./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/mix046.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/mix046.opt.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 f69f777f524a62a415fc7cacc9442c44e05883e29c36815b4e0d58199826b331 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 19:12:42,637 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 19:12:42,706 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 19:12:42,713 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 19:12:42,714 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 19:12:42,738 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 19:12:42,739 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 19:12:42,739 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 19:12:42,740 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 19:12:42,741 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 19:12:42,741 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 19:12:42,742 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 19:12:42,742 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 19:12:42,743 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 19:12:42,744 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 19:12:42,744 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 19:12:42,744 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 19:12:42,745 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 19:12:42,745 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 19:12:42,745 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 19:12:42,746 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 19:12:42,749 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 19:12:42,749 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 19:12:42,749 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 19:12:42,750 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 19:12:42,750 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 19:12:42,750 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 19:12:42,750 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 19:12:42,751 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 19:12:42,751 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 19:12:42,751 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 19:12:42,751 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 19:12:42,752 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 19:12:42,752 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 19:12:42,754 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 19:12:42,754 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 19:12:42,755 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 19:12:42,755 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 19:12:42,756 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 19:12:42,756 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 19:12:42,756 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 19:12:42,756 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 19:12:42,757 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f69f777f524a62a415fc7cacc9442c44e05883e29c36815b4e0d58199826b331 [2024-11-16 19:12:43,029 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 19:12:43,053 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 19:12:43,059 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 19:12:43,060 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 19:12:43,060 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 19:12:43,062 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/mix046.opt.i [2024-11-16 19:12:44,519 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 19:12:44,764 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 19:12:44,765 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix046.opt.i [2024-11-16 19:12:44,784 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dad454c4a/c42c0cf1d8434347a547e7102a86120b/FLAG045cc0fe0 [2024-11-16 19:12:44,797 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dad454c4a/c42c0cf1d8434347a547e7102a86120b [2024-11-16 19:12:44,800 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 19:12:44,801 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 19:12:44,802 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 19:12:44,802 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 19:12:44,808 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 19:12:44,809 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:12:44" (1/1) ... [2024-11-16 19:12:44,810 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@515b6bff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:12:44, skipping insertion in model container [2024-11-16 19:12:44,810 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:12:44" (1/1) ... [2024-11-16 19:12:44,860 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 19:12:45,073 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix046.opt.i[944,957] [2024-11-16 19:12:45,302 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 19:12:45,326 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 19:12:45,335 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix046.opt.i[944,957] [2024-11-16 19:12:45,380 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 19:12:45,425 INFO L204 MainTranslator]: Completed translation [2024-11-16 19:12:45,426 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:12:45 WrapperNode [2024-11-16 19:12:45,426 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 19:12:45,427 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 19:12:45,428 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 19:12:45,428 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 19:12:45,436 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:12:45" (1/1) ... [2024-11-16 19:12:45,468 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:12:45" (1/1) ... [2024-11-16 19:12:45,507 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 153 [2024-11-16 19:12:45,507 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 19:12:45,511 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 19:12:45,511 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 19:12:45,514 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 19:12:45,524 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:12:45" (1/1) ... [2024-11-16 19:12:45,525 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:12:45" (1/1) ... [2024-11-16 19:12:45,528 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:12:45" (1/1) ... [2024-11-16 19:12:45,547 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-16 19:12:45,548 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:12:45" (1/1) ... [2024-11-16 19:12:45,548 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:12:45" (1/1) ... [2024-11-16 19:12:45,556 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:12:45" (1/1) ... [2024-11-16 19:12:45,556 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:12:45" (1/1) ... [2024-11-16 19:12:45,558 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:12:45" (1/1) ... [2024-11-16 19:12:45,560 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:12:45" (1/1) ... [2024-11-16 19:12:45,563 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 19:12:45,564 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 19:12:45,564 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 19:12:45,564 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 19:12:45,565 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:12:45" (1/1) ... [2024-11-16 19:12:45,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 19:12:45,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:12:45,610 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-16 19:12:45,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-16 19:12:45,662 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-16 19:12:45,662 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 19:12:45,663 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-11-16 19:12:45,664 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-11-16 19:12:45,664 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-11-16 19:12:45,664 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-11-16 19:12:45,664 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-11-16 19:12:45,665 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-11-16 19:12:45,666 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-11-16 19:12:45,666 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-11-16 19:12:45,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 19:12:45,666 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-16 19:12:45,666 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 19:12:45,667 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 19:12:45,668 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-16 19:12:45,841 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 19:12:45,844 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 19:12:46,163 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-16 19:12:46,163 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 19:12:46,385 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 19:12:46,385 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 19:12:46,386 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:12:46 BoogieIcfgContainer [2024-11-16 19:12:46,386 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 19:12:46,388 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 19:12:46,388 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 19:12:46,392 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 19:12:46,392 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 07:12:44" (1/3) ... [2024-11-16 19:12:46,392 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@280bacfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:12:46, skipping insertion in model container [2024-11-16 19:12:46,393 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:12:45" (2/3) ... [2024-11-16 19:12:46,393 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@280bacfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:12:46, skipping insertion in model container [2024-11-16 19:12:46,394 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:12:46" (3/3) ... [2024-11-16 19:12:46,395 INFO L112 eAbstractionObserver]: Analyzing ICFG mix046.opt.i [2024-11-16 19:12:46,412 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 19:12:46,412 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-16 19:12:46,412 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-16 19:12:46,475 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-16 19:12:46,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 50 transitions, 116 flow [2024-11-16 19:12:46,552 INFO L124 PetriNetUnfolderBase]: 1/46 cut-off events. [2024-11-16 19:12:46,553 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-16 19:12:46,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 46 events. 1/46 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 99 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2024-11-16 19:12:46,558 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 50 transitions, 116 flow [2024-11-16 19:12:46,563 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 46 transitions, 104 flow [2024-11-16 19:12:46,573 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 19:12:46,584 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;@773e743, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 19:12:46,585 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-16 19:12:46,596 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-16 19:12:46,596 INFO L124 PetriNetUnfolderBase]: 0/25 cut-off events. [2024-11-16 19:12:46,596 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-16 19:12:46,597 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:12:46,597 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:12:46,598 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-16 19:12:46,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:12:46,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1321365468, now seen corresponding path program 1 times [2024-11-16 19:12:46,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:12:46,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028804382] [2024-11-16 19:12:46,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:12:46,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:12:46,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:12:47,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:12:47,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:12:47,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028804382] [2024-11-16 19:12:47,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028804382] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:12:47,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:12:47,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-16 19:12:47,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425649047] [2024-11-16 19:12:47,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:12:47,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 19:12:47,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:12:47,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 19:12:47,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 19:12:47,279 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 50 [2024-11-16 19:12:47,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 46 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:12:47,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:12:47,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 50 [2024-11-16 19:12:47,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:12:53,281 INFO L124 PetriNetUnfolderBase]: 51971/68511 cut-off events. [2024-11-16 19:12:53,282 INFO L125 PetriNetUnfolderBase]: For 236/236 co-relation queries the response was YES. [2024-11-16 19:12:53,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137075 conditions, 68511 events. 51971/68511 cut-off events. For 236/236 co-relation queries the response was YES. Maximal size of possible extension queue 1918. Compared 395816 event pairs, 5855 based on Foata normal form. 1728/70203 useless extension candidates. Maximal degree in co-relation 137063. Up to 59725 conditions per place. [2024-11-16 19:12:53,696 INFO L140 encePairwiseOnDemand]: 46/50 looper letters, 57 selfloop transitions, 2 changer transitions 2/67 dead transitions. [2024-11-16 19:12:53,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 67 transitions, 268 flow [2024-11-16 19:12:53,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 19:12:53,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-16 19:12:53,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 94 transitions. [2024-11-16 19:12:53,707 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6266666666666667 [2024-11-16 19:12:53,709 INFO L175 Difference]: Start difference. First operand has 58 places, 46 transitions, 104 flow. Second operand 3 states and 94 transitions. [2024-11-16 19:12:53,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 67 transitions, 268 flow [2024-11-16 19:12:53,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 67 transitions, 264 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-16 19:12:53,717 INFO L231 Difference]: Finished difference. Result has 55 places, 43 transitions, 98 flow [2024-11-16 19:12:53,719 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=55, PETRI_TRANSITIONS=43} [2024-11-16 19:12:53,724 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, -3 predicate places. [2024-11-16 19:12:53,724 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 43 transitions, 98 flow [2024-11-16 19:12:53,724 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:12:53,724 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:12:53,725 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:12:53,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 19:12:53,725 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-16 19:12:53,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:12:53,727 INFO L85 PathProgramCache]: Analyzing trace with hash -276930701, now seen corresponding path program 1 times [2024-11-16 19:12:53,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:12:53,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132335197] [2024-11-16 19:12:53,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:12:53,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:12:53,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:12:54,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:12:54,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:12:54,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132335197] [2024-11-16 19:12:54,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132335197] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:12:54,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:12:54,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 19:12:54,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265477234] [2024-11-16 19:12:54,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:12:54,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 19:12:54,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:12:54,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 19:12:54,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 19:12:54,369 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 50 [2024-11-16 19:12:54,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 43 transitions, 98 flow. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 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) [2024-11-16 19:12:54,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:12:54,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 50 [2024-11-16 19:12:54,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:13:03,654 INFO L124 PetriNetUnfolderBase]: 107645/143445 cut-off events. [2024-11-16 19:13:03,655 INFO L125 PetriNetUnfolderBase]: For 4120/4120 co-relation queries the response was YES. [2024-11-16 19:13:03,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 290209 conditions, 143445 events. 107645/143445 cut-off events. For 4120/4120 co-relation queries the response was YES. Maximal size of possible extension queue 3809. Compared 928151 event pairs, 4639 based on Foata normal form. 0/140846 useless extension candidates. Maximal degree in co-relation 290199. Up to 64605 conditions per place. [2024-11-16 19:13:04,288 INFO L140 encePairwiseOnDemand]: 36/50 looper letters, 78 selfloop transitions, 12 changer transitions 165/260 dead transitions. [2024-11-16 19:13:04,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 260 transitions, 1070 flow [2024-11-16 19:13:04,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-16 19:13:04,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-16 19:13:04,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 366 transitions. [2024-11-16 19:13:04,292 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.61 [2024-11-16 19:13:04,292 INFO L175 Difference]: Start difference. First operand has 55 places, 43 transitions, 98 flow. Second operand 12 states and 366 transitions. [2024-11-16 19:13:04,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 260 transitions, 1070 flow [2024-11-16 19:13:04,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 260 transitions, 1046 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-16 19:13:04,311 INFO L231 Difference]: Finished difference. Result has 72 places, 52 transitions, 217 flow [2024-11-16 19:13:04,311 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=217, PETRI_PLACES=72, PETRI_TRANSITIONS=52} [2024-11-16 19:13:04,312 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 14 predicate places. [2024-11-16 19:13:04,312 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 52 transitions, 217 flow [2024-11-16 19:13:04,312 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 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) [2024-11-16 19:13:04,312 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:13:04,312 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:13:04,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 19:13:04,313 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-16 19:13:04,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:13:04,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1317150356, now seen corresponding path program 1 times [2024-11-16 19:13:04,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:13:04,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433744225] [2024-11-16 19:13:04,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:13:04,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:13:04,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:13:04,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:13:04,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:13:04,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433744225] [2024-11-16 19:13:04,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433744225] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:13:04,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:13:04,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 19:13:04,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660031802] [2024-11-16 19:13:04,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:13:04,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 19:13:04,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:13:04,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 19:13:04,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 19:13:04,739 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 50 [2024-11-16 19:13:04,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 52 transitions, 217 flow. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:13:04,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:13:04,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 50 [2024-11-16 19:13:04,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:13:13,359 INFO L124 PetriNetUnfolderBase]: 77427/103714 cut-off events. [2024-11-16 19:13:13,359 INFO L125 PetriNetUnfolderBase]: For 111023/111023 co-relation queries the response was YES. [2024-11-16 19:13:13,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 304615 conditions, 103714 events. 77427/103714 cut-off events. For 111023/111023 co-relation queries the response was YES. Maximal size of possible extension queue 2623. Compared 634971 event pairs, 17815 based on Foata normal form. 2592/106281 useless extension candidates. Maximal degree in co-relation 304596. Up to 41029 conditions per place. [2024-11-16 19:13:14,062 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 78 selfloop transitions, 11 changer transitions 118/212 dead transitions. [2024-11-16 19:13:14,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 212 transitions, 1223 flow [2024-11-16 19:13:14,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-16 19:13:14,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-16 19:13:14,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 282 transitions. [2024-11-16 19:13:14,064 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.564 [2024-11-16 19:13:14,064 INFO L175 Difference]: Start difference. First operand has 72 places, 52 transitions, 217 flow. Second operand 10 states and 282 transitions. [2024-11-16 19:13:14,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 212 transitions, 1223 flow [2024-11-16 19:13:16,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 212 transitions, 1147 flow, removed 38 selfloop flow, removed 5 redundant places. [2024-11-16 19:13:16,253 INFO L231 Difference]: Finished difference. Result has 76 places, 58 transitions, 310 flow [2024-11-16 19:13:16,253 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=310, PETRI_PLACES=76, PETRI_TRANSITIONS=58} [2024-11-16 19:13:16,254 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 18 predicate places. [2024-11-16 19:13:16,254 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 58 transitions, 310 flow [2024-11-16 19:13:16,255 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:13:16,255 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:13:16,255 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] [2024-11-16 19:13:16,255 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 19:13:16,255 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-16 19:13:16,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:13:16,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1531570863, now seen corresponding path program 1 times [2024-11-16 19:13:16,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:13:16,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197398478] [2024-11-16 19:13:16,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:13:16,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:13:16,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:13:16,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:13:16,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:13:16,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197398478] [2024-11-16 19:13:16,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197398478] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:13:16,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:13:16,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 19:13:16,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185515017] [2024-11-16 19:13:16,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:13:16,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 19:13:16,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:13:16,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 19:13:16,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 19:13:16,463 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 50 [2024-11-16 19:13:16,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 58 transitions, 310 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 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) [2024-11-16 19:13:16,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:13:16,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 50 [2024-11-16 19:13:16,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:13:21,956 INFO L124 PetriNetUnfolderBase]: 58645/80055 cut-off events. [2024-11-16 19:13:21,956 INFO L125 PetriNetUnfolderBase]: For 127265/127265 co-relation queries the response was YES. [2024-11-16 19:13:22,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 241486 conditions, 80055 events. 58645/80055 cut-off events. For 127265/127265 co-relation queries the response was YES. Maximal size of possible extension queue 2020. Compared 501694 event pairs, 7927 based on Foata normal form. 2872/82910 useless extension candidates. Maximal degree in co-relation 241461. Up to 43761 conditions per place. [2024-11-16 19:13:22,616 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 122 selfloop transitions, 6 changer transitions 1/134 dead transitions. [2024-11-16 19:13:22,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 134 transitions, 1012 flow [2024-11-16 19:13:22,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 19:13:22,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-16 19:13:22,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 127 transitions. [2024-11-16 19:13:22,617 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.635 [2024-11-16 19:13:22,617 INFO L175 Difference]: Start difference. First operand has 76 places, 58 transitions, 310 flow. Second operand 4 states and 127 transitions. [2024-11-16 19:13:22,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 134 transitions, 1012 flow [2024-11-16 19:13:24,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 134 transitions, 993 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-11-16 19:13:24,452 INFO L231 Difference]: Finished difference. Result has 72 places, 62 transitions, 337 flow [2024-11-16 19:13:24,453 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=337, PETRI_PLACES=72, PETRI_TRANSITIONS=62} [2024-11-16 19:13:24,453 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 14 predicate places. [2024-11-16 19:13:24,453 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 62 transitions, 337 flow [2024-11-16 19:13:24,454 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 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) [2024-11-16 19:13:24,454 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:13:24,454 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] [2024-11-16 19:13:24,454 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 19:13:24,454 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-16 19:13:24,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:13:24,455 INFO L85 PathProgramCache]: Analyzing trace with hash 688115601, now seen corresponding path program 1 times [2024-11-16 19:13:24,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:13:24,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541726511] [2024-11-16 19:13:24,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:13:24,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:13:24,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:13:24,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:13:24,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:13:24,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541726511] [2024-11-16 19:13:24,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541726511] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:13:24,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:13:24,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 19:13:24,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812760362] [2024-11-16 19:13:24,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:13:24,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 19:13:24,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:13:24,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 19:13:24,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 19:13:24,875 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 50 [2024-11-16 19:13:24,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 62 transitions, 337 flow. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:13:24,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:13:24,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 50 [2024-11-16 19:13:24,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand