./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/goblint-regression/36-apron_41-threadenter-no-locals_unknown_1_neg.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8fc3dc66 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/goblint-regression/36-apron_41-threadenter-no-locals_unknown_1_neg.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 efd273c7d755fee5b08c1ba81e4b1fd2265522d7f0703d6f8ec42ad387cd2968 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 06:34:50,985 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 06:34:51,055 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-17 06:34:51,062 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 06:34:51,062 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 06:34:51,081 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 06:34:51,082 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 06:34:51,082 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 06:34:51,082 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 06:34:51,082 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 06:34:51,082 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 06:34:51,083 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 06:34:51,083 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 06:34:51,083 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 06:34:51,083 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 06:34:51,083 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 06:34:51,083 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 06:34:51,083 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 06:34:51,083 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 06:34:51,083 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 06:34:51,084 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 06:34:51,084 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 06:34:51,084 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 06:34:51,084 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 06:34:51,084 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 06:34:51,084 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 06:34:51,084 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 06:34:51,084 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 06:34:51,084 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 06:34:51,084 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 06:34:51,084 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 06:34:51,084 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 06:34:51,085 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 06:34:51,085 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 06:34:51,085 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 06:34:51,085 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 06:34:51,085 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 06:34:51,085 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 06:34:51,085 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 06:34:51,085 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 06:34:51,085 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 06:34:51,085 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 06:34:51,085 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 06:34:51,085 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 -> efd273c7d755fee5b08c1ba81e4b1fd2265522d7f0703d6f8ec42ad387cd2968 [2025-03-17 06:34:51,316 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 06:34:51,326 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 06:34:51,328 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 06:34:51,328 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 06:34:51,328 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 06:34:51,329 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/36-apron_41-threadenter-no-locals_unknown_1_neg.i [2025-03-17 06:34:52,569 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4972faa6d/12e8a1f49a324c38bade0bc908c9ea4f/FLAG69907fa50 [2025-03-17 06:34:52,849 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 06:34:52,852 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/36-apron_41-threadenter-no-locals_unknown_1_neg.i [2025-03-17 06:34:52,870 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4972faa6d/12e8a1f49a324c38bade0bc908c9ea4f/FLAG69907fa50 [2025-03-17 06:34:53,137 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4972faa6d/12e8a1f49a324c38bade0bc908c9ea4f [2025-03-17 06:34:53,139 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 06:34:53,140 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 06:34:53,141 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 06:34:53,141 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 06:34:53,144 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 06:34:53,144 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 06:34:53" (1/1) ... [2025-03-17 06:34:53,145 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bab6996 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:34:53, skipping insertion in model container [2025-03-17 06:34:53,145 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 06:34:53" (1/1) ... [2025-03-17 06:34:53,175 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 06:34:53,297 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/goblint-regression/36-apron_41-threadenter-no-locals_unknown_1_neg.i[1102,1115] [2025-03-17 06:34:53,427 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 06:34:53,434 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 06:34:53,443 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/goblint-regression/36-apron_41-threadenter-no-locals_unknown_1_neg.i[1102,1115] [2025-03-17 06:34:53,476 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 06:34:53,502 INFO L204 MainTranslator]: Completed translation [2025-03-17 06:34:53,503 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:34:53 WrapperNode [2025-03-17 06:34:53,504 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 06:34:53,505 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 06:34:53,505 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 06:34:53,505 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 06:34:53,510 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:34:53" (1/1) ... [2025-03-17 06:34:53,520 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:34:53" (1/1) ... [2025-03-17 06:34:53,535 INFO L138 Inliner]: procedures = 161, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 31 [2025-03-17 06:34:53,536 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 06:34:53,537 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 06:34:53,537 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 06:34:53,537 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 06:34:53,542 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:34:53" (1/1) ... [2025-03-17 06:34:53,543 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:34:53" (1/1) ... [2025-03-17 06:34:53,544 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:34:53" (1/1) ... [2025-03-17 06:34:53,556 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]. [2025-03-17 06:34:53,556 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:34:53" (1/1) ... [2025-03-17 06:34:53,556 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:34:53" (1/1) ... [2025-03-17 06:34:53,559 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:34:53" (1/1) ... [2025-03-17 06:34:53,562 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:34:53" (1/1) ... [2025-03-17 06:34:53,563 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:34:53" (1/1) ... [2025-03-17 06:34:53,563 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:34:53" (1/1) ... [2025-03-17 06:34:53,564 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 06:34:53,568 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 06:34:53,568 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 06:34:53,568 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 06:34:53,569 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:34:53" (1/1) ... [2025-03-17 06:34:53,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 06:34:53,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:34:53,594 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) [2025-03-17 06:34:53,598 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 [2025-03-17 06:34:53,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 06:34:53,616 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2025-03-17 06:34:53,616 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2025-03-17 06:34:53,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 06:34:53,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 06:34:53,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 06:34:53,617 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-17 06:34:53,702 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 06:34:53,704 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 06:34:53,779 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-17 06:34:53,779 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 06:34:53,819 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 06:34:53,819 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 06:34:53,820 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 06:34:53 BoogieIcfgContainer [2025-03-17 06:34:53,820 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 06:34:53,821 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 06:34:53,821 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 06:34:53,825 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 06:34:53,825 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 06:34:53" (1/3) ... [2025-03-17 06:34:53,826 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@472b6651 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 06:34:53, skipping insertion in model container [2025-03-17 06:34:53,826 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:34:53" (2/3) ... [2025-03-17 06:34:53,826 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@472b6651 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 06:34:53, skipping insertion in model container [2025-03-17 06:34:53,826 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 06:34:53" (3/3) ... [2025-03-17 06:34:53,827 INFO L128 eAbstractionObserver]: Analyzing ICFG 36-apron_41-threadenter-no-locals_unknown_1_neg.i [2025-03-17 06:34:53,839 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 06:34:53,840 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 36-apron_41-threadenter-no-locals_unknown_1_neg.i that has 2 procedures, 10 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2025-03-17 06:34:53,840 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-17 06:34:53,871 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-17 06:34:53,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 13 places, 10 transitions, 24 flow [2025-03-17 06:34:53,913 INFO L124 PetriNetUnfolderBase]: 1/9 cut-off events. [2025-03-17 06:34:53,915 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 06:34:53,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13 conditions, 9 events. 1/9 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 7 event pairs, 0 based on Foata normal form. 0/7 useless extension candidates. Maximal degree in co-relation 7. Up to 2 conditions per place. [2025-03-17 06:34:53,918 INFO L82 GeneralOperation]: Start removeDead. Operand has 13 places, 10 transitions, 24 flow [2025-03-17 06:34:53,920 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 10 places, 6 transitions, 15 flow [2025-03-17 06:34:53,929 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 06:34:53,938 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;@32bd52c7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 06:34:53,938 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-03-17 06:34:53,943 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 06:34:53,943 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2025-03-17 06:34:53,943 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 06:34:53,943 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:34:53,944 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-03-17 06:34:53,944 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:34:53,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:34:53,948 INFO L85 PathProgramCache]: Analyzing trace with hash 92991645, now seen corresponding path program 1 times [2025-03-17 06:34:53,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:34:53,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124051598] [2025-03-17 06:34:53,953 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:34:53,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:34:54,011 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-17 06:34:54,027 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-17 06:34:54,028 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:34:54,028 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 06:34:54,029 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 06:34:54,034 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-17 06:34:54,038 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-17 06:34:54,039 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:34:54,039 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 06:34:54,053 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-17 06:34:54,055 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-17 06:34:54,056 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2025-03-17 06:34:54,057 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2025-03-17 06:34:54,057 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2025-03-17 06:34:54,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 06:34:54,058 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-03-17 06:34:54,073 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-03-17 06:34:54,074 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-17 06:34:54,077 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.03 06:34:54 BasicIcfg [2025-03-17 06:34:54,077 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-17 06:34:54,078 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-17 06:34:54,078 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-17 06:34:54,079 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-17 06:34:54,079 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 06:34:53" (3/4) ... [2025-03-17 06:34:54,080 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2025-03-17 06:34:54,109 INFO L127 tionWitnessGenerator]: Generated YAML witness of length 3. [2025-03-17 06:34:54,145 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-17 06:34:54,145 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-17 06:34:54,145 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-17 06:34:54,146 INFO L158 Benchmark]: Toolchain (without parser) took 1006.66ms. Allocated memory is still 167.8MB. Free memory was 131.9MB in the beginning and 74.3MB in the end (delta: 57.6MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. [2025-03-17 06:34:54,147 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 201.3MB. Free memory is still 128.4MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 06:34:54,147 INFO L158 Benchmark]: CACSL2BoogieTranslator took 363.69ms. Allocated memory is still 167.8MB. Free memory was 131.9MB in the beginning and 113.3MB in the end (delta: 18.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-17 06:34:54,148 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.66ms. Allocated memory is still 167.8MB. Free memory was 113.3MB in the beginning and 111.6MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 06:34:54,148 INFO L158 Benchmark]: Boogie Preprocessor took 27.66ms. Allocated memory is still 167.8MB. Free memory was 111.6MB in the beginning and 110.4MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 06:34:54,149 INFO L158 Benchmark]: IcfgBuilder took 251.74ms. Allocated memory is still 167.8MB. Free memory was 110.4MB in the beginning and 96.2MB in the end (delta: 14.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-17 06:34:54,149 INFO L158 Benchmark]: TraceAbstraction took 255.86ms. Allocated memory is still 167.8MB. Free memory was 95.8MB in the beginning and 79.7MB in the end (delta: 16.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-17 06:34:54,150 INFO L158 Benchmark]: Witness Printer took 67.15ms. Allocated memory is still 167.8MB. Free memory was 79.7MB in the beginning and 74.3MB in the end (delta: 5.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-17 06:34:54,151 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 201.3MB. Free memory is still 128.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 363.69ms. Allocated memory is still 167.8MB. Free memory was 131.9MB in the beginning and 113.3MB in the end (delta: 18.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.66ms. Allocated memory is still 167.8MB. Free memory was 113.3MB in the beginning and 111.6MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 27.66ms. Allocated memory is still 167.8MB. Free memory was 111.6MB in the beginning and 110.4MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 251.74ms. Allocated memory is still 167.8MB. Free memory was 110.4MB in the beginning and 96.2MB in the end (delta: 14.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 255.86ms. Allocated memory is still 167.8MB. Free memory was 95.8MB in the beginning and 79.7MB in the end (delta: 16.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 67.15ms. Allocated memory is still 167.8MB. Free memory was 79.7MB in the beginning and 74.3MB in the end (delta: 5.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 19]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L688] 0 int x = 3; [L689] 0 pthread_t id; [L690] FCALL, FORK 0 pthread_create(&id, ((void *)0), t_fun, ((void *)0)) VAL [id=-1, x=3] [L683] 1 int x = __VERIFIER_nondet_int(); [L684] CALL 1 __VERIFIER_assert(!(x == 3)) [L19] COND TRUE 1 !(cond) VAL [\old(cond)=0, cond=0] [L19] 1 reach_error() VAL [\old(cond)=0, cond=0] - UnprovableResult [Line: 690]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 17 locations, 17 edges, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 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, ConComCheckerStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2025-03-17 06:34:54,166 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE