/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.order.of.the.error.locations.to.be.checked TOGETHER -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_28_buggy_simple_loop1_vf_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 15:49:21,368 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 15:49:21,414 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 15:49:21,420 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 15:49:21,420 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 15:49:21,421 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 15:49:21,421 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 15:49:21,451 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 15:49:21,452 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 15:49:21,455 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 15:49:21,456 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 15:49:21,456 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 15:49:21,457 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 15:49:21,458 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 15:49:21,458 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 15:49:21,459 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 15:49:21,459 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 15:49:21,459 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 15:49:21,459 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 15:49:21,460 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 15:49:21,460 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 15:49:21,460 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 15:49:21,460 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 15:49:21,461 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 15:49:21,462 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 15:49:21,462 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 15:49:21,462 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 15:49:21,463 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 15:49:21,463 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 15:49:21,463 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 15:49:21,464 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 15:49:21,464 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 15:49:21,464 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 15:49:21,465 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 15:49:21,465 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 15:49:21,465 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 15:49:21,466 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 15:49:21,466 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 15:49:21,466 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 15:49:21,466 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 15:49:21,466 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 15:49:21,466 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 15:49:21,705 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 15:49:21,729 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 15:49:21,732 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 15:49:21,733 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 15:49:21,733 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 15:49:21,734 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_28_buggy_simple_loop1_vf_bound2.i [2023-08-03 15:49:22,933 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 15:49:23,177 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 15:49:23,178 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_28_buggy_simple_loop1_vf_bound2.i [2023-08-03 15:49:23,189 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95d513f22/7efdef6cbf594388af64d25686c08a1f/FLAG70d849131 [2023-08-03 15:49:23,200 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95d513f22/7efdef6cbf594388af64d25686c08a1f [2023-08-03 15:49:23,202 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 15:49:23,203 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 15:49:23,204 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 15:49:23,204 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 15:49:23,207 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 15:49:23,207 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 03:49:23" (1/1) ... [2023-08-03 15:49:23,208 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26ce518c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:49:23, skipping insertion in model container [2023-08-03 15:49:23,208 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 03:49:23" (1/1) ... [2023-08-03 15:49:23,241 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 15:49:23,551 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_28_buggy_simple_loop1_vf_bound2.i[30287,30300] [2023-08-03 15:49:23,558 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 15:49:23,566 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 15:49:23,598 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [250] [2023-08-03 15:49:23,599 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [250] [2023-08-03 15:49:23,615 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_28_buggy_simple_loop1_vf_bound2.i[30287,30300] [2023-08-03 15:49:23,622 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 15:49:23,654 INFO L206 MainTranslator]: Completed translation [2023-08-03 15:49:23,656 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:49:23 WrapperNode [2023-08-03 15:49:23,656 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 15:49:23,657 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 15:49:23,657 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 15:49:23,657 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 15:49:23,663 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:49:23" (1/1) ... [2023-08-03 15:49:23,689 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:49:23" (1/1) ... [2023-08-03 15:49:23,709 INFO L138 Inliner]: procedures = 167, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 26 [2023-08-03 15:49:23,710 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 15:49:23,711 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 15:49:23,711 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 15:49:23,711 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 15:49:23,718 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:49:23" (1/1) ... [2023-08-03 15:49:23,719 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:49:23" (1/1) ... [2023-08-03 15:49:23,727 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:49:23" (1/1) ... [2023-08-03 15:49:23,728 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:49:23" (1/1) ... [2023-08-03 15:49:23,741 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:49:23" (1/1) ... [2023-08-03 15:49:23,744 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:49:23" (1/1) ... [2023-08-03 15:49:23,745 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:49:23" (1/1) ... [2023-08-03 15:49:23,746 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:49:23" (1/1) ... [2023-08-03 15:49:23,748 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 15:49:23,749 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 15:49:23,749 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 15:49:23,749 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 15:49:23,750 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:49:23" (1/1) ... [2023-08-03 15:49:23,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 15:49:23,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 15:49:23,789 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) [2023-08-03 15:49:23,812 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 [2023-08-03 15:49:23,822 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-03 15:49:23,822 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-03 15:49:23,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 15:49:23,823 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 15:49:23,823 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 15:49:23,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 15:49:23,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 15:49:23,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 15:49:23,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 15:49:23,826 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-03 15:49:23,941 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 15:49:23,943 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 15:49:24,162 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 15:49:24,167 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 15:49:24,167 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-03 15:49:24,169 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 03:49:24 BoogieIcfgContainer [2023-08-03 15:49:24,169 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 15:49:24,171 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 15:49:24,171 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 15:49:24,174 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 15:49:24,174 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 03:49:23" (1/3) ... [2023-08-03 15:49:24,174 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@472215cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 03:49:24, skipping insertion in model container [2023-08-03 15:49:24,174 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:49:23" (2/3) ... [2023-08-03 15:49:24,175 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@472215cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 03:49:24, skipping insertion in model container [2023-08-03 15:49:24,175 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 03:49:24" (3/3) ... [2023-08-03 15:49:24,176 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-ext_28_buggy_simple_loop1_vf_bound2.i [2023-08-03 15:49:24,185 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 15:49:24,194 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 15:49:24,194 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 15:49:24,195 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 15:49:24,262 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 15:49:24,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 71 transitions, 147 flow [2023-08-03 15:49:24,350 INFO L124 PetriNetUnfolderBase]: 10/81 cut-off events. [2023-08-03 15:49:24,350 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 15:49:24,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 81 events. 10/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 105 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 58. Up to 4 conditions per place. [2023-08-03 15:49:24,355 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 71 transitions, 147 flow [2023-08-03 15:49:24,360 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 71 transitions, 147 flow [2023-08-03 15:49:24,363 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 15:49:24,373 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 65 places, 71 transitions, 147 flow [2023-08-03 15:49:24,377 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 65 places, 71 transitions, 147 flow [2023-08-03 15:49:24,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 71 transitions, 147 flow [2023-08-03 15:49:24,404 INFO L124 PetriNetUnfolderBase]: 10/81 cut-off events. [2023-08-03 15:49:24,404 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 15:49:24,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 81 events. 10/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 105 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 58. Up to 4 conditions per place. [2023-08-03 15:49:24,407 INFO L119 LiptonReduction]: Number of co-enabled transitions 1376 [2023-08-03 15:49:26,120 INFO L134 LiptonReduction]: Checked pairs total: 1068 [2023-08-03 15:49:26,120 INFO L136 LiptonReduction]: Total number of compositions: 61 [2023-08-03 15:49:26,140 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 15:49:26,146 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=true, 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;@3559d8a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 15:49:26,147 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-03 15:49:26,153 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 15:49:26,153 INFO L124 PetriNetUnfolderBase]: 2/13 cut-off events. [2023-08-03 15:49:26,153 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 15:49:26,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:49:26,153 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 15:49:26,154 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-03 15:49:26,158 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:49:26,158 INFO L85 PathProgramCache]: Analyzing trace with hash 813042396, now seen corresponding path program 1 times [2023-08-03 15:49:26,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:49:26,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428396581] [2023-08-03 15:49:26,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:49:26,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:49:26,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 15:49:26,270 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 15:49:26,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 15:49:26,321 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 15:49:26,322 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 15:49:26,323 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-03 15:49:26,324 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-08-03 15:49:26,325 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-08-03 15:49:26,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 15:49:26,325 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-03 15:49:26,328 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 15:49:26,328 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 15:49:26,362 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 15:49:26,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 103 places, 115 transitions, 242 flow [2023-08-03 15:49:26,387 INFO L124 PetriNetUnfolderBase]: 19/140 cut-off events. [2023-08-03 15:49:26,387 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 15:49:26,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150 conditions, 140 events. 19/140 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 296 event pairs, 0 based on Foata normal form. 0/116 useless extension candidates. Maximal degree in co-relation 101. Up to 6 conditions per place. [2023-08-03 15:49:26,389 INFO L82 GeneralOperation]: Start removeDead. Operand has 103 places, 115 transitions, 242 flow [2023-08-03 15:49:26,390 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 103 places, 115 transitions, 242 flow [2023-08-03 15:49:26,391 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 15:49:26,391 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 103 places, 115 transitions, 242 flow [2023-08-03 15:49:26,391 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 103 places, 115 transitions, 242 flow [2023-08-03 15:49:26,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 103 places, 115 transitions, 242 flow [2023-08-03 15:49:26,411 INFO L124 PetriNetUnfolderBase]: 19/140 cut-off events. [2023-08-03 15:49:26,412 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 15:49:26,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150 conditions, 140 events. 19/140 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 296 event pairs, 0 based on Foata normal form. 0/116 useless extension candidates. Maximal degree in co-relation 101. Up to 6 conditions per place. [2023-08-03 15:49:26,416 INFO L119 LiptonReduction]: Number of co-enabled transitions 6536 [2023-08-03 15:49:28,602 INFO L134 LiptonReduction]: Checked pairs total: 4805 [2023-08-03 15:49:28,602 INFO L136 LiptonReduction]: Total number of compositions: 98 [2023-08-03 15:49:28,604 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 15:49:28,605 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=true, 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;@3559d8a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 15:49:28,605 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 15:49:28,608 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 15:49:28,608 INFO L124 PetriNetUnfolderBase]: 5/18 cut-off events. [2023-08-03 15:49:28,608 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-03 15:49:28,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:49:28,608 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-03 15:49:28,609 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 15:49:28,609 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:49:28,609 INFO L85 PathProgramCache]: Analyzing trace with hash -180613030, now seen corresponding path program 1 times [2023-08-03 15:49:28,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:49:28,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091449143] [2023-08-03 15:49:28,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:49:28,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:49:28,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 15:49:28,641 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 15:49:28,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 15:49:28,666 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 15:49:28,666 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 15:49:28,667 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-03 15:49:28,667 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-08-03 15:49:28,667 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-03 15:49:28,667 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-08-03 15:49:28,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 15:49:28,667 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-03 15:49:28,671 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 15:49:28,671 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 15:49:28,687 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 03:49:28 BasicIcfg [2023-08-03 15:49:28,688 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 15:49:28,688 INFO L158 Benchmark]: Toolchain (without parser) took 5485.19ms. Allocated memory is still 536.9MB. Free memory was 486.7MB in the beginning and 446.6MB in the end (delta: 40.1MB). Peak memory consumption was 41.4MB. Max. memory is 16.0GB. [2023-08-03 15:49:28,689 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 385.9MB. Free memory is still 338.5MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 15:49:28,689 INFO L158 Benchmark]: CACSL2BoogieTranslator took 451.99ms. Allocated memory is still 536.9MB. Free memory was 486.4MB in the beginning and 467.1MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-03 15:49:28,690 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.26ms. Allocated memory is still 536.9MB. Free memory was 467.1MB in the beginning and 465.2MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 15:49:28,690 INFO L158 Benchmark]: Boogie Preprocessor took 37.46ms. Allocated memory is still 536.9MB. Free memory was 465.2MB in the beginning and 464.1MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 15:49:28,691 INFO L158 Benchmark]: RCFGBuilder took 420.61ms. Allocated memory is still 536.9MB. Free memory was 463.8MB in the beginning and 502.4MB in the end (delta: -38.6MB). Peak memory consumption was 20.3MB. Max. memory is 16.0GB. [2023-08-03 15:49:28,691 INFO L158 Benchmark]: TraceAbstraction took 4516.63ms. Allocated memory is still 536.9MB. Free memory was 502.4MB in the beginning and 446.6MB in the end (delta: 55.8MB). Peak memory consumption was 54.6MB. Max. memory is 16.0GB. [2023-08-03 15:49:28,693 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 385.9MB. Free memory is still 338.5MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 451.99ms. Allocated memory is still 536.9MB. Free memory was 486.4MB in the beginning and 467.1MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 53.26ms. Allocated memory is still 536.9MB. Free memory was 467.1MB in the beginning and 465.2MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 37.46ms. Allocated memory is still 536.9MB. Free memory was 465.2MB in the beginning and 464.1MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 420.61ms. Allocated memory is still 536.9MB. Free memory was 463.8MB in the beginning and 502.4MB in the end (delta: -38.6MB). Peak memory consumption was 20.3MB. Max. memory is 16.0GB. * TraceAbstraction took 4516.63ms. Allocated memory is still 536.9MB. Free memory was 502.4MB in the beginning and 446.6MB in the end (delta: 55.8MB). Peak memory consumption was 54.6MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 250]: Unsoundness Warning unspecified type, defaulting to int C: short [250] - GenericResultAtLocation [Line: 250]: Unsoundness Warning unspecified type, defaulting to int C: short [250] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.7s, 65 PlacesBefore, 15 PlacesAfterwards, 71 TransitionsBefore, 17 TransitionsAfterwards, 1376 CoEnabledTransitionPairs, 5 FixpointIterations, 10 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 4 ChoiceCompositions, 61 TotalNumberOfCompositions, 1068 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1068, independent: 1068, independent conditional: 0, independent unconditional: 1068, 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: 689, independent: 689, independent conditional: 0, independent unconditional: 689, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1068, independent: 379, independent conditional: 0, independent unconditional: 379, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 689, unknown conditional: 0, unknown unconditional: 689] , Statistics on independence cache: Total cache size (in pairs): 11, Positive cache size: 11, Positive conditional cache size: 0, Positive unconditional cache size: 11, 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 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.2s, 103 PlacesBefore, 25 PlacesAfterwards, 115 TransitionsBefore, 30 TransitionsAfterwards, 6536 CoEnabledTransitionPairs, 5 FixpointIterations, 10 TrivialSequentialCompositions, 64 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 17 ConcurrentYvCompositions, 7 ChoiceCompositions, 98 TotalNumberOfCompositions, 4805 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4805, independent: 4805, independent conditional: 0, independent unconditional: 4805, 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: 3187, independent: 3187, independent conditional: 0, independent unconditional: 3187, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 4805, independent: 1618, independent conditional: 0, independent unconditional: 1618, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 3187, unknown conditional: 0, unknown unconditional: 3187] , Statistics on independence cache: Total cache size (in pairs): 33, Positive cache size: 33, Positive conditional cache size: 0, Positive unconditional cache size: 33, 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 - CounterExampleResult [Line: 695]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L700] 0 pthread_t t; [L701] 0 int asdf=0; VAL [asdf=0, t={3:0}] [L701] COND TRUE 0 asdf<2 [L702] FCALL, FORK 0 pthread_create(&t, 0, thr1, 0) VAL [arg={0:0}, asdf=0, pthread_create(&t, 0, thr1, 0)=-1, t={3:0}] [L686] 1 unsigned int x=__VERIFIER_nondet_uint(), y=__VERIFIER_nondet_uint(), z=__VERIFIER_nondet_uint(); [L686] 1 unsigned int x=__VERIFIER_nondet_uint(), y=__VERIFIER_nondet_uint(), z=__VERIFIER_nondet_uint(); [L686] 1 unsigned int x=__VERIFIER_nondet_uint(), y=__VERIFIER_nondet_uint(), z=__VERIFIER_nondet_uint(); [L687] 1 int i, j=1, k=1; [L688] 1 i=0 VAL [arg={0:0}, arg={0:0}, i=0, j=1, k=1] [L688] COND FALSE 1 !(i