./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/goblint-regression/13-privatized_30-traces-oplus-vs-meet_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8be7027f 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/goblint-regression/13-privatized_30-traces-oplus-vs-meet_true.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 9f8eb81fe04afedf177636b6e0b2ff7ec90c549122dc143b3ac2872279b10356 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 08:14:30,495 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 08:14:30,553 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-12 08:14:30,557 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 08:14:30,557 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 08:14:30,583 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 08:14:30,584 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 08:14:30,584 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 08:14:30,585 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-12 08:14:30,585 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-12 08:14:30,585 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-12 08:14:30,585 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-12 08:14:30,586 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 08:14:30,586 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 08:14:30,586 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 08:14:30,587 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 08:14:30,587 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-12 08:14:30,587 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-12 08:14:30,587 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 08:14:30,588 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-12 08:14:30,588 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 08:14:30,588 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-12 08:14:30,588 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-12 08:14:30,589 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-12 08:14:30,589 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 08:14:30,589 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-12 08:14:30,589 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-12 08:14:30,589 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 08:14:30,590 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 08:14:30,590 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 08:14:30,590 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-12 08:14:30,590 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-12 08:14:30,590 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 08:14:30,590 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 08:14:30,591 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-12 08:14:30,591 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-12 08:14:30,591 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 08:14:30,591 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-12 08:14:30,591 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-12 08:14:30,591 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-12 08:14:30,592 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-12 08:14:30,592 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-12 08:14:30,592 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9f8eb81fe04afedf177636b6e0b2ff7ec90c549122dc143b3ac2872279b10356 [2024-11-12 08:14:30,780 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 08:14:30,799 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 08:14:30,801 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 08:14:30,803 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 08:14:30,803 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 08:14:30,805 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/13-privatized_30-traces-oplus-vs-meet_true.i [2024-11-12 08:14:32,245 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 08:14:32,634 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 08:14:32,634 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/13-privatized_30-traces-oplus-vs-meet_true.i [2024-11-12 08:14:32,646 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad13d023a/a5f2e01528c54929bfc8830957e6f8fe/FLAGe19411b4c [2024-11-12 08:14:32,860 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad13d023a/a5f2e01528c54929bfc8830957e6f8fe [2024-11-12 08:14:32,863 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 08:14:32,864 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 08:14:32,865 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 08:14:32,865 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 08:14:32,872 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 08:14:32,873 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:14:32" (1/1) ... [2024-11-12 08:14:32,873 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52d7af6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:14:32, skipping insertion in model container [2024-11-12 08:14:32,874 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:14:32" (1/1) ... [2024-11-12 08:14:32,919 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 08:14:33,148 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/13-privatized_30-traces-oplus-vs-meet_true.i[1097,1110] [2024-11-12 08:14:33,299 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 08:14:33,313 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 08:14:33,322 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/13-privatized_30-traces-oplus-vs-meet_true.i[1097,1110] [2024-11-12 08:14:33,347 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 08:14:33,382 INFO L204 MainTranslator]: Completed translation [2024-11-12 08:14:33,382 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:14:33 WrapperNode [2024-11-12 08:14:33,382 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 08:14:33,384 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 08:14:33,384 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 08:14:33,384 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 08:14:33,389 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:14:33" (1/1) ... [2024-11-12 08:14:33,401 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:14:33" (1/1) ... [2024-11-12 08:14:33,415 INFO L138 Inliner]: procedures = 162, calls = 31, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 57 [2024-11-12 08:14:33,416 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 08:14:33,417 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 08:14:33,417 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 08:14:33,418 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 08:14:33,425 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:14:33" (1/1) ... [2024-11-12 08:14:33,425 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:14:33" (1/1) ... [2024-11-12 08:14:33,427 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:14:33" (1/1) ... [2024-11-12 08:14:33,441 INFO L175 MemorySlicer]: Split 12 memory accesses to 3 slices as follows [2, 5, 5]. 42 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 5, 5]. The 0 writes are split as follows [0, 0, 0]. [2024-11-12 08:14:33,441 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:14:33" (1/1) ... [2024-11-12 08:14:33,442 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:14:33" (1/1) ... [2024-11-12 08:14:33,445 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:14:33" (1/1) ... [2024-11-12 08:14:33,446 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:14:33" (1/1) ... [2024-11-12 08:14:33,450 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:14:33" (1/1) ... [2024-11-12 08:14:33,451 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:14:33" (1/1) ... [2024-11-12 08:14:33,452 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 08:14:33,453 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 08:14:33,457 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 08:14:33,457 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 08:14:33,458 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:14:33" (1/1) ... [2024-11-12 08:14:33,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 08:14:33,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:14:33,486 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) [2024-11-12 08:14:33,487 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 [2024-11-12 08:14:33,523 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-12 08:14:33,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-12 08:14:33,523 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-12 08:14:33,523 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-12 08:14:33,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-12 08:14:33,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-12 08:14:33,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-12 08:14:33,524 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-12 08:14:33,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 08:14:33,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 08:14:33,539 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-12 08:14:33,659 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 08:14:33,661 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 08:14:33,806 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-12 08:14:33,807 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 08:14:33,897 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 08:14:33,898 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-12 08:14:33,898 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:14:33 BoogieIcfgContainer [2024-11-12 08:14:33,898 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 08:14:33,900 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-12 08:14:33,900 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-12 08:14:33,902 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-12 08:14:33,902 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 08:14:32" (1/3) ... [2024-11-12 08:14:33,903 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59e762bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:14:33, skipping insertion in model container [2024-11-12 08:14:33,903 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:14:33" (2/3) ... [2024-11-12 08:14:33,903 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59e762bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:14:33, skipping insertion in model container [2024-11-12 08:14:33,903 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:14:33" (3/3) ... [2024-11-12 08:14:33,904 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_30-traces-oplus-vs-meet_true.i [2024-11-12 08:14:33,916 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-12 08:14:33,916 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-12 08:14:33,916 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-12 08:14:33,959 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-12 08:14:33,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 37 transitions, 81 flow [2024-11-12 08:14:34,011 INFO L124 PetriNetUnfolderBase]: 2/36 cut-off events. [2024-11-12 08:14:34,011 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-12 08:14:34,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 36 events. 2/36 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 32 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2024-11-12 08:14:34,013 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 37 transitions, 81 flow [2024-11-12 08:14:34,015 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 27 transitions, 57 flow [2024-11-12 08:14:34,021 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 08:14:34,025 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;@fc4b077, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 08:14:34,026 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-12 08:14:34,028 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 08:14:34,028 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-11-12 08:14:34,028 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-12 08:14:34,028 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:14:34,029 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-12 08:14:34,029 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:14:34,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:14:34,033 INFO L85 PathProgramCache]: Analyzing trace with hash 233947, now seen corresponding path program 1 times [2024-11-12 08:14:34,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:14:34,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602092321] [2024-11-12 08:14:34,040 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:14:34,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:14:34,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:14:34,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:14:34,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:14:34,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602092321] [2024-11-12 08:14:34,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602092321] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:14:34,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:14:34,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 08:14:34,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351400367] [2024-11-12 08:14:34,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:14:34,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 08:14:34,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:14:34,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 08:14:34,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 08:14:34,327 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-11-12 08:14:34,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 27 transitions, 57 flow. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 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) [2024-11-12 08:14:34,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:14:34,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-11-12 08:14:34,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:14:34,397 INFO L124 PetriNetUnfolderBase]: 45/129 cut-off events. [2024-11-12 08:14:34,398 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-12 08:14:34,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 242 conditions, 129 events. 45/129 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 396 event pairs, 45 based on Foata normal form. 0/127 useless extension candidates. Maximal degree in co-relation 229. Up to 107 conditions per place. [2024-11-12 08:14:34,400 INFO L140 encePairwiseOnDemand]: 34/37 looper letters, 16 selfloop transitions, 2 changer transitions 0/24 dead transitions. [2024-11-12 08:14:34,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 24 transitions, 87 flow [2024-11-12 08:14:34,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 08:14:34,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 08:14:34,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 49 transitions. [2024-11-12 08:14:34,409 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44144144144144143 [2024-11-12 08:14:34,410 INFO L175 Difference]: Start difference. First operand has 30 places, 27 transitions, 57 flow. Second operand 3 states and 49 transitions. [2024-11-12 08:14:34,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 24 transitions, 87 flow [2024-11-12 08:14:34,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 24 transitions, 86 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 08:14:34,415 INFO L231 Difference]: Finished difference. Result has 29 places, 24 transitions, 54 flow [2024-11-12 08:14:34,416 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=54, PETRI_PLACES=29, PETRI_TRANSITIONS=24} [2024-11-12 08:14:34,418 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, -1 predicate places. [2024-11-12 08:14:34,419 INFO L471 AbstractCegarLoop]: Abstraction has has 29 places, 24 transitions, 54 flow [2024-11-12 08:14:34,419 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 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) [2024-11-12 08:14:34,419 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:14:34,419 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:14:34,419 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-12 08:14:34,420 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:14:34,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:14:34,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1778076176, now seen corresponding path program 1 times [2024-11-12 08:14:34,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:14:34,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325038102] [2024-11-12 08:14:34,421 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:14:34,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:14:34,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:14:34,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:14:34,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:14:34,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325038102] [2024-11-12 08:14:34,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325038102] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:14:34,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:14:34,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 08:14:34,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705429515] [2024-11-12 08:14:34,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:14:34,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 08:14:34,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:14:34,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 08:14:34,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-12 08:14:34,549 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-11-12 08:14:34,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 24 transitions, 54 flow. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 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) [2024-11-12 08:14:34,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:14:34,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-11-12 08:14:34,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:14:34,675 INFO L124 PetriNetUnfolderBase]: 40/131 cut-off events. [2024-11-12 08:14:34,677 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-12 08:14:34,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 249 conditions, 131 events. 40/131 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 445 event pairs, 18 based on Foata normal form. 14/143 useless extension candidates. Maximal degree in co-relation 238. Up to 59 conditions per place. [2024-11-12 08:14:34,679 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 19 selfloop transitions, 5 changer transitions 14/44 dead transitions. [2024-11-12 08:14:34,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 44 transitions, 170 flow [2024-11-12 08:14:34,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-12 08:14:34,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-12 08:14:34,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 111 transitions. [2024-11-12 08:14:34,687 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-11-12 08:14:34,687 INFO L175 Difference]: Start difference. First operand has 29 places, 24 transitions, 54 flow. Second operand 7 states and 111 transitions. [2024-11-12 08:14:34,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 44 transitions, 170 flow [2024-11-12 08:14:34,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 44 transitions, 166 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-12 08:14:34,688 INFO L231 Difference]: Finished difference. Result has 36 places, 24 transitions, 68 flow [2024-11-12 08:14:34,689 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=68, PETRI_PLACES=36, PETRI_TRANSITIONS=24} [2024-11-12 08:14:34,690 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 6 predicate places. [2024-11-12 08:14:34,694 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 24 transitions, 68 flow [2024-11-12 08:14:34,694 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 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) [2024-11-12 08:14:34,694 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:14:34,695 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:14:34,695 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-12 08:14:34,696 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:14:34,696 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:14:34,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1951381058, now seen corresponding path program 1 times [2024-11-12 08:14:34,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:14:34,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540212131] [2024-11-12 08:14:34,697 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:14:34,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:14:34,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:14:34,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:14:34,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:14:34,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540212131] [2024-11-12 08:14:34,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540212131] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:14:34,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:14:34,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 08:14:34,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737398020] [2024-11-12 08:14:34,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:14:34,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 08:14:34,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:14:34,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 08:14:34,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 08:14:34,930 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 37 [2024-11-12 08:14:34,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 24 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2024-11-12 08:14:34,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:14:34,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 37 [2024-11-12 08:14:34,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:14:34,964 INFO L124 PetriNetUnfolderBase]: 7/37 cut-off events. [2024-11-12 08:14:34,964 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-12 08:14:34,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 37 events. 7/37 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 56 event pairs, 2 based on Foata normal form. 8/42 useless extension candidates. Maximal degree in co-relation 71. Up to 18 conditions per place. [2024-11-12 08:14:34,965 INFO L140 encePairwiseOnDemand]: 33/37 looper letters, 9 selfloop transitions, 3 changer transitions 2/21 dead transitions. [2024-11-12 08:14:34,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 21 transitions, 88 flow [2024-11-12 08:14:34,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 08:14:34,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 08:14:34,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 59 transitions. [2024-11-12 08:14:34,966 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5315315315315315 [2024-11-12 08:14:34,966 INFO L175 Difference]: Start difference. First operand has 36 places, 24 transitions, 68 flow. Second operand 3 states and 59 transitions. [2024-11-12 08:14:34,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 21 transitions, 88 flow [2024-11-12 08:14:34,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 21 transitions, 76 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-11-12 08:14:34,967 INFO L231 Difference]: Finished difference. Result has 26 places, 18 transitions, 48 flow [2024-11-12 08:14:34,967 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=48, PETRI_PLACES=26, PETRI_TRANSITIONS=18} [2024-11-12 08:14:34,968 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, -4 predicate places. [2024-11-12 08:14:34,968 INFO L471 AbstractCegarLoop]: Abstraction has has 26 places, 18 transitions, 48 flow [2024-11-12 08:14:34,968 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2024-11-12 08:14:34,968 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:14:34,969 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:14:34,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-12 08:14:34,969 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:14:34,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:14:34,970 INFO L85 PathProgramCache]: Analyzing trace with hash -691413459, now seen corresponding path program 1 times [2024-11-12 08:14:34,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:14:34,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317202822] [2024-11-12 08:14:34,970 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:14:34,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:14:34,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:14:35,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:14:35,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:14:35,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317202822] [2024-11-12 08:14:35,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317202822] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:14:35,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:14:35,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 08:14:35,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529961249] [2024-11-12 08:14:35,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:14:35,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 08:14:35,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:14:35,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 08:14:35,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-12 08:14:35,208 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 37 [2024-11-12 08:14:35,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 18 transitions, 48 flow. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 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) [2024-11-12 08:14:35,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:14:35,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 37 [2024-11-12 08:14:35,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:14:35,246 INFO L124 PetriNetUnfolderBase]: 5/30 cut-off events. [2024-11-12 08:14:35,249 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-12 08:14:35,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 30 events. 5/30 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 43 event pairs, 0 based on Foata normal form. 3/32 useless extension candidates. Maximal degree in co-relation 53. Up to 16 conditions per place. [2024-11-12 08:14:35,250 INFO L140 encePairwiseOnDemand]: 34/37 looper letters, 0 selfloop transitions, 0 changer transitions 17/17 dead transitions. [2024-11-12 08:14:35,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 17 transitions, 70 flow [2024-11-12 08:14:35,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 08:14:35,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 08:14:35,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 70 transitions. [2024-11-12 08:14:35,253 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47297297297297297 [2024-11-12 08:14:35,254 INFO L175 Difference]: Start difference. First operand has 26 places, 18 transitions, 48 flow. Second operand 4 states and 70 transitions. [2024-11-12 08:14:35,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 17 transitions, 70 flow [2024-11-12 08:14:35,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 17 transitions, 64 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-12 08:14:35,255 INFO L231 Difference]: Finished difference. Result has 22 places, 0 transitions, 0 flow [2024-11-12 08:14:35,256 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=35, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=22, PETRI_TRANSITIONS=0} [2024-11-12 08:14:35,257 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, -8 predicate places. [2024-11-12 08:14:35,258 INFO L471 AbstractCegarLoop]: Abstraction has has 22 places, 0 transitions, 0 flow [2024-11-12 08:14:35,258 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 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) [2024-11-12 08:14:35,261 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2024-11-12 08:14:35,263 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2024-11-12 08:14:35,264 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2024-11-12 08:14:35,264 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-12 08:14:35,264 INFO L421 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-12 08:14:35,270 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-12 08:14:35,271 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-12 08:14:35,277 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 08:14:35 BasicIcfg [2024-11-12 08:14:35,278 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-12 08:14:35,278 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-12 08:14:35,281 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-12 08:14:35,281 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-12 08:14:35,282 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:14:33" (3/4) ... [2024-11-12 08:14:35,285 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-12 08:14:35,288 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2024-11-12 08:14:35,291 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 32 nodes and edges [2024-11-12 08:14:35,293 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2024-11-12 08:14:35,293 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-12 08:14:35,293 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-12 08:14:35,391 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-12 08:14:35,392 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-12 08:14:35,392 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-12 08:14:35,393 INFO L158 Benchmark]: Toolchain (without parser) took 2528.96ms. Allocated memory was 180.4MB in the beginning and 257.9MB in the end (delta: 77.6MB). Free memory was 121.6MB in the beginning and 132.4MB in the end (delta: -10.8MB). Peak memory consumption was 69.9MB. Max. memory is 16.1GB. [2024-11-12 08:14:35,393 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 180.4MB. Free memory is still 143.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-12 08:14:35,393 INFO L158 Benchmark]: CACSL2BoogieTranslator took 517.92ms. Allocated memory is still 180.4MB. Free memory was 121.6MB in the beginning and 99.4MB in the end (delta: 22.2MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-11-12 08:14:35,394 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.78ms. Allocated memory is still 180.4MB. Free memory was 99.4MB in the beginning and 97.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-12 08:14:35,394 INFO L158 Benchmark]: Boogie Preprocessor took 35.48ms. Allocated memory is still 180.4MB. Free memory was 97.2MB in the beginning and 95.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-12 08:14:35,394 INFO L158 Benchmark]: RCFGBuilder took 445.27ms. Allocated memory is still 180.4MB. Free memory was 95.2MB in the beginning and 70.0MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-12 08:14:35,394 INFO L158 Benchmark]: TraceAbstraction took 1378.16ms. Allocated memory was 180.4MB in the beginning and 257.9MB in the end (delta: 77.6MB). Free memory was 69.2MB in the beginning and 136.6MB in the end (delta: -67.4MB). Peak memory consumption was 13.3MB. Max. memory is 16.1GB. [2024-11-12 08:14:35,394 INFO L158 Benchmark]: Witness Printer took 114.01ms. Allocated memory is still 257.9MB. Free memory was 136.6MB in the beginning and 132.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-12 08:14:35,399 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 180.4MB. Free memory is still 143.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 517.92ms. Allocated memory is still 180.4MB. Free memory was 121.6MB in the beginning and 99.4MB in the end (delta: 22.2MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.78ms. Allocated memory is still 180.4MB. Free memory was 99.4MB in the beginning and 97.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.48ms. Allocated memory is still 180.4MB. Free memory was 97.2MB in the beginning and 95.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 445.27ms. Allocated memory is still 180.4MB. Free memory was 95.2MB in the beginning and 70.0MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 1378.16ms. Allocated memory was 180.4MB in the beginning and 257.9MB in the end (delta: 77.6MB). Free memory was 69.2MB in the beginning and 136.6MB in the end (delta: -67.4MB). Peak memory consumption was 13.3MB. Max. memory is 16.1GB. * Witness Printer took 114.01ms. Allocated memory is still 257.9MB. Free memory was 136.6MB in the beginning and 132.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 51 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.3s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 41 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 37 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 20 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 166 IncrementalHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 20 mSolverCounterUnsat, 1 mSDtfsCounter, 166 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=68occurred in iteration=2, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 43 ConstructedInterpolants, 0 QuantifiedInterpolants, 183 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-12 08:14:35,428 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 Result: TRUE