351 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [736] [2023-08-26 12:23:03,364 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 12:23:03,415 INFO L206 MainTranslator]: Completed translation [2023-08-26 12:23:03,420 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:23:03 WrapperNode [2023-08-26 12:23:03,421 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 12:23:03,422 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 12:23:03,422 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 12:23:03,422 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 12:23:03,426 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:23:03" (1/1) ... [2023-08-26 12:23:03,451 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:23:03" (1/1) ... [2023-08-26 12:23:03,466 INFO L138 Inliner]: procedures = 262, calls = 14, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 40 [2023-08-26 12:23:03,466 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 12:23:03,467 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 12:23:03,467 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 12:23:03,467 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 12:23:03,472 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:23:03" (1/1) ... [2023-08-26 12:23:03,472 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:23:03" (1/1) ... [2023-08-26 12:23:03,481 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:23:03" (1/1) ... [2023-08-26 12:23:03,481 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:23:03" (1/1) ... [2023-08-26 12:23:03,489 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:23:03" (1/1) ... [2023-08-26 12:23:03,490 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:23:03" (1/1) ... [2023-08-26 12:23:03,491 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:23:03" (1/1) ... [2023-08-26 12:23:03,491 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:23:03" (1/1) ... [2023-08-26 12:23:03,493 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 12:23:03,493 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 12:23:03,493 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 12:23:03,493 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 12:23:03,494 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:23:03" (1/1) ... [2023-08-26 12:23:03,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 12:23:03,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 12:23:03,555 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-26 12:23:03,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-26 12:23:03,648 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 12:23:03,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 12:23:03,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 12:23:03,649 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-26 12:23:03,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 12:23:03,649 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-26 12:23:03,649 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-26 12:23:03,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 12:23:03,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 12:23:03,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 12:23:03,651 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-26 12:23:03,755 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 12:23:03,756 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 12:23:03,890 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 12:23:03,894 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 12:23:03,894 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-26 12:23:03,895 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 12:23:03 BoogieIcfgContainer [2023-08-26 12:23:03,895 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 12:23:03,897 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 12:23:03,897 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 12:23:03,899 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 12:23:03,899 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 12:23:03" (1/3) ... [2023-08-26 12:23:03,900 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6496e644 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 12:23:03, skipping insertion in model container [2023-08-26 12:23:03,900 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:23:03" (2/3) ... [2023-08-26 12:23:03,900 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6496e644 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 12:23:03, skipping insertion in model container [2023-08-26 12:23:03,900 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 12:23:03" (3/3) ... [2023-08-26 12:23:03,901 INFO L112 eAbstractionObserver]: Analyzing ICFG 04-mutex_43-thread_create_nr.i [2023-08-26 12:23:03,914 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 12:23:03,914 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-26 12:23:03,915 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 12:23:03,959 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-26 12:23:03,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 50 transitions, 105 flow [2023-08-26 12:23:04,020 INFO L124 PetriNetUnfolderBase]: 0/49 cut-off events. [2023-08-26 12:23:04,021 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 12:23:04,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 49 events. 0/49 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. 0/47 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2023-08-26 12:23:04,023 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 50 transitions, 105 flow [2023-08-26 12:23:04,026 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 30 transitions, 60 flow [2023-08-26 12:23:04,029 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 12:23:04,039 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 31 places, 30 transitions, 60 flow [2023-08-26 12:23:04,042 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 31 places, 30 transitions, 60 flow [2023-08-26 12:23:04,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 31 places, 30 transitions, 60 flow [2023-08-26 12:23:04,052 INFO L124 PetriNetUnfolderBase]: 0/30 cut-off events. [2023-08-26 12:23:04,052 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 12:23:04,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 30 events. 0/30 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 1 event pairs, 0 based on Foata normal form. 0/29 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2023-08-26 12:23:04,052 INFO L119 LiptonReduction]: Number of co-enabled transitions 0 [2023-08-26 12:23:04,867 INFO L134 LiptonReduction]: Checked pairs total: 0 [2023-08-26 12:23:04,867 INFO L136 LiptonReduction]: Total number of compositions: 32 [2023-08-26 12:23:04,876 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 12:23:04,880 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;@636223b2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 12:23:04,880 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-26 12:23:04,881 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 12:23:04,881 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-26 12:23:04,881 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 12:23:04,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:23:04,882 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-26 12:23:04,882 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 12:23:04,885 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:23:04,885 INFO L85 PathProgramCache]: Analyzing trace with hash 170, now seen corresponding path program 1 times [2023-08-26 12:23:04,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:23:04,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288022250] [2023-08-26 12:23:04,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:23:04,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:23:04,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:23:04,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:23:04,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:23:04,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288022250] [2023-08-26 12:23:04,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288022250] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:23:04,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:23:04,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-26 12:23:04,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003416121] [2023-08-26 12:23:04,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:23:04,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-26 12:23:04,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:23:04,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-26 12:23:04,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-26 12:23:04,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 82 [2023-08-26 12:23:04,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 3 places, 2 transitions, 4 flow. Second operand has 2 states, 2 states have (on average 49.5) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:23:04,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:23:04,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 82 [2023-08-26 12:23:04,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:23:04,984 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-26 12:23:04,984 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 12:23:04,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2 conditions, 0 events. 0/0 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 0. Compared 0 event pairs, 0 based on Foata normal form. 1/1 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2023-08-26 12:23:04,985 INFO L140 encePairwiseOnDemand]: 80/82 looper letters, 0 selfloop transitions, 0 changer transitions 0/0 dead transitions. [2023-08-26 12:23:04,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2 places, 0 transitions, 0 flow [2023-08-26 12:23:04,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-26 12:23:04,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-26 12:23:04,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 100 transitions. [2023-08-26 12:23:04,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6097560975609756 [2023-08-26 12:23:04,992 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 100 transitions. [2023-08-26 12:23:04,992 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 100 transitions. [2023-08-26 12:23:04,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:23:04,994 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 100 transitions. [2023-08-26 12:23:04,995 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 50.0) internal successors, (100), 2 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:23:05,002 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:23:05,002 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:23:05,003 INFO L175 Difference]: Start difference. First operand has 3 places, 2 transitions, 4 flow. Second operand 2 states and 100 transitions. [2023-08-26 12:23:05,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 2 places, 0 transitions, 0 flow [2023-08-26 12:23:05,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 2 places, 0 transitions, 0 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 12:23:05,005 INFO L231 Difference]: Finished difference. Result has 2 places, 0 transitions, 0 flow [2023-08-26 12:23:05,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=0, PETRI_DIFFERENCE_MINUEND_PLACES=1, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=0, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=0, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=0, PETRI_PLACES=2, PETRI_TRANSITIONS=0} [2023-08-26 12:23:05,010 INFO L281 CegarLoopForPetriNet]: 3 programPoint places, -1 predicate places. [2023-08-26 12:23:05,011 INFO L495 AbstractCegarLoop]: Abstraction has has 2 places, 0 transitions, 0 flow [2023-08-26 12:23:05,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 49.5) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:23:05,013 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 3 remaining) [2023-08-26 12:23:05,014 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 3 remaining) [2023-08-26 12:23:05,014 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-26 12:23:05,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 12:23:05,014 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 12:23:05,024 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-26 12:23:05,025 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-26 12:23:05,027 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 12:23:05 BasicIcfg [2023-08-26 12:23:05,027 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-26 12:23:05,028 INFO L158 Benchmark]: Toolchain (without parser) took 2009.72ms. Allocated memory is still 385.9MB. Free memory was 360.0MB in the beginning and 343.3MB in the end (delta: 16.7MB). Peak memory consumption was 18.7MB. Max. memory is 16.0GB. [2023-08-26 12:23:05,028 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 255.9MB. Free memory is still 238.4MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 12:23:05,028 INFO L158 Benchmark]: CACSL2BoogieTranslator took 402.16ms. Allocated memory is still 385.9MB. Free memory was 360.0MB in the beginning and 332.9MB in the end (delta: 27.1MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. [2023-08-26 12:23:05,029 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.73ms. Allocated memory is still 385.9MB. Free memory was 332.9MB in the beginning and 330.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 12:23:05,029 INFO L158 Benchmark]: Boogie Preprocessor took 25.44ms. Allocated memory is still 385.9MB. Free memory was 330.8MB in the beginning and 329.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 12:23:05,029 INFO L158 Benchmark]: RCFGBuilder took 402.43ms. Allocated memory is still 385.9MB. Free memory was 329.2MB in the beginning and 361.3MB in the end (delta: -32.1MB). Peak memory consumption was 15.8MB. Max. memory is 16.0GB. [2023-08-26 12:23:05,030 INFO L158 Benchmark]: TraceAbstraction took 1130.40ms. Allocated memory is still 385.9MB. Free memory was 360.4MB in the beginning and 343.3MB in the end (delta: 17.1MB). Peak memory consumption was 17.6MB. Max. memory is 16.0GB. [2023-08-26 12:23:05,031 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 255.9MB. Free memory is still 238.4MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 402.16ms. Allocated memory is still 385.9MB. Free memory was 360.0MB in the beginning and 332.9MB in the end (delta: 27.1MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 44.73ms. Allocated memory is still 385.9MB. Free memory was 332.9MB in the beginning and 330.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 25.44ms. Allocated memory is still 385.9MB. Free memory was 330.8MB in the beginning and 329.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 402.43ms. Allocated memory is still 385.9MB. Free memory was 329.2MB in the beginning and 361.3MB in the end (delta: -32.1MB). Peak memory consumption was 15.8MB. Max. memory is 16.0GB. * TraceAbstraction took 1130.40ms. Allocated memory is still 385.9MB. Free memory was 360.4MB in the beginning and 343.3MB in the end (delta: 17.1MB). Peak memory consumption was 17.6MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 244]: Unsoundness Warning unspecified type, defaulting to int C: short [244] - GenericResultAtLocation [Line: 244]: Unsoundness Warning unspecified type, defaulting to int C: short [244] - GenericResultAtLocation [Line: 736]: Unsoundness Warning unspecified type, defaulting to int C: unsigned short [736] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.8s, 31 PlacesBefore, 3 PlacesAfterwards, 30 TransitionsBefore, 2 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 6 FixpointIterations, 32 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 32 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 60 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.0s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 0 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4occurred in iteration=0, InterpolantAutomatonStates: 2, 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, 0.0s InterpolantComputationTime, 1 NumberOfCodeBlocks, 1 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 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 - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-26 12:23:05,053 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...