./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix005.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix005.opt.i -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 0c4e58b38f229da1b25a4c7b1c830f1f36e4dc5c1e18903f04a209f4b4cfa3c5 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 14:13:37,435 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 14:13:37,489 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-11 14:13:37,492 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 14:13:37,492 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 14:13:37,515 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 14:13:37,515 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 14:13:37,516 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 14:13:37,516 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 14:13:37,520 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 14:13:37,520 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 14:13:37,520 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 14:13:37,521 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 14:13:37,521 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 14:13:37,522 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 14:13:37,522 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 14:13:37,523 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 14:13:37,523 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 14:13:37,523 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 14:13:37,523 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 14:13:37,538 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 14:13:37,538 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 14:13:37,539 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 14:13:37,539 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 14:13:37,539 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 14:13:37,539 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 14:13:37,540 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 14:13:37,540 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 14:13:37,540 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 14:13:37,540 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 14:13:37,541 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 14:13:37,541 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 14:13:37,541 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 14:13:37,541 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 14:13:37,542 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 14:13:37,542 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 14:13:37,542 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 14:13:37,542 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 14:13:37,542 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 14:13:37,542 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 14:13:37,543 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 14:13:37,543 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 14:13:37,543 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0c4e58b38f229da1b25a4c7b1c830f1f36e4dc5c1e18903f04a209f4b4cfa3c5 [2024-10-11 14:13:37,732 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 14:13:37,755 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 14:13:37,758 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 14:13:37,759 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 14:13:37,759 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 14:13:37,760 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix005.opt.i [2024-10-11 14:13:39,012 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 14:13:39,199 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 14:13:39,206 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix005.opt.i [2024-10-11 14:13:39,216 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/67a150b5b/ed5d8936bda149a9ad9588218057e9bf/FLAGc5dfd594e [2024-10-11 14:13:39,227 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/67a150b5b/ed5d8936bda149a9ad9588218057e9bf [2024-10-11 14:13:39,229 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 14:13:39,230 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 14:13:39,232 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 14:13:39,232 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 14:13:39,236 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 14:13:39,236 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:13:39" (1/1) ... [2024-10-11 14:13:39,237 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4476624b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:13:39, skipping insertion in model container [2024-10-11 14:13:39,237 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:13:39" (1/1) ... [2024-10-11 14:13:39,276 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 14:13:39,426 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/pthread-wmm/mix005.opt.i[944,957] [2024-10-11 14:13:39,603 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 14:13:39,613 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 14:13:39,623 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/pthread-wmm/mix005.opt.i[944,957] [2024-10-11 14:13:39,683 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 14:13:39,716 INFO L204 MainTranslator]: Completed translation [2024-10-11 14:13:39,717 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:13:39 WrapperNode [2024-10-11 14:13:39,717 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 14:13:39,718 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 14:13:39,718 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 14:13:39,718 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 14:13:39,724 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:13:39" (1/1) ... [2024-10-11 14:13:39,745 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:13:39" (1/1) ... [2024-10-11 14:13:39,776 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 151 [2024-10-11 14:13:39,777 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 14:13:39,778 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 14:13:39,778 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 14:13:39,778 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 14:13:39,788 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:13:39" (1/1) ... [2024-10-11 14:13:39,788 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:13:39" (1/1) ... [2024-10-11 14:13:39,796 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:13:39" (1/1) ... [2024-10-11 14:13:39,820 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]. [2024-10-11 14:13:39,821 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:13:39" (1/1) ... [2024-10-11 14:13:39,821 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:13:39" (1/1) ... [2024-10-11 14:13:39,830 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:13:39" (1/1) ... [2024-10-11 14:13:39,835 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:13:39" (1/1) ... [2024-10-11 14:13:39,837 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:13:39" (1/1) ... [2024-10-11 14:13:39,838 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:13:39" (1/1) ... [2024-10-11 14:13:39,842 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 14:13:39,843 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 14:13:39,843 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 14:13:39,843 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 14:13:39,844 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:13:39" (1/1) ... [2024-10-11 14:13:39,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 14:13:39,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:13:39,868 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 14:13:39,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 14:13:39,899 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-11 14:13:39,899 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 14:13:39,899 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-10-11 14:13:39,899 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-10-11 14:13:39,900 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-10-11 14:13:39,900 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-10-11 14:13:39,900 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-10-11 14:13:39,900 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-10-11 14:13:39,900 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-10-11 14:13:39,900 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-10-11 14:13:39,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 14:13:39,900 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-11 14:13:39,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 14:13:39,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 14:13:39,901 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 14:13:40,011 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 14:13:40,012 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 14:13:40,264 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 14:13:40,264 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 14:13:40,445 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 14:13:40,445 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-11 14:13:40,446 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:13:40 BoogieIcfgContainer [2024-10-11 14:13:40,446 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 14:13:40,448 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 14:13:40,448 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 14:13:40,451 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 14:13:40,451 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:13:39" (1/3) ... [2024-10-11 14:13:40,452 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c95619f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:13:40, skipping insertion in model container [2024-10-11 14:13:40,452 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:13:39" (2/3) ... [2024-10-11 14:13:40,453 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c95619f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:13:40, skipping insertion in model container [2024-10-11 14:13:40,453 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:13:40" (3/3) ... [2024-10-11 14:13:40,454 INFO L112 eAbstractionObserver]: Analyzing ICFG mix005.opt.i [2024-10-11 14:13:40,467 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 14:13:40,467 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-11 14:13:40,468 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 14:13:40,509 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-11 14:13:40,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 50 transitions, 116 flow [2024-10-11 14:13:40,563 INFO L124 PetriNetUnfolderBase]: 1/46 cut-off events. [2024-10-11 14:13:40,564 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 14:13:40,568 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 97 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. [2024-10-11 14:13:40,568 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 50 transitions, 116 flow [2024-10-11 14:13:40,571 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 46 transitions, 104 flow [2024-10-11 14:13:40,579 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 14:13:40,585 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;@65fab7c2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 14:13:40,588 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-10-11 14:13:40,595 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 14:13:40,596 INFO L124 PetriNetUnfolderBase]: 0/25 cut-off events. [2024-10-11 14:13:40,596 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 14:13:40,596 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:13:40,596 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:13:40,597 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-11 14:13:40,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:13:40,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1282439787, now seen corresponding path program 1 times [2024-10-11 14:13:40,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:13:40,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252258830] [2024-10-11 14:13:40,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:13:40,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:13:40,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:13:41,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:13:41,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:13:41,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252258830] [2024-10-11 14:13:41,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252258830] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:13:41,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:13:41,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-11 14:13:41,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742009477] [2024-10-11 14:13:41,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:13:41,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 14:13:41,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:13:41,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 14:13:41,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 14:13:41,066 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 50 [2024-10-11 14:13:41,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 46 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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) [2024-10-11 14:13:41,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:13:41,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 50 [2024-10-11 14:13:41,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:13:41,461 INFO L124 PetriNetUnfolderBase]: 879/1527 cut-off events. [2024-10-11 14:13:41,462 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 14:13:41,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2847 conditions, 1527 events. 879/1527 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 10676 event pairs, 159 based on Foata normal form. 60/1531 useless extension candidates. Maximal degree in co-relation 2835. Up to 1009 conditions per place. [2024-10-11 14:13:41,477 INFO L140 encePairwiseOnDemand]: 46/50 looper letters, 26 selfloop transitions, 2 changer transitions 2/53 dead transitions. [2024-10-11 14:13:41,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 53 transitions, 178 flow [2024-10-11 14:13:41,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 14:13:41,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 14:13:41,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 114 transitions. [2024-10-11 14:13:41,488 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.76 [2024-10-11 14:13:41,490 INFO L175 Difference]: Start difference. First operand has 58 places, 46 transitions, 104 flow. Second operand 3 states and 114 transitions. [2024-10-11 14:13:41,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 53 transitions, 178 flow [2024-10-11 14:13:41,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 53 transitions, 174 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-11 14:13:41,495 INFO L231 Difference]: Finished difference. Result has 55 places, 43 transitions, 98 flow [2024-10-11 14:13:41,497 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} [2024-10-11 14:13:41,500 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, -3 predicate places. [2024-10-11 14:13:41,501 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 43 transitions, 98 flow [2024-10-11 14:13:41,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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) [2024-10-11 14:13:41,501 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:13:41,501 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:13:41,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 14:13:41,501 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)] === [2024-10-11 14:13:41,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:13:41,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1465234930, now seen corresponding path program 1 times [2024-10-11 14:13:41,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:13:41,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127735184] [2024-10-11 14:13:41,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:13:41,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:13:41,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:13:41,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:13:41,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:13:41,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127735184] [2024-10-11 14:13:41,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127735184] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:13:41,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:13:41,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 14:13:41,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101135723] [2024-10-11 14:13:41,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:13:41,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 14:13:41,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:13:41,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 14:13:41,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 14:13:41,743 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 50 [2024-10-11 14:13:41,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 43 transitions, 98 flow. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 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) [2024-10-11 14:13:41,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:13:41,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 50 [2024-10-11 14:13:41,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:13:43,879 INFO L124 PetriNetUnfolderBase]: 14679/22002 cut-off events. [2024-10-11 14:13:43,879 INFO L125 PetriNetUnfolderBase]: For 846/846 co-relation queries the response was YES. [2024-10-11 14:13:43,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43142 conditions, 22002 events. 14679/22002 cut-off events. For 846/846 co-relation queries the response was YES. Maximal size of possible extension queue 1258. Compared 163695 event pairs, 3992 based on Foata normal form. 0/21321 useless extension candidates. Maximal degree in co-relation 43132. Up to 9077 conditions per place. [2024-10-11 14:13:43,974 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 41 selfloop transitions, 8 changer transitions 84/148 dead transitions. [2024-10-11 14:13:43,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 148 transitions, 592 flow [2024-10-11 14:13:43,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 14:13:43,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-11 14:13:43,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 306 transitions. [2024-10-11 14:13:43,977 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.68 [2024-10-11 14:13:43,977 INFO L175 Difference]: Start difference. First operand has 55 places, 43 transitions, 98 flow. Second operand 9 states and 306 transitions. [2024-10-11 14:13:43,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 148 transitions, 592 flow [2024-10-11 14:13:43,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 148 transitions, 574 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 14:13:43,988 INFO L231 Difference]: Finished difference. Result has 68 places, 49 transitions, 204 flow [2024-10-11 14:13:43,988 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=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=204, PETRI_PLACES=68, PETRI_TRANSITIONS=49} [2024-10-11 14:13:43,989 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 10 predicate places. [2024-10-11 14:13:43,989 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 49 transitions, 204 flow [2024-10-11 14:13:43,989 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 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) [2024-10-11 14:13:43,989 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:13:43,990 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:13:43,990 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 14:13:43,991 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)] === [2024-10-11 14:13:43,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:13:43,992 INFO L85 PathProgramCache]: Analyzing trace with hash -239089613, now seen corresponding path program 1 times [2024-10-11 14:13:43,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:13:43,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266152668] [2024-10-11 14:13:43,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:13:43,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:13:44,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:13:44,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:13:44,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:13:44,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266152668] [2024-10-11 14:13:44,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266152668] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:13:44,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:13:44,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 14:13:44,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422968786] [2024-10-11 14:13:44,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:13:44,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 14:13:44,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:13:44,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 14:13:44,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 14:13:44,151 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 50 [2024-10-11 14:13:44,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 49 transitions, 204 flow. Second operand has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 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) [2024-10-11 14:13:44,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:13:44,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 50 [2024-10-11 14:13:44,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:13:46,027 INFO L124 PetriNetUnfolderBase]: 10337/16473 cut-off events. [2024-10-11 14:13:46,028 INFO L125 PetriNetUnfolderBase]: For 25213/25273 co-relation queries the response was YES. [2024-10-11 14:13:46,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51067 conditions, 16473 events. 10337/16473 cut-off events. For 25213/25273 co-relation queries the response was YES. Maximal size of possible extension queue 906. Compared 126479 event pairs, 1897 based on Foata normal form. 450/16837 useless extension candidates. Maximal degree in co-relation 51049. Up to 6057 conditions per place. [2024-10-11 14:13:46,124 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 50 selfloop transitions, 9 changer transitions 76/150 dead transitions. [2024-10-11 14:13:46,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 150 transitions, 1006 flow [2024-10-11 14:13:46,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 14:13:46,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-11 14:13:46,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 312 transitions. [2024-10-11 14:13:46,127 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.624 [2024-10-11 14:13:46,127 INFO L175 Difference]: Start difference. First operand has 68 places, 49 transitions, 204 flow. Second operand 10 states and 312 transitions. [2024-10-11 14:13:46,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 150 transitions, 1006 flow [2024-10-11 14:13:46,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 150 transitions, 856 flow, removed 38 selfloop flow, removed 4 redundant places. [2024-10-11 14:13:46,215 INFO L231 Difference]: Finished difference. Result has 75 places, 54 transitions, 270 flow [2024-10-11 14:13:46,215 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=270, PETRI_PLACES=75, PETRI_TRANSITIONS=54} [2024-10-11 14:13:46,216 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 17 predicate places. [2024-10-11 14:13:46,216 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 54 transitions, 270 flow [2024-10-11 14:13:46,216 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 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) [2024-10-11 14:13:46,216 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:13:46,217 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:13:46,217 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 14:13:46,217 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)] === [2024-10-11 14:13:46,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:13:46,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1980847414, now seen corresponding path program 1 times [2024-10-11 14:13:46,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:13:46,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376124023] [2024-10-11 14:13:46,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:13:46,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:13:46,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:13:46,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:13:46,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:13:46,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376124023] [2024-10-11 14:13:46,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376124023] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:13:46,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:13:46,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 14:13:46,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473982965] [2024-10-11 14:13:46,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:13:46,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 14:13:46,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:13:46,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 14:13:46,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 14:13:46,399 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 50 [2024-10-11 14:13:46,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 54 transitions, 270 flow. Second operand has 5 states, 5 states have (on average 25.2) internal successors, (126), 5 states have internal predecessors, (126), 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) [2024-10-11 14:13:46,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:13:46,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 50 [2024-10-11 14:13:46,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:13:47,915 INFO L124 PetriNetUnfolderBase]: 7635/13292 cut-off events. [2024-10-11 14:13:47,915 INFO L125 PetriNetUnfolderBase]: For 26047/26335 co-relation queries the response was YES. [2024-10-11 14:13:47,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40394 conditions, 13292 events. 7635/13292 cut-off events. For 26047/26335 co-relation queries the response was YES. Maximal size of possible extension queue 773. Compared 110558 event pairs, 3711 based on Foata normal form. 330/13317 useless extension candidates. Maximal degree in co-relation 40369. Up to 7913 conditions per place. [2024-10-11 14:13:48,013 INFO L140 encePairwiseOnDemand]: 44/50 looper letters, 45 selfloop transitions, 6 changer transitions 35/109 dead transitions. [2024-10-11 14:13:48,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 109 transitions, 724 flow [2024-10-11 14:13:48,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 14:13:48,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-11 14:13:48,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 228 transitions. [2024-10-11 14:13:48,015 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6514285714285715 [2024-10-11 14:13:48,016 INFO L175 Difference]: Start difference. First operand has 75 places, 54 transitions, 270 flow. Second operand 7 states and 228 transitions. [2024-10-11 14:13:48,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 109 transitions, 724 flow [2024-10-11 14:13:48,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 109 transitions, 691 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-10-11 14:13:48,210 INFO L231 Difference]: Finished difference. Result has 75 places, 58 transitions, 331 flow [2024-10-11 14:13:48,210 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=331, PETRI_PLACES=75, PETRI_TRANSITIONS=58} [2024-10-11 14:13:48,212 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 17 predicate places. [2024-10-11 14:13:48,212 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 58 transitions, 331 flow [2024-10-11 14:13:48,212 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 5 states have internal predecessors, (126), 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) [2024-10-11 14:13:48,212 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:13:48,212 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] [2024-10-11 14:13:48,212 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-11 14:13:48,213 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)] === [2024-10-11 14:13:48,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:13:48,213 INFO L85 PathProgramCache]: Analyzing trace with hash 70593429, now seen corresponding path program 1 times [2024-10-11 14:13:48,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:13:48,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052075351] [2024-10-11 14:13:48,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:13:48,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:13:48,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:13:48,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:13:48,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:13:48,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052075351] [2024-10-11 14:13:48,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052075351] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:13:48,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:13:48,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 14:13:48,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379844967] [2024-10-11 14:13:48,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:13:48,451 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 14:13:48,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:13:48,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 14:13:48,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 14:13:48,473 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 50 [2024-10-11 14:13:48,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 58 transitions, 331 flow. Second operand has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 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) [2024-10-11 14:13:48,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:13:48,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 50 [2024-10-11 14:13:48,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:13:49,855 INFO L124 PetriNetUnfolderBase]: 8358/13610 cut-off events. [2024-10-11 14:13:49,855 INFO L125 PetriNetUnfolderBase]: For 30096/30141 co-relation queries the response was YES. [2024-10-11 14:13:49,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45329 conditions, 13610 events. 8358/13610 cut-off events. For 30096/30141 co-relation queries the response was YES. Maximal size of possible extension queue 697. Compared 103257 event pairs, 1215 based on Foata normal form. 272/13799 useless extension candidates. Maximal degree in co-relation 45302. Up to 5878 conditions per place. [2024-10-11 14:13:49,931 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 64 selfloop transitions, 16 changer transitions 64/159 dead transitions. [2024-10-11 14:13:49,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 159 transitions, 1215 flow [2024-10-11 14:13:49,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 14:13:49,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-11 14:13:49,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 311 transitions. [2024-10-11 14:13:49,933 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.622 [2024-10-11 14:13:49,933 INFO L175 Difference]: Start difference. First operand has 75 places, 58 transitions, 331 flow. Second operand 10 states and 311 transitions. [2024-10-11 14:13:49,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 159 transitions, 1215 flow [2024-10-11 14:13:50,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 159 transitions, 1153 flow, removed 27 selfloop flow, removed 7 redundant places. [2024-10-11 14:13:50,222 INFO L231 Difference]: Finished difference. Result has 82 places, 67 transitions, 478 flow [2024-10-11 14:13:50,222 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=478, PETRI_PLACES=82, PETRI_TRANSITIONS=67} [2024-10-11 14:13:50,224 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 24 predicate places. [2024-10-11 14:13:50,224 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 67 transitions, 478 flow [2024-10-11 14:13:50,225 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 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) [2024-10-11 14:13:50,225 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:13:50,225 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] [2024-10-11 14:13:50,225 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-11 14:13:50,226 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-11 14:13:50,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:13:50,228 INFO L85 PathProgramCache]: Analyzing trace with hash -983708820, now seen corresponding path program 1 times [2024-10-11 14:13:50,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:13:50,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551877567] [2024-10-11 14:13:50,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:13:50,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:13:50,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:13:50,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:13:50,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:13:50,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551877567] [2024-10-11 14:13:50,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551877567] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:13:50,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:13:50,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 14:13:50,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408240912] [2024-10-11 14:13:50,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:13:50,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 14:13:50,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:13:50,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 14:13:50,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 14:13:50,438 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 50 [2024-10-11 14:13:50,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 67 transitions, 478 flow. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 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) [2024-10-11 14:13:50,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:13:50,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 50 [2024-10-11 14:13:50,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:13:52,928 INFO L124 PetriNetUnfolderBase]: 16074/24503 cut-off events. [2024-10-11 14:13:52,928 INFO L125 PetriNetUnfolderBase]: For 51626/55004 co-relation queries the response was YES. [2024-10-11 14:13:53,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71216 conditions, 24503 events. 16074/24503 cut-off events. For 51626/55004 co-relation queries the response was YES. Maximal size of possible extension queue 1297. Compared 184085 event pairs, 2794 based on Foata normal form. 1113/24733 useless extension candidates. Maximal degree in co-relation 71185. Up to 12116 conditions per place. [2024-10-11 14:13:53,125 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 59 selfloop transitions, 6 changer transitions 0/103 dead transitions. [2024-10-11 14:13:53,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 103 transitions, 784 flow [2024-10-11 14:13:53,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 14:13:53,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 14:13:53,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 143 transitions. [2024-10-11 14:13:53,126 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.715 [2024-10-11 14:13:53,126 INFO L175 Difference]: Start difference. First operand has 82 places, 67 transitions, 478 flow. Second operand 4 states and 143 transitions. [2024-10-11 14:13:53,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 103 transitions, 784 flow [2024-10-11 14:13:53,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 103 transitions, 762 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-10-11 14:13:53,433 INFO L231 Difference]: Finished difference. Result has 76 places, 72 transitions, 502 flow [2024-10-11 14:13:53,433 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=456, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=502, PETRI_PLACES=76, PETRI_TRANSITIONS=72} [2024-10-11 14:13:53,434 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 18 predicate places. [2024-10-11 14:13:53,434 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 72 transitions, 502 flow [2024-10-11 14:13:53,434 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 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) [2024-10-11 14:13:53,434 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:13:53,434 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, 1, 1] [2024-10-11 14:13:53,434 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-11 14:13:53,434 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-11 14:13:53,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:13:53,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1875437511, now seen corresponding path program 1 times [2024-10-11 14:13:53,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:13:53,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963746122] [2024-10-11 14:13:53,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:13:53,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:13:53,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:13:53,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:13:53,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:13:53,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963746122] [2024-10-11 14:13:53,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963746122] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:13:53,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:13:53,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 14:13:53,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722420532] [2024-10-11 14:13:53,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:13:53,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 14:13:53,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:13:53,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 14:13:53,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 14:13:53,621 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 50 [2024-10-11 14:13:53,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 72 transitions, 502 flow. Second operand has 6 states, 6 states have (on average 22.0) internal successors, (132), 6 states have internal predecessors, (132), 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) [2024-10-11 14:13:53,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:13:53,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 50 [2024-10-11 14:13:53,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:13:56,634 INFO L124 PetriNetUnfolderBase]: 19384/30042 cut-off events. [2024-10-11 14:13:56,635 INFO L125 PetriNetUnfolderBase]: For 71212/72525 co-relation queries the response was YES. [2024-10-11 14:13:56,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99998 conditions, 30042 events. 19384/30042 cut-off events. For 71212/72525 co-relation queries the response was YES. Maximal size of possible extension queue 1434. Compared 236681 event pairs, 8089 based on Foata normal form. 408/27854 useless extension candidates. Maximal degree in co-relation 99968. Up to 13378 conditions per place. [2024-10-11 14:13:56,797 INFO L140 encePairwiseOnDemand]: 42/50 looper letters, 90 selfloop transitions, 21 changer transitions 8/139 dead transitions. [2024-10-11 14:13:56,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 139 transitions, 1058 flow [2024-10-11 14:13:56,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 14:13:56,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-11 14:13:56,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 251 transitions. [2024-10-11 14:13:56,798 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6275 [2024-10-11 14:13:56,799 INFO L175 Difference]: Start difference. First operand has 76 places, 72 transitions, 502 flow. Second operand 8 states and 251 transitions. [2024-10-11 14:13:56,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 139 transitions, 1058 flow [2024-10-11 14:13:56,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 139 transitions, 1042 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-10-11 14:13:56,868 INFO L231 Difference]: Finished difference. Result has 86 places, 75 transitions, 599 flow [2024-10-11 14:13:56,868 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=490, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=599, PETRI_PLACES=86, PETRI_TRANSITIONS=75} [2024-10-11 14:13:56,868 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 28 predicate places. [2024-10-11 14:13:56,869 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 75 transitions, 599 flow [2024-10-11 14:13:56,869 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.0) internal successors, (132), 6 states have internal predecessors, (132), 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) [2024-10-11 14:13:56,869 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:13:56,869 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, 1, 1] [2024-10-11 14:13:56,869 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-11 14:13:56,869 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-11 14:13:56,869 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:13:56,869 INFO L85 PathProgramCache]: Analyzing trace with hash 719110203, now seen corresponding path program 1 times [2024-10-11 14:13:56,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:13:56,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389159739] [2024-10-11 14:13:56,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:13:56,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:13:56,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:13:57,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:13:57,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:13:57,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389159739] [2024-10-11 14:13:57,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389159739] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:13:57,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:13:57,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 14:13:57,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130587638] [2024-10-11 14:13:57,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:13:57,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 14:13:57,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:13:57,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 14:13:57,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 14:13:57,011 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 50 [2024-10-11 14:13:57,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 75 transitions, 599 flow. Second operand has 5 states, 5 states have (on average 25.2) internal successors, (126), 5 states have internal predecessors, (126), 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) [2024-10-11 14:13:57,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:13:57,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 50 [2024-10-11 14:13:57,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:13:59,973 INFO L124 PetriNetUnfolderBase]: 19266/29660 cut-off events. [2024-10-11 14:13:59,973 INFO L125 PetriNetUnfolderBase]: For 58503/62883 co-relation queries the response was YES. [2024-10-11 14:14:00,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92024 conditions, 29660 events. 19266/29660 cut-off events. For 58503/62883 co-relation queries the response was YES. Maximal size of possible extension queue 1519. Compared 227664 event pairs, 1974 based on Foata normal form. 1511/30447 useless extension candidates. Maximal degree in co-relation 91989. Up to 11568 conditions per place. [2024-10-11 14:14:00,310 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 76 selfloop transitions, 10 changer transitions 3/126 dead transitions. [2024-10-11 14:14:00,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 126 transitions, 1040 flow [2024-10-11 14:14:00,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 14:14:00,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 14:14:00,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 183 transitions. [2024-10-11 14:14:00,311 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.732 [2024-10-11 14:14:00,311 INFO L175 Difference]: Start difference. First operand has 86 places, 75 transitions, 599 flow. Second operand 5 states and 183 transitions. [2024-10-11 14:14:00,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 126 transitions, 1040 flow [2024-10-11 14:14:00,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 126 transitions, 1014 flow, removed 13 selfloop flow, removed 0 redundant places. [2024-10-11 14:14:00,477 INFO L231 Difference]: Finished difference. Result has 92 places, 77 transitions, 612 flow [2024-10-11 14:14:00,477 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=573, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=612, PETRI_PLACES=92, PETRI_TRANSITIONS=77} [2024-10-11 14:14:00,478 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 34 predicate places. [2024-10-11 14:14:00,478 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 77 transitions, 612 flow [2024-10-11 14:14:00,478 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 5 states have internal predecessors, (126), 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) [2024-10-11 14:14:00,478 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:14:00,478 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, 1, 1, 1, 1, 1] [2024-10-11 14:14:00,478 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-11 14:14:00,478 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-11 14:14:00,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:14:00,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1307192201, now seen corresponding path program 1 times [2024-10-11 14:14:00,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:14:00,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042268261] [2024-10-11 14:14:00,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:14:00,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:14:00,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:14:00,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:14:00,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:14:00,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042268261] [2024-10-11 14:14:00,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042268261] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:14:00,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:14:00,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-11 14:14:00,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983144325] [2024-10-11 14:14:00,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:14:00,671 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 14:14:00,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:14:00,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 14:14:00,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-11 14:14:00,686 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 50 [2024-10-11 14:14:00,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 77 transitions, 612 flow. Second operand has 7 states, 7 states have (on average 21.0) internal successors, (147), 7 states have internal predecessors, (147), 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) [2024-10-11 14:14:00,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:14:00,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 50 [2024-10-11 14:14:00,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:14:05,020 INFO L124 PetriNetUnfolderBase]: 25893/42609 cut-off events. [2024-10-11 14:14:05,020 INFO L125 PetriNetUnfolderBase]: For 128127/134524 co-relation queries the response was YES. [2024-10-11 14:14:05,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145490 conditions, 42609 events. 25893/42609 cut-off events. For 128127/134524 co-relation queries the response was YES. Maximal size of possible extension queue 2328. Compared 378661 event pairs, 6424 based on Foata normal form. 661/40019 useless extension candidates. Maximal degree in co-relation 145451. Up to 13218 conditions per place. [2024-10-11 14:14:05,294 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 101 selfloop transitions, 36 changer transitions 15/176 dead transitions. [2024-10-11 14:14:05,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 176 transitions, 1579 flow [2024-10-11 14:14:05,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 14:14:05,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-11 14:14:05,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 261 transitions. [2024-10-11 14:14:05,296 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6525 [2024-10-11 14:14:05,296 INFO L175 Difference]: Start difference. First operand has 92 places, 77 transitions, 612 flow. Second operand 8 states and 261 transitions. [2024-10-11 14:14:05,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 176 transitions, 1579 flow [2024-10-11 14:14:05,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 176 transitions, 1548 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-10-11 14:14:05,719 INFO L231 Difference]: Finished difference. Result has 98 places, 96 transitions, 970 flow [2024-10-11 14:14:05,720 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=591, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=970, PETRI_PLACES=98, PETRI_TRANSITIONS=96} [2024-10-11 14:14:05,720 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 40 predicate places. [2024-10-11 14:14:05,720 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 96 transitions, 970 flow [2024-10-11 14:14:05,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.0) internal successors, (147), 7 states have internal predecessors, (147), 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) [2024-10-11 14:14:05,720 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:14:05,720 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, 1, 1, 1, 1, 1] [2024-10-11 14:14:05,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-11 14:14:05,721 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-11 14:14:05,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:14:05,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1587463403, now seen corresponding path program 2 times [2024-10-11 14:14:05,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:14:05,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800923235] [2024-10-11 14:14:05,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:14:05,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:14:05,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:14:05,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:14:05,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:14:05,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800923235] [2024-10-11 14:14:05,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800923235] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:14:05,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:14:05,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 14:14:05,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534247552] [2024-10-11 14:14:05,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:14:05,939 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 14:14:05,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:14:05,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 14:14:05,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-11 14:14:05,945 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 50 [2024-10-11 14:14:05,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 96 transitions, 970 flow. Second operand has 6 states, 6 states have (on average 25.0) internal successors, (150), 6 states have internal predecessors, (150), 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) [2024-10-11 14:14:05,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:14:05,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 50 [2024-10-11 14:14:05,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:14:10,336 INFO L124 PetriNetUnfolderBase]: 27120/41126 cut-off events. [2024-10-11 14:14:10,336 INFO L125 PetriNetUnfolderBase]: For 106364/116771 co-relation queries the response was YES. [2024-10-11 14:14:10,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138429 conditions, 41126 events. 27120/41126 cut-off events. For 106364/116771 co-relation queries the response was YES. Maximal size of possible extension queue 2337. Compared 323845 event pairs, 1859 based on Foata normal form. 2222/42001 useless extension candidates. Maximal degree in co-relation 138387. Up to 13584 conditions per place. [2024-10-11 14:14:10,635 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 93 selfloop transitions, 14 changer transitions 11/168 dead transitions. [2024-10-11 14:14:10,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 168 transitions, 1704 flow [2024-10-11 14:14:10,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 14:14:10,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 14:14:10,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 221 transitions. [2024-10-11 14:14:10,637 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7366666666666667 [2024-10-11 14:14:10,637 INFO L175 Difference]: Start difference. First operand has 98 places, 96 transitions, 970 flow. Second operand 6 states and 221 transitions. [2024-10-11 14:14:10,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 168 transitions, 1704 flow [2024-10-11 14:14:10,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 168 transitions, 1628 flow, removed 9 selfloop flow, removed 1 redundant places. [2024-10-11 14:14:10,784 INFO L231 Difference]: Finished difference. Result has 104 places, 98 transitions, 962 flow [2024-10-11 14:14:10,784 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=916, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=962, PETRI_PLACES=104, PETRI_TRANSITIONS=98} [2024-10-11 14:14:10,785 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 46 predicate places. [2024-10-11 14:14:10,785 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 98 transitions, 962 flow [2024-10-11 14:14:10,785 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.0) internal successors, (150), 6 states have internal predecessors, (150), 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) [2024-10-11 14:14:10,785 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:14:10,785 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:14:10,785 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-11 14:14:10,786 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-11 14:14:10,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:14:10,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1173829625, now seen corresponding path program 1 times [2024-10-11 14:14:10,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:14:10,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826103778] [2024-10-11 14:14:10,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:14:10,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:14:10,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:14:11,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:14:11,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:14:11,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826103778] [2024-10-11 14:14:11,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826103778] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:14:11,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:14:11,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 14:14:11,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275118419] [2024-10-11 14:14:11,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:14:11,161 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 14:14:11,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:14:11,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 14:14:11,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-11 14:14:11,167 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 50 [2024-10-11 14:14:11,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 98 transitions, 962 flow. Second operand has 7 states, 7 states have (on average 24.857142857142858) internal successors, (174), 7 states have internal predecessors, (174), 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) [2024-10-11 14:14:11,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:14:11,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 50 [2024-10-11 14:14:11,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:14:15,059 INFO L124 PetriNetUnfolderBase]: 23795/35969 cut-off events. [2024-10-11 14:14:15,059 INFO L125 PetriNetUnfolderBase]: For 124587/135958 co-relation queries the response was YES. [2024-10-11 14:14:15,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135923 conditions, 35969 events. 23795/35969 cut-off events. For 124587/135958 co-relation queries the response was YES. Maximal size of possible extension queue 2317. Compared 283471 event pairs, 1759 based on Foata normal form. 1336/35985 useless extension candidates. Maximal degree in co-relation 135878. Up to 13484 conditions per place. [2024-10-11 14:14:15,300 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 75 selfloop transitions, 18 changer transitions 22/155 dead transitions. [2024-10-11 14:14:15,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 155 transitions, 1489 flow [2024-10-11 14:14:15,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 14:14:15,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-11 14:14:15,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 241 transitions. [2024-10-11 14:14:15,302 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6885714285714286 [2024-10-11 14:14:15,302 INFO L175 Difference]: Start difference. First operand has 104 places, 98 transitions, 962 flow. Second operand 7 states and 241 transitions. [2024-10-11 14:14:15,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 155 transitions, 1489 flow [2024-10-11 14:14:15,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 155 transitions, 1392 flow, removed 28 selfloop flow, removed 10 redundant places. [2024-10-11 14:14:15,911 INFO L231 Difference]: Finished difference. Result has 99 places, 86 transitions, 752 flow [2024-10-11 14:14:15,911 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=865, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=752, PETRI_PLACES=99, PETRI_TRANSITIONS=86} [2024-10-11 14:14:15,911 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 41 predicate places. [2024-10-11 14:14:15,912 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 86 transitions, 752 flow [2024-10-11 14:14:15,912 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.857142857142858) internal successors, (174), 7 states have internal predecessors, (174), 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) [2024-10-11 14:14:15,912 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:14:15,912 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:14:15,912 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-11 14:14:15,912 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-11 14:14:15,912 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:14:15,913 INFO L85 PathProgramCache]: Analyzing trace with hash -2114408251, now seen corresponding path program 1 times [2024-10-11 14:14:15,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:14:15,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385578232] [2024-10-11 14:14:15,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:14:15,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:14:15,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat