./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-theta/unwind1-1.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/unwind1-1.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 369675afdce9f24a16d648c2af0379dafe84b15f75fb11d38697f731d0b5b69e --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 19:36:47,776 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 19:36:47,849 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 19:36:47,855 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 19:36:47,855 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 19:36:47,886 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 19:36:47,888 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 19:36:47,889 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 19:36:47,890 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 19:36:47,891 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 19:36:47,892 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 19:36:47,892 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 19:36:47,893 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 19:36:47,895 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 19:36:47,895 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 19:36:47,896 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 19:36:47,896 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 19:36:47,896 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 19:36:47,896 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 19:36:47,897 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 19:36:47,897 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 19:36:47,900 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 19:36:47,901 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 19:36:47,901 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 19:36:47,901 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 19:36:47,901 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 19:36:47,902 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 19:36:47,902 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 19:36:47,902 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 19:36:47,902 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 19:36:47,903 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 19:36:47,903 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 19:36:47,903 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 19:36:47,903 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 19:36:47,903 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 19:36:47,904 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 19:36:47,904 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 19:36:47,904 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 19:36:47,904 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 19:36:47,905 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 19:36:47,905 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 19:36:47,905 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 19:36:47,906 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 369675afdce9f24a16d648c2af0379dafe84b15f75fb11d38697f731d0b5b69e [2024-11-16 19:36:48,166 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 19:36:48,200 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 19:36:48,205 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 19:36:48,206 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 19:36:48,207 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 19:36:48,208 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-theta/unwind1-1.i [2024-11-16 19:36:49,705 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 19:36:50,010 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 19:36:50,011 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-theta/unwind1-1.i [2024-11-16 19:36:50,039 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/834330c1b/e2a3671569434d56be966116ba27bd7c/FLAG787e6c09c [2024-11-16 19:36:50,299 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/834330c1b/e2a3671569434d56be966116ba27bd7c [2024-11-16 19:36:50,302 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 19:36:50,303 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 19:36:50,305 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 19:36:50,305 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 19:36:50,310 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 19:36:50,311 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:36:50" (1/1) ... [2024-11-16 19:36:50,312 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1259d12c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:36:50, skipping insertion in model container [2024-11-16 19:36:50,312 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:36:50" (1/1) ... [2024-11-16 19:36:50,356 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 19:36:50,778 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/unwind1-1.i[33026,33039] [2024-11-16 19:36:50,802 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 19:36:50,811 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 19:36:50,866 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/unwind1-1.i[33026,33039] [2024-11-16 19:36:50,871 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 19:36:50,906 INFO L204 MainTranslator]: Completed translation [2024-11-16 19:36:50,907 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:36:50 WrapperNode [2024-11-16 19:36:50,907 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 19:36:50,908 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 19:36:50,908 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 19:36:50,908 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 19:36:50,915 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:36:50" (1/1) ... [2024-11-16 19:36:50,931 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:36:50" (1/1) ... [2024-11-16 19:36:50,951 INFO L138 Inliner]: procedures = 169, calls = 10, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 53 [2024-11-16 19:36:50,951 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 19:36:50,952 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 19:36:50,952 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 19:36:50,952 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 19:36:50,962 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:36:50" (1/1) ... [2024-11-16 19:36:50,963 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:36:50" (1/1) ... [2024-11-16 19:36:50,965 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:36:50" (1/1) ... [2024-11-16 19:36:50,978 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 19:36:50,978 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:36:50" (1/1) ... [2024-11-16 19:36:50,979 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:36:50" (1/1) ... [2024-11-16 19:36:50,985 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:36:50" (1/1) ... [2024-11-16 19:36:50,986 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:36:50" (1/1) ... [2024-11-16 19:36:50,988 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:36:50" (1/1) ... [2024-11-16 19:36:50,989 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:36:50" (1/1) ... [2024-11-16 19:36:50,991 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 19:36:50,992 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 19:36:50,992 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 19:36:50,992 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 19:36:50,993 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:36:50" (1/1) ... [2024-11-16 19:36:50,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 19:36:51,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:36:51,024 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 19:36:51,026 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 19:36:51,068 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 19:36:51,068 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2024-11-16 19:36:51,069 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2024-11-16 19:36:51,069 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2024-11-16 19:36:51,069 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2024-11-16 19:36:51,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 19:36:51,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 19:36:51,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 19:36:51,071 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 19:36:51,198 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 19:36:51,200 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 19:36:51,339 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-16 19:36:51,339 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 19:36:51,436 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 19:36:51,436 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 19:36:51,436 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:36:51 BoogieIcfgContainer [2024-11-16 19:36:51,437 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 19:36:51,442 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 19:36:51,442 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 19:36:51,446 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 19:36:51,446 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 07:36:50" (1/3) ... [2024-11-16 19:36:51,447 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15de6993 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:36:51, skipping insertion in model container [2024-11-16 19:36:51,448 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:36:50" (2/3) ... [2024-11-16 19:36:51,448 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15de6993 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:36:51, skipping insertion in model container [2024-11-16 19:36:51,450 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:36:51" (3/3) ... [2024-11-16 19:36:51,451 INFO L112 eAbstractionObserver]: Analyzing ICFG unwind1-1.i [2024-11-16 19:36:51,468 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 19:36:51,468 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 19:36:51,468 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-16 19:36:51,521 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-16 19:36:51,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 30 places, 27 transitions, 68 flow [2024-11-16 19:36:51,593 INFO L124 PetriNetUnfolderBase]: 4/25 cut-off events. [2024-11-16 19:36:51,593 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-16 19:36:51,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 25 events. 4/25 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 32 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 22. Up to 2 conditions per place. [2024-11-16 19:36:51,597 INFO L82 GeneralOperation]: Start removeDead. Operand has 30 places, 27 transitions, 68 flow [2024-11-16 19:36:51,602 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 26 places, 23 transitions, 55 flow [2024-11-16 19:36:51,620 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 19:36:51,627 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;@1f5d98f7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 19:36:51,628 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-16 19:36:51,643 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-16 19:36:51,643 INFO L124 PetriNetUnfolderBase]: 4/21 cut-off events. [2024-11-16 19:36:51,643 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-16 19:36:51,643 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:36:51,644 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:36:51,645 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-16 19:36:51,652 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:36:51,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1750081885, now seen corresponding path program 1 times [2024-11-16 19:36:51,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:36:51,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394354398] [2024-11-16 19:36:51,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:36:51,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:36:51,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:36:51,906 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 19:36:51,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:36:51,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394354398] [2024-11-16 19:36:51,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394354398] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:36:51,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:36:51,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 19:36:51,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618317773] [2024-11-16 19:36:51,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:36:51,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 19:36:51,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:36:51,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 19:36:51,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 19:36:51,956 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2024-11-16 19:36:51,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 23 transitions, 55 flow. Second operand has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 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 19:36:51,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:36:51,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2024-11-16 19:36:51,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:36:52,081 INFO L124 PetriNetUnfolderBase]: 108/228 cut-off events. [2024-11-16 19:36:52,083 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-11-16 19:36:52,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 437 conditions, 228 events. 108/228 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 845 event pairs, 83 based on Foata normal form. 26/235 useless extension candidates. Maximal degree in co-relation 402. Up to 187 conditions per place. [2024-11-16 19:36:52,092 INFO L140 encePairwiseOnDemand]: 25/27 looper letters, 16 selfloop transitions, 0 changer transitions 1/21 dead transitions. [2024-11-16 19:36:52,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 21 transitions, 85 flow [2024-11-16 19:36:52,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 19:36:52,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-16 19:36:52,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 31 transitions. [2024-11-16 19:36:52,127 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5740740740740741 [2024-11-16 19:36:52,129 INFO L175 Difference]: Start difference. First operand has 26 places, 23 transitions, 55 flow. Second operand 2 states and 31 transitions. [2024-11-16 19:36:52,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 21 transitions, 85 flow [2024-11-16 19:36:52,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 21 transitions, 80 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-16 19:36:52,134 INFO L231 Difference]: Finished difference. Result has 24 places, 20 transitions, 44 flow [2024-11-16 19:36:52,136 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=44, PETRI_PLACES=24, PETRI_TRANSITIONS=20} [2024-11-16 19:36:52,140 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, -2 predicate places. [2024-11-16 19:36:52,140 INFO L471 AbstractCegarLoop]: Abstraction has has 24 places, 20 transitions, 44 flow [2024-11-16 19:36:52,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 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 19:36:52,140 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:36:52,141 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:36:52,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 19:36:52,141 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-16 19:36:52,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:36:52,142 INFO L85 PathProgramCache]: Analyzing trace with hash 1581051497, now seen corresponding path program 1 times [2024-11-16 19:36:52,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:36:52,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809961659] [2024-11-16 19:36:52,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:36:52,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:36:52,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:36:52,387 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 19:36:52,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:36:52,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809961659] [2024-11-16 19:36:52,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809961659] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:36:52,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:36:52,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 19:36:52,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630838622] [2024-11-16 19:36:52,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:36:52,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 19:36:52,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:36:52,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 19:36:52,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 19:36:52,398 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-16 19:36:52,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 20 transitions, 44 flow. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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 19:36:52,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:36:52,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-16 19:36:52,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:36:52,604 INFO L124 PetriNetUnfolderBase]: 165/341 cut-off events. [2024-11-16 19:36:52,604 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-11-16 19:36:52,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 639 conditions, 341 events. 165/341 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1378 event pairs, 66 based on Foata normal form. 0/305 useless extension candidates. Maximal degree in co-relation 636. Up to 154 conditions per place. [2024-11-16 19:36:52,608 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 22 selfloop transitions, 3 changer transitions 19/47 dead transitions. [2024-11-16 19:36:52,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 47 transitions, 189 flow [2024-11-16 19:36:52,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 19:36:52,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-16 19:36:52,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 75 transitions. [2024-11-16 19:36:52,611 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46296296296296297 [2024-11-16 19:36:52,611 INFO L175 Difference]: Start difference. First operand has 24 places, 20 transitions, 44 flow. Second operand 6 states and 75 transitions. [2024-11-16 19:36:52,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 47 transitions, 189 flow [2024-11-16 19:36:52,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 47 transitions, 189 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-16 19:36:52,614 INFO L231 Difference]: Finished difference. Result has 30 places, 20 transitions, 58 flow [2024-11-16 19:36:52,614 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=58, PETRI_PLACES=30, PETRI_TRANSITIONS=20} [2024-11-16 19:36:52,615 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 4 predicate places. [2024-11-16 19:36:52,616 INFO L471 AbstractCegarLoop]: Abstraction has has 30 places, 20 transitions, 58 flow [2024-11-16 19:36:52,617 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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 19:36:52,617 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:36:52,617 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:36:52,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 19:36:52,617 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-16 19:36:52,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:36:52,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1003116698, now seen corresponding path program 1 times [2024-11-16 19:36:52,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:36:52,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059934372] [2024-11-16 19:36:52,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:36:52,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:36:52,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:36:52,738 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 19:36:52,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:36:52,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059934372] [2024-11-16 19:36:52,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059934372] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:36:52,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:36:52,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 19:36:52,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063063649] [2024-11-16 19:36:52,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:36:52,740 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 19:36:52,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:36:52,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 19:36:52,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 19:36:52,745 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2024-11-16 19:36:52,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 20 transitions, 58 flow. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 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 19:36:52,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:36:52,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2024-11-16 19:36:52,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:36:52,858 INFO L124 PetriNetUnfolderBase]: 58/154 cut-off events. [2024-11-16 19:36:52,859 INFO L125 PetriNetUnfolderBase]: For 64/64 co-relation queries the response was YES. [2024-11-16 19:36:52,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 329 conditions, 154 events. 58/154 cut-off events. For 64/64 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 530 event pairs, 21 based on Foata normal form. 13/160 useless extension candidates. Maximal degree in co-relation 323. Up to 65 conditions per place. [2024-11-16 19:36:52,860 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 17 selfloop transitions, 3 changer transitions 10/33 dead transitions. [2024-11-16 19:36:52,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 33 transitions, 150 flow [2024-11-16 19:36:52,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 19:36:52,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-16 19:36:52,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 61 transitions. [2024-11-16 19:36:52,862 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45185185185185184 [2024-11-16 19:36:52,862 INFO L175 Difference]: Start difference. First operand has 30 places, 20 transitions, 58 flow. Second operand 5 states and 61 transitions. [2024-11-16 19:36:52,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 33 transitions, 150 flow [2024-11-16 19:36:52,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 33 transitions, 143 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-16 19:36:52,864 INFO L231 Difference]: Finished difference. Result has 31 places, 20 transitions, 67 flow [2024-11-16 19:36:52,865 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=67, PETRI_PLACES=31, PETRI_TRANSITIONS=20} [2024-11-16 19:36:52,865 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 5 predicate places. [2024-11-16 19:36:52,866 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 20 transitions, 67 flow [2024-11-16 19:36:52,866 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 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 19:36:52,866 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:36:52,866 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:36:52,866 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 19:36:52,867 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-16 19:36:52,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:36:52,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1287121078, now seen corresponding path program 1 times [2024-11-16 19:36:52,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:36:52,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452928046] [2024-11-16 19:36:52,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:36:52,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:36:52,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:36:53,049 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 19:36:53,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:36:53,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452928046] [2024-11-16 19:36:53,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452928046] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:36:53,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636836913] [2024-11-16 19:36:53,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:36:53,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:36:53,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:36:53,055 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 19:36:53,057 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 19:36:53,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:36:53,124 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 19:36:53,129 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:36:53,315 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 19:36:53,316 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:36:53,379 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 19:36:53,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [636836913] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:36:53,380 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:36:53,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-11-16 19:36:53,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129385598] [2024-11-16 19:36:53,381 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:36:53,381 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-16 19:36:53,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:36:53,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-16 19:36:53,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-16 19:36:53,395 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-16 19:36:53,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 20 transitions, 67 flow. Second operand has 10 states, 10 states have (on average 6.8) internal successors, (68), 10 states have internal predecessors, (68), 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 19:36:53,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:36:53,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-16 19:36:53,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:36:53,503 INFO L124 PetriNetUnfolderBase]: 54/143 cut-off events. [2024-11-16 19:36:53,504 INFO L125 PetriNetUnfolderBase]: For 73/73 co-relation queries the response was YES. [2024-11-16 19:36:53,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 336 conditions, 143 events. 54/143 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 422 event pairs, 30 based on Foata normal form. 5/143 useless extension candidates. Maximal degree in co-relation 328. Up to 80 conditions per place. [2024-11-16 19:36:53,506 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 20 selfloop transitions, 4 changer transitions 4/31 dead transitions. [2024-11-16 19:36:53,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 31 transitions, 152 flow [2024-11-16 19:36:53,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 19:36:53,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-16 19:36:53,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 59 transitions. [2024-11-16 19:36:53,508 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36419753086419754 [2024-11-16 19:36:53,508 INFO L175 Difference]: Start difference. First operand has 31 places, 20 transitions, 67 flow. Second operand 6 states and 59 transitions. [2024-11-16 19:36:53,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 31 transitions, 152 flow [2024-11-16 19:36:53,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 31 transitions, 142 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-11-16 19:36:53,510 INFO L231 Difference]: Finished difference. Result has 32 places, 21 transitions, 77 flow [2024-11-16 19:36:53,511 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=57, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=77, PETRI_PLACES=32, PETRI_TRANSITIONS=21} [2024-11-16 19:36:53,511 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 6 predicate places. [2024-11-16 19:36:53,511 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 21 transitions, 77 flow [2024-11-16 19:36:53,512 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 10 states have internal predecessors, (68), 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 19:36:53,512 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:36:53,512 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:36:53,536 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 19:36:53,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:36:53,713 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-16 19:36:53,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:36:53,714 INFO L85 PathProgramCache]: Analyzing trace with hash 52042759, now seen corresponding path program 2 times [2024-11-16 19:36:53,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:36:53,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309693281] [2024-11-16 19:36:53,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:36:53,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:36:53,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:36:53,815 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:36:53,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:36:53,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309693281] [2024-11-16 19:36:53,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309693281] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:36:53,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816940943] [2024-11-16 19:36:53,817 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 19:36:53,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:36:53,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:36:53,819 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:36:53,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 19:36:53,889 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 19:36:53,890 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:36:53,891 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 19:36:53,892 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:36:53,955 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:36:53,956 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 19:36:53,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1816940943] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:36:53,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 19:36:53,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-16 19:36:53,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35209016] [2024-11-16 19:36:53,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:36:53,957 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 19:36:53,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:36:53,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 19:36:53,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-16 19:36:53,967 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2024-11-16 19:36:53,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 21 transitions, 77 flow. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 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 19:36:53,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:36:53,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2024-11-16 19:36:53,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:36:54,073 INFO L124 PetriNetUnfolderBase]: 61/180 cut-off events. [2024-11-16 19:36:54,073 INFO L125 PetriNetUnfolderBase]: For 179/179 co-relation queries the response was YES. [2024-11-16 19:36:54,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 435 conditions, 180 events. 61/180 cut-off events. For 179/179 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 671 event pairs, 30 based on Foata normal form. 5/180 useless extension candidates. Maximal degree in co-relation 427. Up to 70 conditions per place. [2024-11-16 19:36:54,077 INFO L140 encePairwiseOnDemand]: 23/27 looper letters, 17 selfloop transitions, 2 changer transitions 12/34 dead transitions. [2024-11-16 19:36:54,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 34 transitions, 181 flow [2024-11-16 19:36:54,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 19:36:54,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-16 19:36:54,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 66 transitions. [2024-11-16 19:36:54,081 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4074074074074074 [2024-11-16 19:36:54,081 INFO L175 Difference]: Start difference. First operand has 32 places, 21 transitions, 77 flow. Second operand 6 states and 66 transitions. [2024-11-16 19:36:54,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 34 transitions, 181 flow [2024-11-16 19:36:54,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 34 transitions, 168 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-11-16 19:36:54,083 INFO L231 Difference]: Finished difference. Result has 35 places, 19 transitions, 74 flow [2024-11-16 19:36:54,085 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=74, PETRI_PLACES=35, PETRI_TRANSITIONS=19} [2024-11-16 19:36:54,086 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 9 predicate places. [2024-11-16 19:36:54,087 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 19 transitions, 74 flow [2024-11-16 19:36:54,088 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 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 19:36:54,089 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:36:54,089 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:36:54,108 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-16 19:36:54,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:36:54,290 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-16 19:36:54,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:36:54,290 INFO L85 PathProgramCache]: Analyzing trace with hash -2038311607, now seen corresponding path program 1 times [2024-11-16 19:36:54,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:36:54,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629335576] [2024-11-16 19:36:54,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:36:54,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:36:54,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-16 19:36:54,303 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-16 19:36:54,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-16 19:36:54,340 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-16 19:36:54,341 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-16 19:36:54,342 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location f2Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2024-11-16 19:36:54,344 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2024-11-16 19:36:54,345 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-11-16 19:36:54,345 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2024-11-16 19:36:54,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 19:36:54,346 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2024-11-16 19:36:54,392 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-16 19:36:54,392 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-16 19:36:54,397 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 07:36:54 BasicIcfg [2024-11-16 19:36:54,397 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-16 19:36:54,398 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-16 19:36:54,398 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-16 19:36:54,398 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-16 19:36:54,398 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:36:51" (3/4) ... [2024-11-16 19:36:54,399 INFO L137 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-16 19:36:54,462 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-16 19:36:54,466 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-16 19:36:54,467 INFO L158 Benchmark]: Toolchain (without parser) took 4163.76ms. Allocated memory was 155.2MB in the beginning and 203.4MB in the end (delta: 48.2MB). Free memory was 99.6MB in the beginning and 88.8MB in the end (delta: 10.8MB). Peak memory consumption was 58.9MB. Max. memory is 16.1GB. [2024-11-16 19:36:54,467 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 96.5MB. Free memory is still 50.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-16 19:36:54,468 INFO L158 Benchmark]: CACSL2BoogieTranslator took 602.16ms. Allocated memory is still 155.2MB. Free memory was 99.6MB in the beginning and 113.0MB in the end (delta: -13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-16 19:36:54,468 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.71ms. Allocated memory is still 155.2MB. Free memory was 113.0MB in the beginning and 111.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-16 19:36:54,468 INFO L158 Benchmark]: Boogie Preprocessor took 38.94ms. Allocated memory is still 155.2MB. Free memory was 111.0MB in the beginning and 109.6MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-16 19:36:54,468 INFO L158 Benchmark]: IcfgBuilder took 444.86ms. Allocated memory is still 155.2MB. Free memory was 109.6MB in the beginning and 90.0MB in the end (delta: 19.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-11-16 19:36:54,469 INFO L158 Benchmark]: TraceAbstraction took 2955.16ms. Allocated memory was 155.2MB in the beginning and 203.4MB in the end (delta: 48.2MB). Free memory was 89.3MB in the beginning and 92.0MB in the end (delta: -2.7MB). Peak memory consumption was 47.0MB. Max. memory is 16.1GB. [2024-11-16 19:36:54,469 INFO L158 Benchmark]: Witness Printer took 68.77ms. Allocated memory is still 203.4MB. Free memory was 92.0MB in the beginning and 88.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-16 19:36:54,472 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 96.5MB. Free memory is still 50.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 602.16ms. Allocated memory is still 155.2MB. Free memory was 99.6MB in the beginning and 113.0MB in the end (delta: -13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.71ms. Allocated memory is still 155.2MB. Free memory was 113.0MB in the beginning and 111.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.94ms. Allocated memory is still 155.2MB. Free memory was 111.0MB in the beginning and 109.6MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 444.86ms. Allocated memory is still 155.2MB. Free memory was 109.6MB in the beginning and 90.0MB in the end (delta: 19.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 2955.16ms. Allocated memory was 155.2MB in the beginning and 203.4MB in the end (delta: 48.2MB). Free memory was 89.3MB in the beginning and 92.0MB in the end (delta: -2.7MB). Peak memory consumption was 47.0MB. Max. memory is 16.1GB. * Witness Printer took 68.77ms. Allocated memory is still 203.4MB. Free memory was 92.0MB in the beginning and 88.8MB 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; [L772] 0 _N = 1 [L773] CALL 0 assume_abort_if_not(0 <= _N && _N <= 0x7fffffff - 1) [L750] COND FALSE 0 !(!cond) [L773] RET 0 assume_abort_if_not(0 <= _N && _N <= 0x7fffffff - 1) [L774] 0 pthread_t t1, t2; [L775] FCALL, FORK 0 pthread_create(&t1, 0, f1, 0) VAL [\old(arg)={0:0}, _N=1, limit=0, t1=-1] [L757] COND FALSE 1 !(__VERIFIER_nondet_int()) [L776] FCALL, FORK 0 pthread_create(&t2, 0, f2, 0) VAL [\old(arg)={0:0}, _N=1, arg={0:0}, limit=0, t1=-1, t2=0] [L760] 1 limit = _N + 1 VAL [\old(arg)={0:0}, _N=1, arg={0:0}, limit=2] [L765] 2 int i, bound; [L766] 2 bound = limit [L767] 2 i = 0 VAL [\old(arg)={0:0}, \old(arg)={0:0}, _N=1, arg={0:0}, arg={0:0}, bound=2, i=0, limit=2] [L767] COND TRUE 2 i < bound [L767] 2 i++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, _N=1, arg={0:0}, arg={0:0}, bound=2, i=1, limit=2] [L767] COND TRUE 2 i < bound [L767] 2 i++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, _N=1, arg={0:0}, arg={0:0}, bound=2, i=2, limit=2] [L767] COND FALSE 2 !(i < bound) VAL [\old(arg)={0:0}, \old(arg)={0:0}, _N=1, arg={0:0}, arg={0:0}, bound=2, i=2, limit=2] [L768] CALL 2 __VERIFIER_assert(i <= _N) [L753] COND TRUE 2 !expression VAL [\old(arg)={0:0}, \old(expression)=0, _N=1, arg={0:0}, expression=0, limit=2] [L753] 2 reach_error() VAL [\old(arg)={0:0}, \old(expression)=0, _N=1, arg={0:0}, expression=0, limit=2] - UnprovableResult [Line: 776]: 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: 775]: 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 5 procedures, 41 locations, 4 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: 2.8s, OverallIterations: 6, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 133 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 126 mSDsluCounter, 14 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 14 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 349 IncrementalHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 0 mSDtfsCounter, 349 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 72 GetRequests, 42 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=77occurred in iteration=4, InterpolantAutomatonStates: 25, 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, 1.0s InterpolantComputationTime, 112 NumberOfCodeBlocks, 112 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 102 ConstructedInterpolants, 0 QuantifiedInterpolants, 320 SizeOfPredicates, 5 NumberOfNonLiveVariables, 168 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 8 InterpolantComputations, 4 PerfectInterpolantSequences, 12/20 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 19:36:54,504 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