/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/pthread/singleton.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 09:24:24,771 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 09:24:24,848 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 [2023-08-27 09:24:24,853 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 09:24:24,854 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 09:24:24,886 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 09:24:24,887 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 09:24:24,887 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 09:24:24,888 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 09:24:24,891 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 09:24:24,891 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 09:24:24,891 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 09:24:24,892 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 09:24:24,893 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 09:24:24,893 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 09:24:24,893 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 09:24:24,893 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 09:24:24,894 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 09:24:24,894 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 09:24:24,894 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 09:24:24,894 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 09:24:24,895 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 09:24:24,895 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 09:24:24,896 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 09:24:24,896 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 09:24:24,896 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 09:24:24,896 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 09:24:24,896 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 09:24:24,897 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 09:24:24,897 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 09:24:24,898 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 09:24:24,898 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 09:24:24,898 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 09:24:24,898 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 09:24:24,898 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 09:24:24,899 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 09:24:25,221 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 09:24:25,237 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 09:24:25,239 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 09:24:25,240 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 09:24:25,240 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 09:24:25,243 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/singleton.i [2023-08-27 09:24:26,349 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 09:24:26,663 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 09:24:26,664 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/singleton.i [2023-08-27 09:24:26,681 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/308ed55b2/e9ecf61b55574961b3e5eeeabb791c17/FLAG6babe7b41 [2023-08-27 09:24:26,696 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/308ed55b2/e9ecf61b55574961b3e5eeeabb791c17 [2023-08-27 09:24:26,700 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 09:24:26,701 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 09:24:26,703 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 09:24:26,703 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 09:24:26,705 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 09:24:26,706 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 09:24:26" (1/1) ... [2023-08-27 09:24:26,706 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@121a05d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:24:26, skipping insertion in model container [2023-08-27 09:24:26,707 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 09:24:26" (1/1) ... [2023-08-27 09:24:26,759 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 09:24:26,945 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-27 09:24:27,224 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 09:24:27,233 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 09:24:27,253 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-27 09:24:27,256 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [283] [2023-08-27 09:24:27,258 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [283] [2023-08-27 09:24:27,283 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 09:24:27,358 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 09:24:27,358 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 09:24:27,359 WARN L669 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 09:24:27,364 INFO L206 MainTranslator]: Completed translation [2023-08-27 09:24:27,365 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:24:27 WrapperNode [2023-08-27 09:24:27,365 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 09:24:27,366 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 09:24:27,366 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 09:24:27,366 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 09:24:27,372 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:24:27" (1/1) ... [2023-08-27 09:24:27,402 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:24:27" (1/1) ... [2023-08-27 09:24:27,423 INFO L138 Inliner]: procedures = 325, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 38 [2023-08-27 09:24:27,424 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 09:24:27,425 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 09:24:27,425 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 09:24:27,425 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 09:24:27,432 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:24:27" (1/1) ... [2023-08-27 09:24:27,432 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:24:27" (1/1) ... [2023-08-27 09:24:27,449 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:24:27" (1/1) ... [2023-08-27 09:24:27,449 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:24:27" (1/1) ... [2023-08-27 09:24:27,455 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:24:27" (1/1) ... [2023-08-27 09:24:27,464 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:24:27" (1/1) ... [2023-08-27 09:24:27,465 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:24:27" (1/1) ... [2023-08-27 09:24:27,467 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:24:27" (1/1) ... [2023-08-27 09:24:27,478 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 09:24:27,478 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 09:24:27,479 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 09:24:27,479 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 09:24:27,481 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:24:27" (1/1) ... [2023-08-27 09:24:27,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 09:24:27,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 09:24:27,514 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) [2023-08-27 09:24:27,537 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 [2023-08-27 09:24:27,548 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-27 09:24:27,548 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 09:24:27,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 09:24:27,549 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-27 09:24:27,549 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 09:24:27,549 INFO L130 BoogieDeclarations]: Found specification of procedure thread0 [2023-08-27 09:24:27,549 INFO L138 BoogieDeclarations]: Found implementation of procedure thread0 [2023-08-27 09:24:27,549 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-27 09:24:27,549 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-27 09:24:27,549 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-27 09:24:27,550 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-27 09:24:27,551 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-27 09:24:27,551 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-27 09:24:27,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 09:24:27,552 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-27 09:24:27,552 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 09:24:27,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 09:24:27,552 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 09:24:27,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 09:24:27,554 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-27 09:24:27,673 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 09:24:27,675 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 09:24:27,900 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 09:24:27,906 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 09:24:27,906 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-27 09:24:27,908 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 09:24:27 BoogieIcfgContainer [2023-08-27 09:24:27,908 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 09:24:27,910 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 09:24:27,910 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 09:24:27,915 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 09:24:27,915 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 09:24:26" (1/3) ... [2023-08-27 09:24:27,916 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dadc3bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 09:24:27, skipping insertion in model container [2023-08-27 09:24:27,917 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:24:27" (2/3) ... [2023-08-27 09:24:27,917 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dadc3bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 09:24:27, skipping insertion in model container [2023-08-27 09:24:27,917 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 09:24:27" (3/3) ... [2023-08-27 09:24:27,918 INFO L112 eAbstractionObserver]: Analyzing ICFG singleton.i [2023-08-27 09:24:27,932 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 09:24:27,932 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-27 09:24:27,932 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 09:24:28,082 INFO L144 ThreadInstanceAdder]: Constructed 21 joinOtherThreadTransitions. [2023-08-27 09:24:28,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 201 places, 192 transitions, 491 flow [2023-08-27 09:24:28,195 INFO L124 PetriNetUnfolderBase]: 7/129 cut-off events. [2023-08-27 09:24:28,196 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-27 09:24:28,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159 conditions, 129 events. 7/129 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 61 event pairs, 0 based on Foata normal form. 0/121 useless extension candidates. Maximal degree in co-relation 113. Up to 3 conditions per place. [2023-08-27 09:24:28,200 INFO L82 GeneralOperation]: Start removeDead. Operand has 201 places, 192 transitions, 491 flow [2023-08-27 09:24:28,207 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 132 places, 118 transitions, 287 flow [2023-08-27 09:24:28,210 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 09:24:28,225 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 132 places, 118 transitions, 287 flow [2023-08-27 09:24:28,228 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 132 places, 118 transitions, 287 flow [2023-08-27 09:24:28,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 132 places, 118 transitions, 287 flow [2023-08-27 09:24:28,273 INFO L124 PetriNetUnfolderBase]: 5/118 cut-off events. [2023-08-27 09:24:28,273 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-27 09:24:28,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148 conditions, 118 events. 5/118 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 44 event pairs, 0 based on Foata normal form. 0/113 useless extension candidates. Maximal degree in co-relation 113. Up to 3 conditions per place. [2023-08-27 09:24:28,277 INFO L119 LiptonReduction]: Number of co-enabled transitions 1344 [2023-08-27 09:24:30,935 INFO L134 LiptonReduction]: Checked pairs total: 2923 [2023-08-27 09:24:30,936 INFO L136 LiptonReduction]: Total number of compositions: 77 [2023-08-27 09:24:30,946 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 09:24:30,951 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;@51f3f18d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 09:24:30,951 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-08-27 09:24:30,959 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 09:24:30,959 INFO L124 PetriNetUnfolderBase]: 5/40 cut-off events. [2023-08-27 09:24:30,959 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-27 09:24:30,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:24:30,960 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:24:30,961 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread0Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread0Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread0Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2023-08-27 09:24:30,964 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:24:30,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1772502243, now seen corresponding path program 1 times [2023-08-27 09:24:30,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:24:30,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620342993] [2023-08-27 09:24:30,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:24:30,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:24:31,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 09:24:31,183 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 09:24:31,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 09:24:31,286 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 09:24:31,287 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 09:24:31,288 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (11 of 12 remaining) [2023-08-27 09:24:31,289 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 12 remaining) [2023-08-27 09:24:31,289 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 12 remaining) [2023-08-27 09:24:31,290 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 12 remaining) [2023-08-27 09:24:31,290 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err8INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 12 remaining) [2023-08-27 09:24:31,290 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 12 remaining) [2023-08-27 09:24:31,290 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 12 remaining) [2023-08-27 09:24:31,290 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Thread1of1ForFork4Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 12 remaining) [2023-08-27 09:24:31,291 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Thread1of1ForFork4Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 12 remaining) [2023-08-27 09:24:31,291 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Thread1of1ForFork4Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 12 remaining) [2023-08-27 09:24:31,291 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Thread1of1ForFork4Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 12 remaining) [2023-08-27 09:24:31,291 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Thread1of1ForFork4Err10INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 12 remaining) [2023-08-27 09:24:31,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 09:24:31,292 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 09:24:31,298 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 09:24:31,299 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 09:24:31,406 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 09:24:31 BasicIcfg [2023-08-27 09:24:31,406 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 09:24:31,408 INFO L158 Benchmark]: Toolchain (without parser) took 4705.34ms. Allocated memory was 358.6MB in the beginning and 444.6MB in the end (delta: 86.0MB). Free memory was 332.9MB in the beginning and 326.3MB in the end (delta: 6.7MB). Peak memory consumption was 94.0MB. Max. memory is 16.0GB. [2023-08-27 09:24:31,411 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 358.6MB. Free memory is still 335.1MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 09:24:31,411 INFO L158 Benchmark]: CACSL2BoogieTranslator took 662.50ms. Allocated memory is still 358.6MB. Free memory was 332.4MB in the beginning and 299.2MB in the end (delta: 33.2MB). Peak memory consumption was 33.6MB. Max. memory is 16.0GB. [2023-08-27 09:24:31,412 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.03ms. Allocated memory is still 358.6MB. Free memory was 299.2MB in the beginning and 297.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 09:24:31,412 INFO L158 Benchmark]: Boogie Preprocessor took 52.89ms. Allocated memory is still 358.6MB. Free memory was 297.1MB in the beginning and 295.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 09:24:31,414 INFO L158 Benchmark]: RCFGBuilder took 429.29ms. Allocated memory is still 358.6MB. Free memory was 295.5MB in the beginning and 331.6MB in the end (delta: -36.1MB). Peak memory consumption was 18.3MB. Max. memory is 16.0GB. [2023-08-27 09:24:31,414 INFO L158 Benchmark]: TraceAbstraction took 3496.48ms. Allocated memory was 358.6MB in the beginning and 444.6MB in the end (delta: 86.0MB). Free memory was 330.6MB in the beginning and 326.3MB in the end (delta: 4.4MB). Peak memory consumption was 90.4MB. Max. memory is 16.0GB. [2023-08-27 09:24:31,419 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 358.6MB. Free memory is still 335.1MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 662.50ms. Allocated memory is still 358.6MB. Free memory was 332.4MB in the beginning and 299.2MB in the end (delta: 33.2MB). Peak memory consumption was 33.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 58.03ms. Allocated memory is still 358.6MB. Free memory was 299.2MB in the beginning and 297.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 52.89ms. Allocated memory is still 358.6MB. Free memory was 297.1MB in the beginning and 295.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 429.29ms. Allocated memory is still 358.6MB. Free memory was 295.5MB in the beginning and 331.6MB in the end (delta: -36.1MB). Peak memory consumption was 18.3MB. Max. memory is 16.0GB. * TraceAbstraction took 3496.48ms. Allocated memory was 358.6MB in the beginning and 444.6MB in the end (delta: 86.0MB). Free memory was 330.6MB in the beginning and 326.3MB in the end (delta: 4.4MB). Peak memory consumption was 90.4MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 283]: Unsoundness Warning unspecified type, defaulting to int C: short [283] - GenericResultAtLocation [Line: 283]: Unsoundness Warning unspecified type, defaulting to int C: short [283] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.7s, 132 PlacesBefore, 55 PlacesAfterwards, 118 TransitionsBefore, 41 TransitionsAfterwards, 1344 CoEnabledTransitionPairs, 5 FixpointIterations, 21 TrivialSequentialCompositions, 56 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 77 TotalNumberOfCompositions, 2923 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2106, independent: 1994, independent conditional: 0, independent unconditional: 1994, dependent: 112, dependent conditional: 0, dependent unconditional: 112, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 723, independent: 681, independent conditional: 0, independent unconditional: 681, dependent: 42, dependent conditional: 0, dependent unconditional: 42, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2106, independent: 1313, independent conditional: 0, independent unconditional: 1313, dependent: 70, dependent conditional: 0, dependent unconditional: 70, unknown: 723, unknown conditional: 0, unknown unconditional: 723] , Statistics on independence cache: Total cache size (in pairs): 62, Positive cache size: 49, Positive conditional cache size: 0, Positive unconditional cache size: 49, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 20]: assertion can be violated assertion can be violated We found a FailurePath: [L1124] 0 char *v; [L1161] 0 pthread_t t; [L1162] FCALL, FORK 0 pthread_create(&t, 0, thread0, 0) VAL [arg={0:0}, pthread_create(&t, 0, thread0, 0)=-2147483648, t={6:0}, v={0:0}] [L1146] 1 pthread_t t1, t2, t3, t4, t5; [L1147] FCALL, FORK 1 pthread_create(&t1, 0, thread1, 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, pthread_create(&t1, 0, thread1, 0)=-2147483647, t1={5:0}, t2={7:0}, t3={8:0}, t4={9:0}, t5={10:0}, v={0:0}] [L1148] 1 \read(t1) VAL [\read(t1)=-2147483647, arg={0:0}, arg={0:0}, arg={0:0}, t1={5:0}, t2={7:0}, t3={8:0}, t4={9:0}, t5={10:0}, v={0:0}] [L1127] 2 v = malloc(sizeof(char)) [L1128] 2 return 0; [L1148] FCALL, JOIN 2 pthread_join(t1, 0) VAL [\read(t1)=-2147483647, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={5:0}, t2={7:0}, t3={8:0}, t4={9:0}, t5={10:0}, v={3:0}] [L1149] FCALL, FORK 1 pthread_create(&t2, 0, thread2, 0) VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, pthread_create(&t2, 0, thread2, 0)=-2147483646, t1={5:0}, t2={7:0}, t3={8:0}, t4={9:0}, t5={10:0}, v={3:0}] [L1150] FCALL, FORK 1 pthread_create(&t3, 0, thread3, 0) VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, pthread_create(&t3, 0, thread3, 0)=-2147483645, t1={5:0}, t2={7:0}, t3={8:0}, t4={9:0}, t5={10:0}, v={3:0}] [L1151] FCALL, FORK 1 pthread_create(&t4, 0, thread2, 0) VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, pthread_create(&t4, 0, thread2, 0)=-2147483644, t1={5:0}, t2={7:0}, t3={8:0}, t4={9:0}, t5={10:0}, v={3:0}] [L1152] FCALL, FORK 1 pthread_create(&t5, 0, thread2, 0) VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, pthread_create(&t5, 0, thread2, 0)=-2147483643, t1={5:0}, t2={7:0}, t3={8:0}, t4={9:0}, t5={10:0}, v={3:0}] [L1133] 6 v[0] = 'X' [L1135] 6 return 0; [L1133] 5 v[0] = 'X' [L1135] 5 return 0; [L1153] 1 \read(t2) VAL [\read(t2)=-2147483646, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={5:0}, t2={7:0}, t3={8:0}, t4={9:0}, t5={10:0}, v={3:0}] [L1133] 3 v[0] = 'X' [L1135] 3 return 0; [L1153] FCALL, JOIN 3 pthread_join(t2, 0) VAL [\read(t2)=-2147483646, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={5:0}, t2={7:0}, t3={8:0}, t4={9:0}, t5={10:0}, v={3:0}] [L1154] 1 \read(t3) VAL [\read(t3)=-2147483645, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={5:0}, t2={7:0}, t3={8:0}, t4={9:0}, t5={10:0}, v={3:0}] [L1140] 4 v[0] = 'Y' [L1142] 4 return 0; [L1154] FCALL, JOIN 4 pthread_join(t3, 0) VAL [\read(t3)=-2147483645, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={5:0}, t2={7:0}, t3={8:0}, t4={9:0}, t5={10:0}, v={3:0}] [L1155] 1 \read(t4) VAL [\read(t4)=-2147483644, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={5:0}, t2={7:0}, t3={8:0}, t4={9:0}, t5={10:0}, v={3:0}] [L1155] FCALL, JOIN 5 pthread_join(t4, 0) VAL [\read(t4)=-2147483644, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={5:0}, t2={7:0}, t3={8:0}, t4={9:0}, t5={10:0}, v={3:0}] [L1156] 1 \read(t5) VAL [\read(t5)=-2147483643, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={5:0}, t2={7:0}, t3={8:0}, t4={9:0}, t5={10:0}, v={3:0}] [L1156] FCALL, JOIN 6 pthread_join(t5, 0) VAL [\read(t5)=-2147483643, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={5:0}, t2={7:0}, t3={8:0}, t4={9:0}, t5={10:0}, v={3:0}] [L1157] 1 return 0; [L1157] 1 return 0; [L1157] 1 return 0; [L1157] 1 return 0; [L1157] 1 return 0; [L1157] 1 return 0; [L1163] 0 \read(t) VAL [\read(t)=-2147483648, \result={0:0}, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t={6:0}, v={3:0}] [L1163] FCALL, JOIN 1 pthread_join(t, 0) VAL [\read(t)=-2147483648, \result={0:0}, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t={6:0}, v={3:0}] [L1164] EXPR 0 v[0] [L1164] CALL 0 __VERIFIER_assert(v[0] == 'X') [L1123] COND TRUE 0 !expression [L1123] CALL 0 reach_error() [L20] COND FALSE 0 !(0) [L20] 0 __assert_fail ("0", "singleton.c", 3, __extension__ __PRETTY_FUNCTION__) VAL [\result={0:0}, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, v={3:0}] - UnprovableResult [Line: 1150]: 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: 1152]: 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: 1147]: 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: 1149]: 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: 1151]: 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: 1162]: 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: 1151]: 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: 1149]: 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: 1152]: 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: 1150]: 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: 1147]: 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 11 procedures, 221 locations, 12 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: 3.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.8s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=133occurred in iteration=0, InterpolantAutomatonStates: 0, 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, 0.0s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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! [2023-08-27 09:24:31,441 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...