./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-bluetooth.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-bluetooth.wvr.c -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 673666cb71096405cc13bacc98be08aac7026343d1cf8127c7ee9fffc801c83e --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 12:29:59,378 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 12:29:59,446 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-24 12:29:59,452 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 12:29:59,455 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 12:29:59,488 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 12:29:59,489 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 12:29:59,490 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 12:29:59,490 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 12:29:59,491 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 12:29:59,491 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 12:29:59,491 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 12:29:59,492 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 12:29:59,494 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 12:29:59,494 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 12:29:59,495 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 12:29:59,495 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 12:29:59,495 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 12:29:59,496 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 12:29:59,496 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 12:29:59,496 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 12:29:59,498 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 12:29:59,501 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 12:29:59,501 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 12:29:59,502 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 12:29:59,502 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 12:29:59,502 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 12:29:59,502 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 12:29:59,503 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 12:29:59,503 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 12:29:59,503 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 12:29:59,503 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 12:29:59,503 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 12:29:59,504 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 12:29:59,504 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 12:29:59,506 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 12:29:59,506 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 12:29:59,506 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 12:29:59,506 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 12:29:59,507 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 12:29:59,507 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 12:29:59,508 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 12:29:59,509 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 673666cb71096405cc13bacc98be08aac7026343d1cf8127c7ee9fffc801c83e [2024-10-24 12:29:59,773 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 12:29:59,808 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 12:29:59,811 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 12:29:59,812 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 12:29:59,813 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 12:29:59,814 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-bluetooth.wvr.c [2024-10-24 12:30:01,534 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 12:30:01,772 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 12:30:01,773 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-bluetooth.wvr.c [2024-10-24 12:30:01,782 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38ccad0d6/a1d634b549b841e484c97b3ac4729710/FLAG1c4a0d8c7 [2024-10-24 12:30:02,128 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38ccad0d6/a1d634b549b841e484c97b3ac4729710 [2024-10-24 12:30:02,131 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 12:30:02,132 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 12:30:02,134 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 12:30:02,134 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 12:30:02,151 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 12:30:02,151 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:30:02" (1/1) ... [2024-10-24 12:30:02,156 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7319f4ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:30:02, skipping insertion in model container [2024-10-24 12:30:02,157 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:30:02" (1/1) ... [2024-10-24 12:30:02,206 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 12:30:02,487 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-bluetooth.wvr.c[3160,3173] [2024-10-24 12:30:02,496 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 12:30:02,509 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 12:30:02,538 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-bluetooth.wvr.c[3160,3173] [2024-10-24 12:30:02,542 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 12:30:02,563 INFO L204 MainTranslator]: Completed translation [2024-10-24 12:30:02,564 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:30:02 WrapperNode [2024-10-24 12:30:02,564 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 12:30:02,566 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 12:30:02,566 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 12:30:02,566 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 12:30:02,573 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:30:02" (1/1) ... [2024-10-24 12:30:02,581 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:30:02" (1/1) ... [2024-10-24 12:30:02,603 INFO L138 Inliner]: procedures = 20, calls = 38, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 117 [2024-10-24 12:30:02,607 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 12:30:02,608 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 12:30:02,608 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 12:30:02,609 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 12:30:02,621 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:30:02" (1/1) ... [2024-10-24 12:30:02,621 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:30:02" (1/1) ... [2024-10-24 12:30:02,623 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:30:02" (1/1) ... [2024-10-24 12:30:02,638 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]. [2024-10-24 12:30:02,638 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:30:02" (1/1) ... [2024-10-24 12:30:02,639 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:30:02" (1/1) ... [2024-10-24 12:30:02,643 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:30:02" (1/1) ... [2024-10-24 12:30:02,645 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:30:02" (1/1) ... [2024-10-24 12:30:02,647 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:30:02" (1/1) ... [2024-10-24 12:30:02,648 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:30:02" (1/1) ... [2024-10-24 12:30:02,650 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 12:30:02,651 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 12:30:02,651 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 12:30:02,652 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 12:30:02,653 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:30:02" (1/1) ... [2024-10-24 12:30:02,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 12:30:02,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:30:02,699 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) [2024-10-24 12:30:02,703 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 [2024-10-24 12:30:02,758 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 12:30:02,759 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-24 12:30:02,759 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-24 12:30:02,759 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-24 12:30:02,759 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-24 12:30:02,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 12:30:02,760 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-24 12:30:02,760 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-24 12:30:02,762 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 12:30:02,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 12:30:02,764 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-24 12:30:02,885 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 12:30:02,887 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 12:30:03,194 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-24 12:30:03,198 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 12:30:03,471 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 12:30:03,472 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-24 12:30:03,472 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:30:03 BoogieIcfgContainer [2024-10-24 12:30:03,473 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 12:30:03,475 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 12:30:03,475 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 12:30:03,480 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 12:30:03,480 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 12:30:02" (1/3) ... [2024-10-24 12:30:03,481 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4419dca6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:30:03, skipping insertion in model container [2024-10-24 12:30:03,481 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:30:02" (2/3) ... [2024-10-24 12:30:03,482 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4419dca6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:30:03, skipping insertion in model container [2024-10-24 12:30:03,482 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:30:03" (3/3) ... [2024-10-24 12:30:03,484 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-bluetooth.wvr.c [2024-10-24 12:30:03,502 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 12:30:03,503 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-24 12:30:03,503 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-24 12:30:03,560 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-24 12:30:03,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 36 places, 31 transitions, 76 flow [2024-10-24 12:30:03,672 INFO L124 PetriNetUnfolderBase]: 2/29 cut-off events. [2024-10-24 12:30:03,678 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-24 12:30:03,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 29 events. 2/29 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 27 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 24. Up to 2 conditions per place. [2024-10-24 12:30:03,686 INFO L82 GeneralOperation]: Start removeDead. Operand has 36 places, 31 transitions, 76 flow [2024-10-24 12:30:03,697 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 33 places, 28 transitions, 68 flow [2024-10-24 12:30:03,725 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 12:30:03,743 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;@2616f3dd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 12:30:03,744 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-10-24 12:30:03,806 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 12:30:03,810 INFO L124 PetriNetUnfolderBase]: 2/27 cut-off events. [2024-10-24 12:30:03,814 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-24 12:30:03,814 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:30:03,815 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:30:03,816 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-24 12:30:03,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:30:03,827 INFO L85 PathProgramCache]: Analyzing trace with hash 757868234, now seen corresponding path program 1 times [2024-10-24 12:30:03,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:30:03,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000672273] [2024-10-24 12:30:03,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:30:03,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:30:04,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:30:04,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:30:04,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:30:04,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000672273] [2024-10-24 12:30:04,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000672273] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:30:04,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:30:04,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 12:30:04,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405532955] [2024-10-24 12:30:04,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:30:04,276 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 12:30:04,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:30:04,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 12:30:04,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 12:30:04,317 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 31 [2024-10-24 12:30:04,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 28 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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) [2024-10-24 12:30:04,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:30:04,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 31 [2024-10-24 12:30:04,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:30:04,411 INFO L124 PetriNetUnfolderBase]: 107/248 cut-off events. [2024-10-24 12:30:04,411 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2024-10-24 12:30:04,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 473 conditions, 248 events. 107/248 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1054 event pairs, 37 based on Foata normal form. 8/230 useless extension candidates. Maximal degree in co-relation 412. Up to 131 conditions per place. [2024-10-24 12:30:04,418 INFO L140 encePairwiseOnDemand]: 27/31 looper letters, 25 selfloop transitions, 3 changer transitions 0/39 dead transitions. [2024-10-24 12:30:04,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 39 transitions, 152 flow [2024-10-24 12:30:04,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 12:30:04,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 12:30:04,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 68 transitions. [2024-10-24 12:30:04,430 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7311827956989247 [2024-10-24 12:30:04,432 INFO L175 Difference]: Start difference. First operand has 33 places, 28 transitions, 68 flow. Second operand 3 states and 68 transitions. [2024-10-24 12:30:04,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 39 transitions, 152 flow [2024-10-24 12:30:04,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 39 transitions, 140 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-24 12:30:04,437 INFO L231 Difference]: Finished difference. Result has 32 places, 30 transitions, 79 flow [2024-10-24 12:30:04,439 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=79, PETRI_PLACES=32, PETRI_TRANSITIONS=30} [2024-10-24 12:30:04,443 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, -1 predicate places. [2024-10-24 12:30:04,443 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 30 transitions, 79 flow [2024-10-24 12:30:04,444 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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) [2024-10-24 12:30:04,444 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:30:04,444 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:30:04,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 12:30:04,445 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-24 12:30:04,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:30:04,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1259910161, now seen corresponding path program 1 times [2024-10-24 12:30:04,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:30:04,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245626447] [2024-10-24 12:30:04,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:30:04,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:30:04,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:30:04,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:30:04,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:30:04,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245626447] [2024-10-24 12:30:04,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245626447] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:30:04,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:30:04,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 12:30:04,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823486933] [2024-10-24 12:30:04,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:30:04,804 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 12:30:04,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:30:04,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 12:30:04,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-24 12:30:04,824 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 31 [2024-10-24 12:30:04,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 30 transitions, 79 flow. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 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) [2024-10-24 12:30:04,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:30:04,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 31 [2024-10-24 12:30:04,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:30:05,015 INFO L124 PetriNetUnfolderBase]: 122/330 cut-off events. [2024-10-24 12:30:05,015 INFO L125 PetriNetUnfolderBase]: For 9/10 co-relation queries the response was YES. [2024-10-24 12:30:05,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 632 conditions, 330 events. 122/330 cut-off events. For 9/10 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1600 event pairs, 16 based on Foata normal form. 6/315 useless extension candidates. Maximal degree in co-relation 267. Up to 90 conditions per place. [2024-10-24 12:30:05,022 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 33 selfloop transitions, 12 changer transitions 0/58 dead transitions. [2024-10-24 12:30:05,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 58 transitions, 234 flow [2024-10-24 12:30:05,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 12:30:05,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-24 12:30:05,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 137 transitions. [2024-10-24 12:30:05,026 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.631336405529954 [2024-10-24 12:30:05,027 INFO L175 Difference]: Start difference. First operand has 32 places, 30 transitions, 79 flow. Second operand 7 states and 137 transitions. [2024-10-24 12:30:05,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 58 transitions, 234 flow [2024-10-24 12:30:05,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 58 transitions, 231 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 12:30:05,031 INFO L231 Difference]: Finished difference. Result has 39 places, 37 transitions, 123 flow [2024-10-24 12:30:05,031 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=123, PETRI_PLACES=39, PETRI_TRANSITIONS=37} [2024-10-24 12:30:05,032 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 6 predicate places. [2024-10-24 12:30:05,032 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 37 transitions, 123 flow [2024-10-24 12:30:05,033 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 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) [2024-10-24 12:30:05,033 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:30:05,033 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:30:05,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 12:30:05,033 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-24 12:30:05,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:30:05,061 INFO L85 PathProgramCache]: Analyzing trace with hash 358809582, now seen corresponding path program 1 times [2024-10-24 12:30:05,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:30:05,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552375396] [2024-10-24 12:30:05,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:30:05,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:30:05,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:30:05,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:30:05,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:30:05,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552375396] [2024-10-24 12:30:05,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552375396] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:30:05,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:30:05,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 12:30:05,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400327204] [2024-10-24 12:30:05,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:30:05,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 12:30:05,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:30:05,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 12:30:05,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-24 12:30:05,375 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 31 [2024-10-24 12:30:05,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 37 transitions, 123 flow. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 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) [2024-10-24 12:30:05,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:30:05,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 31 [2024-10-24 12:30:05,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:30:05,503 INFO L124 PetriNetUnfolderBase]: 99/267 cut-off events. [2024-10-24 12:30:05,503 INFO L125 PetriNetUnfolderBase]: For 66/69 co-relation queries the response was YES. [2024-10-24 12:30:05,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 578 conditions, 267 events. 99/267 cut-off events. For 66/69 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1256 event pairs, 16 based on Foata normal form. 19/269 useless extension candidates. Maximal degree in co-relation 355. Up to 74 conditions per place. [2024-10-24 12:30:05,506 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 31 selfloop transitions, 12 changer transitions 3/58 dead transitions. [2024-10-24 12:30:05,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 58 transitions, 268 flow [2024-10-24 12:30:05,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 12:30:05,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-24 12:30:05,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-10-24 12:30:05,508 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6129032258064516 [2024-10-24 12:30:05,509 INFO L175 Difference]: Start difference. First operand has 39 places, 37 transitions, 123 flow. Second operand 8 states and 152 transitions. [2024-10-24 12:30:05,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 58 transitions, 268 flow [2024-10-24 12:30:05,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 58 transitions, 264 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 12:30:05,511 INFO L231 Difference]: Finished difference. Result has 47 places, 36 transitions, 148 flow [2024-10-24 12:30:05,512 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=148, PETRI_PLACES=47, PETRI_TRANSITIONS=36} [2024-10-24 12:30:05,512 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 14 predicate places. [2024-10-24 12:30:05,513 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 36 transitions, 148 flow [2024-10-24 12:30:05,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 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) [2024-10-24 12:30:05,513 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:30:05,513 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:30:05,513 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 12:30:05,514 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-24 12:30:05,514 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:30:05,514 INFO L85 PathProgramCache]: Analyzing trace with hash 1536645777, now seen corresponding path program 2 times [2024-10-24 12:30:05,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:30:05,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753394397] [2024-10-24 12:30:05,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:30:05,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:30:05,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:30:05,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:30:05,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:30:05,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753394397] [2024-10-24 12:30:05,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753394397] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:30:05,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:30:05,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 12:30:05,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666740582] [2024-10-24 12:30:05,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:30:05,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 12:30:05,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:30:05,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 12:30:05,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 12:30:05,706 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 31 [2024-10-24 12:30:05,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 36 transitions, 148 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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) [2024-10-24 12:30:05,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:30:05,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 31 [2024-10-24 12:30:05,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:30:05,807 INFO L124 PetriNetUnfolderBase]: 100/266 cut-off events. [2024-10-24 12:30:05,807 INFO L125 PetriNetUnfolderBase]: For 199/202 co-relation queries the response was YES. [2024-10-24 12:30:05,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 666 conditions, 266 events. 100/266 cut-off events. For 199/202 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1217 event pairs, 66 based on Foata normal form. 2/252 useless extension candidates. Maximal degree in co-relation 528. Up to 155 conditions per place. [2024-10-24 12:30:05,810 INFO L140 encePairwiseOnDemand]: 28/31 looper letters, 0 selfloop transitions, 0 changer transitions 38/38 dead transitions. [2024-10-24 12:30:05,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 38 transitions, 211 flow [2024-10-24 12:30:05,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 12:30:05,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 12:30:05,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 73 transitions. [2024-10-24 12:30:05,813 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5887096774193549 [2024-10-24 12:30:05,813 INFO L175 Difference]: Start difference. First operand has 47 places, 36 transitions, 148 flow. Second operand 4 states and 73 transitions. [2024-10-24 12:30:05,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 38 transitions, 211 flow [2024-10-24 12:30:05,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 38 transitions, 189 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-10-24 12:30:05,818 INFO L231 Difference]: Finished difference. Result has 42 places, 0 transitions, 0 flow [2024-10-24 12:30:05,818 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=42, PETRI_TRANSITIONS=0} [2024-10-24 12:30:05,819 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 9 predicate places. [2024-10-24 12:30:05,819 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 0 transitions, 0 flow [2024-10-24 12:30:05,820 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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) [2024-10-24 12:30:05,822 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2024-10-24 12:30:05,823 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2024-10-24 12:30:05,823 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2024-10-24 12:30:05,823 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 12:30:05,824 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-10-24 12:30:05,828 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-10-24 12:30:05,829 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-24 12:30:05,834 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 12:30:05 BasicIcfg [2024-10-24 12:30:05,834 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-24 12:30:05,835 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-24 12:30:05,835 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-24 12:30:05,835 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-24 12:30:05,835 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:30:03" (3/4) ... [2024-10-24 12:30:05,837 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-24 12:30:05,840 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-10-24 12:30:05,840 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-10-24 12:30:05,845 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 96 nodes and edges [2024-10-24 12:30:05,846 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2024-10-24 12:30:05,846 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2024-10-24 12:30:05,849 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-10-24 12:30:05,929 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-24 12:30:05,930 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-24 12:30:05,930 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-24 12:30:05,931 INFO L158 Benchmark]: Toolchain (without parser) took 3798.64ms. Allocated memory is still 197.1MB. Free memory was 126.0MB in the beginning and 149.7MB in the end (delta: -23.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-24 12:30:05,931 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 132.1MB. Free memory is still 94.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-24 12:30:05,931 INFO L158 Benchmark]: CACSL2BoogieTranslator took 431.21ms. Allocated memory is still 197.1MB. Free memory was 126.0MB in the beginning and 112.9MB in the end (delta: 13.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-10-24 12:30:05,931 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.11ms. Allocated memory is still 197.1MB. Free memory was 112.9MB in the beginning and 110.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-24 12:30:05,932 INFO L158 Benchmark]: Boogie Preprocessor took 41.61ms. Allocated memory is still 197.1MB. Free memory was 110.9MB in the beginning and 108.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-24 12:30:05,932 INFO L158 Benchmark]: RCFGBuilder took 821.56ms. Allocated memory is still 197.1MB. Free memory was 108.8MB in the beginning and 67.5MB in the end (delta: 41.2MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. [2024-10-24 12:30:05,932 INFO L158 Benchmark]: TraceAbstraction took 2359.07ms. Allocated memory is still 197.1MB. Free memory was 66.8MB in the beginning and 154.9MB in the end (delta: -88.1MB). Peak memory consumption was 20.4MB. Max. memory is 16.1GB. [2024-10-24 12:30:05,933 INFO L158 Benchmark]: Witness Printer took 95.35ms. Allocated memory is still 197.1MB. Free memory was 154.9MB in the beginning and 149.7MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-24 12:30:05,934 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 132.1MB. Free memory is still 94.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 431.21ms. Allocated memory is still 197.1MB. Free memory was 126.0MB in the beginning and 112.9MB in the end (delta: 13.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.11ms. Allocated memory is still 197.1MB. Free memory was 112.9MB in the beginning and 110.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.61ms. Allocated memory is still 197.1MB. Free memory was 110.9MB in the beginning and 108.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 821.56ms. Allocated memory is still 197.1MB. Free memory was 108.8MB in the beginning and 67.5MB in the end (delta: 41.2MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. * TraceAbstraction took 2359.07ms. Allocated memory is still 197.1MB. Free memory was 66.8MB in the beginning and 154.9MB in the end (delta: -88.1MB). Peak memory consumption was 20.4MB. Max. memory is 16.1GB. * Witness Printer took 95.35ms. Allocated memory is still 197.1MB. Free memory was 154.9MB in the beginning and 149.7MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 115]: 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 5 procedures, 51 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.1s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.2s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 133 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 118 mSDsluCounter, 28 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 15 mSDsCounter, 20 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 281 IncrementalHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 20 mSolverCounterUnsat, 13 mSDtfsCounter, 281 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=148occurred in iteration=3, InterpolantAutomatonStates: 22, 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, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 99 NumberOfCodeBlocks, 99 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 95 ConstructedInterpolants, 0 QuantifiedInterpolants, 405 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 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-10-24 12:30:05,962 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE