./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-ext/28_buggy_simple_loop1_vf.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 798a7b37 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-ext/28_buggy_simple_loop1_vf.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f7757e6e73d857d492b029f13f86cb5d550622238e5a2b483c58ab6fc3ffdeb1 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 02:03:11,666 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 02:03:11,718 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-04 02:03:11,722 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 02:03:11,722 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 02:03:11,735 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 02:03:11,735 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 02:03:11,735 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 02:03:11,736 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 02:03:11,736 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 02:03:11,736 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 02:03:11,736 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 02:03:11,736 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 02:03:11,736 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 02:03:11,736 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 02:03:11,737 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 02:03:11,737 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-04 02:03:11,737 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 02:03:11,737 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 02:03:11,737 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 02:03:11,737 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 02:03:11,737 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-04 02:03:11,737 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 02:03:11,737 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-04 02:03:11,737 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 02:03:11,737 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-04 02:03:11,737 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 02:03:11,737 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 02:03:11,737 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 02:03:11,737 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 02:03:11,738 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 02:03:11,738 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 02:03:11,738 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 02:03:11,738 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 02:03:11,738 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 02:03:11,738 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-04 02:03:11,738 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-04 02:03:11,738 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 02:03:11,738 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 02:03:11,738 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 02:03:11,738 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 02:03:11,738 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 02:03:11,738 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 02:03:11,738 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f7757e6e73d857d492b029f13f86cb5d550622238e5a2b483c58ab6fc3ffdeb1 [2025-03-04 02:03:11,953 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 02:03:11,962 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 02:03:11,963 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 02:03:11,965 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 02:03:11,965 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 02:03:11,966 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/28_buggy_simple_loop1_vf.i [2025-03-04 02:03:13,143 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65c2b939e/069e6c441bb34fac8d0534f5035aa147/FLAG83710362d [2025-03-04 02:03:13,420 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 02:03:13,424 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/28_buggy_simple_loop1_vf.i [2025-03-04 02:03:13,437 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65c2b939e/069e6c441bb34fac8d0534f5035aa147/FLAG83710362d [2025-03-04 02:03:13,453 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65c2b939e/069e6c441bb34fac8d0534f5035aa147 [2025-03-04 02:03:13,455 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 02:03:13,456 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 02:03:13,457 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 02:03:13,457 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 02:03:13,460 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 02:03:13,461 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 02:03:13" (1/1) ... [2025-03-04 02:03:13,461 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1298cda7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:03:13, skipping insertion in model container [2025-03-04 02:03:13,462 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 02:03:13" (1/1) ... [2025-03-04 02:03:13,487 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 02:03:13,721 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/28_buggy_simple_loop1_vf.i[30287,30300] [2025-03-04 02:03:13,727 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 02:03:13,734 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 02:03:13,768 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/28_buggy_simple_loop1_vf.i[30287,30300] [2025-03-04 02:03:13,771 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 02:03:13,793 INFO L204 MainTranslator]: Completed translation [2025-03-04 02:03:13,794 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:03:13 WrapperNode [2025-03-04 02:03:13,794 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 02:03:13,795 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 02:03:13,795 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 02:03:13,795 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 02:03:13,799 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:03:13" (1/1) ... [2025-03-04 02:03:13,807 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:03:13" (1/1) ... [2025-03-04 02:03:13,819 INFO L138 Inliner]: procedures = 166, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 16 [2025-03-04 02:03:13,819 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 02:03:13,820 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 02:03:13,820 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 02:03:13,820 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 02:03:13,826 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:03:13" (1/1) ... [2025-03-04 02:03:13,826 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:03:13" (1/1) ... [2025-03-04 02:03:13,827 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:03:13" (1/1) ... [2025-03-04 02:03:13,833 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-04 02:03:13,834 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:03:13" (1/1) ... [2025-03-04 02:03:13,834 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:03:13" (1/1) ... [2025-03-04 02:03:13,836 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:03:13" (1/1) ... [2025-03-04 02:03:13,836 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:03:13" (1/1) ... [2025-03-04 02:03:13,837 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:03:13" (1/1) ... [2025-03-04 02:03:13,837 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:03:13" (1/1) ... [2025-03-04 02:03:13,841 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 02:03:13,841 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 02:03:13,841 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 02:03:13,841 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 02:03:13,842 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:03:13" (1/1) ... [2025-03-04 02:03:13,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 02:03:13,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 02:03:13,866 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-04 02:03:13,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-04 02:03:13,884 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2025-03-04 02:03:13,884 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2025-03-04 02:03:13,884 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 02:03:13,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-04 02:03:13,884 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 02:03:13,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 02:03:13,885 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-04 02:03:13,961 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 02:03:13,962 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 02:03:14,057 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-04 02:03:14,057 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 02:03:14,110 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 02:03:14,111 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 02:03:14,111 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 02:03:14 BoogieIcfgContainer [2025-03-04 02:03:14,111 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 02:03:14,112 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 02:03:14,113 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 02:03:14,116 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 02:03:14,116 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 02:03:13" (1/3) ... [2025-03-04 02:03:14,116 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@735cc23a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 02:03:14, skipping insertion in model container [2025-03-04 02:03:14,116 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:03:13" (2/3) ... [2025-03-04 02:03:14,117 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@735cc23a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 02:03:14, skipping insertion in model container [2025-03-04 02:03:14,117 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 02:03:14" (3/3) ... [2025-03-04 02:03:14,117 INFO L128 eAbstractionObserver]: Analyzing ICFG 28_buggy_simple_loop1_vf.i [2025-03-04 02:03:14,130 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 02:03:14,131 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28_buggy_simple_loop1_vf.i that has 2 procedures, 15 locations, 1 initial locations, 4 loop locations, and 1 error locations. [2025-03-04 02:03:14,132 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-04 02:03:14,175 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-04 02:03:14,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 18 places, 20 transitions, 44 flow [2025-03-04 02:03:14,214 INFO L124 PetriNetUnfolderBase]: 5/22 cut-off events. [2025-03-04 02:03:14,216 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-04 02:03:14,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26 conditions, 22 events. 5/22 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 34 event pairs, 0 based on Foata normal form. 0/14 useless extension candidates. Maximal degree in co-relation 17. Up to 2 conditions per place. [2025-03-04 02:03:14,219 INFO L82 GeneralOperation]: Start removeDead. Operand has 18 places, 20 transitions, 44 flow [2025-03-04 02:03:14,220 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 18 places, 20 transitions, 44 flow [2025-03-04 02:03:14,225 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 02:03:14,231 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@5e7068b7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 02:03:14,232 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-03-04 02:03:14,240 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-04 02:03:14,240 INFO L124 PetriNetUnfolderBase]: 3/16 cut-off events. [2025-03-04 02:03:14,240 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-04 02:03:14,240 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 02:03:14,240 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-03-04 02:03:14,241 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 02:03:14,244 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 02:03:14,244 INFO L85 PathProgramCache]: Analyzing trace with hash -386211728, now seen corresponding path program 1 times [2025-03-04 02:03:14,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 02:03:14,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352348505] [2025-03-04 02:03:14,249 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 02:03:14,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 02:03:14,304 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-04 02:03:14,315 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-04 02:03:14,316 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 02:03:14,316 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-04 02:03:14,316 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-04 02:03:14,319 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-04 02:03:14,327 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-04 02:03:14,328 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 02:03:14,328 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-04 02:03:14,340 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-04 02:03:14,341 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-04 02:03:14,342 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2025-03-04 02:03:14,344 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2025-03-04 02:03:14,344 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2025-03-04 02:03:14,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-04 02:03:14,345 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-03-04 02:03:14,348 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-04 02:03:14,348 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-03-04 02:03:14,386 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-04 02:03:14,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 30 places, 35 transitions, 80 flow [2025-03-04 02:03:14,406 INFO L124 PetriNetUnfolderBase]: 10/40 cut-off events. [2025-03-04 02:03:14,408 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-04 02:03:14,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 40 events. 10/40 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 84 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 31. Up to 3 conditions per place. [2025-03-04 02:03:14,409 INFO L82 GeneralOperation]: Start removeDead. Operand has 30 places, 35 transitions, 80 flow [2025-03-04 02:03:14,410 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 35 transitions, 80 flow [2025-03-04 02:03:14,411 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 02:03:14,412 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@5e7068b7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 02:03:14,413 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-03-04 02:03:14,419 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-04 02:03:14,421 INFO L124 PetriNetUnfolderBase]: 3/17 cut-off events. [2025-03-04 02:03:14,421 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-04 02:03:14,421 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 02:03:14,421 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-04 02:03:14,421 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2025-03-04 02:03:14,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 02:03:14,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1335945992, now seen corresponding path program 1 times [2025-03-04 02:03:14,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 02:03:14,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453992658] [2025-03-04 02:03:14,423 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 02:03:14,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 02:03:14,438 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-04 02:03:14,474 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-04 02:03:14,474 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 02:03:14,474 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-04 02:03:14,474 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-04 02:03:14,477 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-04 02:03:14,496 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-04 02:03:14,501 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 02:03:14,501 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-04 02:03:14,504 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-04 02:03:14,504 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-04 02:03:14,504 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2025-03-04 02:03:14,505 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2025-03-04 02:03:14,505 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2025-03-04 02:03:14,505 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2025-03-04 02:03:14,505 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-04 02:03:14,505 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-03-04 02:03:14,521 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2025-03-04 02:03:14,522 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-04 02:03:14,528 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.03 02:03:14 BasicIcfg [2025-03-04 02:03:14,528 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-04 02:03:14,529 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-04 02:03:14,529 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-04 02:03:14,529 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-04 02:03:14,530 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 02:03:14" (3/4) ... [2025-03-04 02:03:14,530 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2025-03-04 02:03:14,561 INFO L127 tionWitnessGenerator]: Generated YAML witness of length 4. [2025-03-04 02:03:14,592 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-04 02:03:14,592 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-04 02:03:14,592 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-04 02:03:14,593 INFO L158 Benchmark]: Toolchain (without parser) took 1136.51ms. Allocated memory is still 167.8MB. Free memory was 120.9MB in the beginning and 45.4MB in the end (delta: 75.6MB). Peak memory consumption was 75.5MB. Max. memory is 16.1GB. [2025-03-04 02:03:14,593 INFO L158 Benchmark]: CDTParser took 0.67ms. Allocated memory is still 201.3MB. Free memory is still 120.0MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 02:03:14,594 INFO L158 Benchmark]: CACSL2BoogieTranslator took 336.88ms. Allocated memory is still 167.8MB. Free memory was 120.9MB in the beginning and 101.4MB in the end (delta: 19.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-04 02:03:14,594 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.58ms. Allocated memory is still 167.8MB. Free memory was 101.4MB in the beginning and 100.1MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 02:03:14,594 INFO L158 Benchmark]: Boogie Preprocessor took 21.00ms. Allocated memory is still 167.8MB. Free memory was 100.1MB in the beginning and 98.8MB in the end (delta: 1.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-04 02:03:14,595 INFO L158 Benchmark]: IcfgBuilder took 269.85ms. Allocated memory is still 167.8MB. Free memory was 98.8MB in the beginning and 82.5MB in the end (delta: 16.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-04 02:03:14,595 INFO L158 Benchmark]: TraceAbstraction took 415.88ms. Allocated memory is still 167.8MB. Free memory was 82.0MB in the beginning and 51.1MB in the end (delta: 31.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-03-04 02:03:14,595 INFO L158 Benchmark]: Witness Printer took 63.35ms. Allocated memory is still 167.8MB. Free memory was 51.1MB in the beginning and 45.4MB in the end (delta: 5.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-04 02:03:14,597 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.67ms. Allocated memory is still 201.3MB. Free memory is still 120.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 336.88ms. Allocated memory is still 167.8MB. Free memory was 120.9MB in the beginning and 101.4MB in the end (delta: 19.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.58ms. Allocated memory is still 167.8MB. Free memory was 101.4MB in the beginning and 100.1MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 21.00ms. Allocated memory is still 167.8MB. Free memory was 100.1MB in the beginning and 98.8MB in the end (delta: 1.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * IcfgBuilder took 269.85ms. Allocated memory is still 167.8MB. Free memory was 98.8MB in the beginning and 82.5MB in the end (delta: 16.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 415.88ms. Allocated memory is still 167.8MB. Free memory was 82.0MB in the beginning and 51.1MB in the end (delta: 31.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Witness Printer took 63.35ms. Allocated memory is still 167.8MB. Free memory was 51.1MB in the beginning and 45.4MB in the end (delta: 5.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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] COND TRUE 0 1 [L703] FCALL, FORK 0 pthread_create(&t, 0, thr1, 0) VAL [\old(arg)={0:0}, t=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 [\old(arg)={0:0}, arg={0:0}, i=0, j=1, k=1] [L688] COND FALSE 1 !(i