./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-theta/unwind2-nondet.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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_1.5.800.v20200727-1323.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-theta/unwind2-nondet.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 797a9e1bf9dc9387a2e0877719131f75c1f5b0797aa4bcc7c94038568bc56c2d --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 19:36:58,625 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 19:36:58,710 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 19:36:58,717 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 19:36:58,718 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 19:36:58,752 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 19:36:58,752 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 19:36:58,753 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 19:36:58,753 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 19:36:58,754 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 19:36:58,754 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 19:36:58,755 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 19:36:58,755 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 19:36:58,756 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 19:36:58,756 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 19:36:58,757 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 19:36:58,757 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 19:36:58,757 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 19:36:58,758 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 19:36:58,758 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 19:36:58,759 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 19:36:58,762 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 19:36:58,763 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 19:36:58,763 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 19:36:58,763 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 19:36:58,764 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 19:36:58,764 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 19:36:58,764 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 19:36:58,765 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 19:36:58,765 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 19:36:58,765 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 19:36:58,765 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 19:36:58,766 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 19:36:58,766 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 19:36:58,768 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 19:36:58,768 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 19:36:58,769 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 19:36:58,769 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 19:36:58,769 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 19:36:58,770 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 19:36:58,770 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 19:36:58,770 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 19:36:58,771 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 797a9e1bf9dc9387a2e0877719131f75c1f5b0797aa4bcc7c94038568bc56c2d [2024-11-16 19:36:59,066 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 19:36:59,114 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 19:36:59,116 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 19:36:59,118 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 19:36:59,118 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 19:36:59,119 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-theta/unwind2-nondet.i [2024-11-16 19:37:00,699 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 19:37:00,931 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 19:37:00,932 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-theta/unwind2-nondet.i [2024-11-16 19:37:00,951 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6fc914db/6db7866bcbbb45b782365f13b1587eab/FLAGa278eefd1 [2024-11-16 19:37:00,967 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6fc914db/6db7866bcbbb45b782365f13b1587eab [2024-11-16 19:37:00,971 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 19:37:00,973 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 19:37:00,974 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 19:37:00,975 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 19:37:00,980 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 19:37:00,981 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:37:00" (1/1) ... [2024-11-16 19:37:00,982 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a81bff1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:37:00, skipping insertion in model container [2024-11-16 19:37:00,982 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:37:00" (1/1) ... [2024-11-16 19:37:01,024 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 19:37:01,390 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-theta/unwind2-nondet.i[33026,33039] [2024-11-16 19:37:01,417 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 19:37:01,430 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 19:37:01,486 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-theta/unwind2-nondet.i[33026,33039] [2024-11-16 19:37:01,496 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 19:37:01,546 INFO L204 MainTranslator]: Completed translation [2024-11-16 19:37:01,546 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:37:01 WrapperNode [2024-11-16 19:37:01,547 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 19:37:01,548 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 19:37:01,549 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 19:37:01,549 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 19:37:01,557 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:37:01" (1/1) ... [2024-11-16 19:37:01,575 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:37:01" (1/1) ... [2024-11-16 19:37:01,601 INFO L138 Inliner]: procedures = 169, calls = 11, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 82 [2024-11-16 19:37:01,602 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 19:37:01,603 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 19:37:01,603 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 19:37:01,603 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 19:37:01,642 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:37:01" (1/1) ... [2024-11-16 19:37:01,643 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:37:01" (1/1) ... [2024-11-16 19:37:01,645 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:37:01" (1/1) ... [2024-11-16 19:37:01,667 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]. [2024-11-16 19:37:01,668 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:37:01" (1/1) ... [2024-11-16 19:37:01,668 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:37:01" (1/1) ... [2024-11-16 19:37:01,672 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:37:01" (1/1) ... [2024-11-16 19:37:01,673 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:37:01" (1/1) ... [2024-11-16 19:37:01,674 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:37:01" (1/1) ... [2024-11-16 19:37:01,675 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:37:01" (1/1) ... [2024-11-16 19:37:01,678 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 19:37:01,681 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 19:37:01,681 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 19:37:01,681 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 19:37:01,682 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:37:01" (1/1) ... [2024-11-16 19:37:01,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 19:37:01,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:37:01,727 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) [2024-11-16 19:37:01,730 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 [2024-11-16 19:37:01,771 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 19:37:01,772 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2024-11-16 19:37:01,772 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2024-11-16 19:37:01,772 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2024-11-16 19:37:01,772 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2024-11-16 19:37:01,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 19:37:01,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 19:37:01,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 19:37:01,775 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-16 19:37:01,899 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 19:37:01,901 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 19:37:02,050 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-16 19:37:02,050 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 19:37:02,160 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 19:37:02,160 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 19:37:02,161 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:37:02 BoogieIcfgContainer [2024-11-16 19:37:02,161 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 19:37:02,163 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 19:37:02,165 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 19:37:02,168 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 19:37:02,169 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 07:37:00" (1/3) ... [2024-11-16 19:37:02,170 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@322108a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:37:02, skipping insertion in model container [2024-11-16 19:37:02,170 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:37:01" (2/3) ... [2024-11-16 19:37:02,171 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@322108a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:37:02, skipping insertion in model container [2024-11-16 19:37:02,172 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:37:02" (3/3) ... [2024-11-16 19:37:02,173 INFO L112 eAbstractionObserver]: Analyzing ICFG unwind2-nondet.i [2024-11-16 19:37:02,190 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 19:37:02,191 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-16 19:37:02,191 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-16 19:37:02,233 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-16 19:37:02,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 36 transitions, 86 flow [2024-11-16 19:37:02,303 INFO L124 PetriNetUnfolderBase]: 6/34 cut-off events. [2024-11-16 19:37:02,304 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-16 19:37:02,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 34 events. 6/34 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 47 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 31. Up to 2 conditions per place. [2024-11-16 19:37:02,310 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 36 transitions, 86 flow [2024-11-16 19:37:02,314 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 33 places, 32 transitions, 73 flow [2024-11-16 19:37:02,323 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 19:37:02,330 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;@10427c0c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 19:37:02,330 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-16 19:37:02,343 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-16 19:37:02,346 INFO L124 PetriNetUnfolderBase]: 5/25 cut-off events. [2024-11-16 19:37:02,346 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-16 19:37:02,346 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:37:02,347 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:37:02,348 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting f1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-16 19:37:02,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:37:02,354 INFO L85 PathProgramCache]: Analyzing trace with hash -624422108, now seen corresponding path program 1 times [2024-11-16 19:37:02,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:37:02,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198561176] [2024-11-16 19:37:02,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:37:02,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:37:02,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:37:02,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:37:02,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:37:02,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198561176] [2024-11-16 19:37:02,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198561176] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:37:02,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:37:02,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 19:37:02,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772676088] [2024-11-16 19:37:02,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:37:02,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 19:37:02,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:37:02,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 19:37:02,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 19:37:02,639 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-11-16 19:37:02,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 32 transitions, 73 flow. Second operand has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:37:02,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:37:02,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-11-16 19:37:02,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:37:02,799 INFO L124 PetriNetUnfolderBase]: 169/362 cut-off events. [2024-11-16 19:37:02,800 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2024-11-16 19:37:02,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 678 conditions, 362 events. 169/362 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1535 event pairs, 138 based on Foata normal form. 62/411 useless extension candidates. Maximal degree in co-relation 633. Up to 290 conditions per place. [2024-11-16 19:37:02,809 INFO L140 encePairwiseOnDemand]: 32/36 looper letters, 20 selfloop transitions, 0 changer transitions 0/28 dead transitions. [2024-11-16 19:37:02,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 28 transitions, 105 flow [2024-11-16 19:37:02,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 19:37:02,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-16 19:37:02,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 44 transitions. [2024-11-16 19:37:02,822 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6111111111111112 [2024-11-16 19:37:02,824 INFO L175 Difference]: Start difference. First operand has 33 places, 32 transitions, 73 flow. Second operand 2 states and 44 transitions. [2024-11-16 19:37:02,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 28 transitions, 105 flow [2024-11-16 19:37:02,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 28 transitions, 100 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-16 19:37:02,831 INFO L231 Difference]: Finished difference. Result has 31 places, 28 transitions, 60 flow [2024-11-16 19:37:02,833 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=60, PETRI_PLACES=31, PETRI_TRANSITIONS=28} [2024-11-16 19:37:02,837 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, -2 predicate places. [2024-11-16 19:37:02,839 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 28 transitions, 60 flow [2024-11-16 19:37:02,840 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:37:02,840 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:37:02,841 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:37:02,841 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 19:37:02,841 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting f1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-16 19:37:02,842 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:37:02,842 INFO L85 PathProgramCache]: Analyzing trace with hash 2116766255, now seen corresponding path program 1 times [2024-11-16 19:37:02,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:37:02,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792831632] [2024-11-16 19:37:02,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:37:02,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:37:02,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:37:03,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:37:03,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:37:03,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792831632] [2024-11-16 19:37:03,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792831632] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:37:03,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:37:03,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 19:37:03,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076678747] [2024-11-16 19:37:03,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:37:03,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-16 19:37:03,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:37:03,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-16 19:37:03,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-16 19:37:03,255 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-11-16 19:37:03,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 28 transitions, 60 flow. Second operand has 8 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:37:03,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:37:03,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-11-16 19:37:03,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:37:03,826 INFO L124 PetriNetUnfolderBase]: 527/1032 cut-off events. [2024-11-16 19:37:03,827 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-11-16 19:37:03,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1960 conditions, 1032 events. 527/1032 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 5720 event pairs, 50 based on Foata normal form. 0/950 useless extension candidates. Maximal degree in co-relation 1957. Up to 251 conditions per place. [2024-11-16 19:37:03,839 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 99 selfloop transitions, 21 changer transitions 6/132 dead transitions. [2024-11-16 19:37:03,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 132 transitions, 535 flow [2024-11-16 19:37:03,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-16 19:37:03,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-16 19:37:03,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 232 transitions. [2024-11-16 19:37:03,842 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49572649572649574 [2024-11-16 19:37:03,842 INFO L175 Difference]: Start difference. First operand has 31 places, 28 transitions, 60 flow. Second operand 13 states and 232 transitions. [2024-11-16 19:37:03,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 132 transitions, 535 flow [2024-11-16 19:37:03,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 132 transitions, 535 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-16 19:37:03,849 INFO L231 Difference]: Finished difference. Result has 51 places, 46 transitions, 197 flow [2024-11-16 19:37:03,849 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=197, PETRI_PLACES=51, PETRI_TRANSITIONS=46} [2024-11-16 19:37:03,850 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 18 predicate places. [2024-11-16 19:37:03,850 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 46 transitions, 197 flow [2024-11-16 19:37:03,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:37:03,851 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:37:03,851 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:37:03,851 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 19:37:03,851 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting f1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-16 19:37:03,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:37:03,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1577308532, now seen corresponding path program 1 times [2024-11-16 19:37:03,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:37:03,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884221046] [2024-11-16 19:37:03,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:37:03,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:37:03,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:37:04,027 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:37:04,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:37:04,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884221046] [2024-11-16 19:37:04,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884221046] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:37:04,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005863481] [2024-11-16 19:37:04,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:37:04,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:37:04,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:37:04,032 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:37:04,034 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 19:37:04,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:37:04,100 INFO L255 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-16 19:37:04,105 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:37:04,198 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:37:04,198 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 19:37:04,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2005863481] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:37:04,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 19:37:04,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 9 [2024-11-16 19:37:04,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576139613] [2024-11-16 19:37:04,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:37:04,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 19:37:04,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:37:04,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 19:37:04,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-16 19:37:04,209 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-11-16 19:37:04,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 46 transitions, 197 flow. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:37:04,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:37:04,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-11-16 19:37:04,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:37:04,668 INFO L124 PetriNetUnfolderBase]: 502/1058 cut-off events. [2024-11-16 19:37:04,668 INFO L125 PetriNetUnfolderBase]: For 645/645 co-relation queries the response was YES. [2024-11-16 19:37:04,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2654 conditions, 1058 events. 502/1058 cut-off events. For 645/645 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 6251 event pairs, 99 based on Foata normal form. 26/1044 useless extension candidates. Maximal degree in co-relation 2642. Up to 227 conditions per place. [2024-11-16 19:37:04,677 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 97 selfloop transitions, 18 changer transitions 5/129 dead transitions. [2024-11-16 19:37:04,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 129 transitions, 656 flow [2024-11-16 19:37:04,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-16 19:37:04,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-16 19:37:04,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 217 transitions. [2024-11-16 19:37:04,683 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.547979797979798 [2024-11-16 19:37:04,684 INFO L175 Difference]: Start difference. First operand has 51 places, 46 transitions, 197 flow. Second operand 11 states and 217 transitions. [2024-11-16 19:37:04,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 129 transitions, 656 flow [2024-11-16 19:37:04,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 129 transitions, 655 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-16 19:37:04,698 INFO L231 Difference]: Finished difference. Result has 62 places, 54 transitions, 297 flow [2024-11-16 19:37:04,698 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=297, PETRI_PLACES=62, PETRI_TRANSITIONS=54} [2024-11-16 19:37:04,699 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 29 predicate places. [2024-11-16 19:37:04,700 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 54 transitions, 297 flow [2024-11-16 19:37:04,700 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:37:04,700 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:37:04,701 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:37:04,719 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-16 19:37:04,904 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:37:04,905 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-16 19:37:04,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:37:04,905 INFO L85 PathProgramCache]: Analyzing trace with hash 170429174, now seen corresponding path program 1 times [2024-11-16 19:37:04,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:37:04,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637325372] [2024-11-16 19:37:04,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:37:04,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:37:04,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:37:05,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:37:05,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:37:05,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637325372] [2024-11-16 19:37:05,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637325372] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:37:05,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:37:05,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 19:37:05,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211692322] [2024-11-16 19:37:05,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:37:05,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 19:37:05,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:37:05,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 19:37:05,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-16 19:37:05,012 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-11-16 19:37:05,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 54 transitions, 297 flow. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:37:05,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:37:05,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-11-16 19:37:05,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:37:05,251 INFO L124 PetriNetUnfolderBase]: 565/1226 cut-off events. [2024-11-16 19:37:05,252 INFO L125 PetriNetUnfolderBase]: For 1620/1674 co-relation queries the response was YES. [2024-11-16 19:37:05,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3241 conditions, 1226 events. 565/1226 cut-off events. For 1620/1674 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 7579 event pairs, 139 based on Foata normal form. 14/1175 useless extension candidates. Maximal degree in co-relation 3227. Up to 494 conditions per place. [2024-11-16 19:37:05,261 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 70 selfloop transitions, 17 changer transitions 1/101 dead transitions. [2024-11-16 19:37:05,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 101 transitions, 728 flow [2024-11-16 19:37:05,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 19:37:05,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-16 19:37:05,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 125 transitions. [2024-11-16 19:37:05,265 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49603174603174605 [2024-11-16 19:37:05,265 INFO L175 Difference]: Start difference. First operand has 62 places, 54 transitions, 297 flow. Second operand 7 states and 125 transitions. [2024-11-16 19:37:05,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 101 transitions, 728 flow [2024-11-16 19:37:05,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 101 transitions, 672 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-11-16 19:37:05,278 INFO L231 Difference]: Finished difference. Result has 67 places, 59 transitions, 356 flow [2024-11-16 19:37:05,279 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=356, PETRI_PLACES=67, PETRI_TRANSITIONS=59} [2024-11-16 19:37:05,280 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 34 predicate places. [2024-11-16 19:37:05,280 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 59 transitions, 356 flow [2024-11-16 19:37:05,281 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:37:05,281 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:37:05,281 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:37:05,281 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 19:37:05,281 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting f1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-16 19:37:05,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:37:05,282 INFO L85 PathProgramCache]: Analyzing trace with hash -322335263, now seen corresponding path program 1 times [2024-11-16 19:37:05,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:37:05,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775991354] [2024-11-16 19:37:05,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:37:05,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:37:05,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:37:05,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:37:05,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:37:05,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775991354] [2024-11-16 19:37:05,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775991354] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:37:05,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:37:05,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 19:37:05,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386297921] [2024-11-16 19:37:05,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:37:05,363 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 19:37:05,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:37:05,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 19:37:05,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-16 19:37:05,367 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-11-16 19:37:05,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 59 transitions, 356 flow. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:37:05,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:37:05,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-11-16 19:37:05,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:37:05,663 INFO L124 PetriNetUnfolderBase]: 601/1298 cut-off events. [2024-11-16 19:37:05,664 INFO L125 PetriNetUnfolderBase]: For 1821/1874 co-relation queries the response was YES. [2024-11-16 19:37:05,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3795 conditions, 1298 events. 601/1298 cut-off events. For 1821/1874 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 8104 event pairs, 157 based on Foata normal form. 14/1304 useless extension candidates. Maximal degree in co-relation 3779. Up to 548 conditions per place. [2024-11-16 19:37:05,677 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 62 selfloop transitions, 16 changer transitions 1/88 dead transitions. [2024-11-16 19:37:05,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 88 transitions, 652 flow [2024-11-16 19:37:05,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 19:37:05,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-16 19:37:05,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 106 transitions. [2024-11-16 19:37:05,679 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49074074074074076 [2024-11-16 19:37:05,679 INFO L175 Difference]: Start difference. First operand has 67 places, 59 transitions, 356 flow. Second operand 6 states and 106 transitions. [2024-11-16 19:37:05,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 88 transitions, 652 flow [2024-11-16 19:37:05,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 88 transitions, 636 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-16 19:37:05,694 INFO L231 Difference]: Finished difference. Result has 70 places, 60 transitions, 384 flow [2024-11-16 19:37:05,695 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=384, PETRI_PLACES=70, PETRI_TRANSITIONS=60} [2024-11-16 19:37:05,699 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 37 predicate places. [2024-11-16 19:37:05,699 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 60 transitions, 384 flow [2024-11-16 19:37:05,699 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:37:05,700 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:37:05,700 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:37:05,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 19:37:05,700 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-16 19:37:05,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:37:05,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1357170337, now seen corresponding path program 1 times [2024-11-16 19:37:05,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:37:05,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378961225] [2024-11-16 19:37:05,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:37:05,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:37:05,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-16 19:37:05,718 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-16 19:37:05,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-16 19:37:05,746 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-16 19:37:05,747 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-16 19:37:05,748 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location f2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2024-11-16 19:37:05,750 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 6 remaining) [2024-11-16 19:37:05,750 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2024-11-16 19:37:05,751 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2024-11-16 19:37:05,751 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2024-11-16 19:37:05,751 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2024-11-16 19:37:05,752 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 19:37:05,752 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-11-16 19:37:05,792 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-16 19:37:05,792 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-16 19:37:05,798 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 07:37:05 BasicIcfg [2024-11-16 19:37:05,798 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-16 19:37:05,799 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-16 19:37:05,799 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-16 19:37:05,799 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-16 19:37:05,799 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:37:02" (3/4) ... [2024-11-16 19:37:05,800 INFO L137 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-16 19:37:05,853 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-16 19:37:05,853 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-16 19:37:05,854 INFO L158 Benchmark]: Toolchain (without parser) took 4881.40ms. Allocated memory was 142.6MB in the beginning and 247.5MB in the end (delta: 104.9MB). Free memory was 86.9MB in the beginning and 152.9MB in the end (delta: -66.0MB). Peak memory consumption was 40.3MB. Max. memory is 16.1GB. [2024-11-16 19:37:05,854 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 142.6MB. Free memory was 106.1MB in the beginning and 106.1MB in the end (delta: 24.6kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-16 19:37:05,855 INFO L158 Benchmark]: CACSL2BoogieTranslator took 573.22ms. Allocated memory is still 142.6MB. Free memory was 86.9MB in the beginning and 64.3MB in the end (delta: 22.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-11-16 19:37:05,855 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.72ms. Allocated memory is still 142.6MB. Free memory was 64.3MB in the beginning and 62.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-16 19:37:05,856 INFO L158 Benchmark]: Boogie Preprocessor took 76.78ms. Allocated memory was 142.6MB in the beginning and 190.8MB in the end (delta: 48.2MB). Free memory was 62.2MB in the beginning and 159.9MB in the end (delta: -97.7MB). Peak memory consumption was 7.3MB. Max. memory is 16.1GB. [2024-11-16 19:37:05,856 INFO L158 Benchmark]: IcfgBuilder took 480.66ms. Allocated memory is still 190.8MB. Free memory was 159.8MB in the beginning and 139.5MB in the end (delta: 20.3MB). Peak memory consumption was 25.5MB. Max. memory is 16.1GB. [2024-11-16 19:37:05,856 INFO L158 Benchmark]: TraceAbstraction took 3634.45ms. Allocated memory was 190.8MB in the beginning and 247.5MB in the end (delta: 56.6MB). Free memory was 138.4MB in the beginning and 156.1MB in the end (delta: -17.6MB). Peak memory consumption was 39.0MB. Max. memory is 16.1GB. [2024-11-16 19:37:05,857 INFO L158 Benchmark]: Witness Printer took 54.94ms. Allocated memory is still 247.5MB. Free memory was 156.1MB in the beginning and 152.9MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-16 19:37:05,858 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 142.6MB. Free memory was 106.1MB in the beginning and 106.1MB in the end (delta: 24.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 573.22ms. Allocated memory is still 142.6MB. Free memory was 86.9MB in the beginning and 64.3MB in the end (delta: 22.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 54.72ms. Allocated memory is still 142.6MB. Free memory was 64.3MB in the beginning and 62.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 76.78ms. Allocated memory was 142.6MB in the beginning and 190.8MB in the end (delta: 48.2MB). Free memory was 62.2MB in the beginning and 159.9MB in the end (delta: -97.7MB). Peak memory consumption was 7.3MB. Max. memory is 16.1GB. * IcfgBuilder took 480.66ms. Allocated memory is still 190.8MB. Free memory was 159.8MB in the beginning and 139.5MB in the end (delta: 20.3MB). Peak memory consumption was 25.5MB. Max. memory is 16.1GB. * TraceAbstraction took 3634.45ms. Allocated memory was 190.8MB in the beginning and 247.5MB in the end (delta: 56.6MB). Free memory was 138.4MB in the beginning and 156.1MB in the end (delta: -17.6MB). Peak memory consumption was 39.0MB. Max. memory is 16.1GB. * Witness Printer took 54.94ms. Allocated memory is still 247.5MB. Free memory was 156.1MB in the beginning and 152.9MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 753]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L754] 0 int _N; [L755] 0 atomic_int limit; [L775] 0 _N = __VERIFIER_nondet_int() [L776] CALL 0 assume_abort_if_not(0 <= _N && _N <= 0x7fffffff - 1) [L750] COND FALSE 0 !(!cond) [L776] RET 0 assume_abort_if_not(0 <= _N && _N <= 0x7fffffff - 1) [L777] 0 pthread_t t1, t2; [L778] FCALL, FORK 0 pthread_create(&t1, 0, f1, 0) VAL [_N=0, limit=0, t1=-1] [L757] 1 int i, bound; [L758] 1 int lim = _N; VAL [\old(arg)={0:0}, _N=0, arg={0:0}, lim=0, limit=0] [L779] FCALL, FORK 0 pthread_create(&t2, 0, f2, 0) VAL [_N=0, limit=0, t1=-1, t2=0] [L766] 2 int i, bound; [L767] 2 int lim = _N + 1; VAL [\old(arg)={0:0}, _N=0, arg={0:0}, lim=1, limit=0] [L768] 2 limit = lim VAL [\old(arg)={0:0}, _N=0, arg={0:0}, lim=1, limit=1] [L759] 1 limit = lim VAL [\old(arg)={0:0}, _N=0, arg={0:0}, lim=0, limit=0] [L769] 2 bound = limit [L770] 2 i = 0 VAL [\old(arg)={0:0}, _N=0, arg={0:0}, bound=0, i=0, lim=1, limit=0] [L770] COND FALSE 2 !(i < bound) VAL [\old(arg)={0:0}, _N=0, arg={0:0}, bound=0, i=0, lim=1, limit=0] [L771] CALL 2 __VERIFIER_assert(i == lim) [L753] COND TRUE 2 !expression VAL [\old(expression)=0, _N=0, expression=0, limit=0] [L753] 2 reach_error() VAL [\old(expression)=0, _N=0, expression=0, limit=0] - UnprovableResult [Line: 778]: 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. - UnprovableResult [Line: 779]: 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. - UnprovableResult [Line: 753]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 55 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.5s, OverallIterations: 6, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 390 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 386 mSDsluCounter, 35 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 30 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 877 IncrementalHoareTripleChecker+Invalid, 878 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 5 mSDtfsCounter, 877 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 62 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=384occurred in iteration=5, InterpolantAutomatonStates: 39, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 83 NumberOfCodeBlocks, 83 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 63 ConstructedInterpolants, 0 QuantifiedInterpolants, 223 SizeOfPredicates, 5 NumberOfNonLiveVariables, 61 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 2/4 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-11-16 19:37:05,885 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