./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/mix023_power.oepc_pso.oepc_rmo.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix023_power.oepc_pso.oepc_rmo.oepc.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b51bd5b35703bd543bead4074e6d14da7b357845ee956f8678aa2abe4dcc1210 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 06:54:35,747 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 06:54:35,815 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-13 06:54:35,820 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 06:54:35,820 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 06:54:35,857 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 06:54:35,857 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 06:54:35,858 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 06:54:35,859 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 06:54:35,860 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 06:54:35,860 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 06:54:35,861 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 06:54:35,861 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 06:54:35,864 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 06:54:35,864 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 06:54:35,864 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 06:54:35,864 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 06:54:35,865 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 06:54:35,865 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 06:54:35,865 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 06:54:35,866 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 06:54:35,866 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 06:54:35,866 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 06:54:35,867 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 06:54:35,867 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 06:54:35,867 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 06:54:35,868 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 06:54:35,868 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 06:54:35,868 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 06:54:35,869 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 06:54:35,869 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 06:54:35,869 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 06:54:35,870 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 06:54:35,870 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 06:54:35,870 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 06:54:35,871 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 06:54:35,871 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 06:54:35,871 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 06:54:35,871 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 06:54:35,872 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 06:54:35,872 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 06:54:35,872 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 06:54:35,873 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b51bd5b35703bd543bead4074e6d14da7b357845ee956f8678aa2abe4dcc1210 [2024-10-13 06:54:36,112 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 06:54:36,135 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 06:54:36,139 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 06:54:36,140 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 06:54:36,140 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 06:54:36,142 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix023_power.oepc_pso.oepc_rmo.oepc.i [2024-10-13 06:54:37,579 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 06:54:37,832 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 06:54:37,833 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix023_power.oepc_pso.oepc_rmo.oepc.i [2024-10-13 06:54:37,853 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5df019d25/0746f9deefb64f2f9e31a0a3b046c365/FLAG49b72a2d2 [2024-10-13 06:54:37,868 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5df019d25/0746f9deefb64f2f9e31a0a3b046c365 [2024-10-13 06:54:37,871 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 06:54:37,874 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 06:54:37,877 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 06:54:37,878 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 06:54:37,883 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 06:54:37,884 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:54:37" (1/1) ... [2024-10-13 06:54:37,886 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d2d83e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:54:37, skipping insertion in model container [2024-10-13 06:54:37,887 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:54:37" (1/1) ... [2024-10-13 06:54:37,931 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 06:54:38,131 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/mix023_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2024-10-13 06:54:38,360 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 06:54:38,376 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 06:54:38,389 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/mix023_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2024-10-13 06:54:38,455 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 06:54:38,505 INFO L204 MainTranslator]: Completed translation [2024-10-13 06:54:38,505 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:54:38 WrapperNode [2024-10-13 06:54:38,505 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 06:54:38,509 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 06:54:38,510 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 06:54:38,510 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 06:54:38,518 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:54:38" (1/1) ... [2024-10-13 06:54:38,543 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:54:38" (1/1) ... [2024-10-13 06:54:38,584 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 128 [2024-10-13 06:54:38,585 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 06:54:38,586 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 06:54:38,586 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 06:54:38,586 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 06:54:38,597 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:54:38" (1/1) ... [2024-10-13 06:54:38,598 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:54:38" (1/1) ... [2024-10-13 06:54:38,601 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:54:38" (1/1) ... [2024-10-13 06:54:38,630 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]. [2024-10-13 06:54:38,632 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:54:38" (1/1) ... [2024-10-13 06:54:38,632 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:54:38" (1/1) ... [2024-10-13 06:54:38,642 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:54:38" (1/1) ... [2024-10-13 06:54:38,647 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:54:38" (1/1) ... [2024-10-13 06:54:38,653 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:54:38" (1/1) ... [2024-10-13 06:54:38,655 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:54:38" (1/1) ... [2024-10-13 06:54:38,661 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 06:54:38,662 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 06:54:38,662 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 06:54:38,663 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 06:54:38,667 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:54:38" (1/1) ... [2024-10-13 06:54:38,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 06:54:38,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 06:54:38,699 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-13 06:54:38,706 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-13 06:54:38,751 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-13 06:54:38,752 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 06:54:38,752 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-10-13 06:54:38,752 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-10-13 06:54:38,752 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-10-13 06:54:38,753 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-10-13 06:54:38,753 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-10-13 06:54:38,753 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-10-13 06:54:38,753 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-10-13 06:54:38,753 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-10-13 06:54:38,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 06:54:38,754 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-13 06:54:38,754 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 06:54:38,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 06:54:38,756 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-13 06:54:38,890 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 06:54:38,892 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 06:54:39,233 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 06:54:39,233 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 06:54:39,474 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 06:54:39,474 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-13 06:54:39,475 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:54:39 BoogieIcfgContainer [2024-10-13 06:54:39,475 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 06:54:39,478 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 06:54:39,478 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 06:54:39,482 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 06:54:39,482 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:54:37" (1/3) ... [2024-10-13 06:54:39,483 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b6660d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:54:39, skipping insertion in model container [2024-10-13 06:54:39,484 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:54:38" (2/3) ... [2024-10-13 06:54:39,485 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b6660d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:54:39, skipping insertion in model container [2024-10-13 06:54:39,486 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:54:39" (3/3) ... [2024-10-13 06:54:39,487 INFO L112 eAbstractionObserver]: Analyzing ICFG mix023_power.oepc_pso.oepc_rmo.oepc.i [2024-10-13 06:54:39,504 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 06:54:39,504 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-13 06:54:39,504 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 06:54:39,574 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-13 06:54:39,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 50 transitions, 116 flow [2024-10-13 06:54:39,652 INFO L124 PetriNetUnfolderBase]: 1/46 cut-off events. [2024-10-13 06:54:39,652 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 06:54:39,657 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 96 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. [2024-10-13 06:54:39,658 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 50 transitions, 116 flow [2024-10-13 06:54:39,663 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 46 transitions, 104 flow [2024-10-13 06:54:39,677 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 06:54:39,684 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;@78183a7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 06:54:39,685 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-10-13 06:54:39,691 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 06:54:39,691 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-10-13 06:54:39,691 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 06:54:39,691 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 06:54:39,692 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-10-13 06:54:39,693 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-13 06:54:39,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 06:54:39,699 INFO L85 PathProgramCache]: Analyzing trace with hash 11935288, now seen corresponding path program 1 times [2024-10-13 06:54:39,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 06:54:39,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058534035] [2024-10-13 06:54:39,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 06:54:39,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 06:54:39,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 06:54:40,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 06:54:40,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 06:54:40,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058534035] [2024-10-13 06:54:40,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058534035] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 06:54:40,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 06:54:40,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-13 06:54:40,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073910513] [2024-10-13 06:54:40,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 06:54:40,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 06:54:40,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 06:54:40,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 06:54:40,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 06:54:40,246 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 50 [2024-10-13 06:54:40,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 46 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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) [2024-10-13 06:54:40,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 06:54:40,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 50 [2024-10-13 06:54:40,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 06:54:41,098 INFO L124 PetriNetUnfolderBase]: 2495/3958 cut-off events. [2024-10-13 06:54:41,098 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2024-10-13 06:54:41,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7534 conditions, 3958 events. 2495/3958 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 24871 event pairs, 1647 based on Foata normal form. 135/4029 useless extension candidates. Maximal degree in co-relation 7522. Up to 2779 conditions per place. [2024-10-13 06:54:41,134 INFO L140 encePairwiseOnDemand]: 46/50 looper letters, 37 selfloop transitions, 2 changer transitions 2/62 dead transitions. [2024-10-13 06:54:41,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 62 transitions, 227 flow [2024-10-13 06:54:41,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 06:54:41,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 06:54:41,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 119 transitions. [2024-10-13 06:54:41,147 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7933333333333333 [2024-10-13 06:54:41,148 INFO L175 Difference]: Start difference. First operand has 58 places, 46 transitions, 104 flow. Second operand 3 states and 119 transitions. [2024-10-13 06:54:41,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 62 transitions, 227 flow [2024-10-13 06:54:41,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 62 transitions, 220 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-13 06:54:41,155 INFO L231 Difference]: Finished difference. Result has 55 places, 43 transitions, 98 flow [2024-10-13 06:54:41,158 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} [2024-10-13 06:54:41,163 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, -3 predicate places. [2024-10-13 06:54:41,163 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 43 transitions, 98 flow [2024-10-13 06:54:41,163 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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) [2024-10-13 06:54:41,163 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 06:54:41,164 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 06:54:41,164 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 06:54:41,164 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-13 06:54:41,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 06:54:41,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1534029066, now seen corresponding path program 1 times [2024-10-13 06:54:41,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 06:54:41,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710519878] [2024-10-13 06:54:41,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 06:54:41,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 06:54:41,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 06:54:41,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 06:54:41,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 06:54:41,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710519878] [2024-10-13 06:54:41,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710519878] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 06:54:41,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 06:54:41,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 06:54:41,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952046363] [2024-10-13 06:54:41,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 06:54:41,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 06:54:41,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 06:54:41,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 06:54:41,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-13 06:54:41,544 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-10-13 06:54:41,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 43 transitions, 98 flow. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 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) [2024-10-13 06:54:41,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 06:54:41,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-10-13 06:54:41,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 06:54:49,526 INFO L124 PetriNetUnfolderBase]: 45528/64239 cut-off events. [2024-10-13 06:54:49,526 INFO L125 PetriNetUnfolderBase]: For 2815/2815 co-relation queries the response was YES. [2024-10-13 06:54:49,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128399 conditions, 64239 events. 45528/64239 cut-off events. For 2815/2815 co-relation queries the response was YES. Maximal size of possible extension queue 2669. Compared 458486 event pairs, 10423 based on Foata normal form. 0/62696 useless extension candidates. Maximal degree in co-relation 128389. Up to 22989 conditions per place. [2024-10-13 06:54:49,976 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 48 selfloop transitions, 9 changer transitions 109/177 dead transitions. [2024-10-13 06:54:49,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 177 transitions, 716 flow [2024-10-13 06:54:49,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 06:54:49,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-13 06:54:49,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 303 transitions. [2024-10-13 06:54:49,981 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6733333333333333 [2024-10-13 06:54:49,981 INFO L175 Difference]: Start difference. First operand has 55 places, 43 transitions, 98 flow. Second operand 9 states and 303 transitions. [2024-10-13 06:54:49,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 177 transitions, 716 flow [2024-10-13 06:54:49,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 177 transitions, 698 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 06:54:49,991 INFO L231 Difference]: Finished difference. Result has 68 places, 50 transitions, 218 flow [2024-10-13 06:54:49,991 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=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=218, PETRI_PLACES=68, PETRI_TRANSITIONS=50} [2024-10-13 06:54:49,992 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 10 predicate places. [2024-10-13 06:54:49,992 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 50 transitions, 218 flow [2024-10-13 06:54:49,993 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 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) [2024-10-13 06:54:49,993 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 06:54:49,993 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 06:54:49,993 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 06:54:49,994 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-13 06:54:49,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 06:54:49,996 INFO L85 PathProgramCache]: Analyzing trace with hash 475753509, now seen corresponding path program 1 times [2024-10-13 06:54:49,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 06:54:49,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965909937] [2024-10-13 06:54:49,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 06:54:49,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 06:54:50,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 06:54:50,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 06:54:50,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 06:54:50,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965909937] [2024-10-13 06:54:50,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965909937] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 06:54:50,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 06:54:50,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 06:54:50,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507339944] [2024-10-13 06:54:50,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 06:54:50,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 06:54:50,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 06:54:50,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 06:54:50,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-13 06:54:50,274 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-10-13 06:54:50,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 50 transitions, 218 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 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) [2024-10-13 06:54:50,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 06:54:50,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-10-13 06:54:50,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 06:54:55,613 INFO L124 PetriNetUnfolderBase]: 32441/47132 cut-off events. [2024-10-13 06:54:55,613 INFO L125 PetriNetUnfolderBase]: For 72914/72981 co-relation queries the response was YES. [2024-10-13 06:54:55,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141864 conditions, 47132 events. 32441/47132 cut-off events. For 72914/72981 co-relation queries the response was YES. Maximal size of possible extension queue 1931. Compared 337671 event pairs, 5535 based on Foata normal form. 1330/48323 useless extension candidates. Maximal degree in co-relation 141846. Up to 15077 conditions per place. [2024-10-13 06:54:55,979 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 64 selfloop transitions, 9 changer transitions 106/190 dead transitions. [2024-10-13 06:54:55,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 190 transitions, 1250 flow [2024-10-13 06:54:55,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 06:54:55,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 06:54:55,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 311 transitions. [2024-10-13 06:54:55,984 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.622 [2024-10-13 06:54:55,985 INFO L175 Difference]: Start difference. First operand has 68 places, 50 transitions, 218 flow. Second operand 10 states and 311 transitions. [2024-10-13 06:54:55,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 190 transitions, 1250 flow [2024-10-13 06:54:56,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 190 transitions, 1092 flow, removed 39 selfloop flow, removed 4 redundant places. [2024-10-13 06:54:56,227 INFO L231 Difference]: Finished difference. Result has 75 places, 55 transitions, 284 flow [2024-10-13 06:54:56,228 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=284, PETRI_PLACES=75, PETRI_TRANSITIONS=55} [2024-10-13 06:54:56,229 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 17 predicate places. [2024-10-13 06:54:56,229 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 55 transitions, 284 flow [2024-10-13 06:54:56,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 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) [2024-10-13 06:54:56,230 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 06:54:56,230 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 06:54:56,230 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 06:54:56,230 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-13 06:54:56,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 06:54:56,231 INFO L85 PathProgramCache]: Analyzing trace with hash -2026058201, now seen corresponding path program 1 times [2024-10-13 06:54:56,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 06:54:56,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883400658] [2024-10-13 06:54:56,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 06:54:56,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 06:54:56,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 06:54:56,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 06:54:56,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 06:54:56,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883400658] [2024-10-13 06:54:56,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883400658] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 06:54:56,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 06:54:56,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 06:54:56,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841887998] [2024-10-13 06:54:56,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 06:54:56,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 06:54:56,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 06:54:56,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 06:54:56,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-13 06:54:56,442 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-10-13 06:54:56,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 55 transitions, 284 flow. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 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) [2024-10-13 06:54:56,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 06:54:56,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-10-13 06:54:56,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 06:55:01,276 INFO L124 PetriNetUnfolderBase]: 29136/42063 cut-off events. [2024-10-13 06:55:01,276 INFO L125 PetriNetUnfolderBase]: For 96527/96572 co-relation queries the response was YES. [2024-10-13 06:55:01,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134984 conditions, 42063 events. 29136/42063 cut-off events. For 96527/96572 co-relation queries the response was YES. Maximal size of possible extension queue 1673. Compared 294022 event pairs, 5777 based on Foata normal form. 905/42959 useless extension candidates. Maximal degree in co-relation 134959. Up to 18556 conditions per place. [2024-10-13 06:55:01,661 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 70 selfloop transitions, 20 changer transitions 88/189 dead transitions. [2024-10-13 06:55:01,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 189 transitions, 1290 flow [2024-10-13 06:55:01,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 06:55:01,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 06:55:01,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 312 transitions. [2024-10-13 06:55:01,664 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.624 [2024-10-13 06:55:01,664 INFO L175 Difference]: Start difference. First operand has 75 places, 55 transitions, 284 flow. Second operand 10 states and 312 transitions. [2024-10-13 06:55:01,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 189 transitions, 1290 flow [2024-10-13 06:55:02,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 189 transitions, 1243 flow, removed 21 selfloop flow, removed 3 redundant places. [2024-10-13 06:55:02,427 INFO L231 Difference]: Finished difference. Result has 84 places, 66 transitions, 482 flow [2024-10-13 06:55:02,427 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=482, PETRI_PLACES=84, PETRI_TRANSITIONS=66} [2024-10-13 06:55:02,428 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 26 predicate places. [2024-10-13 06:55:02,428 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 66 transitions, 482 flow [2024-10-13 06:55:02,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 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) [2024-10-13 06:55:02,428 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 06:55:02,428 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] [2024-10-13 06:55:02,429 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-13 06:55:02,429 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-13 06:55:02,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 06:55:02,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1093450022, now seen corresponding path program 1 times [2024-10-13 06:55:02,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 06:55:02,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349025732] [2024-10-13 06:55:02,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 06:55:02,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 06:55:02,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 06:55:02,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 06:55:02,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 06:55:02,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349025732] [2024-10-13 06:55:02,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349025732] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 06:55:02,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 06:55:02,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 06:55:02,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679686280] [2024-10-13 06:55:02,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 06:55:02,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 06:55:02,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 06:55:02,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 06:55:02,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-13 06:55:02,794 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-10-13 06:55:02,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 66 transitions, 482 flow. Second operand has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 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) [2024-10-13 06:55:02,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 06:55:02,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-10-13 06:55:02,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 06:55:07,737 INFO L124 PetriNetUnfolderBase]: 26725/38841 cut-off events. [2024-10-13 06:55:07,738 INFO L125 PetriNetUnfolderBase]: For 142410/142645 co-relation queries the response was YES. [2024-10-13 06:55:07,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137618 conditions, 38841 events. 26725/38841 cut-off events. For 142410/142645 co-relation queries the response was YES. Maximal size of possible extension queue 1495. Compared 273512 event pairs, 4209 based on Foata normal form. 853/39653 useless extension candidates. Maximal degree in co-relation 137585. Up to 13373 conditions per place. [2024-10-13 06:55:08,114 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 86 selfloop transitions, 13 changer transitions 90/200 dead transitions. [2024-10-13 06:55:08,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 200 transitions, 1624 flow [2024-10-13 06:55:08,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 06:55:08,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 06:55:08,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 307 transitions. [2024-10-13 06:55:08,117 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.614 [2024-10-13 06:55:08,117 INFO L175 Difference]: Start difference. First operand has 84 places, 66 transitions, 482 flow. Second operand 10 states and 307 transitions. [2024-10-13 06:55:08,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 200 transitions, 1624 flow [2024-10-13 06:55:08,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 200 transitions, 1550 flow, removed 37 selfloop flow, removed 4 redundant places. [2024-10-13 06:55:08,928 INFO L231 Difference]: Finished difference. Result has 92 places, 73 transitions, 607 flow [2024-10-13 06:55:08,928 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=440, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=607, PETRI_PLACES=92, PETRI_TRANSITIONS=73} [2024-10-13 06:55:08,929 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 34 predicate places. [2024-10-13 06:55:08,929 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 73 transitions, 607 flow [2024-10-13 06:55:08,930 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 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) [2024-10-13 06:55:08,930 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 06:55:08,930 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 06:55:08,930 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-13 06:55:08,930 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-13 06:55:08,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 06:55:08,931 INFO L85 PathProgramCache]: Analyzing trace with hash 2008754497, now seen corresponding path program 1 times [2024-10-13 06:55:08,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 06:55:08,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748241806] [2024-10-13 06:55:08,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 06:55:08,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 06:55:08,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 06:55:09,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 06:55:09,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 06:55:09,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748241806] [2024-10-13 06:55:09,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748241806] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 06:55:09,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 06:55:09,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 06:55:09,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550415080] [2024-10-13 06:55:09,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 06:55:09,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 06:55:09,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 06:55:09,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 06:55:09,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 06:55:09,094 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2024-10-13 06:55:09,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 73 transitions, 607 flow. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 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) [2024-10-13 06:55:09,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 06:55:09,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2024-10-13 06:55:09,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 06:55:14,990 INFO L124 PetriNetUnfolderBase]: 32685/49517 cut-off events. [2024-10-13 06:55:14,990 INFO L125 PetriNetUnfolderBase]: For 98479/110757 co-relation queries the response was YES. [2024-10-13 06:55:15,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133386 conditions, 49517 events. 32685/49517 cut-off events. For 98479/110757 co-relation queries the response was YES. Maximal size of possible extension queue 2262. Compared 384399 event pairs, 5609 based on Foata normal form. 2440/50025 useless extension candidates. Maximal degree in co-relation 133346. Up to 24505 conditions per place. [2024-10-13 06:55:15,683 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 62 selfloop transitions, 6 changer transitions 0/111 dead transitions. [2024-10-13 06:55:15,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 111 transitions, 921 flow [2024-10-13 06:55:15,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 06:55:15,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 06:55:15,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 141 transitions. [2024-10-13 06:55:15,685 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.705 [2024-10-13 06:55:15,685 INFO L175 Difference]: Start difference. First operand has 92 places, 73 transitions, 607 flow. Second operand 4 states and 141 transitions. [2024-10-13 06:55:15,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 111 transitions, 921 flow [2024-10-13 06:55:17,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 111 transitions, 883 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-10-13 06:55:17,293 INFO L231 Difference]: Finished difference. Result has 83 places, 78 transitions, 623 flow [2024-10-13 06:55:17,293 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=577, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=623, PETRI_PLACES=83, PETRI_TRANSITIONS=78} [2024-10-13 06:55:17,294 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 25 predicate places. [2024-10-13 06:55:17,294 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 78 transitions, 623 flow [2024-10-13 06:55:17,294 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 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) [2024-10-13 06:55:17,294 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 06:55:17,294 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 06:55:17,294 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-13 06:55:17,294 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-13 06:55:17,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 06:55:17,295 INFO L85 PathProgramCache]: Analyzing trace with hash -311997892, now seen corresponding path program 1 times [2024-10-13 06:55:17,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 06:55:17,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773116974] [2024-10-13 06:55:17,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 06:55:17,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 06:55:17,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 06:55:17,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 06:55:17,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 06:55:17,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773116974] [2024-10-13 06:55:17,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773116974] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 06:55:17,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 06:55:17,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 06:55:17,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250710906] [2024-10-13 06:55:17,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 06:55:17,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 06:55:17,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 06:55:17,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 06:55:17,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 06:55:17,540 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2024-10-13 06:55:17,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 78 transitions, 623 flow. Second operand has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 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) [2024-10-13 06:55:17,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 06:55:17,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2024-10-13 06:55:17,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 06:55:22,105 INFO L124 PetriNetUnfolderBase]: 26984/41048 cut-off events. [2024-10-13 06:55:22,106 INFO L125 PetriNetUnfolderBase]: For 55975/65161 co-relation queries the response was YES. [2024-10-13 06:55:22,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116077 conditions, 41048 events. 26984/41048 cut-off events. For 55975/65161 co-relation queries the response was YES. Maximal size of possible extension queue 1838. Compared 310123 event pairs, 3546 based on Foata normal form. 1990/41440 useless extension candidates. Maximal degree in co-relation 116041. Up to 13920 conditions per place. [2024-10-13 06:55:22,466 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 79 selfloop transitions, 10 changer transitions 0/132 dead transitions. [2024-10-13 06:55:22,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 132 transitions, 1054 flow [2024-10-13 06:55:22,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 06:55:22,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 06:55:22,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 181 transitions. [2024-10-13 06:55:22,467 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.724 [2024-10-13 06:55:22,467 INFO L175 Difference]: Start difference. First operand has 83 places, 78 transitions, 623 flow. Second operand 5 states and 181 transitions. [2024-10-13 06:55:22,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 132 transitions, 1054 flow [2024-10-13 06:55:22,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 132 transitions, 1023 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-10-13 06:55:22,501 INFO L231 Difference]: Finished difference. Result has 83 places, 83 transitions, 672 flow [2024-10-13 06:55:22,501 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=605, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=672, PETRI_PLACES=83, PETRI_TRANSITIONS=83} [2024-10-13 06:55:22,502 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 25 predicate places. [2024-10-13 06:55:22,502 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 83 transitions, 672 flow [2024-10-13 06:55:22,502 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 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) [2024-10-13 06:55:22,502 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 06:55:22,502 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] [2024-10-13 06:55:22,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-13 06:55:22,503 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-13 06:55:22,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 06:55:22,503 INFO L85 PathProgramCache]: Analyzing trace with hash 456045574, now seen corresponding path program 1 times [2024-10-13 06:55:22,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 06:55:22,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80110464] [2024-10-13 06:55:22,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 06:55:22,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 06:55:22,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 06:55:22,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 06:55:22,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 06:55:22,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80110464] [2024-10-13 06:55:22,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80110464] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 06:55:22,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 06:55:22,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 06:55:22,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492135733] [2024-10-13 06:55:22,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 06:55:22,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 06:55:22,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 06:55:22,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 06:55:22,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-13 06:55:22,857 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2024-10-13 06:55:22,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 83 transitions, 672 flow. Second operand has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 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) [2024-10-13 06:55:22,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 06:55:22,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2024-10-13 06:55:22,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand