./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/mix007.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44f7a311-9627-40a8-80f9-28090b8826fe/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44f7a311-9627-40a8-80f9-28090b8826fe/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44f7a311-9627-40a8-80f9-28090b8826fe/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44f7a311-9627-40a8-80f9-28090b8826fe/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix007.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44f7a311-9627-40a8-80f9-28090b8826fe/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44f7a311-9627-40a8-80f9-28090b8826fe/bin/uautomizer-verify-4GaUIPS5ZU --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 87b62b2cd45c104fec3a3f6f97bb4a2e98408c552f26c7f9920866b9b8c9b373 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:12:28,320 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:12:28,414 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44f7a311-9627-40a8-80f9-28090b8826fe/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-31 22:12:28,422 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:12:28,423 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:12:28,461 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:12:28,462 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:12:28,462 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:12:28,463 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:12:28,463 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:12:28,464 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:12:28,464 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:12:28,465 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:12:28,465 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:12:28,466 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:12:28,466 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:12:28,467 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:12:28,467 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:12:28,468 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:12:28,468 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:12:28,468 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:12:28,469 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:12:28,469 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:12:28,470 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:12:28,470 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:12:28,471 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:12:28,471 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:12:28,471 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:12:28,472 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:12:28,472 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:12:28,472 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:12:28,473 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:12:28,473 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:12:28,473 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:12:28,474 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:12:28,474 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:12:28,475 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:12:28,475 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:12:28,475 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:12:28,476 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:12:28,476 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:12:28,477 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:12:28,478 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44f7a311-9627-40a8-80f9-28090b8826fe/bin/uautomizer-verify-4GaUIPS5ZU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44f7a311-9627-40a8-80f9-28090b8826fe/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 87b62b2cd45c104fec3a3f6f97bb4a2e98408c552f26c7f9920866b9b8c9b373 [2024-10-31 22:12:29,002 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:12:29,034 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:12:29,037 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:12:29,038 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:12:29,039 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:12:29,041 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44f7a311-9627-40a8-80f9-28090b8826fe/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/pthread-wmm/mix007.oepc.i Unable to find full path for "g++" [2024-10-31 22:12:31,097 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:12:31,389 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:12:31,389 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44f7a311-9627-40a8-80f9-28090b8826fe/sv-benchmarks/c/pthread-wmm/mix007.oepc.i [2024-10-31 22:12:31,413 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44f7a311-9627-40a8-80f9-28090b8826fe/bin/uautomizer-verify-4GaUIPS5ZU/data/2e7f843e3/31d12209d69d4db194bc00fb078a5db3/FLAG414a059b3 [2024-10-31 22:12:31,704 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44f7a311-9627-40a8-80f9-28090b8826fe/bin/uautomizer-verify-4GaUIPS5ZU/data/2e7f843e3/31d12209d69d4db194bc00fb078a5db3 [2024-10-31 22:12:31,706 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:12:31,708 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:12:31,709 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:12:31,709 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:12:31,715 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:12:31,716 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:12:31" (1/1) ... [2024-10-31 22:12:31,717 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5770b924 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:31, skipping insertion in model container [2024-10-31 22:12:31,717 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:12:31" (1/1) ... [2024-10-31 22:12:31,779 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:12:32,013 WARN L251 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44f7a311-9627-40a8-80f9-28090b8826fe/sv-benchmarks/c/pthread-wmm/mix007.oepc.i[945,958] [2024-10-31 22:12:32,302 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:12:32,322 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:12:32,337 WARN L251 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44f7a311-9627-40a8-80f9-28090b8826fe/sv-benchmarks/c/pthread-wmm/mix007.oepc.i[945,958] [2024-10-31 22:12:32,423 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:12:32,476 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:12:32,477 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:32 WrapperNode [2024-10-31 22:12:32,477 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:12:32,479 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:12:32,479 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:12:32,480 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:12:32,488 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:32" (1/1) ... [2024-10-31 22:12:32,510 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:32" (1/1) ... [2024-10-31 22:12:32,554 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 129 [2024-10-31 22:12:32,554 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:12:32,555 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:12:32,555 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:12:32,555 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:12:32,569 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:32" (1/1) ... [2024-10-31 22:12:32,569 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:32" (1/1) ... [2024-10-31 22:12:32,572 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:32" (1/1) ... [2024-10-31 22:12:32,604 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]. [2024-10-31 22:12:32,605 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:32" (1/1) ... [2024-10-31 22:12:32,605 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:32" (1/1) ... [2024-10-31 22:12:32,618 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:32" (1/1) ... [2024-10-31 22:12:32,623 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:32" (1/1) ... [2024-10-31 22:12:32,627 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:32" (1/1) ... [2024-10-31 22:12:32,629 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:32" (1/1) ... [2024-10-31 22:12:32,636 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:12:32,636 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:12:32,637 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:12:32,641 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:12:32,642 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:32" (1/1) ... [2024-10-31 22:12:32,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:12:32,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44f7a311-9627-40a8-80f9-28090b8826fe/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:12:32,676 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44f7a311-9627-40a8-80f9-28090b8826fe/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:12:32,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44f7a311-9627-40a8-80f9-28090b8826fe/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:12:32,716 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-31 22:12:32,716 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:12:32,717 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-10-31 22:12:32,717 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-10-31 22:12:32,717 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-10-31 22:12:32,717 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-10-31 22:12:32,717 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-10-31 22:12:32,717 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-10-31 22:12:32,718 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-10-31 22:12:32,718 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-10-31 22:12:32,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:12:32,718 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-31 22:12:32,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:12:32,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:12:32,724 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-31 22:12:32,901 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:12:32,903 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:12:33,339 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-31 22:12:33,340 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:12:33,616 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:12:33,616 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-31 22:12:33,617 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:12:33 BoogieIcfgContainer [2024-10-31 22:12:33,617 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:12:33,622 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:12:33,622 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:12:33,627 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:12:33,627 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:12:31" (1/3) ... [2024-10-31 22:12:33,628 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@847b303 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:12:33, skipping insertion in model container [2024-10-31 22:12:33,630 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:32" (2/3) ... [2024-10-31 22:12:33,631 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@847b303 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:12:33, skipping insertion in model container [2024-10-31 22:12:33,631 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:12:33" (3/3) ... [2024-10-31 22:12:33,633 INFO L112 eAbstractionObserver]: Analyzing ICFG mix007.oepc.i [2024-10-31 22:12:33,651 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:12:33,651 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-31 22:12:33,651 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-31 22:12:33,723 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-31 22:12:33,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 50 transitions, 116 flow [2024-10-31 22:12:33,798 INFO L124 PetriNetUnfolderBase]: 1/46 cut-off events. [2024-10-31 22:12:33,798 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:12:33,802 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. [2024-10-31 22:12:33,803 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 50 transitions, 116 flow [2024-10-31 22:12:33,807 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 46 transitions, 104 flow [2024-10-31 22:12:33,823 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:12:33,833 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;@c0ab61d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:12:33,834 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-10-31 22:12:33,838 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:12:33,839 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-10-31 22:12:33,839 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:12:33,839 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:12:33,840 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-10-31 22:12:33,841 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-31 22:12:33,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:12:33,846 INFO L85 PathProgramCache]: Analyzing trace with hash 12086229, now seen corresponding path program 1 times [2024-10-31 22:12:33,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:12:33,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538778289] [2024-10-31 22:12:33,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:12:33,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:12:34,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:34,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:12:34,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:12:34,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538778289] [2024-10-31 22:12:34,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538778289] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:12:34,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:12:34,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-31 22:12:34,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820011205] [2024-10-31 22:12:34,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:12:34,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:12:34,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:12:34,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:12:34,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:12:34,517 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 50 [2024-10-31 22:12:34,521 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) [2024-10-31 22:12:34,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:12:34,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 50 [2024-10-31 22:12:34,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:12:35,768 INFO L124 PetriNetUnfolderBase]: 2495/3960 cut-off events. [2024-10-31 22:12:35,769 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2024-10-31 22:12:35,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7536 conditions, 3960 events. 2495/3960 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 24823 event pairs, 1647 based on Foata normal form. 135/4029 useless extension candidates. Maximal degree in co-relation 7524. Up to 2779 conditions per place. [2024-10-31 22:12:35,812 INFO L140 encePairwiseOnDemand]: 46/50 looper letters, 37 selfloop transitions, 2 changer transitions 2/62 dead transitions. [2024-10-31 22:12:35,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 62 transitions, 227 flow [2024-10-31 22:12:35,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:12:35,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:12:35,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 119 transitions. [2024-10-31 22:12:35,827 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7933333333333333 [2024-10-31 22:12:35,829 INFO L175 Difference]: Start difference. First operand has 58 places, 46 transitions, 104 flow. Second operand 3 states and 119 transitions. [2024-10-31 22:12:35,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 62 transitions, 227 flow [2024-10-31 22:12:35,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 62 transitions, 220 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-31 22:12:35,841 INFO L231 Difference]: Finished difference. Result has 55 places, 43 transitions, 98 flow [2024-10-31 22:12:35,845 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} [2024-10-31 22:12:35,850 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, -3 predicate places. [2024-10-31 22:12:35,850 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 43 transitions, 98 flow [2024-10-31 22:12:35,851 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) [2024-10-31 22:12:35,851 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:12:35,852 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:12:35,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:12:35,852 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)] === [2024-10-31 22:12:35,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:12:35,854 INFO L85 PathProgramCache]: Analyzing trace with hash -796879043, now seen corresponding path program 1 times [2024-10-31 22:12:35,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:12:35,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687741160] [2024-10-31 22:12:35,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:12:35,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:12:35,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:36,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:12:36,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:12:36,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687741160] [2024-10-31 22:12:36,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687741160] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:12:36,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:12:36,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:12:36,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829441756] [2024-10-31 22:12:36,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:12:36,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:12:36,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:12:36,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:12:36,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:12:36,412 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2024-10-31 22:12:36,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 43 transitions, 98 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) [2024-10-31 22:12:36,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:12:36,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2024-10-31 22:12:36,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:12:39,044 INFO L124 PetriNetUnfolderBase]: 7779/12173 cut-off events. [2024-10-31 22:12:39,044 INFO L125 PetriNetUnfolderBase]: For 554/554 co-relation queries the response was YES. [2024-10-31 22:12:39,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23589 conditions, 12173 events. 7779/12173 cut-off events. For 554/554 co-relation queries the response was YES. Maximal size of possible extension queue 718. Compared 87749 event pairs, 1033 based on Foata normal form. 400/12008 useless extension candidates. Maximal degree in co-relation 23579. Up to 5841 conditions per place. [2024-10-31 22:12:39,150 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 52 selfloop transitions, 6 changer transitions 1/75 dead transitions. [2024-10-31 22:12:39,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 75 transitions, 290 flow [2024-10-31 22:12:39,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:12:39,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:12:39,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 141 transitions. [2024-10-31 22:12:39,154 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.705 [2024-10-31 22:12:39,155 INFO L175 Difference]: Start difference. First operand has 55 places, 43 transitions, 98 flow. Second operand 4 states and 141 transitions. [2024-10-31 22:12:39,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 75 transitions, 290 flow [2024-10-31 22:12:39,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 75 transitions, 282 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:12:39,158 INFO L231 Difference]: Finished difference. Result has 57 places, 47 transitions, 136 flow [2024-10-31 22:12:39,159 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=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=136, PETRI_PLACES=57, PETRI_TRANSITIONS=47} [2024-10-31 22:12:39,159 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, -1 predicate places. [2024-10-31 22:12:39,160 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 47 transitions, 136 flow [2024-10-31 22:12:39,160 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) [2024-10-31 22:12:39,160 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:12:39,162 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] [2024-10-31 22:12:39,162 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:12:39,162 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)] === [2024-10-31 22:12:39,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:12:39,165 INFO L85 PathProgramCache]: Analyzing trace with hash 340330195, now seen corresponding path program 1 times [2024-10-31 22:12:39,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:12:39,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392326344] [2024-10-31 22:12:39,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:12:39,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:12:39,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:39,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:12:39,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:12:39,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392326344] [2024-10-31 22:12:39,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392326344] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:12:39,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:12:39,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:12:39,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826464243] [2024-10-31 22:12:39,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:12:39,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:12:39,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:12:39,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:12:39,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:12:39,753 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2024-10-31 22:12:39,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 47 transitions, 136 flow. Second operand has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 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) [2024-10-31 22:12:39,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:12:39,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2024-10-31 22:12:39,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:12:42,329 INFO L124 PetriNetUnfolderBase]: 6075/9473 cut-off events. [2024-10-31 22:12:42,329 INFO L125 PetriNetUnfolderBase]: For 2276/2276 co-relation queries the response was YES. [2024-10-31 22:12:42,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21257 conditions, 9473 events. 6075/9473 cut-off events. For 2276/2276 co-relation queries the response was YES. Maximal size of possible extension queue 540. Compared 64043 event pairs, 451 based on Foata normal form. 364/9422 useless extension candidates. Maximal degree in co-relation 21245. Up to 3681 conditions per place. [2024-10-31 22:12:42,403 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 67 selfloop transitions, 10 changer transitions 1/94 dead transitions. [2024-10-31 22:12:42,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 94 transitions, 415 flow [2024-10-31 22:12:42,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:12:42,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-31 22:12:42,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 180 transitions. [2024-10-31 22:12:42,407 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.72 [2024-10-31 22:12:42,409 INFO L175 Difference]: Start difference. First operand has 57 places, 47 transitions, 136 flow. Second operand 5 states and 180 transitions. [2024-10-31 22:12:42,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 94 transitions, 415 flow [2024-10-31 22:12:42,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 94 transitions, 404 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-10-31 22:12:42,419 INFO L231 Difference]: Finished difference. Result has 61 places, 51 transitions, 188 flow [2024-10-31 22:12:42,419 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=188, PETRI_PLACES=61, PETRI_TRANSITIONS=51} [2024-10-31 22:12:42,420 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 3 predicate places. [2024-10-31 22:12:42,421 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 51 transitions, 188 flow [2024-10-31 22:12:42,422 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 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) [2024-10-31 22:12:42,422 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:12:42,422 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] [2024-10-31 22:12:42,422 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 22:12:42,423 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)] === [2024-10-31 22:12:42,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:12:42,424 INFO L85 PathProgramCache]: Analyzing trace with hash -151834436, now seen corresponding path program 1 times [2024-10-31 22:12:42,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:12:42,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8685491] [2024-10-31 22:12:42,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:12:42,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:12:42,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:42,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:12:42,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:12:42,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8685491] [2024-10-31 22:12:42,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8685491] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:12:42,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:12:42,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:12:42,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984537497] [2024-10-31 22:12:42,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:12:42,887 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:12:42,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:12:42,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:12:42,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:12:42,896 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2024-10-31 22:12:42,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 51 transitions, 188 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) [2024-10-31 22:12:42,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:12:42,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2024-10-31 22:12:42,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:12:44,131 INFO L124 PetriNetUnfolderBase]: 4027/6121 cut-off events. [2024-10-31 22:12:44,132 INFO L125 PetriNetUnfolderBase]: For 4654/4654 co-relation queries the response was YES. [2024-10-31 22:12:44,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15571 conditions, 6121 events. 4027/6121 cut-off events. For 4654/4654 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 35792 event pairs, 289 based on Foata normal form. 244/6115 useless extension candidates. Maximal degree in co-relation 15557. Up to 1788 conditions per place. [2024-10-31 22:12:44,184 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 80 selfloop transitions, 14 changer transitions 1/111 dead transitions. [2024-10-31 22:12:44,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 111 transitions, 546 flow [2024-10-31 22:12:44,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:12:44,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:12:44,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 217 transitions. [2024-10-31 22:12:44,187 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7233333333333334 [2024-10-31 22:12:44,187 INFO L175 Difference]: Start difference. First operand has 61 places, 51 transitions, 188 flow. Second operand 6 states and 217 transitions. [2024-10-31 22:12:44,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 111 transitions, 546 flow [2024-10-31 22:12:44,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 111 transitions, 516 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-10-31 22:12:44,225 INFO L231 Difference]: Finished difference. Result has 64 places, 55 transitions, 238 flow [2024-10-31 22:12:44,225 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=238, PETRI_PLACES=64, PETRI_TRANSITIONS=55} [2024-10-31 22:12:44,226 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 6 predicate places. [2024-10-31 22:12:44,227 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 55 transitions, 238 flow [2024-10-31 22:12:44,228 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2024-10-31 22:12:44,228 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:12:44,228 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] [2024-10-31 22:12:44,228 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 22:12:44,229 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)] === [2024-10-31 22:12:44,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:12:44,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1701752763, now seen corresponding path program 1 times [2024-10-31 22:12:44,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:12:44,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849065648] [2024-10-31 22:12:44,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:12:44,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:12:44,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:44,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:12:44,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:12:44,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849065648] [2024-10-31 22:12:44,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849065648] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:12:44,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:12:44,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-31 22:12:44,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714821723] [2024-10-31 22:12:44,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:12:44,703 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-31 22:12:44,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:12:44,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-31 22:12:44,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:12:44,715 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2024-10-31 22:12:44,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 55 transitions, 238 flow. Second operand has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 7 states have internal predecessors, (160), 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) [2024-10-31 22:12:44,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:12:44,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2024-10-31 22:12:44,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:12:45,987 INFO L124 PetriNetUnfolderBase]: 2863/4169 cut-off events. [2024-10-31 22:12:45,987 INFO L125 PetriNetUnfolderBase]: For 4826/4826 co-relation queries the response was YES. [2024-10-31 22:12:46,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11596 conditions, 4169 events. 2863/4169 cut-off events. For 4826/4826 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 21749 event pairs, 231 based on Foata normal form. 96/4095 useless extension candidates. Maximal degree in co-relation 11581. Up to 1316 conditions per place. [2024-10-31 22:12:46,035 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 71 selfloop transitions, 18 changer transitions 1/106 dead transitions. [2024-10-31 22:12:46,036 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 106 transitions, 536 flow [2024-10-31 22:12:46,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-31 22:12:46,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-31 22:12:46,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 232 transitions. [2024-10-31 22:12:46,039 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6628571428571428 [2024-10-31 22:12:46,039 INFO L175 Difference]: Start difference. First operand has 64 places, 55 transitions, 238 flow. Second operand 7 states and 232 transitions. [2024-10-31 22:12:46,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 106 transitions, 536 flow [2024-10-31 22:12:46,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 106 transitions, 490 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-10-31 22:12:46,096 INFO L231 Difference]: Finished difference. Result has 67 places, 55 transitions, 248 flow [2024-10-31 22:12:46,097 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=248, PETRI_PLACES=67, PETRI_TRANSITIONS=55} [2024-10-31 22:12:46,097 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 9 predicate places. [2024-10-31 22:12:46,098 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 55 transitions, 248 flow [2024-10-31 22:12:46,098 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 7 states have internal predecessors, (160), 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) [2024-10-31 22:12:46,099 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:12:46,099 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] [2024-10-31 22:12:46,099 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-31 22:12:46,100 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)] === [2024-10-31 22:12:46,101 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:12:46,101 INFO L85 PathProgramCache]: Analyzing trace with hash -1981938358, now seen corresponding path program 1 times [2024-10-31 22:12:46,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:12:46,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536781848] [2024-10-31 22:12:46,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:12:46,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:12:46,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:49,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:12:49,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:12:49,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536781848] [2024-10-31 22:12:49,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536781848] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:12:49,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:12:49,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-31 22:12:49,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381429985] [2024-10-31 22:12:49,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:12:49,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-31 22:12:49,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:12:49,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-31 22:12:49,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-10-31 22:12:49,316 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 50 [2024-10-31 22:12:49,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 55 transitions, 248 flow. Second operand has 10 states, 10 states have (on average 19.6) internal successors, (196), 10 states have internal predecessors, (196), 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) [2024-10-31 22:12:49,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:12:49,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 50 [2024-10-31 22:12:49,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:12:52,455 INFO L124 PetriNetUnfolderBase]: 9167/13880 cut-off events. [2024-10-31 22:12:52,455 INFO L125 PetriNetUnfolderBase]: For 5362/5506 co-relation queries the response was YES. [2024-10-31 22:12:52,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32413 conditions, 13880 events. 9167/13880 cut-off events. For 5362/5506 co-relation queries the response was YES. Maximal size of possible extension queue 629. Compared 90618 event pairs, 1053 based on Foata normal form. 16/13452 useless extension candidates. Maximal degree in co-relation 32397. Up to 3229 conditions per place. [2024-10-31 22:12:52,584 INFO L140 encePairwiseOnDemand]: 36/50 looper letters, 99 selfloop transitions, 25 changer transitions 13/162 dead transitions. [2024-10-31 22:12:52,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 162 transitions, 770 flow [2024-10-31 22:12:52,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-31 22:12:52,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-31 22:12:52,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 308 transitions. [2024-10-31 22:12:52,587 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.616 [2024-10-31 22:12:52,587 INFO L175 Difference]: Start difference. First operand has 67 places, 55 transitions, 248 flow. Second operand 10 states and 308 transitions. [2024-10-31 22:12:52,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 162 transitions, 770 flow [2024-10-31 22:12:52,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 162 transitions, 664 flow, removed 22 selfloop flow, removed 10 redundant places. [2024-10-31 22:12:52,880 INFO L231 Difference]: Finished difference. Result has 74 places, 76 transitions, 337 flow [2024-10-31 22:12:52,880 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=337, PETRI_PLACES=74, PETRI_TRANSITIONS=76} [2024-10-31 22:12:52,881 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 16 predicate places. [2024-10-31 22:12:52,882 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 76 transitions, 337 flow [2024-10-31 22:12:52,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 19.6) internal successors, (196), 10 states have internal predecessors, (196), 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) [2024-10-31 22:12:52,882 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:12:52,882 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] [2024-10-31 22:12:52,883 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-31 22:12:52,883 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)] === [2024-10-31 22:12:52,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:12:52,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1868082498, now seen corresponding path program 2 times [2024-10-31 22:12:52,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:12:52,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933332051] [2024-10-31 22:12:52,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:12:52,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:12:53,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:53,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:12:53,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:12:53,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933332051] [2024-10-31 22:12:53,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933332051] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:12:53,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:12:53,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-31 22:12:53,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017677303] [2024-10-31 22:12:53,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:12:53,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-31 22:12:53,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:12:53,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-31 22:12:53,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:12:53,506 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-10-31 22:12:53,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 76 transitions, 337 flow. Second operand has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 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) [2024-10-31 22:12:53,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:12:53,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-10-31 22:12:53,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:12:57,096 INFO L124 PetriNetUnfolderBase]: 15144/22828 cut-off events. [2024-10-31 22:12:57,096 INFO L125 PetriNetUnfolderBase]: For 16724/16733 co-relation queries the response was YES. [2024-10-31 22:12:57,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61098 conditions, 22828 events. 15144/22828 cut-off events. For 16724/16733 co-relation queries the response was YES. Maximal size of possible extension queue 1149. Compared 158104 event pairs, 1865 based on Foata normal form. 22/21854 useless extension candidates. Maximal degree in co-relation 61079. Up to 7516 conditions per place. [2024-10-31 22:12:57,274 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 59 selfloop transitions, 19 changer transitions 67/169 dead transitions. [2024-10-31 22:12:57,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 169 transitions, 1021 flow [2024-10-31 22:12:57,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-31 22:12:57,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-31 22:12:57,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 237 transitions. [2024-10-31 22:12:57,277 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5925 [2024-10-31 22:12:57,277 INFO L175 Difference]: Start difference. First operand has 74 places, 76 transitions, 337 flow. Second operand 8 states and 237 transitions. [2024-10-31 22:12:57,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 169 transitions, 1021 flow [2024-10-31 22:12:57,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 169 transitions, 1010 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-10-31 22:12:57,297 INFO L231 Difference]: Finished difference. Result has 81 places, 74 transitions, 380 flow [2024-10-31 22:12:57,297 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=380, PETRI_PLACES=81, PETRI_TRANSITIONS=74} [2024-10-31 22:12:57,298 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 23 predicate places. [2024-10-31 22:12:57,298 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 74 transitions, 380 flow [2024-10-31 22:12:57,299 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 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) [2024-10-31 22:12:57,299 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:12:57,299 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] [2024-10-31 22:12:57,300 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-31 22:12:57,300 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)] === [2024-10-31 22:12:57,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:12:57,301 INFO L85 PathProgramCache]: Analyzing trace with hash 878917656, now seen corresponding path program 3 times [2024-10-31 22:12:57,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:12:57,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239063441] [2024-10-31 22:12:57,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:12:57,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:12:57,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat