./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-word-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-word-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB --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 bf81f7b3bd1ceac2bf46c7c37f69effc0af9de17b18c7565156301fb49a6164e --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 05:03:58,901 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 05:03:58,976 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 05:03:58,981 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 05:03:58,982 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 05:03:59,004 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 05:03:59,005 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 05:03:59,005 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 05:03:59,006 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 05:03:59,006 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 05:03:59,006 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 05:03:59,006 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 05:03:59,007 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 05:03:59,007 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 05:03:59,007 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 05:03:59,007 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 05:03:59,007 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 05:03:59,007 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 05:03:59,008 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 05:03:59,008 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 05:03:59,008 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 05:03:59,008 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 05:03:59,008 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 05:03:59,008 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 05:03:59,008 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 05:03:59,008 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 05:03:59,008 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 05:03:59,009 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 05:03:59,009 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 05:03:59,009 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:03:59,009 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:03:59,009 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:03:59,009 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:03:59,009 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 05:03:59,009 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:03:59,009 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:03:59,009 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:03:59,009 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:03:59,010 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 05:03:59,010 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 05:03:59,010 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 05:03:59,010 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 05:03:59,010 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 05:03:59,010 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 05:03:59,010 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 05:03:59,010 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 05:03:59,011 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 05:03:59,011 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 05:03:59,011 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB 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 -> bf81f7b3bd1ceac2bf46c7c37f69effc0af9de17b18c7565156301fb49a6164e [2024-11-28 05:03:59,293 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 05:03:59,305 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 05:03:59,308 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 05:03:59,310 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 05:03:59,310 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 05:03:59,313 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/weaver/chl-word-symm.wvr.c [2024-11-28 05:04:02,294 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/data/9108eaecc/608cd15746ed444b86057239c51b820f/FLAG6a14bd1f0 [2024-11-28 05:04:02,526 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 05:04:02,526 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/sv-benchmarks/c/weaver/chl-word-symm.wvr.c [2024-11-28 05:04:02,534 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/data/9108eaecc/608cd15746ed444b86057239c51b820f/FLAG6a14bd1f0 [2024-11-28 05:04:02,549 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/data/9108eaecc/608cd15746ed444b86057239c51b820f [2024-11-28 05:04:02,551 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 05:04:02,552 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 05:04:02,554 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 05:04:02,554 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 05:04:02,559 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 05:04:02,560 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:04:02" (1/1) ... [2024-11-28 05:04:02,563 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@185ee01f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:02, skipping insertion in model container [2024-11-28 05:04:02,563 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:04:02" (1/1) ... [2024-11-28 05:04:02,583 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 05:04:02,816 WARN L250 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_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/sv-benchmarks/c/weaver/chl-word-symm.wvr.c[2874,2887] [2024-11-28 05:04:02,830 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:04:02,842 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 05:04:02,878 WARN L250 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_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/sv-benchmarks/c/weaver/chl-word-symm.wvr.c[2874,2887] [2024-11-28 05:04:02,881 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:04:02,903 INFO L204 MainTranslator]: Completed translation [2024-11-28 05:04:02,903 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:02 WrapperNode [2024-11-28 05:04:02,903 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 05:04:02,904 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 05:04:02,905 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 05:04:02,905 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 05:04:02,915 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:02" (1/1) ... [2024-11-28 05:04:02,928 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:02" (1/1) ... [2024-11-28 05:04:02,952 INFO L138 Inliner]: procedures = 23, calls = 25, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 121 [2024-11-28 05:04:02,952 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 05:04:02,956 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 05:04:02,956 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 05:04:02,956 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 05:04:02,966 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:02" (1/1) ... [2024-11-28 05:04:02,966 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:02" (1/1) ... [2024-11-28 05:04:02,971 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:02" (1/1) ... [2024-11-28 05:04:02,995 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-11-28 05:04:02,995 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:02" (1/1) ... [2024-11-28 05:04:02,995 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:02" (1/1) ... [2024-11-28 05:04:03,002 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:02" (1/1) ... [2024-11-28 05:04:03,003 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:02" (1/1) ... [2024-11-28 05:04:03,007 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:02" (1/1) ... [2024-11-28 05:04:03,008 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:02" (1/1) ... [2024-11-28 05:04:03,010 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:02" (1/1) ... [2024-11-28 05:04:03,012 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 05:04:03,013 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 05:04:03,013 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 05:04:03,013 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 05:04:03,014 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:02" (1/1) ... [2024-11-28 05:04:03,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:04:03,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:04:03,046 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 05:04:03,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 05:04:03,072 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 05:04:03,072 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-28 05:04:03,072 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-28 05:04:03,072 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-28 05:04:03,072 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-28 05:04:03,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 05:04:03,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 05:04:03,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 05:04:03,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 05:04:03,072 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 05:04:03,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 05:04:03,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 05:04:03,073 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 05:04:03,073 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 05:04:03,074 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-28 05:04:03,173 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 05:04:03,175 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 05:04:03,593 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 05:04:03,594 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 05:04:03,948 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 05:04:03,948 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-28 05:04:03,949 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:04:03 BoogieIcfgContainer [2024-11-28 05:04:03,949 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 05:04:03,952 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 05:04:03,952 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 05:04:03,957 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 05:04:03,957 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 05:04:02" (1/3) ... [2024-11-28 05:04:03,957 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31ada485 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:04:03, skipping insertion in model container [2024-11-28 05:04:03,958 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:02" (2/3) ... [2024-11-28 05:04:03,958 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31ada485 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:04:03, skipping insertion in model container [2024-11-28 05:04:03,958 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:04:03" (3/3) ... [2024-11-28 05:04:03,959 INFO L128 eAbstractionObserver]: Analyzing ICFG chl-word-symm.wvr.c [2024-11-28 05:04:03,974 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 05:04:03,980 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG chl-word-symm.wvr.c that has 3 procedures, 27 locations, 1 initial locations, 4 loop locations, and 1 error locations. [2024-11-28 05:04:03,980 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 05:04:04,049 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-28 05:04:04,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 33 places, 34 transitions, 82 flow [2024-11-28 05:04:04,141 INFO L124 PetriNetUnfolderBase]: 8/32 cut-off events. [2024-11-28 05:04:04,143 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-28 05:04:04,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 32 events. 8/32 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 44 event pairs, 0 based on Foata normal form. 0/23 useless extension candidates. Maximal degree in co-relation 23. Up to 2 conditions per place. [2024-11-28 05:04:04,149 INFO L82 GeneralOperation]: Start removeDead. Operand has 33 places, 34 transitions, 82 flow [2024-11-28 05:04:04,153 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 31 transitions, 74 flow [2024-11-28 05:04:04,166 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 05:04:04,181 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;@258326, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 05:04:04,181 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-28 05:04:04,200 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 05:04:04,201 INFO L124 PetriNetUnfolderBase]: 8/30 cut-off events. [2024-11-28 05:04:04,201 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-28 05:04:04,201 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:04:04,202 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:04:04,202 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 05:04:04,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:04:04,207 INFO L85 PathProgramCache]: Analyzing trace with hash -5662594, now seen corresponding path program 1 times [2024-11-28 05:04:04,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:04:04,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531540683] [2024-11-28 05:04:04,216 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:04:04,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:04:04,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:04:05,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:04:05,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:04:05,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531540683] [2024-11-28 05:04:05,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531540683] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:04:05,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:04:05,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 05:04:05,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440412923] [2024-11-28 05:04:05,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:04:05,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:04:05,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:04:05,040 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:04:05,040 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:04:05,042 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-28 05:04:05,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 31 transitions, 74 flow. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:04:05,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:04:05,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-28 05:04:05,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:04:05,321 INFO L124 PetriNetUnfolderBase]: 271/440 cut-off events. [2024-11-28 05:04:05,321 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2024-11-28 05:04:05,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 912 conditions, 440 events. 271/440 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1480 event pairs, 138 based on Foata normal form. 1/338 useless extension candidates. Maximal degree in co-relation 824. Up to 343 conditions per place. [2024-11-28 05:04:05,333 INFO L140 encePairwiseOnDemand]: 30/34 looper letters, 40 selfloop transitions, 1 changer transitions 7/49 dead transitions. [2024-11-28 05:04:05,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 49 transitions, 218 flow [2024-11-28 05:04:05,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:04:05,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 05:04:05,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 62 transitions. [2024-11-28 05:04:05,348 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45588235294117646 [2024-11-28 05:04:05,350 INFO L175 Difference]: Start difference. First operand has 30 places, 31 transitions, 74 flow. Second operand 4 states and 62 transitions. [2024-11-28 05:04:05,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 49 transitions, 218 flow [2024-11-28 05:04:05,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 49 transitions, 202 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-28 05:04:05,358 INFO L231 Difference]: Finished difference. Result has 31 places, 31 transitions, 75 flow [2024-11-28 05:04:05,361 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=75, PETRI_PLACES=31, PETRI_TRANSITIONS=31} [2024-11-28 05:04:05,364 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2024-11-28 05:04:05,365 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 31 transitions, 75 flow [2024-11-28 05:04:05,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:04:05,365 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:04:05,365 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:04:05,366 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 05:04:05,366 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 05:04:05,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:04:05,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1788796340, now seen corresponding path program 2 times [2024-11-28 05:04:05,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:04:05,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441878514] [2024-11-28 05:04:05,367 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:04:05,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:04:05,390 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 05:04:05,391 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:04:05,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:04:05,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:04:05,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441878514] [2024-11-28 05:04:05,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441878514] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:04:05,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:04:05,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 05:04:05,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961642116] [2024-11-28 05:04:05,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:04:05,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:04:05,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:04:05,718 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:04:05,718 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:04:05,718 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-28 05:04:05,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 31 transitions, 75 flow. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:04:05,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:04:05,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-28 05:04:05,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:04:05,999 INFO L124 PetriNetUnfolderBase]: 309/520 cut-off events. [2024-11-28 05:04:06,000 INFO L125 PetriNetUnfolderBase]: For 62/62 co-relation queries the response was YES. [2024-11-28 05:04:06,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1107 conditions, 520 events. 309/520 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1939 event pairs, 174 based on Foata normal form. 6/428 useless extension candidates. Maximal degree in co-relation 1090. Up to 403 conditions per place. [2024-11-28 05:04:06,009 INFO L140 encePairwiseOnDemand]: 30/34 looper letters, 40 selfloop transitions, 1 changer transitions 9/51 dead transitions. [2024-11-28 05:04:06,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 51 transitions, 225 flow [2024-11-28 05:04:06,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:04:06,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 05:04:06,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 64 transitions. [2024-11-28 05:04:06,013 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47058823529411764 [2024-11-28 05:04:06,013 INFO L175 Difference]: Start difference. First operand has 31 places, 31 transitions, 75 flow. Second operand 4 states and 64 transitions. [2024-11-28 05:04:06,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 51 transitions, 225 flow [2024-11-28 05:04:06,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 51 transitions, 219 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-28 05:04:06,017 INFO L231 Difference]: Finished difference. Result has 33 places, 31 transitions, 81 flow [2024-11-28 05:04:06,019 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=81, PETRI_PLACES=33, PETRI_TRANSITIONS=31} [2024-11-28 05:04:06,020 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 3 predicate places. [2024-11-28 05:04:06,020 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 31 transitions, 81 flow [2024-11-28 05:04:06,020 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:04:06,020 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:04:06,020 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:04:06,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 05:04:06,021 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 05:04:06,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:04:06,021 INFO L85 PathProgramCache]: Analyzing trace with hash 2075788507, now seen corresponding path program 1 times [2024-11-28 05:04:06,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:04:06,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219505935] [2024-11-28 05:04:06,022 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:04:06,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:04:06,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:04:06,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:04:06,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:04:06,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219505935] [2024-11-28 05:04:06,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219505935] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:04:06,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:04:06,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:04:06,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242580312] [2024-11-28 05:04:06,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:04:06,099 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:04:06,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:04:06,100 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:04:06,100 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:04:06,101 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-28 05:04:06,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 31 transitions, 81 flow. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:04:06,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:04:06,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-28 05:04:06,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:04:06,250 INFO L124 PetriNetUnfolderBase]: 223/370 cut-off events. [2024-11-28 05:04:06,250 INFO L125 PetriNetUnfolderBase]: For 147/147 co-relation queries the response was YES. [2024-11-28 05:04:06,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 807 conditions, 370 events. 223/370 cut-off events. For 147/147 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1162 event pairs, 73 based on Foata normal form. 21/327 useless extension candidates. Maximal degree in co-relation 797. Up to 302 conditions per place. [2024-11-28 05:04:06,255 INFO L140 encePairwiseOnDemand]: 30/34 looper letters, 33 selfloop transitions, 2 changer transitions 5/41 dead transitions. [2024-11-28 05:04:06,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 41 transitions, 187 flow [2024-11-28 05:04:06,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:04:06,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 05:04:06,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 51 transitions. [2024-11-28 05:04:06,258 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-28 05:04:06,259 INFO L175 Difference]: Start difference. First operand has 33 places, 31 transitions, 81 flow. Second operand 3 states and 51 transitions. [2024-11-28 05:04:06,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 41 transitions, 187 flow [2024-11-28 05:04:06,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 41 transitions, 184 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-28 05:04:06,262 INFO L231 Difference]: Finished difference. Result has 33 places, 31 transitions, 84 flow [2024-11-28 05:04:06,263 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=33, PETRI_TRANSITIONS=31} [2024-11-28 05:04:06,264 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 3 predicate places. [2024-11-28 05:04:06,264 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 31 transitions, 84 flow [2024-11-28 05:04:06,264 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:04:06,264 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:04:06,264 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:04:06,264 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 05:04:06,265 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 05:04:06,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:04:06,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1241685879, now seen corresponding path program 1 times [2024-11-28 05:04:06,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:04:06,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632784923] [2024-11-28 05:04:06,267 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:04:06,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:04:06,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:04:06,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:04:06,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:04:06,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632784923] [2024-11-28 05:04:06,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632784923] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:04:06,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:04:06,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 05:04:06,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342225101] [2024-11-28 05:04:06,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:04:06,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 05:04:06,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:04:06,865 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 05:04:06,865 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-28 05:04:06,866 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-28 05:04:06,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 31 transitions, 84 flow. Second operand has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:04:06,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:04:06,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-28 05:04:06,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:04:07,422 INFO L124 PetriNetUnfolderBase]: 564/938 cut-off events. [2024-11-28 05:04:07,422 INFO L125 PetriNetUnfolderBase]: For 186/186 co-relation queries the response was YES. [2024-11-28 05:04:07,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2076 conditions, 938 events. 564/938 cut-off events. For 186/186 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3906 event pairs, 64 based on Foata normal form. 1/777 useless extension candidates. Maximal degree in co-relation 545. Up to 233 conditions per place. [2024-11-28 05:04:07,428 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 107 selfloop transitions, 19 changer transitions 1/128 dead transitions. [2024-11-28 05:04:07,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 128 transitions, 588 flow [2024-11-28 05:04:07,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 05:04:07,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-28 05:04:07,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 157 transitions. [2024-11-28 05:04:07,432 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4197860962566845 [2024-11-28 05:04:07,433 INFO L175 Difference]: Start difference. First operand has 33 places, 31 transitions, 84 flow. Second operand 11 states and 157 transitions. [2024-11-28 05:04:07,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 128 transitions, 588 flow [2024-11-28 05:04:07,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 128 transitions, 560 flow, removed 14 selfloop flow, removed 2 redundant places. [2024-11-28 05:04:07,438 INFO L231 Difference]: Finished difference. Result has 45 places, 51 transitions, 204 flow [2024-11-28 05:04:07,439 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=204, PETRI_PLACES=45, PETRI_TRANSITIONS=51} [2024-11-28 05:04:07,439 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 15 predicate places. [2024-11-28 05:04:07,439 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 51 transitions, 204 flow [2024-11-28 05:04:07,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:04:07,440 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:04:07,440 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:04:07,440 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 05:04:07,440 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 05:04:07,441 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:04:07,442 INFO L85 PathProgramCache]: Analyzing trace with hash -840983513, now seen corresponding path program 1 times [2024-11-28 05:04:07,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:04:07,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700110012] [2024-11-28 05:04:07,442 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:04:07,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:04:07,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:04:07,938 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:04:07,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:04:07,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700110012] [2024-11-28 05:04:07,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700110012] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:04:07,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218474040] [2024-11-28 05:04:07,939 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:04:07,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:04:07,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:04:07,945 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:04:07,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 05:04:08,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:04:08,060 INFO L256 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-28 05:04:08,065 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:04:08,620 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:04:08,621 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:04:09,826 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:04:09,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1218474040] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 05:04:09,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:04:09,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9, 9] total 25 [2024-11-28 05:04:09,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401493343] [2024-11-28 05:04:09,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:04:09,828 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 05:04:09,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:04:09,828 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 05:04:09,829 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=523, Unknown=0, NotChecked=0, Total=650 [2024-11-28 05:04:09,829 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-28 05:04:09,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 51 transitions, 204 flow. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:04:09,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:04:09,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-28 05:04:09,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:04:11,019 INFO L124 PetriNetUnfolderBase]: 1208/2020 cut-off events. [2024-11-28 05:04:11,019 INFO L125 PetriNetUnfolderBase]: For 530/530 co-relation queries the response was YES. [2024-11-28 05:04:11,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5109 conditions, 2020 events. 1208/2020 cut-off events. For 530/530 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 10331 event pairs, 134 based on Foata normal form. 1/1839 useless extension candidates. Maximal degree in co-relation 3279. Up to 442 conditions per place. [2024-11-28 05:04:11,030 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 137 selfloop transitions, 52 changer transitions 7/197 dead transitions. [2024-11-28 05:04:11,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 197 transitions, 1073 flow [2024-11-28 05:04:11,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 05:04:11,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-28 05:04:11,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 201 transitions. [2024-11-28 05:04:11,032 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45475113122171945 [2024-11-28 05:04:11,033 INFO L175 Difference]: Start difference. First operand has 45 places, 51 transitions, 204 flow. Second operand 13 states and 201 transitions. [2024-11-28 05:04:11,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 197 transitions, 1073 flow [2024-11-28 05:04:11,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 197 transitions, 1069 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-11-28 05:04:11,039 INFO L231 Difference]: Finished difference. Result has 66 places, 86 transitions, 594 flow [2024-11-28 05:04:11,039 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=594, PETRI_PLACES=66, PETRI_TRANSITIONS=86} [2024-11-28 05:04:11,041 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 36 predicate places. [2024-11-28 05:04:11,041 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 86 transitions, 594 flow [2024-11-28 05:04:11,042 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:04:11,042 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:04:11,042 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:04:11,052 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 05:04:11,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:04:11,246 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 05:04:11,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:04:11,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1802131485, now seen corresponding path program 2 times [2024-11-28 05:04:11,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:04:11,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541386170] [2024-11-28 05:04:11,247 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:04:11,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:04:11,279 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 05:04:11,282 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:04:11,655 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:04:11,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:04:11,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541386170] [2024-11-28 05:04:11,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541386170] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:04:11,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:04:11,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 05:04:11,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555070593] [2024-11-28 05:04:11,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:04:11,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 05:04:11,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:04:11,657 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 05:04:11,658 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-28 05:04:11,658 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-28 05:04:11,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 86 transitions, 594 flow. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:04:11,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:04:11,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-28 05:04:11,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:04:12,423 INFO L124 PetriNetUnfolderBase]: 1270/2168 cut-off events. [2024-11-28 05:04:12,423 INFO L125 PetriNetUnfolderBase]: For 3121/3121 co-relation queries the response was YES. [2024-11-28 05:04:12,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6818 conditions, 2168 events. 1270/2168 cut-off events. For 3121/3121 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 11342 event pairs, 158 based on Foata normal form. 1/1985 useless extension candidates. Maximal degree in co-relation 6748. Up to 608 conditions per place. [2024-11-28 05:04:12,440 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 126 selfloop transitions, 57 changer transitions 7/191 dead transitions. [2024-11-28 05:04:12,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 191 transitions, 1373 flow [2024-11-28 05:04:12,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 05:04:12,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-28 05:04:12,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 187 transitions. [2024-11-28 05:04:12,442 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4230769230769231 [2024-11-28 05:04:12,442 INFO L175 Difference]: Start difference. First operand has 66 places, 86 transitions, 594 flow. Second operand 13 states and 187 transitions. [2024-11-28 05:04:12,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 191 transitions, 1373 flow [2024-11-28 05:04:12,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 191 transitions, 1354 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-11-28 05:04:12,475 INFO L231 Difference]: Finished difference. Result has 82 places, 97 transitions, 893 flow [2024-11-28 05:04:12,477 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=581, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=893, PETRI_PLACES=82, PETRI_TRANSITIONS=97} [2024-11-28 05:04:12,478 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 52 predicate places. [2024-11-28 05:04:12,479 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 97 transitions, 893 flow [2024-11-28 05:04:12,479 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:04:12,479 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:04:12,480 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:04:12,480 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 05:04:12,480 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 05:04:12,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:04:12,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1621213571, now seen corresponding path program 1 times [2024-11-28 05:04:12,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:04:12,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342754186] [2024-11-28 05:04:12,481 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:04:12,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:04:12,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:04:12,796 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:04:12,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:04:12,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342754186] [2024-11-28 05:04:12,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342754186] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:04:12,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794443559] [2024-11-28 05:04:12,797 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:04:12,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:04:12,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:04:12,799 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:04:12,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 05:04:12,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:04:12,888 INFO L256 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-28 05:04:12,890 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:04:13,251 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:04:13,252 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:04:14,098 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:04:14,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [794443559] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 05:04:14,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:04:14,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 22 [2024-11-28 05:04:14,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863391867] [2024-11-28 05:04:14,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:04:14,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 05:04:14,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:04:14,100 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 05:04:14,101 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2024-11-28 05:04:14,101 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-28 05:04:14,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 97 transitions, 893 flow. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:04:14,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:04:14,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-28 05:04:14,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:04:15,494 INFO L124 PetriNetUnfolderBase]: 1715/2908 cut-off events. [2024-11-28 05:04:15,494 INFO L125 PetriNetUnfolderBase]: For 7624/7624 co-relation queries the response was YES. [2024-11-28 05:04:15,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10000 conditions, 2908 events. 1715/2908 cut-off events. For 7624/7624 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 16291 event pairs, 390 based on Foata normal form. 1/2654 useless extension candidates. Maximal degree in co-relation 9904. Up to 872 conditions per place. [2024-11-28 05:04:15,515 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 202 selfloop transitions, 52 changer transitions 9/264 dead transitions. [2024-11-28 05:04:15,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 264 transitions, 2159 flow [2024-11-28 05:04:15,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 05:04:15,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-28 05:04:15,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 248 transitions. [2024-11-28 05:04:15,518 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5210084033613446 [2024-11-28 05:04:15,519 INFO L175 Difference]: Start difference. First operand has 82 places, 97 transitions, 893 flow. Second operand 14 states and 248 transitions. [2024-11-28 05:04:15,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 264 transitions, 2159 flow [2024-11-28 05:04:15,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 264 transitions, 2091 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-11-28 05:04:15,561 INFO L231 Difference]: Finished difference. Result has 97 places, 116 transitions, 1177 flow [2024-11-28 05:04:15,562 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=855, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1177, PETRI_PLACES=97, PETRI_TRANSITIONS=116} [2024-11-28 05:04:15,563 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 67 predicate places. [2024-11-28 05:04:15,564 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 116 transitions, 1177 flow [2024-11-28 05:04:15,564 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:04:15,564 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:04:15,564 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:04:15,572 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 05:04:15,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:04:15,765 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 05:04:15,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:04:15,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1934804807, now seen corresponding path program 3 times [2024-11-28 05:04:15,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:04:15,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226586641] [2024-11-28 05:04:15,766 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 05:04:15,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:04:15,793 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-28 05:04:15,793 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:04:16,131 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:04:16,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:04:16,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226586641] [2024-11-28 05:04:16,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226586641] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:04:16,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:04:16,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 05:04:16,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117599441] [2024-11-28 05:04:16,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:04:16,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 05:04:16,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:04:16,132 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 05:04:16,132 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-28 05:04:16,132 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-28 05:04:16,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 116 transitions, 1177 flow. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:04:16,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:04:16,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-28 05:04:16,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:04:16,923 INFO L124 PetriNetUnfolderBase]: 1705/2885 cut-off events. [2024-11-28 05:04:16,924 INFO L125 PetriNetUnfolderBase]: For 10215/10215 co-relation queries the response was YES. [2024-11-28 05:04:16,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10610 conditions, 2885 events. 1705/2885 cut-off events. For 10215/10215 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 16135 event pairs, 267 based on Foata normal form. 1/2631 useless extension candidates. Maximal degree in co-relation 10512. Up to 1351 conditions per place. [2024-11-28 05:04:16,947 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 129 selfloop transitions, 65 changer transitions 8/203 dead transitions. [2024-11-28 05:04:16,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 203 transitions, 1863 flow [2024-11-28 05:04:16,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 05:04:16,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-28 05:04:16,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 178 transitions. [2024-11-28 05:04:16,949 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40271493212669685 [2024-11-28 05:04:16,949 INFO L175 Difference]: Start difference. First operand has 97 places, 116 transitions, 1177 flow. Second operand 13 states and 178 transitions. [2024-11-28 05:04:16,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 203 transitions, 1863 flow [2024-11-28 05:04:16,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 203 transitions, 1788 flow, removed 36 selfloop flow, removed 2 redundant places. [2024-11-28 05:04:17,000 INFO L231 Difference]: Finished difference. Result has 107 places, 117 transitions, 1264 flow [2024-11-28 05:04:17,000 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1106, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1264, PETRI_PLACES=107, PETRI_TRANSITIONS=117} [2024-11-28 05:04:17,001 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 77 predicate places. [2024-11-28 05:04:17,001 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 117 transitions, 1264 flow [2024-11-28 05:04:17,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:04:17,001 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:04:17,001 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:04:17,001 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 05:04:17,001 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 05:04:17,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:04:17,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1991429427, now seen corresponding path program 4 times [2024-11-28 05:04:17,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:04:17,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911912159] [2024-11-28 05:04:17,002 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 05:04:17,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:04:17,018 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 05:04:17,018 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:04:17,312 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:04:17,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:04:17,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911912159] [2024-11-28 05:04:17,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911912159] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:04:17,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356345588] [2024-11-28 05:04:17,313 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 05:04:17,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:04:17,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:04:17,316 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:04:17,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 05:04:17,401 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 05:04:17,401 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:04:17,403 INFO L256 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-28 05:04:17,405 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:04:17,824 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:04:17,824 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:04:18,327 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:04:18,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1356345588] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 05:04:18,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:04:18,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9, 9] total 25 [2024-11-28 05:04:18,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078970352] [2024-11-28 05:04:18,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:04:18,328 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 05:04:18,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:04:18,329 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 05:04:18,329 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=523, Unknown=0, NotChecked=0, Total=650 [2024-11-28 05:04:18,329 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-28 05:04:18,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 117 transitions, 1264 flow. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:04:18,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:04:18,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-28 05:04:18,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:04:19,344 INFO L124 PetriNetUnfolderBase]: 1687/2843 cut-off events. [2024-11-28 05:04:19,344 INFO L125 PetriNetUnfolderBase]: For 11012/11012 co-relation queries the response was YES. [2024-11-28 05:04:19,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10768 conditions, 2843 events. 1687/2843 cut-off events. For 11012/11012 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 15705 event pairs, 316 based on Foata normal form. 1/2589 useless extension candidates. Maximal degree in co-relation 10674. Up to 761 conditions per place. [2024-11-28 05:04:19,379 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 123 selfloop transitions, 65 changer transitions 8/197 dead transitions. [2024-11-28 05:04:19,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 197 transitions, 1948 flow [2024-11-28 05:04:19,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 05:04:19,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-28 05:04:19,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 167 transitions. [2024-11-28 05:04:19,380 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40931372549019607 [2024-11-28 05:04:19,381 INFO L175 Difference]: Start difference. First operand has 107 places, 117 transitions, 1264 flow. Second operand 12 states and 167 transitions. [2024-11-28 05:04:19,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 197 transitions, 1948 flow [2024-11-28 05:04:19,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 197 transitions, 1849 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-11-28 05:04:19,443 INFO L231 Difference]: Finished difference. Result has 112 places, 117 transitions, 1337 flow [2024-11-28 05:04:19,444 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1175, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1337, PETRI_PLACES=112, PETRI_TRANSITIONS=117} [2024-11-28 05:04:19,446 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 82 predicate places. [2024-11-28 05:04:19,446 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 117 transitions, 1337 flow [2024-11-28 05:04:19,446 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:04:19,446 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:04:19,446 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:04:19,456 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 05:04:19,650 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:04:19,651 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 05:04:19,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:04:19,651 INFO L85 PathProgramCache]: Analyzing trace with hash -30638727, now seen corresponding path program 2 times [2024-11-28 05:04:19,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:04:19,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532253024] [2024-11-28 05:04:19,651 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:04:19,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:04:19,666 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 05:04:19,666 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:04:19,968 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:04:19,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:04:19,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532253024] [2024-11-28 05:04:19,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532253024] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:04:19,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:04:19,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 05:04:19,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912965429] [2024-11-28 05:04:19,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:04:19,968 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 05:04:19,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:04:19,969 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 05:04:19,969 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-28 05:04:19,969 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-28 05:04:19,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 117 transitions, 1337 flow. Second operand has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:04:19,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:04:19,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-28 05:04:19,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:04:20,695 INFO L124 PetriNetUnfolderBase]: 1727/2934 cut-off events. [2024-11-28 05:04:20,696 INFO L125 PetriNetUnfolderBase]: For 11878/11878 co-relation queries the response was YES. [2024-11-28 05:04:20,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11381 conditions, 2934 events. 1727/2934 cut-off events. For 11878/11878 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 16371 event pairs, 283 based on Foata normal form. 1/2676 useless extension candidates. Maximal degree in co-relation 11275. Up to 829 conditions per place. [2024-11-28 05:04:20,717 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 152 selfloop transitions, 66 changer transitions 8/227 dead transitions. [2024-11-28 05:04:20,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 227 transitions, 2306 flow [2024-11-28 05:04:20,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 05:04:20,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-28 05:04:20,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 186 transitions. [2024-11-28 05:04:20,718 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45588235294117646 [2024-11-28 05:04:20,719 INFO L175 Difference]: Start difference. First operand has 112 places, 117 transitions, 1337 flow. Second operand 12 states and 186 transitions. [2024-11-28 05:04:20,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 227 transitions, 2306 flow [2024-11-28 05:04:20,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 227 transitions, 2174 flow, removed 10 selfloop flow, removed 10 redundant places. [2024-11-28 05:04:20,767 INFO L231 Difference]: Finished difference. Result has 119 places, 128 transitions, 1598 flow [2024-11-28 05:04:20,767 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1223, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1598, PETRI_PLACES=119, PETRI_TRANSITIONS=128} [2024-11-28 05:04:20,767 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 89 predicate places. [2024-11-28 05:04:20,768 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 128 transitions, 1598 flow [2024-11-28 05:04:20,768 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:04:20,768 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:04:20,768 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:04:20,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 05:04:20,768 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 05:04:20,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:04:20,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1917220491, now seen corresponding path program 3 times [2024-11-28 05:04:20,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:04:20,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436977378] [2024-11-28 05:04:20,769 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 05:04:20,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:04:20,784 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-28 05:04:20,785 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:04:21,172 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:04:21,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:04:21,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436977378] [2024-11-28 05:04:21,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436977378] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:04:21,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:04:21,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 05:04:21,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4897867] [2024-11-28 05:04:21,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:04:21,173 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 05:04:21,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:04:21,173 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 05:04:21,174 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-28 05:04:21,174 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-28 05:04:21,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 128 transitions, 1598 flow. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:04:21,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:04:21,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-28 05:04:21,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:04:22,051 INFO L124 PetriNetUnfolderBase]: 1438/2499 cut-off events. [2024-11-28 05:04:22,051 INFO L125 PetriNetUnfolderBase]: For 11420/11420 co-relation queries the response was YES. [2024-11-28 05:04:22,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9970 conditions, 2499 events. 1438/2499 cut-off events. For 11420/11420 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 13917 event pairs, 277 based on Foata normal form. 1/2303 useless extension candidates. Maximal degree in co-relation 9863. Up to 1358 conditions per place. [2024-11-28 05:04:22,073 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 135 selfloop transitions, 68 changer transitions 8/212 dead transitions. [2024-11-28 05:04:22,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 212 transitions, 2269 flow [2024-11-28 05:04:22,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 05:04:22,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-28 05:04:22,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 180 transitions. [2024-11-28 05:04:22,075 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4072398190045249 [2024-11-28 05:04:22,075 INFO L175 Difference]: Start difference. First operand has 119 places, 128 transitions, 1598 flow. Second operand 13 states and 180 transitions. [2024-11-28 05:04:22,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 212 transitions, 2269 flow [2024-11-28 05:04:22,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 212 transitions, 2197 flow, removed 19 selfloop flow, removed 4 redundant places. [2024-11-28 05:04:22,140 INFO L231 Difference]: Finished difference. Result has 132 places, 132 transitions, 1749 flow [2024-11-28 05:04:22,140 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1355, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1749, PETRI_PLACES=132, PETRI_TRANSITIONS=132} [2024-11-28 05:04:22,141 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 102 predicate places. [2024-11-28 05:04:22,141 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 132 transitions, 1749 flow [2024-11-28 05:04:22,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:04:22,141 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:04:22,141 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:04:22,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 05:04:22,141 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 05:04:22,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:04:22,142 INFO L85 PathProgramCache]: Analyzing trace with hash 1212340125, now seen corresponding path program 5 times [2024-11-28 05:04:22,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:04:22,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607164937] [2024-11-28 05:04:22,142 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 05:04:22,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:04:22,156 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 05:04:22,156 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:04:22,387 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:04:22,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:04:22,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607164937] [2024-11-28 05:04:22,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607164937] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:04:22,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [745532641] [2024-11-28 05:04:22,388 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 05:04:22,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:04:22,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:04:22,392 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:04:22,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 05:04:22,478 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 05:04:22,478 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:04:22,479 INFO L256 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-28 05:04:22,481 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:04:22,848 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:04:22,849 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:04:23,685 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:04:23,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [745532641] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 05:04:23,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:04:23,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9, 9] total 25 [2024-11-28 05:04:23,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453600136] [2024-11-28 05:04:23,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:04:23,686 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 05:04:23,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:04:23,686 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 05:04:23,687 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=523, Unknown=0, NotChecked=0, Total=650 [2024-11-28 05:04:23,689 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-28 05:04:23,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 132 transitions, 1749 flow. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:04:23,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:04:23,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-28 05:04:23,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:04:24,803 INFO L124 PetriNetUnfolderBase]: 1478/2571 cut-off events. [2024-11-28 05:04:24,803 INFO L125 PetriNetUnfolderBase]: For 13712/13712 co-relation queries the response was YES. [2024-11-28 05:04:24,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10998 conditions, 2571 events. 1478/2571 cut-off events. For 13712/13712 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 14386 event pairs, 267 based on Foata normal form. 1/2455 useless extension candidates. Maximal degree in co-relation 10899. Up to 723 conditions per place. [2024-11-28 05:04:24,824 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 154 selfloop transitions, 72 changer transitions 9/236 dead transitions. [2024-11-28 05:04:24,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 236 transitions, 2683 flow [2024-11-28 05:04:24,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 05:04:24,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-28 05:04:24,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 192 transitions. [2024-11-28 05:04:24,826 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4343891402714932 [2024-11-28 05:04:24,826 INFO L175 Difference]: Start difference. First operand has 132 places, 132 transitions, 1749 flow. Second operand 13 states and 192 transitions. [2024-11-28 05:04:24,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 236 transitions, 2683 flow [2024-11-28 05:04:24,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 236 transitions, 2602 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-11-28 05:04:24,894 INFO L231 Difference]: Finished difference. Result has 141 places, 134 transitions, 1859 flow [2024-11-28 05:04:24,894 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1674, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1859, PETRI_PLACES=141, PETRI_TRANSITIONS=134} [2024-11-28 05:04:24,896 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 111 predicate places. [2024-11-28 05:04:24,897 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 134 transitions, 1859 flow [2024-11-28 05:04:24,897 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:04:24,897 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:04:24,898 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:04:24,907 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 05:04:25,098 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:04:25,098 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 05:04:25,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:04:25,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1075707869, now seen corresponding path program 6 times [2024-11-28 05:04:25,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:04:25,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177354323] [2024-11-28 05:04:25,099 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 05:04:25,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:04:25,115 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-28 05:04:25,116 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:04:25,386 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:04:25,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:04:25,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177354323] [2024-11-28 05:04:25,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177354323] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:04:25,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:04:25,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 05:04:25,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043968433] [2024-11-28 05:04:25,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:04:25,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 05:04:25,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:04:25,389 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 05:04:25,389 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-28 05:04:25,389 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-28 05:04:25,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 134 transitions, 1859 flow. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:04:25,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:04:25,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-28 05:04:25,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:04:26,113 INFO L124 PetriNetUnfolderBase]: 1469/2549 cut-off events. [2024-11-28 05:04:26,114 INFO L125 PetriNetUnfolderBase]: For 15171/15171 co-relation queries the response was YES. [2024-11-28 05:04:26,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11052 conditions, 2549 events. 1469/2549 cut-off events. For 15171/15171 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 14205 event pairs, 280 based on Foata normal form. 1/2433 useless extension candidates. Maximal degree in co-relation 10956. Up to 1081 conditions per place. [2024-11-28 05:04:26,136 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 128 selfloop transitions, 69 changer transitions 8/206 dead transitions. [2024-11-28 05:04:26,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 206 transitions, 2581 flow [2024-11-28 05:04:26,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 05:04:26,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-28 05:04:26,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 153 transitions. [2024-11-28 05:04:26,137 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-11-28 05:04:26,137 INFO L175 Difference]: Start difference. First operand has 141 places, 134 transitions, 1859 flow. Second operand 12 states and 153 transitions. [2024-11-28 05:04:26,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 206 transitions, 2581 flow [2024-11-28 05:04:26,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 206 transitions, 2463 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-11-28 05:04:26,209 INFO L231 Difference]: Finished difference. Result has 143 places, 133 transitions, 1871 flow [2024-11-28 05:04:26,210 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1743, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1871, PETRI_PLACES=143, PETRI_TRANSITIONS=133} [2024-11-28 05:04:26,211 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 113 predicate places. [2024-11-28 05:04:26,211 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 133 transitions, 1871 flow [2024-11-28 05:04:26,212 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:04:26,212 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:04:26,212 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:04:26,212 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 05:04:26,213 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 05:04:26,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:04:26,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1180810673, now seen corresponding path program 1 times [2024-11-28 05:04:26,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:04:26,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105670873] [2024-11-28 05:04:26,217 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:04:26,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:04:26,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:04:26,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:04:26,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:04:26,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105670873] [2024-11-28 05:04:26,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105670873] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:04:26,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:04:26,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 05:04:26,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052040676] [2024-11-28 05:04:26,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:04:26,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 05:04:26,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:04:26,302 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 05:04:26,302 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:04:26,303 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-28 05:04:26,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 133 transitions, 1871 flow. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:04:26,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:04:26,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-28 05:04:26,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:04:26,703 INFO L124 PetriNetUnfolderBase]: 1124/1991 cut-off events. [2024-11-28 05:04:26,703 INFO L125 PetriNetUnfolderBase]: For 11042/11042 co-relation queries the response was YES. [2024-11-28 05:04:26,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8649 conditions, 1991 events. 1124/1991 cut-off events. For 11042/11042 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 10916 event pairs, 658 based on Foata normal form. 0/1932 useless extension candidates. Maximal degree in co-relation 8569. Up to 1223 conditions per place. [2024-11-28 05:04:26,721 INFO L140 encePairwiseOnDemand]: 28/34 looper letters, 115 selfloop transitions, 16 changer transitions 10/142 dead transitions. [2024-11-28 05:04:26,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 142 transitions, 1995 flow [2024-11-28 05:04:26,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 05:04:26,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 05:04:26,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 75 transitions. [2024-11-28 05:04:26,723 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4411764705882353 [2024-11-28 05:04:26,723 INFO L175 Difference]: Start difference. First operand has 143 places, 133 transitions, 1871 flow. Second operand 5 states and 75 transitions. [2024-11-28 05:04:26,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 142 transitions, 1995 flow [2024-11-28 05:04:26,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 142 transitions, 1840 flow, removed 5 selfloop flow, removed 14 redundant places. [2024-11-28 05:04:26,767 INFO L231 Difference]: Finished difference. Result has 133 places, 109 transitions, 1324 flow [2024-11-28 05:04:26,768 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1367, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1324, PETRI_PLACES=133, PETRI_TRANSITIONS=109} [2024-11-28 05:04:26,768 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 103 predicate places. [2024-11-28 05:04:26,768 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 109 transitions, 1324 flow [2024-11-28 05:04:26,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:04:26,769 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:04:26,769 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:04:26,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-28 05:04:26,769 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 05:04:26,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:04:26,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1165781802, now seen corresponding path program 1 times [2024-11-28 05:04:26,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:04:26,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520439191] [2024-11-28 05:04:26,770 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:04:26,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:04:26,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:04:26,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:04:26,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:04:26,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520439191] [2024-11-28 05:04:26,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520439191] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:04:26,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:04:26,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 05:04:26,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772450685] [2024-11-28 05:04:26,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:04:26,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 05:04:26,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:04:26,878 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 05:04:26,879 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:04:26,879 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-28 05:04:26,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 109 transitions, 1324 flow. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:04:26,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:04:26,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-28 05:04:26,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:04:27,142 INFO L124 PetriNetUnfolderBase]: 961/1690 cut-off events. [2024-11-28 05:04:27,142 INFO L125 PetriNetUnfolderBase]: For 8123/8123 co-relation queries the response was YES. [2024-11-28 05:04:27,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7397 conditions, 1690 events. 961/1690 cut-off events. For 8123/8123 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 8722 event pairs, 592 based on Foata normal form. 20/1708 useless extension candidates. Maximal degree in co-relation 7263. Up to 1223 conditions per place. [2024-11-28 05:04:27,152 INFO L140 encePairwiseOnDemand]: 28/34 looper letters, 97 selfloop transitions, 8 changer transitions 18/124 dead transitions. [2024-11-28 05:04:27,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 124 transitions, 1568 flow [2024-11-28 05:04:27,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 05:04:27,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 05:04:27,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 73 transitions. [2024-11-28 05:04:27,153 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4294117647058823 [2024-11-28 05:04:27,153 INFO L175 Difference]: Start difference. First operand has 133 places, 109 transitions, 1324 flow. Second operand 5 states and 73 transitions. [2024-11-28 05:04:27,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 124 transitions, 1568 flow [2024-11-28 05:04:27,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 124 transitions, 1535 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-11-28 05:04:27,196 INFO L231 Difference]: Finished difference. Result has 132 places, 87 transitions, 940 flow [2024-11-28 05:04:27,196 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1228, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=940, PETRI_PLACES=132, PETRI_TRANSITIONS=87} [2024-11-28 05:04:27,196 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 102 predicate places. [2024-11-28 05:04:27,197 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 87 transitions, 940 flow [2024-11-28 05:04:27,197 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:04:27,197 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:04:27,197 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:04:27,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-28 05:04:27,197 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 05:04:27,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:04:27,198 INFO L85 PathProgramCache]: Analyzing trace with hash -439280213, now seen corresponding path program 4 times [2024-11-28 05:04:27,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:04:27,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098097284] [2024-11-28 05:04:27,198 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 05:04:27,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:04:27,210 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 05:04:27,211 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:04:27,438 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:04:27,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:04:27,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098097284] [2024-11-28 05:04:27,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098097284] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:04:27,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582051240] [2024-11-28 05:04:27,439 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 05:04:27,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:04:27,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:04:27,441 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:04:27,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 05:04:27,521 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 05:04:27,521 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:04:27,523 INFO L256 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-28 05:04:27,524 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:04:27,860 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:04:27,860 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:04:28,324 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:04:28,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [582051240] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 05:04:28,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:04:28,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [8, 10] total 26 [2024-11-28 05:04:28,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10814912] [2024-11-28 05:04:28,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:04:28,325 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 05:04:28,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:04:28,326 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 05:04:28,326 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=535, Unknown=0, NotChecked=0, Total=650 [2024-11-28 05:04:28,326 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-28 05:04:28,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 87 transitions, 940 flow. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:04:28,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:04:28,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-28 05:04:28,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:04:29,283 INFO L124 PetriNetUnfolderBase]: 1030/1785 cut-off events. [2024-11-28 05:04:29,283 INFO L125 PetriNetUnfolderBase]: For 7696/7696 co-relation queries the response was YES. [2024-11-28 05:04:29,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7658 conditions, 1785 events. 1030/1785 cut-off events. For 7696/7696 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 9195 event pairs, 177 based on Foata normal form. 2/1785 useless extension candidates. Maximal degree in co-relation 7528. Up to 612 conditions per place. [2024-11-28 05:04:29,298 INFO L140 encePairwiseOnDemand]: 19/34 looper letters, 155 selfloop transitions, 54 changer transitions 12/222 dead transitions. [2024-11-28 05:04:29,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 222 transitions, 2171 flow [2024-11-28 05:04:29,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 05:04:29,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-28 05:04:29,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 220 transitions. [2024-11-28 05:04:29,300 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43137254901960786 [2024-11-28 05:04:29,300 INFO L175 Difference]: Start difference. First operand has 132 places, 87 transitions, 940 flow. Second operand 15 states and 220 transitions. [2024-11-28 05:04:29,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 222 transitions, 2171 flow [2024-11-28 05:04:29,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 222 transitions, 2012 flow, removed 63 selfloop flow, removed 13 redundant places. [2024-11-28 05:04:29,330 INFO L231 Difference]: Finished difference. Result has 133 places, 103 transitions, 1199 flow [2024-11-28 05:04:29,330 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=857, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1199, PETRI_PLACES=133, PETRI_TRANSITIONS=103} [2024-11-28 05:04:29,331 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 103 predicate places. [2024-11-28 05:04:29,331 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 103 transitions, 1199 flow [2024-11-28 05:04:29,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:04:29,331 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:04:29,331 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:04:29,340 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 05:04:29,536 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:04:29,536 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 05:04:29,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:04:29,537 INFO L85 PathProgramCache]: Analyzing trace with hash -30058989, now seen corresponding path program 5 times [2024-11-28 05:04:29,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:04:29,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110231258] [2024-11-28 05:04:29,540 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 05:04:29,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:04:29,554 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 05:04:29,554 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:04:29,754 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:04:29,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:04:29,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110231258] [2024-11-28 05:04:29,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110231258] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:04:29,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350100689] [2024-11-28 05:04:29,754 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 05:04:29,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:04:29,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:04:29,756 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:04:29,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 05:04:29,835 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 05:04:29,835 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:04:29,836 INFO L256 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-28 05:04:29,838 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:04:30,149 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:04:30,149 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:04:30,920 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:04:30,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1350100689] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 05:04:30,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:04:30,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 22 [2024-11-28 05:04:30,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646743490] [2024-11-28 05:04:30,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:04:30,922 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 05:04:30,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:04:30,923 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 05:04:30,923 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=399, Unknown=0, NotChecked=0, Total=506 [2024-11-28 05:04:30,923 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-28 05:04:30,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 103 transitions, 1199 flow. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:04:30,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:04:30,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-28 05:04:30,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:04:31,681 INFO L124 PetriNetUnfolderBase]: 997/1717 cut-off events. [2024-11-28 05:04:31,682 INFO L125 PetriNetUnfolderBase]: For 8585/8585 co-relation queries the response was YES. [2024-11-28 05:04:31,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7849 conditions, 1717 events. 997/1717 cut-off events. For 8585/8585 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 8684 event pairs, 259 based on Foata normal form. 1/1716 useless extension candidates. Maximal degree in co-relation 7774. Up to 1120 conditions per place. [2024-11-28 05:04:31,690 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 94 selfloop transitions, 30 changer transitions 21/146 dead transitions. [2024-11-28 05:04:31,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 146 transitions, 1673 flow [2024-11-28 05:04:31,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 05:04:31,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-28 05:04:31,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-11-28 05:04:31,691 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.30637254901960786 [2024-11-28 05:04:31,691 INFO L175 Difference]: Start difference. First operand has 133 places, 103 transitions, 1199 flow. Second operand 12 states and 125 transitions. [2024-11-28 05:04:31,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 146 transitions, 1673 flow [2024-11-28 05:04:31,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 146 transitions, 1472 flow, removed 34 selfloop flow, removed 17 redundant places. [2024-11-28 05:04:31,717 INFO L231 Difference]: Finished difference. Result has 124 places, 96 transitions, 969 flow [2024-11-28 05:04:31,717 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1006, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=969, PETRI_PLACES=124, PETRI_TRANSITIONS=96} [2024-11-28 05:04:31,718 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 94 predicate places. [2024-11-28 05:04:31,718 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 96 transitions, 969 flow [2024-11-28 05:04:31,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:04:31,718 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:04:31,718 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:04:31,725 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 05:04:31,918 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:04:31,919 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 05:04:31,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:04:31,919 INFO L85 PathProgramCache]: Analyzing trace with hash -757062343, now seen corresponding path program 6 times [2024-11-28 05:04:31,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:04:31,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358559080] [2024-11-28 05:04:31,919 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 05:04:31,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:04:31,934 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-28 05:04:31,935 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:04:32,303 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:04:32,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:04:32,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358559080] [2024-11-28 05:04:32,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358559080] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:04:32,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:04:32,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 05:04:32,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036712268] [2024-11-28 05:04:32,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:04:32,305 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 05:04:32,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:04:32,306 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 05:04:32,306 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-28 05:04:32,306 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-28 05:04:32,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 96 transitions, 969 flow. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:04:32,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:04:32,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-28 05:04:32,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:04:32,781 INFO L124 PetriNetUnfolderBase]: 953/1630 cut-off events. [2024-11-28 05:04:32,781 INFO L125 PetriNetUnfolderBase]: For 5593/5593 co-relation queries the response was YES. [2024-11-28 05:04:32,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7095 conditions, 1630 events. 953/1630 cut-off events. For 5593/5593 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 8009 event pairs, 259 based on Foata normal form. 1/1629 useless extension candidates. Maximal degree in co-relation 7031. Up to 1120 conditions per place. [2024-11-28 05:04:32,793 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 74 selfloop transitions, 25 changer transitions 28/128 dead transitions. [2024-11-28 05:04:32,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 128 transitions, 1340 flow [2024-11-28 05:04:32,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 05:04:32,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-28 05:04:32,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-11-28 05:04:32,795 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3058823529411765 [2024-11-28 05:04:32,795 INFO L175 Difference]: Start difference. First operand has 124 places, 96 transitions, 969 flow. Second operand 10 states and 104 transitions. [2024-11-28 05:04:32,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 128 transitions, 1340 flow [2024-11-28 05:04:32,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 128 transitions, 1269 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-11-28 05:04:32,816 INFO L231 Difference]: Finished difference. Result has 118 places, 88 transitions, 866 flow [2024-11-28 05:04:32,816 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=898, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=866, PETRI_PLACES=118, PETRI_TRANSITIONS=88} [2024-11-28 05:04:32,817 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 88 predicate places. [2024-11-28 05:04:32,817 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 88 transitions, 866 flow [2024-11-28 05:04:32,817 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:04:32,817 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:04:32,817 INFO L206 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] [2024-11-28 05:04:32,817 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-28 05:04:32,817 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 05:04:32,818 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:04:32,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1752093499, now seen corresponding path program 1 times [2024-11-28 05:04:32,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:04:32,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476143439] [2024-11-28 05:04:32,818 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:04:32,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:04:32,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:04:32,884 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:04:32,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:04:32,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476143439] [2024-11-28 05:04:32,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476143439] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:04:32,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:04:32,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 05:04:32,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868808233] [2024-11-28 05:04:32,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:04:32,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 05:04:32,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:04:32,886 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 05:04:32,886 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:04:32,886 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-28 05:04:32,886 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 88 transitions, 866 flow. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:04:32,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:04:32,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-28 05:04:32,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:04:33,131 INFO L124 PetriNetUnfolderBase]: 714/1239 cut-off events. [2024-11-28 05:04:33,131 INFO L125 PetriNetUnfolderBase]: For 4251/4251 co-relation queries the response was YES. [2024-11-28 05:04:33,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5486 conditions, 1239 events. 714/1239 cut-off events. For 4251/4251 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 5861 event pairs, 408 based on Foata normal form. 40/1278 useless extension candidates. Maximal degree in co-relation 5432. Up to 719 conditions per place. [2024-11-28 05:04:33,140 INFO L140 encePairwiseOnDemand]: 28/34 looper letters, 88 selfloop transitions, 9 changer transitions 8/106 dead transitions. [2024-11-28 05:04:33,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 106 transitions, 1150 flow [2024-11-28 05:04:33,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 05:04:33,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 05:04:33,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 76 transitions. [2024-11-28 05:04:33,141 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4470588235294118 [2024-11-28 05:04:33,141 INFO L175 Difference]: Start difference. First operand has 118 places, 88 transitions, 866 flow. Second operand 5 states and 76 transitions. [2024-11-28 05:04:33,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 106 transitions, 1150 flow [2024-11-28 05:04:33,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 106 transitions, 967 flow, removed 25 selfloop flow, removed 19 redundant places. [2024-11-28 05:04:33,159 INFO L231 Difference]: Finished difference. Result has 90 places, 76 transitions, 598 flow [2024-11-28 05:04:33,159 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=599, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=598, PETRI_PLACES=90, PETRI_TRANSITIONS=76} [2024-11-28 05:04:33,160 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 60 predicate places. [2024-11-28 05:04:33,160 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 76 transitions, 598 flow [2024-11-28 05:04:33,160 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:04:33,160 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:04:33,160 INFO L206 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] [2024-11-28 05:04:33,160 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-28 05:04:33,160 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 05:04:33,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:04:33,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1848657080, now seen corresponding path program 1 times [2024-11-28 05:04:33,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:04:33,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311562298] [2024-11-28 05:04:33,161 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:04:33,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:04:33,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:04:33,224 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:04:33,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:04:33,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311562298] [2024-11-28 05:04:33,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311562298] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:04:33,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:04:33,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 05:04:33,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677197969] [2024-11-28 05:04:33,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:04:33,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 05:04:33,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:04:33,225 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 05:04:33,225 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:04:33,226 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-28 05:04:33,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 76 transitions, 598 flow. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:04:33,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:04:33,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-28 05:04:33,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:04:33,403 INFO L124 PetriNetUnfolderBase]: 525/917 cut-off events. [2024-11-28 05:04:33,403 INFO L125 PetriNetUnfolderBase]: For 2312/2312 co-relation queries the response was YES. [2024-11-28 05:04:33,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3654 conditions, 917 events. 525/917 cut-off events. For 2312/2312 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 4032 event pairs, 330 based on Foata normal form. 28/944 useless extension candidates. Maximal degree in co-relation 3613. Up to 719 conditions per place. [2024-11-28 05:04:33,409 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 51 selfloop transitions, 2 changer transitions 28/82 dead transitions. [2024-11-28 05:04:33,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 82 transitions, 745 flow [2024-11-28 05:04:33,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 05:04:33,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 05:04:33,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 66 transitions. [2024-11-28 05:04:33,410 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.38823529411764707 [2024-11-28 05:04:33,410 INFO L175 Difference]: Start difference. First operand has 90 places, 76 transitions, 598 flow. Second operand 5 states and 66 transitions. [2024-11-28 05:04:33,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 82 transitions, 745 flow [2024-11-28 05:04:33,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 82 transitions, 721 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-11-28 05:04:33,419 INFO L231 Difference]: Finished difference. Result has 81 places, 54 transitions, 371 flow [2024-11-28 05:04:33,419 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=489, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=371, PETRI_PLACES=81, PETRI_TRANSITIONS=54} [2024-11-28 05:04:33,419 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 51 predicate places. [2024-11-28 05:04:33,419 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 54 transitions, 371 flow [2024-11-28 05:04:33,420 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:04:33,420 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:04:33,420 INFO L206 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] [2024-11-28 05:04:33,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-28 05:04:33,420 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 05:04:33,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:04:33,421 INFO L85 PathProgramCache]: Analyzing trace with hash 139329423, now seen corresponding path program 1 times [2024-11-28 05:04:33,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:04:33,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308712917] [2024-11-28 05:04:33,421 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:04:33,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:04:33,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:04:33,559 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:04:33,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:04:33,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308712917] [2024-11-28 05:04:33,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308712917] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:04:33,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [303487867] [2024-11-28 05:04:33,559 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:04:33,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:04:33,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:04:33,561 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:04:33,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 05:04:33,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:04:33,651 INFO L256 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 05:04:33,654 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:04:33,772 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:04:33,773 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:04:33,895 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:04:33,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [303487867] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 05:04:33,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:04:33,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 13 [2024-11-28 05:04:33,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608681752] [2024-11-28 05:04:33,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:04:33,896 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 05:04:33,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:04:33,897 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 05:04:33,897 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2024-11-28 05:04:33,897 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-28 05:04:33,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 54 transitions, 371 flow. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:04:33,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:04:33,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-28 05:04:33,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:04:34,113 INFO L124 PetriNetUnfolderBase]: 497/843 cut-off events. [2024-11-28 05:04:34,113 INFO L125 PetriNetUnfolderBase]: For 1537/1537 co-relation queries the response was YES. [2024-11-28 05:04:34,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3260 conditions, 843 events. 497/843 cut-off events. For 1537/1537 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3454 event pairs, 231 based on Foata normal form. 36/878 useless extension candidates. Maximal degree in co-relation 3235. Up to 547 conditions per place. [2024-11-28 05:04:34,119 INFO L140 encePairwiseOnDemand]: 25/34 looper letters, 67 selfloop transitions, 9 changer transitions 0/77 dead transitions. [2024-11-28 05:04:34,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 77 transitions, 685 flow [2024-11-28 05:04:34,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 05:04:34,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-28 05:04:34,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 64 transitions. [2024-11-28 05:04:34,120 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2689075630252101 [2024-11-28 05:04:34,120 INFO L175 Difference]: Start difference. First operand has 81 places, 54 transitions, 371 flow. Second operand 7 states and 64 transitions. [2024-11-28 05:04:34,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 77 transitions, 685 flow [2024-11-28 05:04:34,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 77 transitions, 631 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-11-28 05:04:34,127 INFO L231 Difference]: Finished difference. Result has 66 places, 56 transitions, 376 flow [2024-11-28 05:04:34,127 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=376, PETRI_PLACES=66, PETRI_TRANSITIONS=56} [2024-11-28 05:04:34,127 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 36 predicate places. [2024-11-28 05:04:34,128 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 56 transitions, 376 flow [2024-11-28 05:04:34,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:04:34,128 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:04:34,128 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:04:34,137 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 05:04:34,328 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:04:34,329 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 05:04:34,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:04:34,329 INFO L85 PathProgramCache]: Analyzing trace with hash -2038432125, now seen corresponding path program 1 times [2024-11-28 05:04:34,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:04:34,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36749371] [2024-11-28 05:04:34,329 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:04:34,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:04:34,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:04:34,476 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:04:34,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:04:34,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36749371] [2024-11-28 05:04:34,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36749371] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:04:34,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990642646] [2024-11-28 05:04:34,476 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:04:34,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:04:34,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:04:34,478 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:04:34,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 05:04:34,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:04:34,570 INFO L256 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 05:04:34,571 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:04:34,655 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:04:34,657 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:04:34,757 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:04:34,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [990642646] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 05:04:34,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:04:34,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 13 [2024-11-28 05:04:34,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874518638] [2024-11-28 05:04:34,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:04:34,758 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 05:04:34,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:04:34,758 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 05:04:34,759 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-28 05:04:34,759 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-28 05:04:34,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 56 transitions, 376 flow. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:04:34,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:04:34,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-28 05:04:34,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:04:34,906 INFO L124 PetriNetUnfolderBase]: 364/613 cut-off events. [2024-11-28 05:04:34,906 INFO L125 PetriNetUnfolderBase]: For 1203/1203 co-relation queries the response was YES. [2024-11-28 05:04:34,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2504 conditions, 613 events. 364/613 cut-off events. For 1203/1203 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2213 event pairs, 185 based on Foata normal form. 20/632 useless extension candidates. Maximal degree in co-relation 2483. Up to 434 conditions per place. [2024-11-28 05:04:34,910 INFO L140 encePairwiseOnDemand]: 25/34 looper letters, 49 selfloop transitions, 12 changer transitions 0/62 dead transitions. [2024-11-28 05:04:34,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 62 transitions, 520 flow [2024-11-28 05:04:34,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 05:04:34,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-28 05:04:34,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 65 transitions. [2024-11-28 05:04:34,911 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.27310924369747897 [2024-11-28 05:04:34,911 INFO L175 Difference]: Start difference. First operand has 66 places, 56 transitions, 376 flow. Second operand 7 states and 65 transitions. [2024-11-28 05:04:34,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 62 transitions, 520 flow [2024-11-28 05:04:34,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 62 transitions, 495 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-11-28 05:04:34,916 INFO L231 Difference]: Finished difference. Result has 63 places, 49 transitions, 338 flow [2024-11-28 05:04:34,917 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=338, PETRI_PLACES=63, PETRI_TRANSITIONS=49} [2024-11-28 05:04:34,917 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 33 predicate places. [2024-11-28 05:04:34,917 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 49 transitions, 338 flow [2024-11-28 05:04:34,917 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:04:34,917 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:04:34,917 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:04:34,925 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-28 05:04:35,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:04:35,121 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 05:04:35,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:04:35,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1095495598, now seen corresponding path program 1 times [2024-11-28 05:04:35,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:04:35,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631403094] [2024-11-28 05:04:35,121 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:04:35,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:04:35,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:04:36,351 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:04:36,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:04:36,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631403094] [2024-11-28 05:04:36,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631403094] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:04:36,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196389413] [2024-11-28 05:04:36,352 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:04:36,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:04:36,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:04:36,355 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:04:36,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 05:04:36,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:04:36,467 INFO L256 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-28 05:04:36,469 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:04:37,085 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-11-28 05:04:37,086 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 52 [2024-11-28 05:04:37,217 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:04:37,217 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:04:37,811 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-11-28 05:04:37,811 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 87 treesize of output 63 [2024-11-28 05:04:37,893 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:04:37,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [196389413] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 05:04:37,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:04:37,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13, 13] total 33 [2024-11-28 05:04:37,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406598381] [2024-11-28 05:04:37,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:04:37,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 05:04:37,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:04:37,894 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 05:04:37,895 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=955, Unknown=0, NotChecked=0, Total=1056 [2024-11-28 05:04:37,895 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-28 05:04:37,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 49 transitions, 338 flow. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:04:37,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:04:37,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-28 05:04:37,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:04:39,177 INFO L124 PetriNetUnfolderBase]: 559/952 cut-off events. [2024-11-28 05:04:39,177 INFO L125 PetriNetUnfolderBase]: For 2008/2008 co-relation queries the response was YES. [2024-11-28 05:04:39,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3883 conditions, 952 events. 559/952 cut-off events. For 2008/2008 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 4117 event pairs, 89 based on Foata normal form. 1/952 useless extension candidates. Maximal degree in co-relation 3864. Up to 383 conditions per place. [2024-11-28 05:04:39,181 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 109 selfloop transitions, 32 changer transitions 10/152 dead transitions. [2024-11-28 05:04:39,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 152 transitions, 1179 flow [2024-11-28 05:04:39,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 05:04:39,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-28 05:04:39,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 176 transitions. [2024-11-28 05:04:39,182 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3697478991596639 [2024-11-28 05:04:39,182 INFO L175 Difference]: Start difference. First operand has 63 places, 49 transitions, 338 flow. Second operand 14 states and 176 transitions. [2024-11-28 05:04:39,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 152 transitions, 1179 flow [2024-11-28 05:04:39,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 152 transitions, 1159 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-28 05:04:39,189 INFO L231 Difference]: Finished difference. Result has 80 places, 68 transitions, 619 flow [2024-11-28 05:04:39,189 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=619, PETRI_PLACES=80, PETRI_TRANSITIONS=68} [2024-11-28 05:04:39,190 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 50 predicate places. [2024-11-28 05:04:39,190 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 68 transitions, 619 flow [2024-11-28 05:04:39,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:04:39,190 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:04:39,190 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:04:39,198 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 05:04:39,394 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-28 05:04:39,395 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 05:04:39,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:04:39,395 INFO L85 PathProgramCache]: Analyzing trace with hash -983185198, now seen corresponding path program 2 times [2024-11-28 05:04:39,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:04:39,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062353416] [2024-11-28 05:04:39,395 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:04:39,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:04:39,423 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 05:04:39,424 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:04:39,984 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:04:39,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:04:39,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062353416] [2024-11-28 05:04:39,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062353416] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:04:39,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:04:39,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-28 05:04:39,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48034927] [2024-11-28 05:04:39,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:04:39,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 05:04:39,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:04:39,986 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 05:04:39,986 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-11-28 05:04:39,986 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-28 05:04:39,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 68 transitions, 619 flow. Second operand has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:04:39,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:04:39,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-28 05:04:39,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:04:40,473 INFO L124 PetriNetUnfolderBase]: 648/1092 cut-off events. [2024-11-28 05:04:40,473 INFO L125 PetriNetUnfolderBase]: For 4957/4957 co-relation queries the response was YES. [2024-11-28 05:04:40,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5333 conditions, 1092 events. 648/1092 cut-off events. For 4957/4957 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4847 event pairs, 306 based on Foata normal form. 1/1092 useless extension candidates. Maximal degree in co-relation 5305. Up to 776 conditions per place. [2024-11-28 05:04:40,477 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 83 selfloop transitions, 31 changer transitions 17/132 dead transitions. [2024-11-28 05:04:40,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 132 transitions, 1423 flow [2024-11-28 05:04:40,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 05:04:40,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-28 05:04:40,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 127 transitions. [2024-11-28 05:04:40,478 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2873303167420814 [2024-11-28 05:04:40,479 INFO L175 Difference]: Start difference. First operand has 80 places, 68 transitions, 619 flow. Second operand 13 states and 127 transitions. [2024-11-28 05:04:40,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 132 transitions, 1423 flow [2024-11-28 05:04:40,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 132 transitions, 1342 flow, removed 30 selfloop flow, removed 4 redundant places. [2024-11-28 05:04:40,488 INFO L231 Difference]: Finished difference. Result has 92 places, 89 transitions, 957 flow [2024-11-28 05:04:40,489 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=564, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=957, PETRI_PLACES=92, PETRI_TRANSITIONS=89} [2024-11-28 05:04:40,489 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 62 predicate places. [2024-11-28 05:04:40,489 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 89 transitions, 957 flow [2024-11-28 05:04:40,489 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:04:40,489 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:04:40,489 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:04:40,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-28 05:04:40,490 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 05:04:40,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:04:40,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1745139792, now seen corresponding path program 3 times [2024-11-28 05:04:40,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:04:40,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979384583] [2024-11-28 05:04:40,490 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 05:04:40,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:04:40,534 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-28 05:04:40,534 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:04:41,181 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:04:41,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:04:41,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979384583] [2024-11-28 05:04:41,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979384583] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:04:41,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:04:41,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-28 05:04:41,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95460348] [2024-11-28 05:04:41,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:04:41,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 05:04:41,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:04:41,183 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 05:04:41,183 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-11-28 05:04:41,183 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-28 05:04:41,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 89 transitions, 957 flow. Second operand has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:04:41,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:04:41,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-28 05:04:41,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:04:41,965 INFO L124 PetriNetUnfolderBase]: 633/1070 cut-off events. [2024-11-28 05:04:41,965 INFO L125 PetriNetUnfolderBase]: For 5423/5423 co-relation queries the response was YES. [2024-11-28 05:04:41,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5435 conditions, 1070 events. 633/1070 cut-off events. For 5423/5423 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 4774 event pairs, 235 based on Foata normal form. 1/1071 useless extension candidates. Maximal degree in co-relation 5404. Up to 566 conditions per place. [2024-11-28 05:04:41,973 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 107 selfloop transitions, 27 changer transitions 18/153 dead transitions. [2024-11-28 05:04:41,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 153 transitions, 1622 flow [2024-11-28 05:04:41,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 05:04:41,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-28 05:04:41,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 146 transitions. [2024-11-28 05:04:41,975 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.28627450980392155 [2024-11-28 05:04:41,976 INFO L175 Difference]: Start difference. First operand has 92 places, 89 transitions, 957 flow. Second operand 15 states and 146 transitions. [2024-11-28 05:04:41,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 153 transitions, 1622 flow [2024-11-28 05:04:41,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 153 transitions, 1517 flow, removed 51 selfloop flow, removed 3 redundant places. [2024-11-28 05:04:41,990 INFO L231 Difference]: Finished difference. Result has 104 places, 89 transitions, 936 flow [2024-11-28 05:04:41,990 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=872, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=936, PETRI_PLACES=104, PETRI_TRANSITIONS=89} [2024-11-28 05:04:41,990 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 74 predicate places. [2024-11-28 05:04:41,991 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 89 transitions, 936 flow [2024-11-28 05:04:41,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:04:41,991 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:04:41,991 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:04:41,991 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-28 05:04:41,991 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 05:04:41,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:04:41,991 INFO L85 PathProgramCache]: Analyzing trace with hash -971641578, now seen corresponding path program 4 times [2024-11-28 05:04:41,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:04:41,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287154045] [2024-11-28 05:04:41,992 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 05:04:41,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:04:42,012 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 05:04:42,012 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:04:42,428 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:04:42,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:04:42,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287154045] [2024-11-28 05:04:42,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287154045] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:04:42,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:04:42,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 05:04:42,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896651292] [2024-11-28 05:04:42,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:04:42,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 05:04:42,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:04:42,429 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 05:04:42,430 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-28 05:04:42,430 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-28 05:04:42,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 89 transitions, 936 flow. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:04:42,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:04:42,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-28 05:04:42,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:04:43,143 INFO L124 PetriNetUnfolderBase]: 641/1088 cut-off events. [2024-11-28 05:04:43,143 INFO L125 PetriNetUnfolderBase]: For 5676/5676 co-relation queries the response was YES. [2024-11-28 05:04:43,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5680 conditions, 1088 events. 641/1088 cut-off events. For 5676/5676 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4898 event pairs, 290 based on Foata normal form. 1/1089 useless extension candidates. Maximal degree in co-relation 5645. Up to 786 conditions per place. [2024-11-28 05:04:43,150 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 97 selfloop transitions, 29 changer transitions 17/144 dead transitions. [2024-11-28 05:04:43,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 144 transitions, 1652 flow [2024-11-28 05:04:43,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 05:04:43,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-28 05:04:43,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-11-28 05:04:43,151 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3315508021390374 [2024-11-28 05:04:43,151 INFO L175 Difference]: Start difference. First operand has 104 places, 89 transitions, 936 flow. Second operand 11 states and 124 transitions. [2024-11-28 05:04:43,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 144 transitions, 1652 flow [2024-11-28 05:04:43,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 144 transitions, 1557 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-11-28 05:04:43,164 INFO L231 Difference]: Finished difference. Result has 108 places, 98 transitions, 1108 flow [2024-11-28 05:04:43,164 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=871, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1108, PETRI_PLACES=108, PETRI_TRANSITIONS=98} [2024-11-28 05:04:43,165 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 78 predicate places. [2024-11-28 05:04:43,165 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 98 transitions, 1108 flow [2024-11-28 05:04:43,165 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:04:43,165 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:04:43,165 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:04:43,165 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-28 05:04:43,165 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 05:04:43,166 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:04:43,166 INFO L85 PathProgramCache]: Analyzing trace with hash -742962710, now seen corresponding path program 5 times [2024-11-28 05:04:43,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:04:43,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061124858] [2024-11-28 05:04:43,166 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 05:04:43,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:04:43,191 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 05:04:43,191 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:04:43,980 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:04:43,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:04:43,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061124858] [2024-11-28 05:04:43,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061124858] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:04:43,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1478529037] [2024-11-28 05:04:43,981 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 05:04:43,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:04:43,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:04:43,984 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:04:43,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 05:04:44,084 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 05:04:44,084 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:04:44,086 INFO L256 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-28 05:04:44,088 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:04:44,606 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-28 05:04:44,606 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 47 [2024-11-28 05:04:44,790 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:04:44,790 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:04:45,575 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-11-28 05:04:45,575 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 87 treesize of output 63 [2024-11-28 05:04:45,646 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:04:45,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1478529037] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 05:04:45,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:04:45,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [12, 13] total 32 [2024-11-28 05:04:45,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597878940] [2024-11-28 05:04:45,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:04:45,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 05:04:45,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:04:45,647 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 05:04:45,647 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=863, Unknown=0, NotChecked=0, Total=992 [2024-11-28 05:04:45,647 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-28 05:04:45,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 98 transitions, 1108 flow. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:04:45,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:04:45,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-28 05:04:45,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:04:47,072 INFO L124 PetriNetUnfolderBase]: 648/1122 cut-off events. [2024-11-28 05:04:47,072 INFO L125 PetriNetUnfolderBase]: For 6190/6190 co-relation queries the response was YES. [2024-11-28 05:04:47,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5893 conditions, 1122 events. 648/1122 cut-off events. For 6190/6190 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 5167 event pairs, 107 based on Foata normal form. 1/1122 useless extension candidates. Maximal degree in co-relation 5853. Up to 618 conditions per place. [2024-11-28 05:04:47,077 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 115 selfloop transitions, 47 changer transitions 9/172 dead transitions. [2024-11-28 05:04:47,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 172 transitions, 1853 flow [2024-11-28 05:04:47,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 05:04:47,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-28 05:04:47,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 183 transitions. [2024-11-28 05:04:47,079 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3166089965397924 [2024-11-28 05:04:47,079 INFO L175 Difference]: Start difference. First operand has 108 places, 98 transitions, 1108 flow. Second operand 17 states and 183 transitions. [2024-11-28 05:04:47,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 172 transitions, 1853 flow [2024-11-28 05:04:47,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 172 transitions, 1787 flow, removed 24 selfloop flow, removed 3 redundant places. [2024-11-28 05:04:47,094 INFO L231 Difference]: Finished difference. Result has 119 places, 102 transitions, 1217 flow [2024-11-28 05:04:47,094 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1053, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1217, PETRI_PLACES=119, PETRI_TRANSITIONS=102} [2024-11-28 05:04:47,095 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 89 predicate places. [2024-11-28 05:04:47,095 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 102 transitions, 1217 flow [2024-11-28 05:04:47,095 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:04:47,095 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:04:47,095 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:04:47,101 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-28 05:04:47,295 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-28 05:04:47,295 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 05:04:47,296 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:04:47,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1503763318, now seen corresponding path program 6 times [2024-11-28 05:04:47,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:04:47,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027458839] [2024-11-28 05:04:47,296 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 05:04:47,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:04:47,312 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-28 05:04:47,312 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:04:47,806 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:04:47,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:04:47,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027458839] [2024-11-28 05:04:47,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027458839] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:04:47,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:04:47,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-28 05:04:47,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610817076] [2024-11-28 05:04:47,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:04:47,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 05:04:47,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:04:47,808 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 05:04:47,808 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-11-28 05:04:47,808 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-28 05:04:47,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 102 transitions, 1217 flow. Second operand has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:04:47,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:04:47,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-28 05:04:47,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:04:48,380 INFO L124 PetriNetUnfolderBase]: 658/1138 cut-off events. [2024-11-28 05:04:48,380 INFO L125 PetriNetUnfolderBase]: For 6477/6477 co-relation queries the response was YES. [2024-11-28 05:04:48,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6063 conditions, 1138 events. 658/1138 cut-off events. For 6477/6477 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 5292 event pairs, 309 based on Foata normal form. 2/1139 useless extension candidates. Maximal degree in co-relation 6023. Up to 816 conditions per place. [2024-11-28 05:04:48,389 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 85 selfloop transitions, 45 changer transitions 9/140 dead transitions. [2024-11-28 05:04:48,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 140 transitions, 1826 flow [2024-11-28 05:04:48,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 05:04:48,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-28 05:04:48,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 115 transitions. [2024-11-28 05:04:48,391 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2818627450980392 [2024-11-28 05:04:48,392 INFO L175 Difference]: Start difference. First operand has 119 places, 102 transitions, 1217 flow. Second operand 12 states and 115 transitions. [2024-11-28 05:04:48,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 140 transitions, 1826 flow [2024-11-28 05:04:48,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 140 transitions, 1690 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-11-28 05:04:48,415 INFO L231 Difference]: Finished difference. Result has 123 places, 108 transitions, 1330 flow [2024-11-28 05:04:48,415 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1107, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1330, PETRI_PLACES=123, PETRI_TRANSITIONS=108} [2024-11-28 05:04:48,415 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 93 predicate places. [2024-11-28 05:04:48,415 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 108 transitions, 1330 flow [2024-11-28 05:04:48,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:04:48,416 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:04:48,416 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:04:48,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-28 05:04:48,417 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 05:04:48,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:04:48,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1144649400, now seen corresponding path program 7 times [2024-11-28 05:04:48,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:04:48,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199132659] [2024-11-28 05:04:48,418 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 05:04:48,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:04:48,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:04:49,268 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:04:49,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:04:49,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199132659] [2024-11-28 05:04:49,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199132659] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:04:49,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781759191] [2024-11-28 05:04:49,268 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 05:04:49,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:04:49,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:04:49,271 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:04:49,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 05:04:49,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:04:49,372 INFO L256 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-28 05:04:49,374 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:04:49,720 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-11-28 05:04:49,721 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 52 [2024-11-28 05:04:49,881 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:04:49,881 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:04:50,474 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-11-28 05:04:50,474 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 103 treesize of output 71 [2024-11-28 05:04:50,582 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:04:50,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1781759191] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 05:04:50,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:04:50,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13, 13] total 33 [2024-11-28 05:04:50,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341939967] [2024-11-28 05:04:50,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:04:50,584 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 05:04:50,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:04:50,584 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 05:04:50,585 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=933, Unknown=0, NotChecked=0, Total=1056 [2024-11-28 05:04:50,585 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-28 05:04:50,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 108 transitions, 1330 flow. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:04:50,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:04:50,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-28 05:04:50,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:04:51,604 INFO L124 PetriNetUnfolderBase]: 635/1094 cut-off events. [2024-11-28 05:04:51,604 INFO L125 PetriNetUnfolderBase]: For 6138/6138 co-relation queries the response was YES. [2024-11-28 05:04:51,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5867 conditions, 1094 events. 635/1094 cut-off events. For 6138/6138 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 4983 event pairs, 110 based on Foata normal form. 2/1096 useless extension candidates. Maximal degree in co-relation 5825. Up to 610 conditions per place. [2024-11-28 05:04:51,609 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 85 selfloop transitions, 56 changer transitions 15/157 dead transitions. [2024-11-28 05:04:51,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 157 transitions, 1916 flow [2024-11-28 05:04:51,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 05:04:51,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-28 05:04:51,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 153 transitions. [2024-11-28 05:04:51,610 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.32142857142857145 [2024-11-28 05:04:51,610 INFO L175 Difference]: Start difference. First operand has 123 places, 108 transitions, 1330 flow. Second operand 14 states and 153 transitions. [2024-11-28 05:04:51,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 157 transitions, 1916 flow [2024-11-28 05:04:51,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 157 transitions, 1856 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-11-28 05:04:51,624 INFO L231 Difference]: Finished difference. Result has 130 places, 105 transitions, 1352 flow [2024-11-28 05:04:51,624 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1280, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1352, PETRI_PLACES=130, PETRI_TRANSITIONS=105} [2024-11-28 05:04:51,625 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 100 predicate places. [2024-11-28 05:04:51,625 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 105 transitions, 1352 flow [2024-11-28 05:04:51,625 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:04:51,625 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:04:51,625 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:04:51,632 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-28 05:04:51,825 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-28 05:04:51,826 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 05:04:51,826 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:04:51,826 INFO L85 PathProgramCache]: Analyzing trace with hash -2020528746, now seen corresponding path program 8 times [2024-11-28 05:04:51,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:04:51,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647121475] [2024-11-28 05:04:51,826 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:04:51,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:04:51,856 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 05:04:51,859 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:04:52,342 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:04:52,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:04:52,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647121475] [2024-11-28 05:04:52,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647121475] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:04:52,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:04:52,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-28 05:04:52,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452079093] [2024-11-28 05:04:52,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:04:52,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 05:04:52,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:04:52,343 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 05:04:52,343 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-11-28 05:04:52,343 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-28 05:04:52,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 105 transitions, 1352 flow. Second operand has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:04:52,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:04:52,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-28 05:04:52,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:04:52,787 INFO L124 PetriNetUnfolderBase]: 755/1266 cut-off events. [2024-11-28 05:04:52,787 INFO L125 PetriNetUnfolderBase]: For 8379/8379 co-relation queries the response was YES. [2024-11-28 05:04:52,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7223 conditions, 1266 events. 755/1266 cut-off events. For 8379/8379 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 5726 event pairs, 306 based on Foata normal form. 1/1266 useless extension candidates. Maximal degree in co-relation 7182. Up to 844 conditions per place. [2024-11-28 05:04:52,794 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 114 selfloop transitions, 40 changer transitions 15/170 dead transitions. [2024-11-28 05:04:52,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 170 transitions, 2357 flow [2024-11-28 05:04:52,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 05:04:52,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-28 05:04:52,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 118 transitions. [2024-11-28 05:04:52,795 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.28921568627450983 [2024-11-28 05:04:52,795 INFO L175 Difference]: Start difference. First operand has 130 places, 105 transitions, 1352 flow. Second operand 12 states and 118 transitions. [2024-11-28 05:04:52,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 170 transitions, 2357 flow [2024-11-28 05:04:52,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 170 transitions, 2187 flow, removed 13 selfloop flow, removed 10 redundant places. [2024-11-28 05:04:52,815 INFO L231 Difference]: Finished difference. Result has 130 places, 124 transitions, 1641 flow [2024-11-28 05:04:52,815 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1218, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1641, PETRI_PLACES=130, PETRI_TRANSITIONS=124} [2024-11-28 05:04:52,815 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 100 predicate places. [2024-11-28 05:04:52,815 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 124 transitions, 1641 flow [2024-11-28 05:04:52,815 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:04:52,815 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:04:52,816 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:04:52,816 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-28 05:04:52,816 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 05:04:52,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:04:52,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1152525450, now seen corresponding path program 9 times [2024-11-28 05:04:52,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:04:52,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052085301] [2024-11-28 05:04:52,817 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 05:04:52,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:04:52,838 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-28 05:04:52,838 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:04:53,354 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:04:53,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:04:53,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052085301] [2024-11-28 05:04:53,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052085301] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:04:53,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:04:53,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-28 05:04:53,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128828051] [2024-11-28 05:04:53,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:04:53,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 05:04:53,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:04:53,356 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 05:04:53,356 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-11-28 05:04:53,356 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-28 05:04:53,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 124 transitions, 1641 flow. Second operand has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:04:53,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:04:53,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-28 05:04:53,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:04:54,059 INFO L124 PetriNetUnfolderBase]: 794/1329 cut-off events. [2024-11-28 05:04:54,059 INFO L125 PetriNetUnfolderBase]: For 10635/10635 co-relation queries the response was YES. [2024-11-28 05:04:54,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7948 conditions, 1329 events. 794/1329 cut-off events. For 10635/10635 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 6117 event pairs, 298 based on Foata normal form. 1/1330 useless extension candidates. Maximal degree in co-relation 7902. Up to 865 conditions per place. [2024-11-28 05:04:54,066 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 136 selfloop transitions, 56 changer transitions 10/203 dead transitions. [2024-11-28 05:04:54,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 203 transitions, 2922 flow [2024-11-28 05:04:54,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 05:04:54,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-28 05:04:54,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 125 transitions. [2024-11-28 05:04:54,067 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2828054298642534 [2024-11-28 05:04:54,067 INFO L175 Difference]: Start difference. First operand has 130 places, 124 transitions, 1641 flow. Second operand 13 states and 125 transitions. [2024-11-28 05:04:54,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 203 transitions, 2922 flow [2024-11-28 05:04:54,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 203 transitions, 2755 flow, removed 82 selfloop flow, removed 4 redundant places. [2024-11-28 05:04:54,096 INFO L231 Difference]: Finished difference. Result has 142 places, 143 transitions, 2036 flow [2024-11-28 05:04:54,096 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1568, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2036, PETRI_PLACES=142, PETRI_TRANSITIONS=143} [2024-11-28 05:04:54,096 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 112 predicate places. [2024-11-28 05:04:54,096 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 143 transitions, 2036 flow [2024-11-28 05:04:54,097 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:04:54,097 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:04:54,097 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:04:54,097 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-28 05:04:54,097 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 05:04:54,097 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:04:54,097 INFO L85 PathProgramCache]: Analyzing trace with hash -458308662, now seen corresponding path program 10 times [2024-11-28 05:04:54,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:04:54,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622116546] [2024-11-28 05:04:54,098 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 05:04:54,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:04:54,118 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 05:04:54,118 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:04:54,518 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:04:54,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:04:54,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622116546] [2024-11-28 05:04:54,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622116546] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:04:54,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:04:54,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 05:04:54,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082797623] [2024-11-28 05:04:54,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:04:54,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 05:04:54,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:04:54,519 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 05:04:54,519 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-28 05:04:54,520 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-28 05:04:54,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 143 transitions, 2036 flow. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:04:54,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:04:54,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-28 05:04:54,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:04:54,956 INFO L124 PetriNetUnfolderBase]: 824/1385 cut-off events. [2024-11-28 05:04:54,956 INFO L125 PetriNetUnfolderBase]: For 11376/11376 co-relation queries the response was YES. [2024-11-28 05:04:54,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8569 conditions, 1385 events. 824/1385 cut-off events. For 11376/11376 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 6507 event pairs, 319 based on Foata normal form. 1/1386 useless extension candidates. Maximal degree in co-relation 8518. Up to 896 conditions per place. [2024-11-28 05:04:54,963 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 117 selfloop transitions, 59 changer transitions 20/197 dead transitions. [2024-11-28 05:04:54,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 197 transitions, 2961 flow [2024-11-28 05:04:54,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 05:04:54,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-28 05:04:54,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 113 transitions. [2024-11-28 05:04:54,964 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.30213903743315507 [2024-11-28 05:04:54,964 INFO L175 Difference]: Start difference. First operand has 142 places, 143 transitions, 2036 flow. Second operand 11 states and 113 transitions. [2024-11-28 05:04:54,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 197 transitions, 2961 flow [2024-11-28 05:04:54,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 197 transitions, 2887 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-11-28 05:04:54,991 INFO L231 Difference]: Finished difference. Result has 150 places, 150 transitions, 2276 flow [2024-11-28 05:04:54,992 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1979, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2276, PETRI_PLACES=150, PETRI_TRANSITIONS=150} [2024-11-28 05:04:54,992 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 120 predicate places. [2024-11-28 05:04:54,992 INFO L471 AbstractCegarLoop]: Abstraction has has 150 places, 150 transitions, 2276 flow [2024-11-28 05:04:54,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:04:54,992 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:04:54,992 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:04:54,992 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-11-28 05:04:54,992 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 05:04:54,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:04:54,993 INFO L85 PathProgramCache]: Analyzing trace with hash -2059605178, now seen corresponding path program 11 times [2024-11-28 05:04:54,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:04:54,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182057958] [2024-11-28 05:04:54,993 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 05:04:54,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:04:55,012 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 05:04:55,012 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:04:56,022 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:04:56,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:04:56,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182057958] [2024-11-28 05:04:56,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182057958] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:04:56,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472081809] [2024-11-28 05:04:56,023 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 05:04:56,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:04:56,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:04:56,026 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:04:56,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 05:04:56,128 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 05:04:56,128 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:04:56,130 INFO L256 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-28 05:04:56,132 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:04:56,664 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-11-28 05:04:56,665 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 52 [2024-11-28 05:04:56,777 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:04:56,777 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:04:57,336 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-11-28 05:04:57,337 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 98 treesize of output 82 [2024-11-28 05:04:57,411 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:04:57,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [472081809] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 05:04:57,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:04:57,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [12, 13] total 32 [2024-11-28 05:04:57,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954687373] [2024-11-28 05:04:57,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:04:57,412 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 05:04:57,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:04:57,412 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 05:04:57,413 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=887, Unknown=0, NotChecked=0, Total=992 [2024-11-28 05:04:57,413 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-28 05:04:57,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 150 transitions, 2276 flow. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:04:57,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:04:57,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-28 05:04:57,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:04:59,096 INFO L124 PetriNetUnfolderBase]: 882/1517 cut-off events. [2024-11-28 05:04:59,096 INFO L125 PetriNetUnfolderBase]: For 13681/13681 co-relation queries the response was YES. [2024-11-28 05:04:59,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9167 conditions, 1517 events. 882/1517 cut-off events. For 13681/13681 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 7436 event pairs, 132 based on Foata normal form. 1/1517 useless extension candidates. Maximal degree in co-relation 9113. Up to 573 conditions per place. [2024-11-28 05:04:59,105 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 138 selfloop transitions, 84 changer transitions 9/232 dead transitions. [2024-11-28 05:04:59,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 232 transitions, 3432 flow [2024-11-28 05:04:59,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-28 05:04:59,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-28 05:04:59,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 166 transitions. [2024-11-28 05:04:59,106 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.30514705882352944 [2024-11-28 05:04:59,106 INFO L175 Difference]: Start difference. First operand has 150 places, 150 transitions, 2276 flow. Second operand 16 states and 166 transitions. [2024-11-28 05:04:59,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 232 transitions, 3432 flow [2024-11-28 05:04:59,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 232 transitions, 3268 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-11-28 05:04:59,138 INFO L231 Difference]: Finished difference. Result has 164 places, 166 transitions, 2627 flow [2024-11-28 05:04:59,139 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2133, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2627, PETRI_PLACES=164, PETRI_TRANSITIONS=166} [2024-11-28 05:04:59,139 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 134 predicate places. [2024-11-28 05:04:59,139 INFO L471 AbstractCegarLoop]: Abstraction has has 164 places, 166 transitions, 2627 flow [2024-11-28 05:04:59,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:04:59,139 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:04:59,139 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:04:59,146 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-28 05:04:59,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-11-28 05:04:59,340 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 05:04:59,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:04:59,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1018045434, now seen corresponding path program 12 times [2024-11-28 05:04:59,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:04:59,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930085729] [2024-11-28 05:04:59,340 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 05:04:59,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:04:59,355 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-28 05:04:59,355 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:04:59,883 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:04:59,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:04:59,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930085729] [2024-11-28 05:04:59,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930085729] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:04:59,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:04:59,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-28 05:04:59,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531288231] [2024-11-28 05:04:59,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:04:59,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 05:04:59,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:04:59,884 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 05:04:59,884 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-11-28 05:04:59,884 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-28 05:04:59,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 166 transitions, 2627 flow. Second operand has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:04:59,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:04:59,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-28 05:04:59,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:05:00,593 INFO L124 PetriNetUnfolderBase]: 890/1533 cut-off events. [2024-11-28 05:05:00,593 INFO L125 PetriNetUnfolderBase]: For 14392/14392 co-relation queries the response was YES. [2024-11-28 05:05:00,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9467 conditions, 1533 events. 890/1533 cut-off events. For 14392/14392 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 7514 event pairs, 369 based on Foata normal form. 1/1533 useless extension candidates. Maximal degree in co-relation 9407. Up to 1027 conditions per place. [2024-11-28 05:05:00,602 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 121 selfloop transitions, 71 changer transitions 10/203 dead transitions. [2024-11-28 05:05:00,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 203 transitions, 3272 flow [2024-11-28 05:05:00,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 05:05:00,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-28 05:05:00,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 125 transitions. [2024-11-28 05:05:00,603 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.26260504201680673 [2024-11-28 05:05:00,603 INFO L175 Difference]: Start difference. First operand has 164 places, 166 transitions, 2627 flow. Second operand 14 states and 125 transitions. [2024-11-28 05:05:00,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 203 transitions, 3272 flow [2024-11-28 05:05:00,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 203 transitions, 3180 flow, removed 33 selfloop flow, removed 4 redundant places. [2024-11-28 05:05:00,642 INFO L231 Difference]: Finished difference. Result has 175 places, 168 transitions, 2749 flow [2024-11-28 05:05:00,642 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2538, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2749, PETRI_PLACES=175, PETRI_TRANSITIONS=168} [2024-11-28 05:05:00,642 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 145 predicate places. [2024-11-28 05:05:00,642 INFO L471 AbstractCegarLoop]: Abstraction has has 175 places, 168 transitions, 2749 flow [2024-11-28 05:05:00,642 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:00,642 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:05:00,643 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:05:00,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-11-28 05:05:00,643 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 05:05:00,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:05:00,643 INFO L85 PathProgramCache]: Analyzing trace with hash -3782522, now seen corresponding path program 13 times [2024-11-28 05:05:00,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:05:00,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568819450] [2024-11-28 05:05:00,644 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 05:05:00,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:05:00,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:05:01,600 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:05:01,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:05:01,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568819450] [2024-11-28 05:05:01,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568819450] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:05:01,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72353670] [2024-11-28 05:05:01,600 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 05:05:01,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:05:01,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:05:01,603 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:05:01,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 05:05:01,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:05:01,704 INFO L256 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-28 05:05:01,706 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:05:02,247 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-11-28 05:05:02,248 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 52 [2024-11-28 05:05:02,350 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:05:02,350 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:05:02,977 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-11-28 05:05:02,977 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 98 treesize of output 82 [2024-11-28 05:05:03,053 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:05:03,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [72353670] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 05:05:03,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:05:03,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13, 13] total 33 [2024-11-28 05:05:03,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593234351] [2024-11-28 05:05:03,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:05:03,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 05:05:03,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:05:03,054 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 05:05:03,054 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=946, Unknown=0, NotChecked=0, Total=1056 [2024-11-28 05:05:03,054 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-28 05:05:03,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 168 transitions, 2749 flow. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:03,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:05:03,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-28 05:05:03,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:05:04,636 INFO L124 PetriNetUnfolderBase]: 896/1547 cut-off events. [2024-11-28 05:05:04,636 INFO L125 PetriNetUnfolderBase]: For 14890/14890 co-relation queries the response was YES. [2024-11-28 05:05:04,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9616 conditions, 1547 events. 896/1547 cut-off events. For 14890/14890 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 7683 event pairs, 125 based on Foata normal form. 1/1548 useless extension candidates. Maximal degree in co-relation 9554. Up to 573 conditions per place. [2024-11-28 05:05:04,645 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 137 selfloop transitions, 87 changer transitions 9/234 dead transitions. [2024-11-28 05:05:04,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 234 transitions, 3696 flow [2024-11-28 05:05:04,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 05:05:04,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-28 05:05:04,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 163 transitions. [2024-11-28 05:05:04,646 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3196078431372549 [2024-11-28 05:05:04,646 INFO L175 Difference]: Start difference. First operand has 175 places, 168 transitions, 2749 flow. Second operand 15 states and 163 transitions. [2024-11-28 05:05:04,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 234 transitions, 3696 flow [2024-11-28 05:05:04,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 234 transitions, 3597 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-11-28 05:05:04,690 INFO L231 Difference]: Finished difference. Result has 182 places, 173 transitions, 2962 flow [2024-11-28 05:05:04,690 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2658, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2962, PETRI_PLACES=182, PETRI_TRANSITIONS=173} [2024-11-28 05:05:04,691 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 152 predicate places. [2024-11-28 05:05:04,691 INFO L471 AbstractCegarLoop]: Abstraction has has 182 places, 173 transitions, 2962 flow [2024-11-28 05:05:04,691 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:04,691 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:05:04,691 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:05:04,701 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-28 05:05:04,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-11-28 05:05:04,891 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 05:05:04,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:05:04,892 INFO L85 PathProgramCache]: Analyzing trace with hash -756341268, now seen corresponding path program 14 times [2024-11-28 05:05:04,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:05:04,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275887417] [2024-11-28 05:05:04,892 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:05:04,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:05:04,912 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 05:05:04,912 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:05:05,350 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:05:05,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:05:05,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275887417] [2024-11-28 05:05:05,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275887417] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:05:05,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:05:05,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-28 05:05:05,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075865321] [2024-11-28 05:05:05,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:05:05,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 05:05:05,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:05:05,351 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 05:05:05,351 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-11-28 05:05:05,351 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-28 05:05:05,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 173 transitions, 2962 flow. Second operand has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:05,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:05:05,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-28 05:05:05,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:05:05,827 INFO L124 PetriNetUnfolderBase]: 888/1535 cut-off events. [2024-11-28 05:05:05,827 INFO L125 PetriNetUnfolderBase]: For 15457/15457 co-relation queries the response was YES. [2024-11-28 05:05:05,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9645 conditions, 1535 events. 888/1535 cut-off events. For 15457/15457 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 7571 event pairs, 379 based on Foata normal form. 1/1535 useless extension candidates. Maximal degree in co-relation 9585. Up to 1060 conditions per place. [2024-11-28 05:05:05,837 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 130 selfloop transitions, 64 changer transitions 12/207 dead transitions. [2024-11-28 05:05:05,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 207 transitions, 3610 flow [2024-11-28 05:05:05,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 05:05:05,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-28 05:05:05,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 115 transitions. [2024-11-28 05:05:05,838 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2818627450980392 [2024-11-28 05:05:05,838 INFO L175 Difference]: Start difference. First operand has 182 places, 173 transitions, 2962 flow. Second operand 12 states and 115 transitions. [2024-11-28 05:05:05,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 207 transitions, 3610 flow [2024-11-28 05:05:05,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 207 transitions, 3412 flow, removed 18 selfloop flow, removed 10 redundant places. [2024-11-28 05:05:05,883 INFO L231 Difference]: Finished difference. Result has 183 places, 173 transitions, 2922 flow [2024-11-28 05:05:05,883 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2766, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2922, PETRI_PLACES=183, PETRI_TRANSITIONS=173} [2024-11-28 05:05:05,883 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 153 predicate places. [2024-11-28 05:05:05,883 INFO L471 AbstractCegarLoop]: Abstraction has has 183 places, 173 transitions, 2922 flow [2024-11-28 05:05:05,883 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:05,883 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:05:05,884 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:05:05,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-11-28 05:05:05,884 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 05:05:05,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:05:05,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1679296160, now seen corresponding path program 15 times [2024-11-28 05:05:05,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:05:05,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527497952] [2024-11-28 05:05:05,884 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 05:05:05,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:05:05,902 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-28 05:05:05,902 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:05:06,442 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:05:06,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:05:06,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527497952] [2024-11-28 05:05:06,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527497952] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:05:06,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:05:06,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-28 05:05:06,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070818076] [2024-11-28 05:05:06,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:05:06,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 05:05:06,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:05:06,445 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 05:05:06,445 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-11-28 05:05:06,445 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-28 05:05:06,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 173 transitions, 2922 flow. Second operand has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:06,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:05:06,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-28 05:05:06,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:05:07,154 INFO L124 PetriNetUnfolderBase]: 880/1520 cut-off events. [2024-11-28 05:05:07,155 INFO L125 PetriNetUnfolderBase]: For 14615/14615 co-relation queries the response was YES. [2024-11-28 05:05:07,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9466 conditions, 1520 events. 880/1520 cut-off events. For 14615/14615 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 7478 event pairs, 300 based on Foata normal form. 1/1521 useless extension candidates. Maximal degree in co-relation 9405. Up to 787 conditions per place. [2024-11-28 05:05:07,164 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 143 selfloop transitions, 61 changer transitions 18/223 dead transitions. [2024-11-28 05:05:07,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 223 transitions, 3628 flow [2024-11-28 05:05:07,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 05:05:07,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-28 05:05:07,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 140 transitions. [2024-11-28 05:05:07,165 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.27450980392156865 [2024-11-28 05:05:07,166 INFO L175 Difference]: Start difference. First operand has 183 places, 173 transitions, 2922 flow. Second operand 15 states and 140 transitions. [2024-11-28 05:05:07,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 223 transitions, 3628 flow [2024-11-28 05:05:07,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 223 transitions, 3504 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-11-28 05:05:07,211 INFO L231 Difference]: Finished difference. Result has 187 places, 167 transitions, 2820 flow [2024-11-28 05:05:07,211 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2800, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2820, PETRI_PLACES=187, PETRI_TRANSITIONS=167} [2024-11-28 05:05:07,212 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 157 predicate places. [2024-11-28 05:05:07,212 INFO L471 AbstractCegarLoop]: Abstraction has has 187 places, 167 transitions, 2820 flow [2024-11-28 05:05:07,212 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:07,212 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:05:07,212 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:05:07,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-11-28 05:05:07,213 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 05:05:07,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:05:07,213 INFO L85 PathProgramCache]: Analyzing trace with hash -686231232, now seen corresponding path program 16 times [2024-11-28 05:05:07,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:05:07,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138141636] [2024-11-28 05:05:07,214 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 05:05:07,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:05:07,235 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 05:05:07,235 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:05:07,676 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:05:07,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:05:07,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138141636] [2024-11-28 05:05:07,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138141636] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:05:07,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:05:07,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 05:05:07,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487352272] [2024-11-28 05:05:07,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:05:07,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 05:05:07,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:05:07,677 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 05:05:07,677 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-28 05:05:07,677 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-28 05:05:07,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 167 transitions, 2820 flow. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:07,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:05:07,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-28 05:05:07,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:05:08,334 INFO L124 PetriNetUnfolderBase]: 853/1465 cut-off events. [2024-11-28 05:05:08,334 INFO L125 PetriNetUnfolderBase]: For 13984/13984 co-relation queries the response was YES. [2024-11-28 05:05:08,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9154 conditions, 1465 events. 853/1465 cut-off events. For 13984/13984 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 7064 event pairs, 360 based on Foata normal form. 1/1466 useless extension candidates. Maximal degree in co-relation 9094. Up to 996 conditions per place. [2024-11-28 05:05:08,343 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 121 selfloop transitions, 62 changer transitions 12/196 dead transitions. [2024-11-28 05:05:08,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 196 transitions, 3329 flow [2024-11-28 05:05:08,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 05:05:08,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-28 05:05:08,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 111 transitions. [2024-11-28 05:05:08,344 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2967914438502674 [2024-11-28 05:05:08,344 INFO L175 Difference]: Start difference. First operand has 187 places, 167 transitions, 2820 flow. Second operand 11 states and 111 transitions. [2024-11-28 05:05:08,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 196 transitions, 3329 flow [2024-11-28 05:05:08,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 196 transitions, 3215 flow, removed 7 selfloop flow, removed 12 redundant places. [2024-11-28 05:05:08,383 INFO L231 Difference]: Finished difference. Result has 180 places, 164 transitions, 2780 flow [2024-11-28 05:05:08,383 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2706, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2780, PETRI_PLACES=180, PETRI_TRANSITIONS=164} [2024-11-28 05:05:08,383 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 150 predicate places. [2024-11-28 05:05:08,383 INFO L471 AbstractCegarLoop]: Abstraction has has 180 places, 164 transitions, 2780 flow [2024-11-28 05:05:08,383 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:08,383 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:05:08,384 INFO L206 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] [2024-11-28 05:05:08,384 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-11-28 05:05:08,384 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 05:05:08,384 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:05:08,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1538345530, now seen corresponding path program 1 times [2024-11-28 05:05:08,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:05:08,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115816835] [2024-11-28 05:05:08,384 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:05:08,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:05:08,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:05:08,621 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:05:08,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:05:08,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115816835] [2024-11-28 05:05:08,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115816835] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:05:08,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483581153] [2024-11-28 05:05:08,622 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:05:08,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:05:08,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:05:08,626 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:05:08,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-28 05:05:08,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:05:08,723 INFO L256 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-28 05:05:08,724 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:05:08,789 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-11-28 05:05:08,789 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2024-11-28 05:05:08,800 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:05:08,801 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:05:08,904 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-11-28 05:05:08,904 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 48 [2024-11-28 05:05:08,923 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:05:08,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1483581153] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:05:08,923 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:05:08,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 17 [2024-11-28 05:05:08,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856856006] [2024-11-28 05:05:08,923 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:05:08,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 05:05:08,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:05:08,924 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 05:05:08,924 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2024-11-28 05:05:08,924 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-28 05:05:08,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 164 transitions, 2780 flow. Second operand has 17 states, 17 states have (on average 5.882352941176471) internal successors, (100), 17 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:08,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:05:08,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-28 05:05:08,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:05:09,594 INFO L124 PetriNetUnfolderBase]: 892/1522 cut-off events. [2024-11-28 05:05:09,595 INFO L125 PetriNetUnfolderBase]: For 15597/15597 co-relation queries the response was YES. [2024-11-28 05:05:09,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9592 conditions, 1522 events. 892/1522 cut-off events. For 15597/15597 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 7454 event pairs, 180 based on Foata normal form. 18/1539 useless extension candidates. Maximal degree in co-relation 9534. Up to 712 conditions per place. [2024-11-28 05:05:09,612 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 158 selfloop transitions, 67 changer transitions 0/226 dead transitions. [2024-11-28 05:05:09,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 226 transitions, 3713 flow [2024-11-28 05:05:09,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 05:05:09,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-28 05:05:09,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-11-28 05:05:09,613 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-11-28 05:05:09,613 INFO L175 Difference]: Start difference. First operand has 180 places, 164 transitions, 2780 flow. Second operand 10 states and 119 transitions. [2024-11-28 05:05:09,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 226 transitions, 3713 flow [2024-11-28 05:05:09,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 226 transitions, 3529 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-11-28 05:05:09,655 INFO L231 Difference]: Finished difference. Result has 177 places, 167 transitions, 2812 flow [2024-11-28 05:05:09,655 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2614, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2812, PETRI_PLACES=177, PETRI_TRANSITIONS=167} [2024-11-28 05:05:09,656 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 147 predicate places. [2024-11-28 05:05:09,656 INFO L471 AbstractCegarLoop]: Abstraction has has 177 places, 167 transitions, 2812 flow [2024-11-28 05:05:09,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.882352941176471) internal successors, (100), 17 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:09,656 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:05:09,656 INFO L206 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] [2024-11-28 05:05:09,662 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-28 05:05:09,856 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-28 05:05:09,856 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 05:05:09,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:05:09,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1357867268, now seen corresponding path program 1 times [2024-11-28 05:05:09,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:05:09,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743890015] [2024-11-28 05:05:09,861 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:05:09,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:05:09,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:05:10,092 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:05:10,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:05:10,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743890015] [2024-11-28 05:05:10,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743890015] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:05:10,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37141366] [2024-11-28 05:05:10,092 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:05:10,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:05:10,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:05:10,096 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:05:10,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-28 05:05:10,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:05:10,199 INFO L256 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-28 05:05:10,201 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:05:10,265 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-11-28 05:05:10,265 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2024-11-28 05:05:10,277 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:05:10,277 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:05:10,374 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-11-28 05:05:10,375 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 56 [2024-11-28 05:05:10,406 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:05:10,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [37141366] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:05:10,407 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:05:10,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 18 [2024-11-28 05:05:10,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824686295] [2024-11-28 05:05:10,407 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:05:10,407 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-28 05:05:10,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:05:10,407 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-28 05:05:10,408 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2024-11-28 05:05:10,408 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-28 05:05:10,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 167 transitions, 2812 flow. Second operand has 18 states, 18 states have (on average 5.5) internal successors, (99), 18 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:10,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:05:10,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-28 05:05:10,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:05:10,915 INFO L124 PetriNetUnfolderBase]: 984/1662 cut-off events. [2024-11-28 05:05:10,915 INFO L125 PetriNetUnfolderBase]: For 18000/18000 co-relation queries the response was YES. [2024-11-28 05:05:10,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10916 conditions, 1662 events. 984/1662 cut-off events. For 18000/18000 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 8219 event pairs, 416 based on Foata normal form. 12/1674 useless extension candidates. Maximal degree in co-relation 10857. Up to 1181 conditions per place. [2024-11-28 05:05:10,925 INFO L140 encePairwiseOnDemand]: 21/34 looper letters, 137 selfloop transitions, 70 changer transitions 0/208 dead transitions. [2024-11-28 05:05:10,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 208 transitions, 3712 flow [2024-11-28 05:05:10,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 05:05:10,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-28 05:05:10,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-11-28 05:05:10,926 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3176470588235294 [2024-11-28 05:05:10,926 INFO L175 Difference]: Start difference. First operand has 177 places, 167 transitions, 2812 flow. Second operand 10 states and 108 transitions. [2024-11-28 05:05:10,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 208 transitions, 3712 flow [2024-11-28 05:05:10,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 208 transitions, 3490 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-11-28 05:05:10,972 INFO L231 Difference]: Finished difference. Result has 179 places, 174 transitions, 2916 flow [2024-11-28 05:05:10,973 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2615, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2916, PETRI_PLACES=179, PETRI_TRANSITIONS=174} [2024-11-28 05:05:10,973 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 149 predicate places. [2024-11-28 05:05:10,973 INFO L471 AbstractCegarLoop]: Abstraction has has 179 places, 174 transitions, 2916 flow [2024-11-28 05:05:10,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.5) internal successors, (99), 18 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:10,973 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:05:10,973 INFO L206 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] [2024-11-28 05:05:10,979 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-28 05:05:11,173 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-28 05:05:11,174 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 05:05:11,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:05:11,174 INFO L85 PathProgramCache]: Analyzing trace with hash -959724094, now seen corresponding path program 2 times [2024-11-28 05:05:11,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:05:11,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982727351] [2024-11-28 05:05:11,174 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:05:11,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:05:11,187 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 05:05:11,187 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:05:11,429 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:05:11,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:05:11,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982727351] [2024-11-28 05:05:11,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982727351] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:05:11,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:05:11,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 05:05:11,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115147325] [2024-11-28 05:05:11,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:05:11,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 05:05:11,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:05:11,431 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 05:05:11,431 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-28 05:05:11,431 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-28 05:05:11,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 174 transitions, 2916 flow. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:11,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:05:11,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-28 05:05:11,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:05:11,962 INFO L124 PetriNetUnfolderBase]: 972/1650 cut-off events. [2024-11-28 05:05:11,962 INFO L125 PetriNetUnfolderBase]: For 15569/15569 co-relation queries the response was YES. [2024-11-28 05:05:11,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10554 conditions, 1650 events. 972/1650 cut-off events. For 15569/15569 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 8235 event pairs, 330 based on Foata normal form. 12/1662 useless extension candidates. Maximal degree in co-relation 10496. Up to 940 conditions per place. [2024-11-28 05:05:11,972 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 138 selfloop transitions, 66 changer transitions 20/225 dead transitions. [2024-11-28 05:05:11,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 225 transitions, 3584 flow [2024-11-28 05:05:11,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 05:05:11,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-28 05:05:11,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2024-11-28 05:05:11,973 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.31862745098039214 [2024-11-28 05:05:11,973 INFO L175 Difference]: Start difference. First operand has 179 places, 174 transitions, 2916 flow. Second operand 12 states and 130 transitions. [2024-11-28 05:05:11,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 225 transitions, 3584 flow [2024-11-28 05:05:12,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 225 transitions, 3468 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-11-28 05:05:12,017 INFO L231 Difference]: Finished difference. Result has 184 places, 165 transitions, 2777 flow [2024-11-28 05:05:12,017 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2739, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2777, PETRI_PLACES=184, PETRI_TRANSITIONS=165} [2024-11-28 05:05:12,017 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 154 predicate places. [2024-11-28 05:05:12,017 INFO L471 AbstractCegarLoop]: Abstraction has has 184 places, 165 transitions, 2777 flow [2024-11-28 05:05:12,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:12,018 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:05:12,018 INFO L206 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] [2024-11-28 05:05:12,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-11-28 05:05:12,018 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 05:05:12,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:05:12,018 INFO L85 PathProgramCache]: Analyzing trace with hash 43542616, now seen corresponding path program 3 times [2024-11-28 05:05:12,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:05:12,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769417357] [2024-11-28 05:05:12,018 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 05:05:12,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:05:12,036 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 05:05:12,036 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:05:12,320 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:05:12,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:05:12,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769417357] [2024-11-28 05:05:12,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769417357] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:05:12,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289957533] [2024-11-28 05:05:12,321 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 05:05:12,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:05:12,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:05:12,323 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:05:12,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-28 05:05:12,427 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 05:05:12,427 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:05:12,429 INFO L256 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-28 05:05:12,430 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:05:12,526 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:05:12,526 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 21 [2024-11-28 05:05:12,551 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:05:12,551 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:05:12,659 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-11-28 05:05:12,659 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 48 [2024-11-28 05:05:12,685 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:05:12,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [289957533] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 05:05:12,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:05:12,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9, 9] total 18 [2024-11-28 05:05:12,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371193758] [2024-11-28 05:05:12,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:05:12,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 05:05:12,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:05:12,686 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 05:05:12,686 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2024-11-28 05:05:12,686 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-28 05:05:12,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 165 transitions, 2777 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:12,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:05:12,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-28 05:05:12,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:05:13,172 INFO L124 PetriNetUnfolderBase]: 1026/1737 cut-off events. [2024-11-28 05:05:13,173 INFO L125 PetriNetUnfolderBase]: For 17997/17997 co-relation queries the response was YES. [2024-11-28 05:05:13,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11187 conditions, 1737 events. 1026/1737 cut-off events. For 17997/17997 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 8693 event pairs, 334 based on Foata normal form. 12/1749 useless extension candidates. Maximal degree in co-relation 11129. Up to 959 conditions per place. [2024-11-28 05:05:13,184 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 164 selfloop transitions, 69 changer transitions 3/237 dead transitions. [2024-11-28 05:05:13,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 237 transitions, 3761 flow [2024-11-28 05:05:13,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 05:05:13,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-28 05:05:13,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-11-28 05:05:13,185 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.37967914438502676 [2024-11-28 05:05:13,185 INFO L175 Difference]: Start difference. First operand has 184 places, 165 transitions, 2777 flow. Second operand 11 states and 142 transitions. [2024-11-28 05:05:13,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 237 transitions, 3761 flow [2024-11-28 05:05:13,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 237 transitions, 3591 flow, removed 21 selfloop flow, removed 12 redundant places. [2024-11-28 05:05:13,226 INFO L231 Difference]: Finished difference. Result has 175 places, 171 transitions, 2897 flow [2024-11-28 05:05:13,226 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2634, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2897, PETRI_PLACES=175, PETRI_TRANSITIONS=171} [2024-11-28 05:05:13,227 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 145 predicate places. [2024-11-28 05:05:13,227 INFO L471 AbstractCegarLoop]: Abstraction has has 175 places, 171 transitions, 2897 flow [2024-11-28 05:05:13,227 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:13,227 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:05:13,227 INFO L206 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] [2024-11-28 05:05:13,236 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-28 05:05:13,427 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2024-11-28 05:05:13,428 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 05:05:13,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:05:13,428 INFO L85 PathProgramCache]: Analyzing trace with hash 607647208, now seen corresponding path program 2 times [2024-11-28 05:05:13,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:05:13,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774815835] [2024-11-28 05:05:13,428 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:05:13,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:05:13,438 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 05:05:13,439 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:05:13,658 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:05:13,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:05:13,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774815835] [2024-11-28 05:05:13,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774815835] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:05:13,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:05:13,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 05:05:13,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021229986] [2024-11-28 05:05:13,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:05:13,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 05:05:13,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:05:13,659 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 05:05:13,659 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-28 05:05:13,660 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-28 05:05:13,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 171 transitions, 2897 flow. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:13,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:05:13,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-28 05:05:13,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:05:14,112 INFO L124 PetriNetUnfolderBase]: 1148/1931 cut-off events. [2024-11-28 05:05:14,113 INFO L125 PetriNetUnfolderBase]: For 19520/19520 co-relation queries the response was YES. [2024-11-28 05:05:14,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12538 conditions, 1931 events. 1148/1931 cut-off events. For 19520/19520 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 9912 event pairs, 412 based on Foata normal form. 18/1948 useless extension candidates. Maximal degree in co-relation 12483. Up to 1271 conditions per place. [2024-11-28 05:05:14,125 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 144 selfloop transitions, 78 changer transitions 0/223 dead transitions. [2024-11-28 05:05:14,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 223 transitions, 3783 flow [2024-11-28 05:05:14,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 05:05:14,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-28 05:05:14,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-11-28 05:05:14,126 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.35947712418300654 [2024-11-28 05:05:14,126 INFO L175 Difference]: Start difference. First operand has 175 places, 171 transitions, 2897 flow. Second operand 9 states and 110 transitions. [2024-11-28 05:05:14,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 223 transitions, 3783 flow [2024-11-28 05:05:14,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 223 transitions, 3705 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-11-28 05:05:14,169 INFO L231 Difference]: Finished difference. Result has 182 places, 177 transitions, 3102 flow [2024-11-28 05:05:14,169 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2819, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3102, PETRI_PLACES=182, PETRI_TRANSITIONS=177} [2024-11-28 05:05:14,170 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 152 predicate places. [2024-11-28 05:05:14,170 INFO L471 AbstractCegarLoop]: Abstraction has has 182 places, 177 transitions, 3102 flow [2024-11-28 05:05:14,170 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:14,170 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:05:14,170 INFO L206 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] [2024-11-28 05:05:14,171 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-11-28 05:05:14,171 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 05:05:14,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:05:14,171 INFO L85 PathProgramCache]: Analyzing trace with hash -337922712, now seen corresponding path program 3 times [2024-11-28 05:05:14,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:05:14,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161962306] [2024-11-28 05:05:14,171 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 05:05:14,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:05:14,181 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-28 05:05:14,181 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:05:14,420 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:05:14,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:05:14,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161962306] [2024-11-28 05:05:14,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161962306] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:05:14,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:05:14,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 05:05:14,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174829402] [2024-11-28 05:05:14,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:05:14,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 05:05:14,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:05:14,421 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 05:05:14,421 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-28 05:05:14,421 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-28 05:05:14,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 177 transitions, 3102 flow. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:14,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:05:14,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-28 05:05:14,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:05:14,870 INFO L124 PetriNetUnfolderBase]: 1130/1913 cut-off events. [2024-11-28 05:05:14,870 INFO L125 PetriNetUnfolderBase]: For 21531/21531 co-relation queries the response was YES. [2024-11-28 05:05:14,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12671 conditions, 1913 events. 1130/1913 cut-off events. For 21531/21531 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 9897 event pairs, 455 based on Foata normal form. 18/1931 useless extension candidates. Maximal degree in co-relation 12614. Up to 1371 conditions per place. [2024-11-28 05:05:14,882 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 131 selfloop transitions, 76 changer transitions 0/208 dead transitions. [2024-11-28 05:05:14,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 208 transitions, 3698 flow [2024-11-28 05:05:14,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 05:05:14,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-28 05:05:14,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-11-28 05:05:14,883 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3300653594771242 [2024-11-28 05:05:14,883 INFO L175 Difference]: Start difference. First operand has 182 places, 177 transitions, 3102 flow. Second operand 9 states and 101 transitions. [2024-11-28 05:05:14,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 208 transitions, 3698 flow [2024-11-28 05:05:14,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 208 transitions, 3611 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-11-28 05:05:14,937 INFO L231 Difference]: Finished difference. Result has 186 places, 177 transitions, 3176 flow [2024-11-28 05:05:14,937 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=3015, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3176, PETRI_PLACES=186, PETRI_TRANSITIONS=177} [2024-11-28 05:05:14,937 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 156 predicate places. [2024-11-28 05:05:14,938 INFO L471 AbstractCegarLoop]: Abstraction has has 186 places, 177 transitions, 3176 flow [2024-11-28 05:05:14,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:14,938 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:05:14,938 INFO L206 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] [2024-11-28 05:05:14,938 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-11-28 05:05:14,938 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 05:05:14,939 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:05:14,939 INFO L85 PathProgramCache]: Analyzing trace with hash -934028628, now seen corresponding path program 4 times [2024-11-28 05:05:14,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:05:14,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060369381] [2024-11-28 05:05:14,939 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 05:05:14,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:05:14,948 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 05:05:14,949 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:05:15,030 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:05:15,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:05:15,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060369381] [2024-11-28 05:05:15,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060369381] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:05:15,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:05:15,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 05:05:15,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322599206] [2024-11-28 05:05:15,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:05:15,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 05:05:15,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:05:15,031 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 05:05:15,031 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-28 05:05:15,032 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-28 05:05:15,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 177 transitions, 3176 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:15,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:05:15,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-28 05:05:15,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:05:15,428 INFO L124 PetriNetUnfolderBase]: 1098/1863 cut-off events. [2024-11-28 05:05:15,428 INFO L125 PetriNetUnfolderBase]: For 20031/20031 co-relation queries the response was YES. [2024-11-28 05:05:15,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12380 conditions, 1863 events. 1098/1863 cut-off events. For 20031/20031 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 9591 event pairs, 463 based on Foata normal form. 6/1869 useless extension candidates. Maximal degree in co-relation 12323. Up to 1356 conditions per place. [2024-11-28 05:05:15,441 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 125 selfloop transitions, 68 changer transitions 5/199 dead transitions. [2024-11-28 05:05:15,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 199 transitions, 3624 flow [2024-11-28 05:05:15,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 05:05:15,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-28 05:05:15,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 93 transitions. [2024-11-28 05:05:15,442 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.34191176470588236 [2024-11-28 05:05:15,442 INFO L175 Difference]: Start difference. First operand has 186 places, 177 transitions, 3176 flow. Second operand 8 states and 93 transitions. [2024-11-28 05:05:15,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 199 transitions, 3624 flow [2024-11-28 05:05:15,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 199 transitions, 3488 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-11-28 05:05:15,497 INFO L231 Difference]: Finished difference. Result has 188 places, 172 transitions, 3055 flow [2024-11-28 05:05:15,497 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2974, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3055, PETRI_PLACES=188, PETRI_TRANSITIONS=172} [2024-11-28 05:05:15,497 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 158 predicate places. [2024-11-28 05:05:15,497 INFO L471 AbstractCegarLoop]: Abstraction has has 188 places, 172 transitions, 3055 flow [2024-11-28 05:05:15,497 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:15,498 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:05:15,498 INFO L206 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] [2024-11-28 05:05:15,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-11-28 05:05:15,498 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 05:05:15,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:05:15,498 INFO L85 PathProgramCache]: Analyzing trace with hash -2086046834, now seen corresponding path program 4 times [2024-11-28 05:05:15,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:05:15,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831178007] [2024-11-28 05:05:15,499 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 05:05:15,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:05:15,507 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 05:05:15,507 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:05:15,597 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:05:15,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:05:15,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831178007] [2024-11-28 05:05:15,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831178007] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:05:15,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:05:15,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 05:05:15,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832053854] [2024-11-28 05:05:15,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:05:15,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 05:05:15,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:05:15,598 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 05:05:15,598 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-28 05:05:15,598 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-28 05:05:15,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 172 transitions, 3055 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:15,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:05:15,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-28 05:05:15,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:05:16,038 INFO L124 PetriNetUnfolderBase]: 1096/1862 cut-off events. [2024-11-28 05:05:16,038 INFO L125 PetriNetUnfolderBase]: For 19851/19851 co-relation queries the response was YES. [2024-11-28 05:05:16,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12300 conditions, 1862 events. 1096/1862 cut-off events. For 19851/19851 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 9601 event pairs, 453 based on Foata normal form. 7/1868 useless extension candidates. Maximal degree in co-relation 12243. Up to 1337 conditions per place. [2024-11-28 05:05:16,048 INFO L140 encePairwiseOnDemand]: 26/34 looper letters, 125 selfloop transitions, 67 changer transitions 9/202 dead transitions. [2024-11-28 05:05:16,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 202 transitions, 3604 flow [2024-11-28 05:05:16,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 05:05:16,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-28 05:05:16,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-11-28 05:05:16,049 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-11-28 05:05:16,049 INFO L175 Difference]: Start difference. First operand has 188 places, 172 transitions, 3055 flow. Second operand 9 states and 102 transitions. [2024-11-28 05:05:16,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 202 transitions, 3604 flow [2024-11-28 05:05:16,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 202 transitions, 3414 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-11-28 05:05:16,095 INFO L231 Difference]: Finished difference. Result has 185 places, 168 transitions, 2942 flow [2024-11-28 05:05:16,096 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2867, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2942, PETRI_PLACES=185, PETRI_TRANSITIONS=168} [2024-11-28 05:05:16,096 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 155 predicate places. [2024-11-28 05:05:16,096 INFO L471 AbstractCegarLoop]: Abstraction has has 185 places, 168 transitions, 2942 flow [2024-11-28 05:05:16,096 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:16,096 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:05:16,096 INFO L206 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] [2024-11-28 05:05:16,096 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-11-28 05:05:16,096 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 05:05:16,097 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:05:16,097 INFO L85 PathProgramCache]: Analyzing trace with hash -159993220, now seen corresponding path program 5 times [2024-11-28 05:05:16,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:05:16,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40842668] [2024-11-28 05:05:16,097 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 05:05:16,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:05:16,110 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 05:05:16,110 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:05:16,357 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:05:16,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:05:16,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40842668] [2024-11-28 05:05:16,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40842668] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:05:16,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579240119] [2024-11-28 05:05:16,358 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 05:05:16,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:05:16,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:05:16,360 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:05:16,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-28 05:05:16,466 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 05:05:16,466 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:05:16,467 INFO L256 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-28 05:05:16,468 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:05:16,585 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:05:16,585 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 21 [2024-11-28 05:05:16,610 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:05:16,610 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:05:16,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1579240119] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:05:16,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:05:16,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8] total 16 [2024-11-28 05:05:16,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034008673] [2024-11-28 05:05:16,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:05:16,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 05:05:16,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:05:16,611 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 05:05:16,611 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2024-11-28 05:05:16,611 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-28 05:05:16,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 168 transitions, 2942 flow. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:16,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:05:16,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-28 05:05:16,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:05:17,082 INFO L124 PetriNetUnfolderBase]: 1023/1730 cut-off events. [2024-11-28 05:05:17,082 INFO L125 PetriNetUnfolderBase]: For 17770/17770 co-relation queries the response was YES. [2024-11-28 05:05:17,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11460 conditions, 1730 events. 1023/1730 cut-off events. For 17770/17770 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 8701 event pairs, 426 based on Foata normal form. 7/1736 useless extension candidates. Maximal degree in co-relation 11403. Up to 1246 conditions per place. [2024-11-28 05:05:17,092 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 119 selfloop transitions, 65 changer transitions 6/191 dead transitions. [2024-11-28 05:05:17,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 191 transitions, 3366 flow [2024-11-28 05:05:17,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 05:05:17,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-28 05:05:17,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 98 transitions. [2024-11-28 05:05:17,093 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.28823529411764703 [2024-11-28 05:05:17,093 INFO L175 Difference]: Start difference. First operand has 185 places, 168 transitions, 2942 flow. Second operand 10 states and 98 transitions. [2024-11-28 05:05:17,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 191 transitions, 3366 flow [2024-11-28 05:05:17,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 191 transitions, 3259 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-11-28 05:05:17,143 INFO L231 Difference]: Finished difference. Result has 183 places, 163 transitions, 2851 flow [2024-11-28 05:05:17,144 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2758, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2851, PETRI_PLACES=183, PETRI_TRANSITIONS=163} [2024-11-28 05:05:17,144 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 153 predicate places. [2024-11-28 05:05:17,144 INFO L471 AbstractCegarLoop]: Abstraction has has 183 places, 163 transitions, 2851 flow [2024-11-28 05:05:17,144 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:17,144 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:05:17,144 INFO L206 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] [2024-11-28 05:05:17,151 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-28 05:05:17,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2024-11-28 05:05:17,345 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 05:05:17,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:05:17,345 INFO L85 PathProgramCache]: Analyzing trace with hash -583005852, now seen corresponding path program 6 times [2024-11-28 05:05:17,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:05:17,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055167378] [2024-11-28 05:05:17,345 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 05:05:17,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:05:17,356 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-28 05:05:17,356 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:05:17,579 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:05:17,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:05:17,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055167378] [2024-11-28 05:05:17,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055167378] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:05:17,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:05:17,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 05:05:17,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137079921] [2024-11-28 05:05:17,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:05:17,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 05:05:17,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:05:17,580 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 05:05:17,580 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-28 05:05:17,580 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-28 05:05:17,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 163 transitions, 2851 flow. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:17,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:05:17,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-28 05:05:17,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:05:17,959 INFO L124 PetriNetUnfolderBase]: 1047/1761 cut-off events. [2024-11-28 05:05:17,959 INFO L125 PetriNetUnfolderBase]: For 19596/19596 co-relation queries the response was YES. [2024-11-28 05:05:17,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11859 conditions, 1761 events. 1047/1761 cut-off events. For 19596/19596 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 8811 event pairs, 440 based on Foata normal form. 12/1773 useless extension candidates. Maximal degree in co-relation 11803. Up to 1260 conditions per place. [2024-11-28 05:05:17,969 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 124 selfloop transitions, 65 changer transitions 0/190 dead transitions. [2024-11-28 05:05:17,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 190 transitions, 3514 flow [2024-11-28 05:05:17,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 05:05:17,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-28 05:05:17,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-11-28 05:05:17,970 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3202614379084967 [2024-11-28 05:05:17,970 INFO L175 Difference]: Start difference. First operand has 183 places, 163 transitions, 2851 flow. Second operand 9 states and 98 transitions. [2024-11-28 05:05:17,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 190 transitions, 3514 flow [2024-11-28 05:05:18,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 190 transitions, 3276 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-11-28 05:05:18,016 INFO L231 Difference]: Finished difference. Result has 177 places, 170 transitions, 2935 flow [2024-11-28 05:05:18,016 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2633, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2935, PETRI_PLACES=177, PETRI_TRANSITIONS=170} [2024-11-28 05:05:18,016 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 147 predicate places. [2024-11-28 05:05:18,016 INFO L471 AbstractCegarLoop]: Abstraction has has 177 places, 170 transitions, 2935 flow [2024-11-28 05:05:18,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:18,017 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:05:18,017 INFO L206 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] [2024-11-28 05:05:18,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-11-28 05:05:18,017 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 05:05:18,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:05:18,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1114239092, now seen corresponding path program 7 times [2024-11-28 05:05:18,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:05:18,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423054420] [2024-11-28 05:05:18,017 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 05:05:18,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:05:18,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:05:18,283 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:05:18,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:05:18,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423054420] [2024-11-28 05:05:18,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423054420] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:05:18,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442275708] [2024-11-28 05:05:18,283 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 05:05:18,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:05:18,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:05:18,285 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:05:18,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-28 05:05:18,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:05:18,382 INFO L256 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-28 05:05:18,383 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:05:18,433 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:05:18,434 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 25 [2024-11-28 05:05:18,461 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:05:18,461 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:05:18,557 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-11-28 05:05:18,557 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 56 [2024-11-28 05:05:18,584 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:05:18,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1442275708] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 05:05:18,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:05:18,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9, 7] total 18 [2024-11-28 05:05:18,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366379579] [2024-11-28 05:05:18,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:05:18,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 05:05:18,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:05:18,585 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 05:05:18,585 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2024-11-28 05:05:18,585 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-28 05:05:18,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 170 transitions, 2935 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:18,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:05:18,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-28 05:05:18,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:05:19,063 INFO L124 PetriNetUnfolderBase]: 1098/1864 cut-off events. [2024-11-28 05:05:19,063 INFO L125 PetriNetUnfolderBase]: For 18535/18535 co-relation queries the response was YES. [2024-11-28 05:05:19,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12027 conditions, 1864 events. 1098/1864 cut-off events. For 18535/18535 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 9563 event pairs, 429 based on Foata normal form. 12/1876 useless extension candidates. Maximal degree in co-relation 11970. Up to 1248 conditions per place. [2024-11-28 05:05:19,074 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 148 selfloop transitions, 67 changer transitions 0/216 dead transitions. [2024-11-28 05:05:19,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 216 transitions, 3699 flow [2024-11-28 05:05:19,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 05:05:19,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-28 05:05:19,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-11-28 05:05:19,075 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36470588235294116 [2024-11-28 05:05:19,076 INFO L175 Difference]: Start difference. First operand has 177 places, 170 transitions, 2935 flow. Second operand 10 states and 124 transitions. [2024-11-28 05:05:19,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 216 transitions, 3699 flow [2024-11-28 05:05:19,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 216 transitions, 3608 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-11-28 05:05:19,125 INFO L231 Difference]: Finished difference. Result has 185 places, 176 transitions, 3119 flow [2024-11-28 05:05:19,125 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2847, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3119, PETRI_PLACES=185, PETRI_TRANSITIONS=176} [2024-11-28 05:05:19,126 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 155 predicate places. [2024-11-28 05:05:19,126 INFO L471 AbstractCegarLoop]: Abstraction has has 185 places, 176 transitions, 3119 flow [2024-11-28 05:05:19,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:19,126 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:05:19,126 INFO L206 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] [2024-11-28 05:05:19,136 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-28 05:05:19,327 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2024-11-28 05:05:19,327 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 05:05:19,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:05:19,327 INFO L85 PathProgramCache]: Analyzing trace with hash -198592076, now seen corresponding path program 5 times [2024-11-28 05:05:19,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:05:19,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391271832] [2024-11-28 05:05:19,328 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 05:05:19,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:05:19,345 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 05:05:19,345 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:05:19,591 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:05:19,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:05:19,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391271832] [2024-11-28 05:05:19,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391271832] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:05:19,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639232156] [2024-11-28 05:05:19,592 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 05:05:19,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:05:19,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:05:19,594 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:05:19,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-28 05:05:19,702 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 05:05:19,702 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:05:19,704 INFO L256 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-28 05:05:19,705 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:05:19,827 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-11-28 05:05:19,828 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2024-11-28 05:05:19,843 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:05:19,843 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:05:19,947 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-11-28 05:05:19,947 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 56 [2024-11-28 05:05:19,976 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:05:19,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [639232156] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:05:19,976 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:05:19,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2024-11-28 05:05:19,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287275903] [2024-11-28 05:05:19,977 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:05:19,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-28 05:05:19,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:05:19,977 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-28 05:05:19,977 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2024-11-28 05:05:19,978 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-28 05:05:19,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 176 transitions, 3119 flow. Second operand has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:19,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:05:19,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-28 05:05:19,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:05:20,687 INFO L124 PetriNetUnfolderBase]: 1220/2058 cut-off events. [2024-11-28 05:05:20,687 INFO L125 PetriNetUnfolderBase]: For 22508/22508 co-relation queries the response was YES. [2024-11-28 05:05:20,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13554 conditions, 2058 events. 1220/2058 cut-off events. For 22508/22508 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 10803 event pairs, 454 based on Foata normal form. 18/2075 useless extension candidates. Maximal degree in co-relation 13494. Up to 1397 conditions per place. [2024-11-28 05:05:20,701 INFO L140 encePairwiseOnDemand]: 19/34 looper letters, 142 selfloop transitions, 75 changer transitions 0/218 dead transitions. [2024-11-28 05:05:20,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 218 transitions, 3945 flow [2024-11-28 05:05:20,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 05:05:20,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-28 05:05:20,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-11-28 05:05:20,702 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3074866310160428 [2024-11-28 05:05:20,702 INFO L175 Difference]: Start difference. First operand has 185 places, 176 transitions, 3119 flow. Second operand 11 states and 115 transitions. [2024-11-28 05:05:20,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 218 transitions, 3945 flow [2024-11-28 05:05:20,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 218 transitions, 3875 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-11-28 05:05:20,762 INFO L231 Difference]: Finished difference. Result has 194 places, 182 transitions, 3333 flow [2024-11-28 05:05:20,763 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=3049, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3333, PETRI_PLACES=194, PETRI_TRANSITIONS=182} [2024-11-28 05:05:20,763 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 164 predicate places. [2024-11-28 05:05:20,763 INFO L471 AbstractCegarLoop]: Abstraction has has 194 places, 182 transitions, 3333 flow [2024-11-28 05:05:20,763 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:20,763 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:05:20,764 INFO L206 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] [2024-11-28 05:05:20,772 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-28 05:05:20,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2024-11-28 05:05:20,964 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 05:05:20,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:05:20,965 INFO L85 PathProgramCache]: Analyzing trace with hash 857454440, now seen corresponding path program 6 times [2024-11-28 05:05:20,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:05:20,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285190632] [2024-11-28 05:05:20,965 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 05:05:20,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:05:20,976 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-28 05:05:20,976 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:05:21,162 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:05:21,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:05:21,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285190632] [2024-11-28 05:05:21,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285190632] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:05:21,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:05:21,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 05:05:21,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112384491] [2024-11-28 05:05:21,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:05:21,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 05:05:21,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:05:21,163 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 05:05:21,163 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-28 05:05:21,163 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-28 05:05:21,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 182 transitions, 3333 flow. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:21,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:05:21,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-28 05:05:21,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:05:21,743 INFO L124 PetriNetUnfolderBase]: 1221/2065 cut-off events. [2024-11-28 05:05:21,743 INFO L125 PetriNetUnfolderBase]: For 25163/25163 co-relation queries the response was YES. [2024-11-28 05:05:21,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13897 conditions, 2065 events. 1221/2065 cut-off events. For 25163/25163 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 10887 event pairs, 519 based on Foata normal form. 6/2071 useless extension candidates. Maximal degree in co-relation 13835. Up to 1545 conditions per place. [2024-11-28 05:05:21,759 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 124 selfloop transitions, 68 changer transitions 5/198 dead transitions. [2024-11-28 05:05:21,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 198 transitions, 3808 flow [2024-11-28 05:05:21,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 05:05:21,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-28 05:05:21,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 98 transitions. [2024-11-28 05:05:21,760 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.28823529411764703 [2024-11-28 05:05:21,760 INFO L175 Difference]: Start difference. First operand has 194 places, 182 transitions, 3333 flow. Second operand 10 states and 98 transitions. [2024-11-28 05:05:21,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 198 transitions, 3808 flow [2024-11-28 05:05:21,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 198 transitions, 3689 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-11-28 05:05:21,828 INFO L231 Difference]: Finished difference. Result has 197 places, 181 transitions, 3330 flow [2024-11-28 05:05:21,828 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=3216, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3330, PETRI_PLACES=197, PETRI_TRANSITIONS=181} [2024-11-28 05:05:21,828 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 167 predicate places. [2024-11-28 05:05:21,829 INFO L471 AbstractCegarLoop]: Abstraction has has 197 places, 181 transitions, 3330 flow [2024-11-28 05:05:21,829 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:21,829 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:05:21,829 INFO L206 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] [2024-11-28 05:05:21,829 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-11-28 05:05:21,829 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 05:05:21,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:05:21,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1464481500, now seen corresponding path program 7 times [2024-11-28 05:05:21,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:05:21,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478609784] [2024-11-28 05:05:21,830 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 05:05:21,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:05:21,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:05:22,105 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:05:22,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:05:22,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478609784] [2024-11-28 05:05:22,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478609784] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:05:22,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [479536454] [2024-11-28 05:05:22,105 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 05:05:22,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:05:22,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:05:22,111 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:05:22,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-28 05:05:22,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:05:22,230 INFO L256 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-28 05:05:22,231 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:05:22,279 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:05:22,280 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 25 [2024-11-28 05:05:22,306 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:05:22,306 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:05:22,397 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-11-28 05:05:22,398 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 56 [2024-11-28 05:05:22,424 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:05:22,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [479536454] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 05:05:22,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:05:22,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9, 7] total 18 [2024-11-28 05:05:22,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637165197] [2024-11-28 05:05:22,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:05:22,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 05:05:22,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:05:22,425 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 05:05:22,426 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2024-11-28 05:05:22,426 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-28 05:05:22,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 181 transitions, 3330 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:22,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:05:22,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-28 05:05:22,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:05:23,036 INFO L124 PetriNetUnfolderBase]: 1311/2233 cut-off events. [2024-11-28 05:05:23,036 INFO L125 PetriNetUnfolderBase]: For 25890/25890 co-relation queries the response was YES. [2024-11-28 05:05:23,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14799 conditions, 2233 events. 1311/2233 cut-off events. For 25890/25890 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 12039 event pairs, 549 based on Foata normal form. 18/2251 useless extension candidates. Maximal degree in co-relation 14737. Up to 1568 conditions per place. [2024-11-28 05:05:23,056 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 148 selfloop transitions, 71 changer transitions 0/220 dead transitions. [2024-11-28 05:05:23,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 220 transitions, 4083 flow [2024-11-28 05:05:23,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 05:05:23,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-28 05:05:23,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-11-28 05:05:23,057 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.35947712418300654 [2024-11-28 05:05:23,057 INFO L175 Difference]: Start difference. First operand has 197 places, 181 transitions, 3330 flow. Second operand 9 states and 110 transitions. [2024-11-28 05:05:23,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 220 transitions, 4083 flow [2024-11-28 05:05:23,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 220 transitions, 3941 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-11-28 05:05:23,127 INFO L231 Difference]: Finished difference. Result has 198 places, 187 transitions, 3479 flow [2024-11-28 05:05:23,127 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=3194, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3479, PETRI_PLACES=198, PETRI_TRANSITIONS=187} [2024-11-28 05:05:23,127 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 168 predicate places. [2024-11-28 05:05:23,127 INFO L471 AbstractCegarLoop]: Abstraction has has 198 places, 187 transitions, 3479 flow [2024-11-28 05:05:23,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:23,128 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:05:23,128 INFO L206 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] [2024-11-28 05:05:23,139 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-28 05:05:23,328 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:05:23,328 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 05:05:23,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:05:23,329 INFO L85 PathProgramCache]: Analyzing trace with hash 232763444, now seen corresponding path program 8 times [2024-11-28 05:05:23,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:05:23,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127991940] [2024-11-28 05:05:23,329 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:05:23,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:05:23,340 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 05:05:23,340 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:05:23,565 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:05:23,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:05:23,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127991940] [2024-11-28 05:05:23,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127991940] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:05:23,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:05:23,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 05:05:23,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701964623] [2024-11-28 05:05:23,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:05:23,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 05:05:23,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:05:23,567 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 05:05:23,567 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-28 05:05:23,567 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-28 05:05:23,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 187 transitions, 3479 flow. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:23,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:05:23,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-28 05:05:23,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:05:24,140 INFO L124 PetriNetUnfolderBase]: 1293/2215 cut-off events. [2024-11-28 05:05:24,140 INFO L125 PetriNetUnfolderBase]: For 26176/26176 co-relation queries the response was YES. [2024-11-28 05:05:24,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14629 conditions, 2215 events. 1293/2215 cut-off events. For 26176/26176 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 12094 event pairs, 545 based on Foata normal form. 18/2233 useless extension candidates. Maximal degree in co-relation 14565. Up to 1667 conditions per place. [2024-11-28 05:05:24,158 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 134 selfloop transitions, 73 changer transitions 0/208 dead transitions. [2024-11-28 05:05:24,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 208 transitions, 4011 flow [2024-11-28 05:05:24,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 05:05:24,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-28 05:05:24,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-11-28 05:05:24,159 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3235294117647059 [2024-11-28 05:05:24,159 INFO L175 Difference]: Start difference. First operand has 198 places, 187 transitions, 3479 flow. Second operand 9 states and 99 transitions. [2024-11-28 05:05:24,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 208 transitions, 4011 flow [2024-11-28 05:05:24,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 208 transitions, 3884 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-11-28 05:05:24,235 INFO L231 Difference]: Finished difference. Result has 203 places, 187 transitions, 3507 flow [2024-11-28 05:05:24,235 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=3352, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3507, PETRI_PLACES=203, PETRI_TRANSITIONS=187} [2024-11-28 05:05:24,236 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 173 predicate places. [2024-11-28 05:05:24,236 INFO L471 AbstractCegarLoop]: Abstraction has has 203 places, 187 transitions, 3507 flow [2024-11-28 05:05:24,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:24,236 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:05:24,236 INFO L206 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] [2024-11-28 05:05:24,236 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-11-28 05:05:24,236 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 05:05:24,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:05:24,237 INFO L85 PathProgramCache]: Analyzing trace with hash 505078750, now seen corresponding path program 9 times [2024-11-28 05:05:24,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:05:24,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335915397] [2024-11-28 05:05:24,237 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 05:05:24,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:05:24,249 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-28 05:05:24,250 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:05:24,532 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:05:24,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:05:24,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335915397] [2024-11-28 05:05:24,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335915397] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:05:24,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:05:24,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 05:05:24,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867325434] [2024-11-28 05:05:24,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:05:24,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 05:05:24,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:05:24,533 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 05:05:24,533 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-28 05:05:24,534 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-28 05:05:24,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 187 transitions, 3507 flow. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:24,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:05:24,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-28 05:05:24,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:05:25,152 INFO L124 PetriNetUnfolderBase]: 1227/2089 cut-off events. [2024-11-28 05:05:25,152 INFO L125 PetriNetUnfolderBase]: For 24433/24433 co-relation queries the response was YES. [2024-11-28 05:05:25,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14008 conditions, 2089 events. 1227/2089 cut-off events. For 24433/24433 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 11161 event pairs, 529 based on Foata normal form. 6/2095 useless extension candidates. Maximal degree in co-relation 13943. Up to 1571 conditions per place. [2024-11-28 05:05:25,167 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 129 selfloop transitions, 64 changer transitions 8/202 dead transitions. [2024-11-28 05:05:25,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 202 transitions, 3914 flow [2024-11-28 05:05:25,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 05:05:25,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-28 05:05:25,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 103 transitions. [2024-11-28 05:05:25,168 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.27540106951871657 [2024-11-28 05:05:25,168 INFO L175 Difference]: Start difference. First operand has 203 places, 187 transitions, 3507 flow. Second operand 11 states and 103 transitions. [2024-11-28 05:05:25,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 202 transitions, 3914 flow [2024-11-28 05:05:25,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 202 transitions, 3769 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-11-28 05:05:25,242 INFO L231 Difference]: Finished difference. Result has 206 places, 180 transitions, 3337 flow [2024-11-28 05:05:25,242 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=3309, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3337, PETRI_PLACES=206, PETRI_TRANSITIONS=180} [2024-11-28 05:05:25,243 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 176 predicate places. [2024-11-28 05:05:25,243 INFO L471 AbstractCegarLoop]: Abstraction has has 206 places, 180 transitions, 3337 flow [2024-11-28 05:05:25,243 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:25,243 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:05:25,243 INFO L206 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] [2024-11-28 05:05:25,243 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-11-28 05:05:25,243 INFO L396 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 05:05:25,244 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:05:25,244 INFO L85 PathProgramCache]: Analyzing trace with hash 2092669856, now seen corresponding path program 10 times [2024-11-28 05:05:25,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:05:25,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686549110] [2024-11-28 05:05:25,244 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 05:05:25,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:05:25,255 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 05:05:25,255 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:05:25,360 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:05:25,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:05:25,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686549110] [2024-11-28 05:05:25,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686549110] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:05:25,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:05:25,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 05:05:25,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072810114] [2024-11-28 05:05:25,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:05:25,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 05:05:25,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:05:25,361 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 05:05:25,361 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-28 05:05:25,361 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-28 05:05:25,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 180 transitions, 3337 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:25,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:05:25,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-28 05:05:25,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:05:25,788 INFO L124 PetriNetUnfolderBase]: 1185/2017 cut-off events. [2024-11-28 05:05:25,788 INFO L125 PetriNetUnfolderBase]: For 22989/22989 co-relation queries the response was YES. [2024-11-28 05:05:25,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13413 conditions, 2017 events. 1185/2017 cut-off events. For 22989/22989 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 10630 event pairs, 513 based on Foata normal form. 6/2023 useless extension candidates. Maximal degree in co-relation 13349. Up to 1528 conditions per place. [2024-11-28 05:05:25,802 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 126 selfloop transitions, 60 changer transitions 5/192 dead transitions. [2024-11-28 05:05:25,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 192 transitions, 3702 flow [2024-11-28 05:05:25,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 05:05:25,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-28 05:05:25,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-11-28 05:05:25,803 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3272058823529412 [2024-11-28 05:05:25,803 INFO L175 Difference]: Start difference. First operand has 206 places, 180 transitions, 3337 flow. Second operand 8 states and 89 transitions. [2024-11-28 05:05:25,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 192 transitions, 3702 flow [2024-11-28 05:05:25,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 192 transitions, 3552 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-11-28 05:05:25,860 INFO L231 Difference]: Finished difference. Result has 200 places, 175 transitions, 3183 flow [2024-11-28 05:05:25,860 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=3116, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3183, PETRI_PLACES=200, PETRI_TRANSITIONS=175} [2024-11-28 05:05:25,860 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 170 predicate places. [2024-11-28 05:05:25,860 INFO L471 AbstractCegarLoop]: Abstraction has has 200 places, 175 transitions, 3183 flow [2024-11-28 05:05:25,860 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:25,861 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:05:25,861 INFO L206 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] [2024-11-28 05:05:25,861 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-11-28 05:05:25,861 INFO L396 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 05:05:25,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:05:25,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1251176118, now seen corresponding path program 8 times [2024-11-28 05:05:25,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:05:25,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099393705] [2024-11-28 05:05:25,861 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:05:25,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:05:25,871 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 05:05:25,871 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:05:26,088 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:05:26,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:05:26,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099393705] [2024-11-28 05:05:26,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099393705] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:05:26,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:05:26,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 05:05:26,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674876864] [2024-11-28 05:05:26,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:05:26,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 05:05:26,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:05:26,096 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 05:05:26,096 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-28 05:05:26,096 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-28 05:05:26,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 175 transitions, 3183 flow. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:26,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:05:26,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-28 05:05:26,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:05:26,613 INFO L124 PetriNetUnfolderBase]: 1183/2016 cut-off events. [2024-11-28 05:05:26,613 INFO L125 PetriNetUnfolderBase]: For 22742/22742 co-relation queries the response was YES. [2024-11-28 05:05:26,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13328 conditions, 2016 events. 1183/2016 cut-off events. For 22742/22742 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 10634 event pairs, 504 based on Foata normal form. 7/2023 useless extension candidates. Maximal degree in co-relation 13265. Up to 1495 conditions per place. [2024-11-28 05:05:26,628 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 124 selfloop transitions, 61 changer transitions 9/195 dead transitions. [2024-11-28 05:05:26,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 195 transitions, 3656 flow [2024-11-28 05:05:26,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 05:05:26,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-28 05:05:26,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 102 transitions. [2024-11-28 05:05:26,629 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2727272727272727 [2024-11-28 05:05:26,629 INFO L175 Difference]: Start difference. First operand has 200 places, 175 transitions, 3183 flow. Second operand 11 states and 102 transitions. [2024-11-28 05:05:26,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 195 transitions, 3656 flow [2024-11-28 05:05:26,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 195 transitions, 3520 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-11-28 05:05:26,685 INFO L231 Difference]: Finished difference. Result has 198 places, 171 transitions, 3110 flow [2024-11-28 05:05:26,686 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=3049, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3110, PETRI_PLACES=198, PETRI_TRANSITIONS=171} [2024-11-28 05:05:26,686 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 168 predicate places. [2024-11-28 05:05:26,686 INFO L471 AbstractCegarLoop]: Abstraction has has 198 places, 171 transitions, 3110 flow [2024-11-28 05:05:26,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:26,686 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:05:26,686 INFO L206 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] [2024-11-28 05:05:26,686 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-11-28 05:05:26,686 INFO L396 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 05:05:26,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:05:26,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1550090792, now seen corresponding path program 9 times [2024-11-28 05:05:26,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:05:26,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136398340] [2024-11-28 05:05:26,687 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 05:05:26,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:05:26,698 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-28 05:05:26,698 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:05:26,890 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:05:26,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:05:26,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136398340] [2024-11-28 05:05:26,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136398340] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:05:26,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:05:26,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 05:05:26,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379311298] [2024-11-28 05:05:26,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:05:26,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 05:05:26,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:05:26,891 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 05:05:26,891 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-28 05:05:26,891 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-28 05:05:26,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 171 transitions, 3110 flow. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:26,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:05:26,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-28 05:05:26,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:05:27,360 INFO L124 PetriNetUnfolderBase]: 1145/1952 cut-off events. [2024-11-28 05:05:27,360 INFO L125 PetriNetUnfolderBase]: For 21312/21312 co-relation queries the response was YES. [2024-11-28 05:05:27,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12774 conditions, 1952 events. 1145/1952 cut-off events. For 21312/21312 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 10217 event pairs, 507 based on Foata normal form. 7/1959 useless extension candidates. Maximal degree in co-relation 12713. Up to 1485 conditions per place. [2024-11-28 05:05:27,372 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 121 selfloop transitions, 56 changer transitions 6/184 dead transitions. [2024-11-28 05:05:27,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 184 transitions, 3456 flow [2024-11-28 05:05:27,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 05:05:27,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-28 05:05:27,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 94 transitions. [2024-11-28 05:05:27,373 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.27647058823529413 [2024-11-28 05:05:27,373 INFO L175 Difference]: Start difference. First operand has 198 places, 171 transitions, 3110 flow. Second operand 10 states and 94 transitions. [2024-11-28 05:05:27,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 184 transitions, 3456 flow [2024-11-28 05:05:27,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 184 transitions, 3257 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-11-28 05:05:27,421 INFO L231 Difference]: Finished difference. Result has 193 places, 166 transitions, 2903 flow [2024-11-28 05:05:27,422 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2834, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2903, PETRI_PLACES=193, PETRI_TRANSITIONS=166} [2024-11-28 05:05:27,422 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 163 predicate places. [2024-11-28 05:05:27,422 INFO L471 AbstractCegarLoop]: Abstraction has has 193 places, 166 transitions, 2903 flow [2024-11-28 05:05:27,422 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:27,422 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:05:27,422 INFO L206 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] [2024-11-28 05:05:27,422 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-11-28 05:05:27,422 INFO L396 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 05:05:27,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:05:27,423 INFO L85 PathProgramCache]: Analyzing trace with hash 508876822, now seen corresponding path program 10 times [2024-11-28 05:05:27,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:05:27,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613219490] [2024-11-28 05:05:27,423 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 05:05:27,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:05:27,431 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 05:05:27,431 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:05:27,500 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:05:27,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:05:27,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613219490] [2024-11-28 05:05:27,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613219490] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:05:27,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:05:27,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 05:05:27,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400304522] [2024-11-28 05:05:27,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:05:27,501 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 05:05:27,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:05:27,501 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 05:05:27,501 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-28 05:05:27,501 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-28 05:05:27,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 166 transitions, 2903 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:27,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:05:27,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-28 05:05:27,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:05:27,891 INFO L124 PetriNetUnfolderBase]: 1080/1835 cut-off events. [2024-11-28 05:05:27,891 INFO L125 PetriNetUnfolderBase]: For 17441/17441 co-relation queries the response was YES. [2024-11-28 05:05:27,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11961 conditions, 1835 events. 1080/1835 cut-off events. For 17441/17441 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 9423 event pairs, 475 based on Foata normal form. 7/1842 useless extension candidates. Maximal degree in co-relation 11901. Up to 1401 conditions per place. [2024-11-28 05:05:27,905 INFO L140 encePairwiseOnDemand]: 26/34 looper letters, 122 selfloop transitions, 50 changer transitions 6/179 dead transitions. [2024-11-28 05:05:27,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 179 transitions, 3241 flow [2024-11-28 05:05:27,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 05:05:27,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-28 05:05:27,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-11-28 05:05:27,905 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.31985294117647056 [2024-11-28 05:05:27,906 INFO L175 Difference]: Start difference. First operand has 193 places, 166 transitions, 2903 flow. Second operand 8 states and 87 transitions. [2024-11-28 05:05:27,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 179 transitions, 3241 flow [2024-11-28 05:05:27,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 179 transitions, 3123 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-11-28 05:05:27,955 INFO L231 Difference]: Finished difference. Result has 187 places, 161 transitions, 2772 flow [2024-11-28 05:05:27,955 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2710, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2772, PETRI_PLACES=187, PETRI_TRANSITIONS=161} [2024-11-28 05:05:27,955 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 157 predicate places. [2024-11-28 05:05:27,955 INFO L471 AbstractCegarLoop]: Abstraction has has 187 places, 161 transitions, 2772 flow [2024-11-28 05:05:27,955 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:27,955 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:05:27,955 INFO L206 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] [2024-11-28 05:05:27,956 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-11-28 05:05:27,956 INFO L396 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 05:05:27,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:05:27,956 INFO L85 PathProgramCache]: Analyzing trace with hash 2126280450, now seen corresponding path program 11 times [2024-11-28 05:05:27,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:05:27,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064925417] [2024-11-28 05:05:27,956 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 05:05:27,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:05:27,971 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 05:05:27,972 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:05:28,211 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:05:28,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:05:28,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064925417] [2024-11-28 05:05:28,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064925417] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:05:28,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575916695] [2024-11-28 05:05:28,212 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 05:05:28,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:05:28,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:05:28,214 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:05:28,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-28 05:05:28,324 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 05:05:28,324 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:05:28,325 INFO L256 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-28 05:05:28,326 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:05:28,352 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-11-28 05:05:28,352 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2024-11-28 05:05:28,360 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:05:28,360 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:05:28,443 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-11-28 05:05:28,443 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 48 [2024-11-28 05:05:28,454 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:05:28,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [575916695] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:05:28,455 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:05:28,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 12 [2024-11-28 05:05:28,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907118266] [2024-11-28 05:05:28,455 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:05:28,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 05:05:28,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:05:28,455 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 05:05:28,455 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-11-28 05:05:28,455 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-28 05:05:28,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 161 transitions, 2772 flow. Second operand has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 12 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:28,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:05:28,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-28 05:05:28,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:05:29,027 INFO L124 PetriNetUnfolderBase]: 1117/1889 cut-off events. [2024-11-28 05:05:29,027 INFO L125 PetriNetUnfolderBase]: For 18833/18833 co-relation queries the response was YES. [2024-11-28 05:05:29,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12391 conditions, 1889 events. 1117/1889 cut-off events. For 18833/18833 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 9725 event pairs, 156 based on Foata normal form. 12/1901 useless extension candidates. Maximal degree in co-relation 12331. Up to 840 conditions per place. [2024-11-28 05:05:29,040 INFO L140 encePairwiseOnDemand]: 21/34 looper letters, 160 selfloop transitions, 65 changer transitions 2/228 dead transitions. [2024-11-28 05:05:29,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 228 transitions, 3861 flow [2024-11-28 05:05:29,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 05:05:29,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-28 05:05:29,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-11-28 05:05:29,041 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3627450980392157 [2024-11-28 05:05:29,041 INFO L175 Difference]: Start difference. First operand has 187 places, 161 transitions, 2772 flow. Second operand 9 states and 111 transitions. [2024-11-28 05:05:29,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 228 transitions, 3861 flow [2024-11-28 05:05:29,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 228 transitions, 3697 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-11-28 05:05:29,090 INFO L231 Difference]: Finished difference. Result has 184 places, 165 transitions, 2855 flow [2024-11-28 05:05:29,090 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2624, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2855, PETRI_PLACES=184, PETRI_TRANSITIONS=165} [2024-11-28 05:05:29,090 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 154 predicate places. [2024-11-28 05:05:29,090 INFO L471 AbstractCegarLoop]: Abstraction has has 184 places, 165 transitions, 2855 flow [2024-11-28 05:05:29,091 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 12 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:29,091 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:05:29,091 INFO L206 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] [2024-11-28 05:05:29,101 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-28 05:05:29,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2024-11-28 05:05:29,292 INFO L396 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 05:05:29,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:05:29,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1703970578, now seen corresponding path program 11 times [2024-11-28 05:05:29,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:05:29,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158160780] [2024-11-28 05:05:29,292 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 05:05:29,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:05:29,302 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 05:05:29,303 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:05:29,472 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:05:29,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:05:29,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158160780] [2024-11-28 05:05:29,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158160780] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:05:29,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [686047459] [2024-11-28 05:05:29,473 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 05:05:29,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:05:29,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:05:29,475 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:05:29,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-28 05:05:29,578 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 05:05:29,578 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:05:29,580 INFO L256 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-28 05:05:29,580 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:05:29,610 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-11-28 05:05:29,610 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2024-11-28 05:05:29,617 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:05:29,617 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:05:29,704 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-11-28 05:05:29,705 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 56 [2024-11-28 05:05:29,730 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:05:29,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [686047459] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:05:29,731 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:05:29,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 13 [2024-11-28 05:05:29,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402875825] [2024-11-28 05:05:29,731 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:05:29,731 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 05:05:29,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:05:29,732 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 05:05:29,732 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-11-28 05:05:29,732 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-28 05:05:29,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 165 transitions, 2855 flow. Second operand has 13 states, 13 states have (on average 5.6923076923076925) internal successors, (74), 13 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:29,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:05:29,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-28 05:05:29,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:05:30,283 INFO L124 PetriNetUnfolderBase]: 1143/1933 cut-off events. [2024-11-28 05:05:30,283 INFO L125 PetriNetUnfolderBase]: For 20221/20221 co-relation queries the response was YES. [2024-11-28 05:05:30,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12903 conditions, 1933 events. 1143/1933 cut-off events. For 20221/20221 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 9938 event pairs, 440 based on Foata normal form. 18/1951 useless extension candidates. Maximal degree in co-relation 12843. Up to 1334 conditions per place. [2024-11-28 05:05:30,297 INFO L140 encePairwiseOnDemand]: 20/34 looper letters, 138 selfloop transitions, 66 changer transitions 0/205 dead transitions. [2024-11-28 05:05:30,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 205 transitions, 3635 flow [2024-11-28 05:05:30,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 05:05:30,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-28 05:05:30,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-11-28 05:05:30,298 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.34967320261437906 [2024-11-28 05:05:30,298 INFO L175 Difference]: Start difference. First operand has 184 places, 165 transitions, 2855 flow. Second operand 9 states and 107 transitions. [2024-11-28 05:05:30,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 205 transitions, 3635 flow [2024-11-28 05:05:30,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 205 transitions, 3491 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-11-28 05:05:30,341 INFO L231 Difference]: Finished difference. Result has 187 places, 170 transitions, 2974 flow [2024-11-28 05:05:30,341 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2721, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2974, PETRI_PLACES=187, PETRI_TRANSITIONS=170} [2024-11-28 05:05:30,341 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 157 predicate places. [2024-11-28 05:05:30,342 INFO L471 AbstractCegarLoop]: Abstraction has has 187 places, 170 transitions, 2974 flow [2024-11-28 05:05:30,342 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.6923076923076925) internal successors, (74), 13 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:30,342 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:05:30,342 INFO L206 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] [2024-11-28 05:05:30,349 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-28 05:05:30,542 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2024-11-28 05:05:30,542 INFO L396 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 05:05:30,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:05:30,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1078828350, now seen corresponding path program 12 times [2024-11-28 05:05:30,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:05:30,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615606279] [2024-11-28 05:05:30,543 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 05:05:30,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:05:30,552 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-28 05:05:30,552 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:05:30,808 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:05:30,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:05:30,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615606279] [2024-11-28 05:05:30,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615606279] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:05:30,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:05:30,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 05:05:30,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151893703] [2024-11-28 05:05:30,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:05:30,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 05:05:30,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:05:30,809 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 05:05:30,809 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-28 05:05:30,810 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-28 05:05:30,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 170 transitions, 2974 flow. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:30,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:05:30,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-28 05:05:30,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:05:31,452 INFO L124 PetriNetUnfolderBase]: 1235/2073 cut-off events. [2024-11-28 05:05:31,452 INFO L125 PetriNetUnfolderBase]: For 22879/22879 co-relation queries the response was YES. [2024-11-28 05:05:31,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14195 conditions, 2073 events. 1235/2073 cut-off events. For 22879/22879 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 10809 event pairs, 401 based on Foata normal form. 12/2085 useless extension candidates. Maximal degree in co-relation 14135. Up to 1359 conditions per place. [2024-11-28 05:05:31,466 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 154 selfloop transitions, 72 changer transitions 0/227 dead transitions. [2024-11-28 05:05:31,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 227 transitions, 4087 flow [2024-11-28 05:05:31,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 05:05:31,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-28 05:05:31,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-11-28 05:05:31,467 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3464052287581699 [2024-11-28 05:05:31,467 INFO L175 Difference]: Start difference. First operand has 187 places, 170 transitions, 2974 flow. Second operand 9 states and 106 transitions. [2024-11-28 05:05:31,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 227 transitions, 4087 flow [2024-11-28 05:05:31,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 227 transitions, 3952 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-11-28 05:05:31,527 INFO L231 Difference]: Finished difference. Result has 192 places, 177 transitions, 3186 flow [2024-11-28 05:05:31,527 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2847, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3186, PETRI_PLACES=192, PETRI_TRANSITIONS=177} [2024-11-28 05:05:31,528 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 162 predicate places. [2024-11-28 05:05:31,528 INFO L471 AbstractCegarLoop]: Abstraction has has 192 places, 177 transitions, 3186 flow [2024-11-28 05:05:31,528 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:31,528 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:05:31,528 INFO L206 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] [2024-11-28 05:05:31,528 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-11-28 05:05:31,528 INFO L396 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 05:05:31,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:05:31,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1094582766, now seen corresponding path program 13 times [2024-11-28 05:05:31,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:05:31,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008730969] [2024-11-28 05:05:31,529 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 05:05:31,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:05:31,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:05:31,758 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:05:31,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:05:31,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008730969] [2024-11-28 05:05:31,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008730969] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:05:31,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1525941110] [2024-11-28 05:05:31,758 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 05:05:31,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:05:31,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:05:31,761 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:05:31,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-28 05:05:31,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:05:31,869 INFO L256 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-28 05:05:31,870 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:05:31,927 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-11-28 05:05:31,928 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2024-11-28 05:05:31,938 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:05:31,938 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:05:32,015 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-11-28 05:05:32,015 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 56 [2024-11-28 05:05:32,037 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:05:32,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1525941110] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:05:32,038 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:05:32,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 18 [2024-11-28 05:05:32,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400200231] [2024-11-28 05:05:32,038 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:05:32,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-28 05:05:32,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:05:32,039 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-28 05:05:32,039 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2024-11-28 05:05:32,039 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-28 05:05:32,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 177 transitions, 3186 flow. Second operand has 18 states, 18 states have (on average 5.555555555555555) internal successors, (100), 18 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:32,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:05:32,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-28 05:05:32,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:05:32,619 INFO L124 PetriNetUnfolderBase]: 1255/2105 cut-off events. [2024-11-28 05:05:32,619 INFO L125 PetriNetUnfolderBase]: For 25909/25909 co-relation queries the response was YES. [2024-11-28 05:05:32,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14588 conditions, 2105 events. 1255/2105 cut-off events. For 25909/25909 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 10932 event pairs, 456 based on Foata normal form. 12/2117 useless extension candidates. Maximal degree in co-relation 14526. Up to 1391 conditions per place. [2024-11-28 05:05:32,634 INFO L140 encePairwiseOnDemand]: 21/34 looper letters, 149 selfloop transitions, 70 changer transitions 1/221 dead transitions. [2024-11-28 05:05:32,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 221 transitions, 4137 flow [2024-11-28 05:05:32,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 05:05:32,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-28 05:05:32,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-11-28 05:05:32,635 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3205882352941177 [2024-11-28 05:05:32,635 INFO L175 Difference]: Start difference. First operand has 192 places, 177 transitions, 3186 flow. Second operand 10 states and 109 transitions. [2024-11-28 05:05:32,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 221 transitions, 4137 flow [2024-11-28 05:05:32,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 221 transitions, 4011 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-11-28 05:05:32,694 INFO L231 Difference]: Finished difference. Result has 198 places, 181 transitions, 3322 flow [2024-11-28 05:05:32,694 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=3060, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3322, PETRI_PLACES=198, PETRI_TRANSITIONS=181} [2024-11-28 05:05:32,695 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 168 predicate places. [2024-11-28 05:05:32,695 INFO L471 AbstractCegarLoop]: Abstraction has has 198 places, 181 transitions, 3322 flow [2024-11-28 05:05:32,695 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.555555555555555) internal successors, (100), 18 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:32,695 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:05:32,695 INFO L206 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] [2024-11-28 05:05:32,701 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-28 05:05:32,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:05:32,895 INFO L396 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 05:05:32,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:05:32,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1167066964, now seen corresponding path program 14 times [2024-11-28 05:05:32,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:05:32,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154795582] [2024-11-28 05:05:32,896 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:05:32,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:05:32,906 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 05:05:32,906 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:05:33,118 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:05:33,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:05:33,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154795582] [2024-11-28 05:05:33,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154795582] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:05:33,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:05:33,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 05:05:33,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417488351] [2024-11-28 05:05:33,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:05:33,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 05:05:33,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:05:33,119 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 05:05:33,119 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-28 05:05:33,119 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-28 05:05:33,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 181 transitions, 3322 flow. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:33,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:05:33,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-28 05:05:33,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:05:33,566 INFO L124 PetriNetUnfolderBase]: 1230/2066 cut-off events. [2024-11-28 05:05:33,567 INFO L125 PetriNetUnfolderBase]: For 24296/24296 co-relation queries the response was YES. [2024-11-28 05:05:33,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14371 conditions, 2066 events. 1230/2066 cut-off events. For 24296/24296 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 10785 event pairs, 414 based on Foata normal form. 12/2078 useless extension candidates. Maximal degree in co-relation 14307. Up to 1440 conditions per place. [2024-11-28 05:05:33,580 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 148 selfloop transitions, 69 changer transitions 0/218 dead transitions. [2024-11-28 05:05:33,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 218 transitions, 4059 flow [2024-11-28 05:05:33,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 05:05:33,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-28 05:05:33,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-11-28 05:05:33,581 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3202614379084967 [2024-11-28 05:05:33,581 INFO L175 Difference]: Start difference. First operand has 198 places, 181 transitions, 3322 flow. Second operand 9 states and 98 transitions. [2024-11-28 05:05:33,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 218 transitions, 4059 flow [2024-11-28 05:05:33,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 218 transitions, 3902 flow, removed 32 selfloop flow, removed 8 redundant places. [2024-11-28 05:05:33,639 INFO L231 Difference]: Finished difference. Result has 201 places, 183 transitions, 3360 flow [2024-11-28 05:05:33,639 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=3165, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3360, PETRI_PLACES=201, PETRI_TRANSITIONS=183} [2024-11-28 05:05:33,640 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 171 predicate places. [2024-11-28 05:05:33,640 INFO L471 AbstractCegarLoop]: Abstraction has has 201 places, 183 transitions, 3360 flow [2024-11-28 05:05:33,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:33,640 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:05:33,640 INFO L206 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] [2024-11-28 05:05:33,640 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-11-28 05:05:33,640 INFO L396 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 05:05:33,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:05:33,641 INFO L85 PathProgramCache]: Analyzing trace with hash 39407728, now seen corresponding path program 15 times [2024-11-28 05:05:33,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:05:33,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756661695] [2024-11-28 05:05:33,641 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 05:05:33,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:05:33,662 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 05:05:33,662 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:05:33,896 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:05:33,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:05:33,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756661695] [2024-11-28 05:05:33,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756661695] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:05:33,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221201821] [2024-11-28 05:05:33,896 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 05:05:33,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:05:33,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:05:33,898 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:05:33,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-28 05:05:34,005 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 05:05:34,005 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:05:34,006 INFO L256 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-28 05:05:34,007 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:05:34,075 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:05:34,075 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 21 [2024-11-28 05:05:34,095 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:05:34,095 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:05:34,176 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-11-28 05:05:34,176 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 56 [2024-11-28 05:05:34,205 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:05:34,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [221201821] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 05:05:34,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:05:34,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9, 9] total 17 [2024-11-28 05:05:34,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520664165] [2024-11-28 05:05:34,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:05:34,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 05:05:34,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:05:34,206 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 05:05:34,206 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2024-11-28 05:05:34,206 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-28 05:05:34,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 183 transitions, 3360 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:34,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:05:34,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-28 05:05:34,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:05:34,742 INFO L124 PetriNetUnfolderBase]: 1320/2222 cut-off events. [2024-11-28 05:05:34,742 INFO L125 PetriNetUnfolderBase]: For 26210/26210 co-relation queries the response was YES. [2024-11-28 05:05:34,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15627 conditions, 2222 events. 1320/2222 cut-off events. For 26210/26210 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 11764 event pairs, 470 based on Foata normal form. 12/2234 useless extension candidates. Maximal degree in co-relation 15562. Up to 1481 conditions per place. [2024-11-28 05:05:34,755 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 161 selfloop transitions, 71 changer transitions 0/233 dead transitions. [2024-11-28 05:05:34,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 233 transitions, 4341 flow [2024-11-28 05:05:34,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 05:05:34,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-28 05:05:34,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-11-28 05:05:34,757 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3660130718954248 [2024-11-28 05:05:34,757 INFO L175 Difference]: Start difference. First operand has 201 places, 183 transitions, 3360 flow. Second operand 9 states and 112 transitions. [2024-11-28 05:05:34,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 233 transitions, 4341 flow [2024-11-28 05:05:34,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 233 transitions, 4198 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-28 05:05:34,815 INFO L231 Difference]: Finished difference. Result has 207 places, 193 transitions, 3650 flow [2024-11-28 05:05:34,815 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=3229, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3650, PETRI_PLACES=207, PETRI_TRANSITIONS=193} [2024-11-28 05:05:34,818 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 177 predicate places. [2024-11-28 05:05:34,818 INFO L471 AbstractCegarLoop]: Abstraction has has 207 places, 193 transitions, 3650 flow [2024-11-28 05:05:34,818 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:34,818 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:05:34,818 INFO L206 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] [2024-11-28 05:05:34,834 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-28 05:05:35,019 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:05:35,019 INFO L396 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 05:05:35,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:05:35,020 INFO L85 PathProgramCache]: Analyzing trace with hash 954489216, now seen corresponding path program 16 times [2024-11-28 05:05:35,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:05:35,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252472882] [2024-11-28 05:05:35,020 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 05:05:35,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:05:35,027 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 05:05:35,027 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:05:35,097 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:05:35,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:05:35,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252472882] [2024-11-28 05:05:35,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252472882] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:05:35,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:05:35,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 05:05:35,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262923767] [2024-11-28 05:05:35,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:05:35,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 05:05:35,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:05:35,098 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 05:05:35,098 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-28 05:05:35,098 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-28 05:05:35,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 193 transitions, 3650 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:35,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:05:35,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-28 05:05:35,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:05:35,510 INFO L124 PetriNetUnfolderBase]: 1308/2210 cut-off events. [2024-11-28 05:05:35,510 INFO L125 PetriNetUnfolderBase]: For 25646/25646 co-relation queries the response was YES. [2024-11-28 05:05:35,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15411 conditions, 2210 events. 1308/2210 cut-off events. For 25646/25646 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 11731 event pairs, 509 based on Foata normal form. 12/2222 useless extension candidates. Maximal degree in co-relation 15342. Up to 1575 conditions per place. [2024-11-28 05:05:35,526 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 146 selfloop transitions, 71 changer transitions 1/219 dead transitions. [2024-11-28 05:05:35,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 219 transitions, 4275 flow [2024-11-28 05:05:35,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 05:05:35,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-28 05:05:35,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 93 transitions. [2024-11-28 05:05:35,527 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3907563025210084 [2024-11-28 05:05:35,527 INFO L175 Difference]: Start difference. First operand has 207 places, 193 transitions, 3650 flow. Second operand 7 states and 93 transitions. [2024-11-28 05:05:35,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 219 transitions, 4275 flow [2024-11-28 05:05:35,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 219 transitions, 4147 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-11-28 05:05:35,587 INFO L231 Difference]: Finished difference. Result has 208 places, 193 transitions, 3653 flow [2024-11-28 05:05:35,587 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=3485, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3653, PETRI_PLACES=208, PETRI_TRANSITIONS=193} [2024-11-28 05:05:35,587 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 178 predicate places. [2024-11-28 05:05:35,587 INFO L471 AbstractCegarLoop]: Abstraction has has 208 places, 193 transitions, 3653 flow [2024-11-28 05:05:35,587 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:35,587 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:05:35,587 INFO L206 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] [2024-11-28 05:05:35,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-11-28 05:05:35,588 INFO L396 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 05:05:35,588 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:05:35,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1537731684, now seen corresponding path program 12 times [2024-11-28 05:05:35,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:05:35,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559869161] [2024-11-28 05:05:35,588 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 05:05:35,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:05:35,609 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-28 05:05:35,609 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:05:35,896 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:05:35,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:05:35,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559869161] [2024-11-28 05:05:35,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559869161] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:05:35,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1993446246] [2024-11-28 05:05:35,897 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 05:05:35,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:05:35,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:05:35,900 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:05:35,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-28 05:05:36,022 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-28 05:05:36,022 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:05:36,024 INFO L256 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-28 05:05:36,025 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:05:36,134 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:05:36,134 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 21 [2024-11-28 05:05:36,157 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:05:36,157 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:05:36,273 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-11-28 05:05:36,273 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 48 [2024-11-28 05:05:36,301 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:05:36,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1993446246] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 05:05:36,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:05:36,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9, 9] total 18 [2024-11-28 05:05:36,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630422993] [2024-11-28 05:05:36,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:05:36,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 05:05:36,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:05:36,303 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 05:05:36,303 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2024-11-28 05:05:36,303 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-28 05:05:36,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 193 transitions, 3653 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:36,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:05:36,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-28 05:05:36,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:05:37,065 INFO L124 PetriNetUnfolderBase]: 1388/2362 cut-off events. [2024-11-28 05:05:37,066 INFO L125 PetriNetUnfolderBase]: For 26334/26334 co-relation queries the response was YES. [2024-11-28 05:05:37,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16117 conditions, 2362 events. 1388/2362 cut-off events. For 26334/26334 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 12919 event pairs, 389 based on Foata normal form. 18/2380 useless extension candidates. Maximal degree in co-relation 16050. Up to 1387 conditions per place. [2024-11-28 05:05:37,082 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 185 selfloop transitions, 80 changer transitions 0/266 dead transitions. [2024-11-28 05:05:37,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 266 transitions, 4712 flow [2024-11-28 05:05:37,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 05:05:37,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-28 05:05:37,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-11-28 05:05:37,083 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3689839572192513 [2024-11-28 05:05:37,083 INFO L175 Difference]: Start difference. First operand has 208 places, 193 transitions, 3653 flow. Second operand 11 states and 138 transitions. [2024-11-28 05:05:37,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 266 transitions, 4712 flow [2024-11-28 05:05:37,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 266 transitions, 4497 flow, removed 6 selfloop flow, removed 14 redundant places. [2024-11-28 05:05:37,146 INFO L231 Difference]: Finished difference. Result has 207 places, 198 transitions, 3728 flow [2024-11-28 05:05:37,146 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=3446, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3728, PETRI_PLACES=207, PETRI_TRANSITIONS=198} [2024-11-28 05:05:37,146 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 177 predicate places. [2024-11-28 05:05:37,146 INFO L471 AbstractCegarLoop]: Abstraction has has 207 places, 198 transitions, 3728 flow [2024-11-28 05:05:37,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:37,146 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:05:37,146 INFO L206 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] [2024-11-28 05:05:37,153 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-28 05:05:37,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2024-11-28 05:05:37,347 INFO L396 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 05:05:37,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:05:37,347 INFO L85 PathProgramCache]: Analyzing trace with hash -217355040, now seen corresponding path program 13 times [2024-11-28 05:05:37,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:05:37,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692638981] [2024-11-28 05:05:37,348 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 05:05:37,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:05:37,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:05:37,525 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:05:37,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:05:37,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692638981] [2024-11-28 05:05:37,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692638981] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:05:37,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:05:37,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 05:05:37,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22264846] [2024-11-28 05:05:37,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:05:37,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 05:05:37,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:05:37,527 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 05:05:37,527 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-28 05:05:37,527 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-28 05:05:37,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 198 transitions, 3728 flow. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:37,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:05:37,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-28 05:05:37,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:05:38,079 INFO L124 PetriNetUnfolderBase]: 1374/2348 cut-off events. [2024-11-28 05:05:38,079 INFO L125 PetriNetUnfolderBase]: For 24712/24712 co-relation queries the response was YES. [2024-11-28 05:05:38,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15905 conditions, 2348 events. 1374/2348 cut-off events. For 24712/24712 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 12899 event pairs, 407 based on Foata normal form. 14/2362 useless extension candidates. Maximal degree in co-relation 15845. Up to 1380 conditions per place. [2024-11-28 05:05:38,092 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 157 selfloop transitions, 67 changer transitions 17/242 dead transitions. [2024-11-28 05:05:38,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 242 transitions, 4392 flow [2024-11-28 05:05:38,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 05:05:38,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-28 05:05:38,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 123 transitions. [2024-11-28 05:05:38,093 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3014705882352941 [2024-11-28 05:05:38,093 INFO L175 Difference]: Start difference. First operand has 207 places, 198 transitions, 3728 flow. Second operand 12 states and 123 transitions. [2024-11-28 05:05:38,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 242 transitions, 4392 flow [2024-11-28 05:05:38,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 242 transitions, 4228 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-11-28 05:05:38,146 INFO L231 Difference]: Finished difference. Result has 212 places, 185 transitions, 3413 flow [2024-11-28 05:05:38,146 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=3456, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3413, PETRI_PLACES=212, PETRI_TRANSITIONS=185} [2024-11-28 05:05:38,146 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 182 predicate places. [2024-11-28 05:05:38,146 INFO L471 AbstractCegarLoop]: Abstraction has has 212 places, 185 transitions, 3413 flow [2024-11-28 05:05:38,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:38,146 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:05:38,146 INFO L206 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] [2024-11-28 05:05:38,146 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-11-28 05:05:38,147 INFO L396 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 05:05:38,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:05:38,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1773728578, now seen corresponding path program 17 times [2024-11-28 05:05:38,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:05:38,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87558611] [2024-11-28 05:05:38,147 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 05:05:38,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:05:38,161 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 05:05:38,161 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:05:38,405 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:05:38,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:05:38,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87558611] [2024-11-28 05:05:38,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87558611] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:05:38,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564278448] [2024-11-28 05:05:38,405 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 05:05:38,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:05:38,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:05:38,409 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:05:38,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-28 05:05:38,523 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 05:05:38,523 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:05:38,526 INFO L256 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-28 05:05:38,527 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:05:38,642 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:05:38,642 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 21 [2024-11-28 05:05:38,667 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:05:38,667 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:05:38,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [564278448] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:05:38,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:05:38,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8] total 16 [2024-11-28 05:05:38,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162527944] [2024-11-28 05:05:38,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:05:38,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 05:05:38,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:05:38,668 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 05:05:38,668 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2024-11-28 05:05:38,668 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-28 05:05:38,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 185 transitions, 3413 flow. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:38,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:05:38,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-28 05:05:38,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:05:39,210 INFO L124 PetriNetUnfolderBase]: 1323/2256 cut-off events. [2024-11-28 05:05:39,210 INFO L125 PetriNetUnfolderBase]: For 21957/21957 co-relation queries the response was YES. [2024-11-28 05:05:39,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15186 conditions, 2256 events. 1323/2256 cut-off events. For 21957/21957 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 12235 event pairs, 443 based on Foata normal form. 7/2263 useless extension candidates. Maximal degree in co-relation 15127. Up to 1590 conditions per place. [2024-11-28 05:05:39,226 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 136 selfloop transitions, 69 changer transitions 6/212 dead transitions. [2024-11-28 05:05:39,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 212 transitions, 3968 flow [2024-11-28 05:05:39,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 05:05:39,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-28 05:05:39,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 98 transitions. [2024-11-28 05:05:39,226 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.28823529411764703 [2024-11-28 05:05:39,227 INFO L175 Difference]: Start difference. First operand has 212 places, 185 transitions, 3413 flow. Second operand 10 states and 98 transitions. [2024-11-28 05:05:39,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 212 transitions, 3968 flow [2024-11-28 05:05:39,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 212 transitions, 3823 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-28 05:05:39,282 INFO L231 Difference]: Finished difference. Result has 202 places, 181 transitions, 3288 flow [2024-11-28 05:05:39,282 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=3212, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3288, PETRI_PLACES=202, PETRI_TRANSITIONS=181} [2024-11-28 05:05:39,283 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 172 predicate places. [2024-11-28 05:05:39,283 INFO L471 AbstractCegarLoop]: Abstraction has has 202 places, 181 transitions, 3288 flow [2024-11-28 05:05:39,283 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:39,283 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:05:39,283 INFO L206 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] [2024-11-28 05:05:39,292 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-11-28 05:05:39,483 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:05:39,483 INFO L396 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 05:05:39,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:05:39,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1619130740, now seen corresponding path program 14 times [2024-11-28 05:05:39,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:05:39,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965660181] [2024-11-28 05:05:39,484 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:05:39,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:05:39,494 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 05:05:39,494 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:05:39,686 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:05:39,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:05:39,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965660181] [2024-11-28 05:05:39,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965660181] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:05:39,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:05:39,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 05:05:39,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623881788] [2024-11-28 05:05:39,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:05:39,687 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 05:05:39,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:05:39,687 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 05:05:39,687 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-28 05:05:39,687 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-28 05:05:39,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 181 transitions, 3288 flow. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:39,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:05:39,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-28 05:05:39,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:05:40,176 INFO L124 PetriNetUnfolderBase]: 1314/2240 cut-off events. [2024-11-28 05:05:40,176 INFO L125 PetriNetUnfolderBase]: For 21302/21302 co-relation queries the response was YES. [2024-11-28 05:05:40,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15034 conditions, 2240 events. 1314/2240 cut-off events. For 21302/21302 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 12084 event pairs, 455 based on Foata normal form. 6/2246 useless extension candidates. Maximal degree in co-relation 14975. Up to 1580 conditions per place. [2024-11-28 05:05:40,191 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 134 selfloop transitions, 67 changer transitions 5/207 dead transitions. [2024-11-28 05:05:40,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 207 transitions, 3831 flow [2024-11-28 05:05:40,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 05:05:40,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-28 05:05:40,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 96 transitions. [2024-11-28 05:05:40,192 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2823529411764706 [2024-11-28 05:05:40,192 INFO L175 Difference]: Start difference. First operand has 202 places, 181 transitions, 3288 flow. Second operand 10 states and 96 transitions. [2024-11-28 05:05:40,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 207 transitions, 3831 flow [2024-11-28 05:05:40,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 207 transitions, 3695 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-11-28 05:05:40,250 INFO L231 Difference]: Finished difference. Result has 203 places, 177 transitions, 3182 flow [2024-11-28 05:05:40,251 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=3097, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3182, PETRI_PLACES=203, PETRI_TRANSITIONS=177} [2024-11-28 05:05:40,251 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 173 predicate places. [2024-11-28 05:05:40,251 INFO L471 AbstractCegarLoop]: Abstraction has has 203 places, 177 transitions, 3182 flow [2024-11-28 05:05:40,252 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:40,252 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:05:40,252 INFO L206 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] [2024-11-28 05:05:40,252 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-11-28 05:05:40,252 INFO L396 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 05:05:40,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:05:40,253 INFO L85 PathProgramCache]: Analyzing trace with hash -115330228, now seen corresponding path program 15 times [2024-11-28 05:05:40,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:05:40,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147803983] [2024-11-28 05:05:40,253 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 05:05:40,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:05:40,273 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 05:05:40,273 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:05:40,525 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:05:40,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:05:40,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147803983] [2024-11-28 05:05:40,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147803983] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:05:40,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:05:40,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 05:05:40,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448487077] [2024-11-28 05:05:40,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:05:40,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 05:05:40,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:05:40,527 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 05:05:40,527 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-28 05:05:40,527 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-28 05:05:40,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 177 transitions, 3182 flow. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:40,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:05:40,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-28 05:05:40,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:05:40,998 INFO L124 PetriNetUnfolderBase]: 1245/2105 cut-off events. [2024-11-28 05:05:40,998 INFO L125 PetriNetUnfolderBase]: For 20314/20314 co-relation queries the response was YES. [2024-11-28 05:05:41,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14282 conditions, 2105 events. 1245/2105 cut-off events. For 20314/20314 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 11114 event pairs, 415 based on Foata normal form. 6/2111 useless extension candidates. Maximal degree in co-relation 14223. Up to 1468 conditions per place. [2024-11-28 05:05:41,011 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 130 selfloop transitions, 62 changer transitions 11/204 dead transitions. [2024-11-28 05:05:41,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 204 transitions, 3701 flow [2024-11-28 05:05:41,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 05:05:41,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-28 05:05:41,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 102 transitions. [2024-11-28 05:05:41,012 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2727272727272727 [2024-11-28 05:05:41,012 INFO L175 Difference]: Start difference. First operand has 203 places, 177 transitions, 3182 flow. Second operand 11 states and 102 transitions. [2024-11-28 05:05:41,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 204 transitions, 3701 flow [2024-11-28 05:05:41,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 204 transitions, 3566 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-28 05:05:41,062 INFO L231 Difference]: Finished difference. Result has 202 places, 169 transitions, 2998 flow [2024-11-28 05:05:41,062 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2970, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2998, PETRI_PLACES=202, PETRI_TRANSITIONS=169} [2024-11-28 05:05:41,062 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 172 predicate places. [2024-11-28 05:05:41,062 INFO L471 AbstractCegarLoop]: Abstraction has has 202 places, 169 transitions, 2998 flow [2024-11-28 05:05:41,062 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:41,062 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:05:41,062 INFO L206 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] [2024-11-28 05:05:41,062 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-11-28 05:05:41,063 INFO L396 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 05:05:41,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:05:41,063 INFO L85 PathProgramCache]: Analyzing trace with hash -635679432, now seen corresponding path program 16 times [2024-11-28 05:05:41,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:05:41,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32525360] [2024-11-28 05:05:41,063 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 05:05:41,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:05:41,070 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 05:05:41,070 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:05:41,145 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:05:41,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:05:41,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32525360] [2024-11-28 05:05:41,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32525360] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:05:41,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321077916] [2024-11-28 05:05:41,146 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 05:05:41,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:05:41,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:05:41,147 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:05:41,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-28 05:05:41,249 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 05:05:41,249 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:05:41,250 INFO L256 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-28 05:05:41,251 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:05:41,285 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:05:41,285 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 25 [2024-11-28 05:05:41,301 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:05:41,302 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:05:41,374 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-11-28 05:05:41,374 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 56 [2024-11-28 05:05:41,396 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:05:41,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1321077916] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 05:05:41,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:05:41,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 13 [2024-11-28 05:05:41,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658501560] [2024-11-28 05:05:41,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:05:41,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 05:05:41,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:05:41,397 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 05:05:41,398 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2024-11-28 05:05:41,398 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-28 05:05:41,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 169 transitions, 2998 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:41,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:05:41,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-28 05:05:41,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:05:41,955 INFO L124 PetriNetUnfolderBase]: 1328/2260 cut-off events. [2024-11-28 05:05:41,956 INFO L125 PetriNetUnfolderBase]: For 24136/24136 co-relation queries the response was YES. [2024-11-28 05:05:41,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15172 conditions, 2260 events. 1328/2260 cut-off events. For 24136/24136 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 12141 event pairs, 459 based on Foata normal form. 18/2278 useless extension candidates. Maximal degree in co-relation 15113. Up to 1467 conditions per place. [2024-11-28 05:05:41,970 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 153 selfloop transitions, 66 changer transitions 0/220 dead transitions. [2024-11-28 05:05:41,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 220 transitions, 3857 flow [2024-11-28 05:05:41,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 05:05:41,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-28 05:05:41,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-11-28 05:05:41,971 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3588235294117647 [2024-11-28 05:05:41,971 INFO L175 Difference]: Start difference. First operand has 202 places, 169 transitions, 2998 flow. Second operand 10 states and 122 transitions. [2024-11-28 05:05:41,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 220 transitions, 3857 flow [2024-11-28 05:05:42,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 220 transitions, 3679 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-11-28 05:05:42,018 INFO L231 Difference]: Finished difference. Result has 193 places, 175 transitions, 3101 flow [2024-11-28 05:05:42,019 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2832, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3101, PETRI_PLACES=193, PETRI_TRANSITIONS=175} [2024-11-28 05:05:42,019 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 163 predicate places. [2024-11-28 05:05:42,019 INFO L471 AbstractCegarLoop]: Abstraction has has 193 places, 175 transitions, 3101 flow [2024-11-28 05:05:42,019 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:42,019 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:05:42,019 INFO L206 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] [2024-11-28 05:05:42,025 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-11-28 05:05:42,219 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:05:42,220 INFO L396 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 05:05:42,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:05:42,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1550760920, now seen corresponding path program 17 times [2024-11-28 05:05:42,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:05:42,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641940947] [2024-11-28 05:05:42,220 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 05:05:42,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:05:42,231 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 05:05:42,231 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:05:42,462 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:05:42,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:05:42,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641940947] [2024-11-28 05:05:42,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641940947] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:05:42,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341644152] [2024-11-28 05:05:42,462 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 05:05:42,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:05:42,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:05:42,466 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:05:42,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-28 05:05:42,586 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 05:05:42,586 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:05:42,588 INFO L256 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-28 05:05:42,589 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:05:42,625 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:05:42,625 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 25 [2024-11-28 05:05:42,646 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:05:42,646 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:05:42,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [341644152] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:05:42,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:05:42,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 11 [2024-11-28 05:05:42,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309046060] [2024-11-28 05:05:42,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:05:42,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 05:05:42,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:05:42,648 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 05:05:42,648 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-28 05:05:42,648 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-28 05:05:42,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 175 transitions, 3101 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:42,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:05:42,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-28 05:05:42,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:05:43,234 INFO L124 PetriNetUnfolderBase]: 1310/2242 cut-off events. [2024-11-28 05:05:43,234 INFO L125 PetriNetUnfolderBase]: For 22027/22027 co-relation queries the response was YES. [2024-11-28 05:05:43,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14816 conditions, 2242 events. 1310/2242 cut-off events. For 22027/22027 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 12105 event pairs, 491 based on Foata normal form. 18/2260 useless extension candidates. Maximal degree in co-relation 14758. Up to 1595 conditions per place. [2024-11-28 05:05:43,247 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 131 selfloop transitions, 66 changer transitions 1/199 dead transitions. [2024-11-28 05:05:43,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 199 transitions, 3626 flow [2024-11-28 05:05:43,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 05:05:43,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-28 05:05:43,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 92 transitions. [2024-11-28 05:05:43,247 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3865546218487395 [2024-11-28 05:05:43,247 INFO L175 Difference]: Start difference. First operand has 193 places, 175 transitions, 3101 flow. Second operand 7 states and 92 transitions. [2024-11-28 05:05:43,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 199 transitions, 3626 flow [2024-11-28 05:05:43,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 199 transitions, 3556 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-11-28 05:05:43,286 INFO L231 Difference]: Finished difference. Result has 196 places, 174 transitions, 3127 flow [2024-11-28 05:05:43,286 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2968, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3127, PETRI_PLACES=196, PETRI_TRANSITIONS=174} [2024-11-28 05:05:43,286 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 166 predicate places. [2024-11-28 05:05:43,286 INFO L471 AbstractCegarLoop]: Abstraction has has 196 places, 174 transitions, 3127 flow [2024-11-28 05:05:43,286 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:43,286 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:05:43,286 INFO L206 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] [2024-11-28 05:05:43,292 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-11-28 05:05:43,487 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:05:43,487 INFO L396 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 05:05:43,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:05:43,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1780921312, now seen corresponding path program 18 times [2024-11-28 05:05:43,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:05:43,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604667955] [2024-11-28 05:05:43,487 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 05:05:43,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:05:43,496 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-28 05:05:43,496 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:05:43,729 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:05:43,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:05:43,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604667955] [2024-11-28 05:05:43,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604667955] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:05:43,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:05:43,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 05:05:43,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015429880] [2024-11-28 05:05:43,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:05:43,730 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 05:05:43,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:05:43,730 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 05:05:43,730 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-28 05:05:43,730 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-28 05:05:43,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 174 transitions, 3127 flow. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:43,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:05:43,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-28 05:05:43,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:05:44,285 INFO L124 PetriNetUnfolderBase]: 1243/2113 cut-off events. [2024-11-28 05:05:44,285 INFO L125 PetriNetUnfolderBase]: For 21009/21009 co-relation queries the response was YES. [2024-11-28 05:05:44,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14182 conditions, 2113 events. 1243/2113 cut-off events. For 21009/21009 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 11173 event pairs, 473 based on Foata normal form. 6/2119 useless extension candidates. Maximal degree in co-relation 14124. Up to 1486 conditions per place. [2024-11-28 05:05:44,302 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 119 selfloop transitions, 64 changer transitions 5/189 dead transitions. [2024-11-28 05:05:44,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 189 transitions, 3519 flow [2024-11-28 05:05:44,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 05:05:44,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-28 05:05:44,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 96 transitions. [2024-11-28 05:05:44,303 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2823529411764706 [2024-11-28 05:05:44,303 INFO L175 Difference]: Start difference. First operand has 196 places, 174 transitions, 3127 flow. Second operand 10 states and 96 transitions. [2024-11-28 05:05:44,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 189 transitions, 3519 flow [2024-11-28 05:05:44,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 189 transitions, 3329 flow, removed 2 selfloop flow, removed 13 redundant places. [2024-11-28 05:05:44,340 INFO L231 Difference]: Finished difference. Result has 192 places, 169 transitions, 2939 flow [2024-11-28 05:05:44,340 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2863, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2939, PETRI_PLACES=192, PETRI_TRANSITIONS=169} [2024-11-28 05:05:44,341 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 162 predicate places. [2024-11-28 05:05:44,341 INFO L471 AbstractCegarLoop]: Abstraction has has 192 places, 169 transitions, 2939 flow [2024-11-28 05:05:44,341 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:44,341 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:05:44,341 INFO L206 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] [2024-11-28 05:05:44,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-11-28 05:05:44,341 INFO L396 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 05:05:44,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:05:44,341 INFO L85 PathProgramCache]: Analyzing trace with hash -554280376, now seen corresponding path program 19 times [2024-11-28 05:05:44,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:05:44,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852464611] [2024-11-28 05:05:44,342 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 05:05:44,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:05:44,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:05:44,543 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:05:44,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:05:44,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852464611] [2024-11-28 05:05:44,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852464611] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:05:44,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:05:44,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 05:05:44,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580811665] [2024-11-28 05:05:44,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:05:44,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 05:05:44,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:05:44,544 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 05:05:44,544 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-28 05:05:44,544 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-28 05:05:44,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 169 transitions, 2939 flow. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:44,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:05:44,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-28 05:05:44,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:05:44,977 INFO L124 PetriNetUnfolderBase]: 1234/2098 cut-off events. [2024-11-28 05:05:44,977 INFO L125 PetriNetUnfolderBase]: For 18986/18986 co-relation queries the response was YES. [2024-11-28 05:05:44,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13814 conditions, 2098 events. 1234/2098 cut-off events. For 18986/18986 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 11059 event pairs, 470 based on Foata normal form. 6/2104 useless extension candidates. Maximal degree in co-relation 13764. Up to 1476 conditions per place. [2024-11-28 05:05:44,989 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 119 selfloop transitions, 60 changer transitions 5/185 dead transitions. [2024-11-28 05:05:44,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 185 transitions, 3345 flow [2024-11-28 05:05:44,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 05:05:44,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-28 05:05:44,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 97 transitions. [2024-11-28 05:05:44,990 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2852941176470588 [2024-11-28 05:05:44,990 INFO L175 Difference]: Start difference. First operand has 192 places, 169 transitions, 2939 flow. Second operand 10 states and 97 transitions. [2024-11-28 05:05:44,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 185 transitions, 3345 flow [2024-11-28 05:05:45,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 185 transitions, 3207 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-11-28 05:05:45,039 INFO L231 Difference]: Finished difference. Result has 190 places, 165 transitions, 2825 flow [2024-11-28 05:05:45,039 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2749, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2825, PETRI_PLACES=190, PETRI_TRANSITIONS=165} [2024-11-28 05:05:45,040 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 160 predicate places. [2024-11-28 05:05:45,040 INFO L471 AbstractCegarLoop]: Abstraction has has 190 places, 165 transitions, 2825 flow [2024-11-28 05:05:45,040 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:45,040 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:05:45,040 INFO L206 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] [2024-11-28 05:05:45,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-11-28 05:05:45,040 INFO L396 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 05:05:45,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:05:45,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1887426118, now seen corresponding path program 20 times [2024-11-28 05:05:45,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:05:45,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180827280] [2024-11-28 05:05:45,041 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:05:45,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:05:45,053 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 05:05:45,053 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:05:45,292 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:05:45,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:05:45,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180827280] [2024-11-28 05:05:45,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180827280] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:05:45,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:05:45,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 05:05:45,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270814190] [2024-11-28 05:05:45,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:05:45,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 05:05:45,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:05:45,293 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 05:05:45,294 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-28 05:05:45,294 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-28 05:05:45,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 165 transitions, 2825 flow. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:45,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:05:45,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-28 05:05:45,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:05:45,768 INFO L124 PetriNetUnfolderBase]: 1165/1963 cut-off events. [2024-11-28 05:05:45,769 INFO L125 PetriNetUnfolderBase]: For 17938/17938 co-relation queries the response was YES. [2024-11-28 05:05:45,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13050 conditions, 1963 events. 1165/1963 cut-off events. For 17938/17938 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 10098 event pairs, 432 based on Foata normal form. 6/1969 useless extension candidates. Maximal degree in co-relation 13000. Up to 1364 conditions per place. [2024-11-28 05:05:45,780 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 113 selfloop transitions, 53 changer transitions 11/178 dead transitions. [2024-11-28 05:05:45,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 178 transitions, 3166 flow [2024-11-28 05:05:45,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 05:05:45,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-28 05:05:45,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 99 transitions. [2024-11-28 05:05:45,781 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2647058823529412 [2024-11-28 05:05:45,781 INFO L175 Difference]: Start difference. First operand has 190 places, 165 transitions, 2825 flow. Second operand 11 states and 99 transitions. [2024-11-28 05:05:45,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 178 transitions, 3166 flow [2024-11-28 05:05:45,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 178 transitions, 3029 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-11-28 05:05:45,813 INFO L231 Difference]: Finished difference. Result has 186 places, 157 transitions, 2640 flow [2024-11-28 05:05:45,813 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2614, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2640, PETRI_PLACES=186, PETRI_TRANSITIONS=157} [2024-11-28 05:05:45,813 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 156 predicate places. [2024-11-28 05:05:45,813 INFO L471 AbstractCegarLoop]: Abstraction has has 186 places, 157 transitions, 2640 flow [2024-11-28 05:05:45,813 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:45,813 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:05:45,813 INFO L206 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] [2024-11-28 05:05:45,813 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-11-28 05:05:45,814 INFO L396 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 05:05:45,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:05:45,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1426739642, now seen corresponding path program 18 times [2024-11-28 05:05:45,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:05:45,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941617797] [2024-11-28 05:05:45,814 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 05:05:45,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:05:45,827 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-28 05:05:45,827 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:05:46,018 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:05:46,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:05:46,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941617797] [2024-11-28 05:05:46,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941617797] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:05:46,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:05:46,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 05:05:46,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990530623] [2024-11-28 05:05:46,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:05:46,019 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 05:05:46,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:05:46,019 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 05:05:46,019 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-28 05:05:46,019 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-28 05:05:46,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 157 transitions, 2640 flow. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:46,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:05:46,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-28 05:05:46,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:05:46,439 INFO L124 PetriNetUnfolderBase]: 1156/1949 cut-off events. [2024-11-28 05:05:46,439 INFO L125 PetriNetUnfolderBase]: For 17903/17903 co-relation queries the response was YES. [2024-11-28 05:05:46,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12942 conditions, 1949 events. 1156/1949 cut-off events. For 17903/17903 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 10017 event pairs, 439 based on Foata normal form. 7/1956 useless extension candidates. Maximal degree in co-relation 12892. Up to 1364 conditions per place. [2024-11-28 05:05:46,450 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 112 selfloop transitions, 54 changer transitions 9/176 dead transitions. [2024-11-28 05:05:46,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 176 transitions, 3082 flow [2024-11-28 05:05:46,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 05:05:46,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-28 05:05:46,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 98 transitions. [2024-11-28 05:05:46,451 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2620320855614973 [2024-11-28 05:05:46,451 INFO L175 Difference]: Start difference. First operand has 186 places, 157 transitions, 2640 flow. Second operand 11 states and 98 transitions. [2024-11-28 05:05:46,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 176 transitions, 3082 flow [2024-11-28 05:05:46,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 176 transitions, 2891 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-11-28 05:05:46,481 INFO L231 Difference]: Finished difference. Result has 178 places, 153 transitions, 2489 flow [2024-11-28 05:05:46,482 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2452, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2489, PETRI_PLACES=178, PETRI_TRANSITIONS=153} [2024-11-28 05:05:46,482 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 148 predicate places. [2024-11-28 05:05:46,482 INFO L471 AbstractCegarLoop]: Abstraction has has 178 places, 153 transitions, 2489 flow [2024-11-28 05:05:46,482 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:46,482 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:05:46,482 INFO L206 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] [2024-11-28 05:05:46,482 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-11-28 05:05:46,482 INFO L396 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 05:05:46,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:05:46,483 INFO L85 PathProgramCache]: Analyzing trace with hash -221001428, now seen corresponding path program 19 times [2024-11-28 05:05:46,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:05:46,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6486980] [2024-11-28 05:05:46,483 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 05:05:46,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:05:46,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:05:46,683 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:05:46,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:05:46,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6486980] [2024-11-28 05:05:46,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6486980] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:05:46,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:05:46,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 05:05:46,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254138306] [2024-11-28 05:05:46,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:05:46,684 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 05:05:46,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:05:46,684 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 05:05:46,685 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-28 05:05:46,685 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-28 05:05:46,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 153 transitions, 2489 flow. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:46,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:05:46,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-28 05:05:46,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:05:47,070 INFO L124 PetriNetUnfolderBase]: 1083/1817 cut-off events. [2024-11-28 05:05:47,070 INFO L125 PetriNetUnfolderBase]: For 15016/15016 co-relation queries the response was YES. [2024-11-28 05:05:47,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11946 conditions, 1817 events. 1083/1817 cut-off events. For 15016/15016 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 9170 event pairs, 386 based on Foata normal form. 7/1824 useless extension candidates. Maximal degree in co-relation 11896. Up to 1258 conditions per place. [2024-11-28 05:05:47,081 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 110 selfloop transitions, 49 changer transitions 6/166 dead transitions. [2024-11-28 05:05:47,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 166 transitions, 2837 flow [2024-11-28 05:05:47,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 05:05:47,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-28 05:05:47,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 92 transitions. [2024-11-28 05:05:47,082 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.27058823529411763 [2024-11-28 05:05:47,082 INFO L175 Difference]: Start difference. First operand has 178 places, 153 transitions, 2489 flow. Second operand 10 states and 92 transitions. [2024-11-28 05:05:47,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 166 transitions, 2837 flow [2024-11-28 05:05:47,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 166 transitions, 2713 flow, removed 1 selfloop flow, removed 12 redundant places. [2024-11-28 05:05:47,110 INFO L231 Difference]: Finished difference. Result has 173 places, 149 transitions, 2375 flow [2024-11-28 05:05:47,110 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2323, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2375, PETRI_PLACES=173, PETRI_TRANSITIONS=149} [2024-11-28 05:05:47,110 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 143 predicate places. [2024-11-28 05:05:47,110 INFO L471 AbstractCegarLoop]: Abstraction has has 173 places, 149 transitions, 2375 flow [2024-11-28 05:05:47,110 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:47,110 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:05:47,111 INFO L206 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] [2024-11-28 05:05:47,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-11-28 05:05:47,111 INFO L396 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 05:05:47,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:05:47,111 INFO L85 PathProgramCache]: Analyzing trace with hash -567253886, now seen corresponding path program 20 times [2024-11-28 05:05:47,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:05:47,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170150862] [2024-11-28 05:05:47,111 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:05:47,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:05:47,121 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 05:05:47,121 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:05:47,299 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:05:47,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:05:47,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170150862] [2024-11-28 05:05:47,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170150862] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:05:47,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:05:47,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 05:05:47,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229413787] [2024-11-28 05:05:47,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:05:47,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 05:05:47,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:05:47,300 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 05:05:47,300 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-28 05:05:47,300 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-28 05:05:47,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 149 transitions, 2375 flow. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:47,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:05:47,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-28 05:05:47,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:05:47,673 INFO L124 PetriNetUnfolderBase]: 1018/1700 cut-off events. [2024-11-28 05:05:47,673 INFO L125 PetriNetUnfolderBase]: For 13954/13954 co-relation queries the response was YES. [2024-11-28 05:05:47,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11224 conditions, 1700 events. 1018/1700 cut-off events. For 13954/13954 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 8397 event pairs, 353 based on Foata normal form. 7/1707 useless extension candidates. Maximal degree in co-relation 11178. Up to 1152 conditions per place. [2024-11-28 05:05:47,682 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 107 selfloop transitions, 47 changer transitions 6/161 dead transitions. [2024-11-28 05:05:47,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 161 transitions, 2685 flow [2024-11-28 05:05:47,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 05:05:47,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-28 05:05:47,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 89 transitions. [2024-11-28 05:05:47,683 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.26176470588235295 [2024-11-28 05:05:47,683 INFO L175 Difference]: Start difference. First operand has 173 places, 149 transitions, 2375 flow. Second operand 10 states and 89 transitions. [2024-11-28 05:05:47,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 161 transitions, 2685 flow [2024-11-28 05:05:47,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 161 transitions, 2580 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-11-28 05:05:47,708 INFO L231 Difference]: Finished difference. Result has 169 places, 144 transitions, 2257 flow [2024-11-28 05:05:47,708 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2200, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2257, PETRI_PLACES=169, PETRI_TRANSITIONS=144} [2024-11-28 05:05:47,709 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 139 predicate places. [2024-11-28 05:05:47,709 INFO L471 AbstractCegarLoop]: Abstraction has has 169 places, 144 transitions, 2257 flow [2024-11-28 05:05:47,709 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:47,709 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:05:47,709 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:05:47,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-11-28 05:05:47,709 INFO L396 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 05:05:47,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:05:47,709 INFO L85 PathProgramCache]: Analyzing trace with hash -224424408, now seen corresponding path program 1 times [2024-11-28 05:05:47,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:05:47,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645375758] [2024-11-28 05:05:47,710 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:05:47,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:05:47,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:05:47,961 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:05:47,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:05:47,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645375758] [2024-11-28 05:05:47,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645375758] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:05:47,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44072946] [2024-11-28 05:05:47,962 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:05:47,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:05:47,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:05:47,963 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:05:47,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-28 05:05:48,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:05:48,092 INFO L256 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-28 05:05:48,093 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:05:48,436 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:05:48,437 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:05:48,935 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:05:48,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [44072946] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:05:48,935 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:05:48,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 27 [2024-11-28 05:05:48,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314005052] [2024-11-28 05:05:48,935 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:05:48,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-28 05:05:48,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:05:48,936 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-28 05:05:48,936 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=599, Unknown=0, NotChecked=0, Total=756 [2024-11-28 05:05:48,936 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-28 05:05:48,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 144 transitions, 2257 flow. Second operand has 28 states, 28 states have (on average 5.571428571428571) internal successors, (156), 28 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:48,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:05:48,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-28 05:05:48,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:05:50,115 INFO L124 PetriNetUnfolderBase]: 3132/5241 cut-off events. [2024-11-28 05:05:50,115 INFO L125 PetriNetUnfolderBase]: For 42940/42940 co-relation queries the response was YES. [2024-11-28 05:05:50,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34278 conditions, 5241 events. 3132/5241 cut-off events. For 42940/42940 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 32639 event pairs, 566 based on Foata normal form. 1/5242 useless extension candidates. Maximal degree in co-relation 34233. Up to 1093 conditions per place. [2024-11-28 05:05:50,151 INFO L140 encePairwiseOnDemand]: 20/34 looper letters, 432 selfloop transitions, 103 changer transitions 3/539 dead transitions. [2024-11-28 05:05:50,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 539 transitions, 8840 flow [2024-11-28 05:05:50,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-28 05:05:50,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-28 05:05:50,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 248 transitions. [2024-11-28 05:05:50,153 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.38390092879256965 [2024-11-28 05:05:50,153 INFO L175 Difference]: Start difference. First operand has 169 places, 144 transitions, 2257 flow. Second operand 19 states and 248 transitions. [2024-11-28 05:05:50,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 539 transitions, 8840 flow [2024-11-28 05:05:50,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 539 transitions, 8413 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-28 05:05:50,251 INFO L231 Difference]: Finished difference. Result has 186 places, 238 transitions, 4198 flow [2024-11-28 05:05:50,251 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2127, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=4198, PETRI_PLACES=186, PETRI_TRANSITIONS=238} [2024-11-28 05:05:50,252 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 156 predicate places. [2024-11-28 05:05:50,252 INFO L471 AbstractCegarLoop]: Abstraction has has 186 places, 238 transitions, 4198 flow [2024-11-28 05:05:50,252 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 5.571428571428571) internal successors, (156), 28 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:50,252 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:05:50,252 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 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] [2024-11-28 05:05:50,263 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-11-28 05:05:50,452 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:05:50,453 INFO L396 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 05:05:50,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:05:50,453 INFO L85 PathProgramCache]: Analyzing trace with hash -337704969, now seen corresponding path program 1 times [2024-11-28 05:05:50,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:05:50,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629689763] [2024-11-28 05:05:50,453 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:05:50,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:05:50,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:05:50,548 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:05:50,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:05:50,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629689763] [2024-11-28 05:05:50,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629689763] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:05:50,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712437937] [2024-11-28 05:05:50,548 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:05:50,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:05:50,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:05:50,550 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:05:50,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-28 05:05:50,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:05:50,671 INFO L256 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 05:05:50,672 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:05:50,739 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:05:50,740 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:05:50,814 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:05:50,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1712437937] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:05:50,814 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:05:50,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 16 [2024-11-28 05:05:50,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90822535] [2024-11-28 05:05:50,814 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:05:50,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-28 05:05:50,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:05:50,815 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-28 05:05:50,815 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2024-11-28 05:05:50,815 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-28 05:05:50,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 238 transitions, 4198 flow. Second operand has 16 states, 16 states have (on average 6.0) internal successors, (96), 16 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:50,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:05:50,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-28 05:05:50,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:05:51,945 INFO L124 PetriNetUnfolderBase]: 3750/6363 cut-off events. [2024-11-28 05:05:51,945 INFO L125 PetriNetUnfolderBase]: For 62178/62178 co-relation queries the response was YES. [2024-11-28 05:05:51,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44985 conditions, 6363 events. 3750/6363 cut-off events. For 62178/62178 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 41628 event pairs, 1086 based on Foata normal form. 188/6551 useless extension candidates. Maximal degree in co-relation 44926. Up to 1687 conditions per place. [2024-11-28 05:05:51,998 INFO L140 encePairwiseOnDemand]: 25/34 looper letters, 477 selfloop transitions, 129 changer transitions 21/628 dead transitions. [2024-11-28 05:05:51,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 628 transitions, 11032 flow [2024-11-28 05:05:51,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 05:05:51,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-28 05:05:51,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 225 transitions. [2024-11-28 05:05:51,999 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3892733564013841 [2024-11-28 05:05:51,999 INFO L175 Difference]: Start difference. First operand has 186 places, 238 transitions, 4198 flow. Second operand 17 states and 225 transitions. [2024-11-28 05:05:51,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 628 transitions, 11032 flow [2024-11-28 05:05:52,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 628 transitions, 10955 flow, removed 18 selfloop flow, removed 2 redundant places. [2024-11-28 05:05:52,237 INFO L231 Difference]: Finished difference. Result has 203 places, 290 transitions, 5906 flow [2024-11-28 05:05:52,237 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=3968, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=5906, PETRI_PLACES=203, PETRI_TRANSITIONS=290} [2024-11-28 05:05:52,237 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 173 predicate places. [2024-11-28 05:05:52,237 INFO L471 AbstractCegarLoop]: Abstraction has has 203 places, 290 transitions, 5906 flow [2024-11-28 05:05:52,237 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.0) internal successors, (96), 16 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:52,237 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:05:52,237 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 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] [2024-11-28 05:05:52,245 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-11-28 05:05:52,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2024-11-28 05:05:52,438 INFO L396 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 05:05:52,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:05:52,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1443387950, now seen corresponding path program 2 times [2024-11-28 05:05:52,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:05:52,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760720083] [2024-11-28 05:05:52,439 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:05:52,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:05:52,448 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 05:05:52,448 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:05:52,543 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 05:05:52,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:05:52,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760720083] [2024-11-28 05:05:52,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760720083] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:05:52,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:05:52,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 05:05:52,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238705360] [2024-11-28 05:05:52,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:05:52,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:05:52,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:05:52,544 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:05:52,544 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:05:52,544 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-28 05:05:52,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 290 transitions, 5906 flow. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:52,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:05:52,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-28 05:05:52,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:05:54,289 INFO L124 PetriNetUnfolderBase]: 6632/11255 cut-off events. [2024-11-28 05:05:54,289 INFO L125 PetriNetUnfolderBase]: For 131075/131075 co-relation queries the response was YES. [2024-11-28 05:05:54,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80379 conditions, 11255 events. 6632/11255 cut-off events. For 131075/131075 co-relation queries the response was YES. Maximal size of possible extension queue 745. Compared 81478 event pairs, 423 based on Foata normal form. 4/11259 useless extension candidates. Maximal degree in co-relation 80316. Up to 3042 conditions per place. [2024-11-28 05:05:54,389 INFO L140 encePairwiseOnDemand]: 26/34 looper letters, 521 selfloop transitions, 82 changer transitions 7/611 dead transitions. [2024-11-28 05:05:54,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 611 transitions, 12961 flow [2024-11-28 05:05:54,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 05:05:54,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-28 05:05:54,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 147 transitions. [2024-11-28 05:05:54,390 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4803921568627451 [2024-11-28 05:05:54,390 INFO L175 Difference]: Start difference. First operand has 203 places, 290 transitions, 5906 flow. Second operand 9 states and 147 transitions. [2024-11-28 05:05:54,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 611 transitions, 12961 flow [2024-11-28 05:05:55,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 611 transitions, 12200 flow, removed 271 selfloop flow, removed 12 redundant places. [2024-11-28 05:05:55,441 INFO L231 Difference]: Finished difference. Result has 204 places, 330 transitions, 6379 flow [2024-11-28 05:05:55,441 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=5486, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6379, PETRI_PLACES=204, PETRI_TRANSITIONS=330} [2024-11-28 05:05:55,442 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 174 predicate places. [2024-11-28 05:05:55,442 INFO L471 AbstractCegarLoop]: Abstraction has has 204 places, 330 transitions, 6379 flow [2024-11-28 05:05:55,442 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:55,442 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:05:55,442 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 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] [2024-11-28 05:05:55,442 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-11-28 05:05:55,443 INFO L396 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 05:05:55,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:05:55,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1311866696, now seen corresponding path program 3 times [2024-11-28 05:05:55,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:05:55,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320337697] [2024-11-28 05:05:55,444 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 05:05:55,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:05:55,456 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-28 05:05:55,456 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:05:55,557 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 05:05:55,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:05:55,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320337697] [2024-11-28 05:05:55,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320337697] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:05:55,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:05:55,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 05:05:55,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714142839] [2024-11-28 05:05:55,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:05:55,558 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:05:55,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:05:55,558 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:05:55,558 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:05:55,558 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-28 05:05:55,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 330 transitions, 6379 flow. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:55,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:05:55,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-28 05:05:55,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:05:57,425 INFO L124 PetriNetUnfolderBase]: 6931/11904 cut-off events. [2024-11-28 05:05:57,425 INFO L125 PetriNetUnfolderBase]: For 138369/138369 co-relation queries the response was YES. [2024-11-28 05:05:57,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83503 conditions, 11904 events. 6931/11904 cut-off events. For 138369/138369 co-relation queries the response was YES. Maximal size of possible extension queue 787. Compared 87811 event pairs, 420 based on Foata normal form. 4/11908 useless extension candidates. Maximal degree in co-relation 83440. Up to 2689 conditions per place. [2024-11-28 05:05:57,536 INFO L140 encePairwiseOnDemand]: 26/34 looper letters, 533 selfloop transitions, 92 changer transitions 7/633 dead transitions. [2024-11-28 05:05:57,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 633 transitions, 13364 flow [2024-11-28 05:05:57,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 05:05:57,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-28 05:05:57,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 133 transitions. [2024-11-28 05:05:57,537 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.434640522875817 [2024-11-28 05:05:57,537 INFO L175 Difference]: Start difference. First operand has 204 places, 330 transitions, 6379 flow. Second operand 9 states and 133 transitions. [2024-11-28 05:05:57,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 633 transitions, 13364 flow [2024-11-28 05:05:58,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 633 transitions, 13310 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-11-28 05:05:58,537 INFO L231 Difference]: Finished difference. Result has 213 places, 344 transitions, 6846 flow [2024-11-28 05:05:58,537 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=6333, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6846, PETRI_PLACES=213, PETRI_TRANSITIONS=344} [2024-11-28 05:05:58,537 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 183 predicate places. [2024-11-28 05:05:58,537 INFO L471 AbstractCegarLoop]: Abstraction has has 213 places, 344 transitions, 6846 flow [2024-11-28 05:05:58,537 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:58,537 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:05:58,538 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 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] [2024-11-28 05:05:58,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-11-28 05:05:58,538 INFO L396 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 05:05:58,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:05:58,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1091729848, now seen corresponding path program 1 times [2024-11-28 05:05:58,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:05:58,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038012900] [2024-11-28 05:05:58,539 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:05:58,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:05:58,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:05:58,601 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:05:58,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:05:58,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038012900] [2024-11-28 05:05:58,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038012900] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:05:58,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509999353] [2024-11-28 05:05:58,601 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:05:58,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:05:58,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:05:58,603 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:05:58,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-28 05:05:58,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:05:58,724 INFO L256 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 05:05:58,725 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:05:58,800 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:05:58,800 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:05:58,871 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:05:58,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [509999353] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:05:58,871 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:05:58,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 16 [2024-11-28 05:05:58,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832411879] [2024-11-28 05:05:58,871 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:05:58,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-28 05:05:58,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:05:58,872 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-28 05:05:58,872 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2024-11-28 05:05:58,872 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-28 05:05:58,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 344 transitions, 6846 flow. Second operand has 16 states, 16 states have (on average 6.3125) internal successors, (101), 16 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:05:58,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:05:58,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-28 05:05:58,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:06:01,183 INFO L124 PetriNetUnfolderBase]: 5177/9251 cut-off events. [2024-11-28 05:06:01,183 INFO L125 PetriNetUnfolderBase]: For 119123/119123 co-relation queries the response was YES. [2024-11-28 05:06:01,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66645 conditions, 9251 events. 5177/9251 cut-off events. For 119123/119123 co-relation queries the response was YES. Maximal size of possible extension queue 637. Compared 69094 event pairs, 1681 based on Foata normal form. 340/9591 useless extension candidates. Maximal degree in co-relation 66578. Up to 3059 conditions per place. [2024-11-28 05:06:01,265 INFO L140 encePairwiseOnDemand]: 25/34 looper letters, 349 selfloop transitions, 85 changer transitions 152/587 dead transitions. [2024-11-28 05:06:01,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 587 transitions, 11114 flow [2024-11-28 05:06:01,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 05:06:01,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-28 05:06:01,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 209 transitions. [2024-11-28 05:06:01,266 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3615916955017301 [2024-11-28 05:06:01,266 INFO L175 Difference]: Start difference. First operand has 213 places, 344 transitions, 6846 flow. Second operand 17 states and 209 transitions. [2024-11-28 05:06:01,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 587 transitions, 11114 flow [2024-11-28 05:06:02,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 587 transitions, 11026 flow, removed 44 selfloop flow, removed 1 redundant places. [2024-11-28 05:06:02,011 INFO L231 Difference]: Finished difference. Result has 231 places, 331 transitions, 6651 flow [2024-11-28 05:06:02,011 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=6125, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=6651, PETRI_PLACES=231, PETRI_TRANSITIONS=331} [2024-11-28 05:06:02,011 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 201 predicate places. [2024-11-28 05:06:02,011 INFO L471 AbstractCegarLoop]: Abstraction has has 231 places, 331 transitions, 6651 flow [2024-11-28 05:06:02,011 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.3125) internal successors, (101), 16 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:06:02,011 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:06:02,012 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 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] [2024-11-28 05:06:02,018 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-11-28 05:06:02,212 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:06:02,212 INFO L396 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 05:06:02,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:06:02,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1425203882, now seen corresponding path program 4 times [2024-11-28 05:06:02,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:06:02,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830349498] [2024-11-28 05:06:02,213 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 05:06:02,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:06:02,228 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 05:06:02,229 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:06:02,576 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:06:02,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:06:02,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830349498] [2024-11-28 05:06:02,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830349498] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:06:02,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [493986562] [2024-11-28 05:06:02,576 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 05:06:02,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:06:02,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:06:02,578 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:06:02,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-28 05:06:02,710 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 05:06:02,710 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:06:02,711 INFO L256 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-28 05:06:02,712 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:06:03,165 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:06:03,165 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:06:04,262 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:06:04,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [493986562] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 05:06:04,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:06:04,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [12, 12] total 32 [2024-11-28 05:06:04,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348213059] [2024-11-28 05:06:04,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:06:04,263 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 05:06:04,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:06:04,263 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 05:06:04,264 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=823, Unknown=0, NotChecked=0, Total=992 [2024-11-28 05:06:04,264 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-28 05:06:04,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 331 transitions, 6651 flow. Second operand has 12 states, 12 states have (on average 5.25) internal successors, (63), 12 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:06:04,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:06:04,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-28 05:06:04,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:06:06,771 INFO L124 PetriNetUnfolderBase]: 4513/8030 cut-off events. [2024-11-28 05:06:06,772 INFO L125 PetriNetUnfolderBase]: For 116502/116502 co-relation queries the response was YES. [2024-11-28 05:06:06,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59705 conditions, 8030 events. 4513/8030 cut-off events. For 116502/116502 co-relation queries the response was YES. Maximal size of possible extension queue 586. Compared 58423 event pairs, 629 based on Foata normal form. 3/8033 useless extension candidates. Maximal degree in co-relation 59632. Up to 1708 conditions per place. [2024-11-28 05:06:06,855 INFO L140 encePairwiseOnDemand]: 20/34 looper letters, 381 selfloop transitions, 193 changer transitions 21/596 dead transitions. [2024-11-28 05:06:06,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 596 transitions, 11521 flow [2024-11-28 05:06:06,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-28 05:06:06,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-28 05:06:06,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 248 transitions. [2024-11-28 05:06:06,856 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36470588235294116 [2024-11-28 05:06:06,856 INFO L175 Difference]: Start difference. First operand has 231 places, 331 transitions, 6651 flow. Second operand 20 states and 248 transitions. [2024-11-28 05:06:06,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 596 transitions, 11521 flow [2024-11-28 05:06:07,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 596 transitions, 11294 flow, removed 69 selfloop flow, removed 12 redundant places. [2024-11-28 05:06:07,634 INFO L231 Difference]: Finished difference. Result has 236 places, 390 transitions, 8267 flow [2024-11-28 05:06:07,635 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=6506, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=8267, PETRI_PLACES=236, PETRI_TRANSITIONS=390} [2024-11-28 05:06:07,635 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 206 predicate places. [2024-11-28 05:06:07,635 INFO L471 AbstractCegarLoop]: Abstraction has has 236 places, 390 transitions, 8267 flow [2024-11-28 05:06:07,635 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.25) internal successors, (63), 12 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:06:07,635 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:06:07,635 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 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] [2024-11-28 05:06:07,644 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-11-28 05:06:07,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable83 [2024-11-28 05:06:07,836 INFO L396 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 05:06:07,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:06:07,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1768377440, now seen corresponding path program 5 times [2024-11-28 05:06:07,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:06:07,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121687891] [2024-11-28 05:06:07,837 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 05:06:07,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:06:07,848 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 05:06:07,848 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:06:08,029 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:06:08,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:06:08,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121687891] [2024-11-28 05:06:08,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121687891] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:06:08,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [973844938] [2024-11-28 05:06:08,030 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 05:06:08,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:06:08,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:06:08,032 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:06:08,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-28 05:06:08,157 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 05:06:08,157 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:06:08,158 INFO L256 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-28 05:06:08,159 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:06:08,501 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:06:08,501 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:06:09,313 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:06:09,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [973844938] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:06:09,314 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:06:09,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 28 [2024-11-28 05:06:09,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948469682] [2024-11-28 05:06:09,314 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:06:09,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-28 05:06:09,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:06:09,314 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-28 05:06:09,315 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=649, Unknown=0, NotChecked=0, Total=812 [2024-11-28 05:06:09,315 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-28 05:06:09,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 390 transitions, 8267 flow. Second operand has 29 states, 29 states have (on average 5.793103448275862) internal successors, (168), 29 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:06:09,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:06:09,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-28 05:06:09,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:06:12,842 INFO L124 PetriNetUnfolderBase]: 7359/12870 cut-off events. [2024-11-28 05:06:12,842 INFO L125 PetriNetUnfolderBase]: For 205278/205278 co-relation queries the response was YES. [2024-11-28 05:06:12,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99032 conditions, 12870 events. 7359/12870 cut-off events. For 205278/205278 co-relation queries the response was YES. Maximal size of possible extension queue 912. Compared 98950 event pairs, 1390 based on Foata normal form. 6/12876 useless extension candidates. Maximal degree in co-relation 98955. Up to 2557 conditions per place. [2024-11-28 05:06:12,964 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 784 selfloop transitions, 141 changer transitions 136/1062 dead transitions. [2024-11-28 05:06:12,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 1062 transitions, 21541 flow [2024-11-28 05:06:12,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-28 05:06:12,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2024-11-28 05:06:12,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 370 transitions. [2024-11-28 05:06:12,966 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3627450980392157 [2024-11-28 05:06:12,966 INFO L175 Difference]: Start difference. First operand has 236 places, 390 transitions, 8267 flow. Second operand 30 states and 370 transitions. [2024-11-28 05:06:12,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 1062 transitions, 21541 flow [2024-11-28 05:06:14,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 1062 transitions, 21123 flow, removed 56 selfloop flow, removed 7 redundant places. [2024-11-28 05:06:14,921 INFO L231 Difference]: Finished difference. Result has 269 places, 436 transitions, 9260 flow [2024-11-28 05:06:14,922 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=8063, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=9260, PETRI_PLACES=269, PETRI_TRANSITIONS=436} [2024-11-28 05:06:14,922 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 239 predicate places. [2024-11-28 05:06:14,922 INFO L471 AbstractCegarLoop]: Abstraction has has 269 places, 436 transitions, 9260 flow [2024-11-28 05:06:14,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 5.793103448275862) internal successors, (168), 29 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:06:14,922 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:06:14,922 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 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] [2024-11-28 05:06:14,929 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-11-28 05:06:15,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable84 [2024-11-28 05:06:15,123 INFO L396 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 05:06:15,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:06:15,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1231929812, now seen corresponding path program 6 times [2024-11-28 05:06:15,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:06:15,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199269520] [2024-11-28 05:06:15,124 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 05:06:15,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:06:15,134 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-28 05:06:15,134 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:06:15,207 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 05:06:15,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:06:15,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199269520] [2024-11-28 05:06:15,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199269520] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:06:15,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:06:15,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 05:06:15,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042420658] [2024-11-28 05:06:15,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:06:15,208 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:06:15,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:06:15,208 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:06:15,208 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:06:15,208 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-28 05:06:15,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 436 transitions, 9260 flow. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:06:15,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:06:15,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-28 05:06:15,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:06:17,746 INFO L124 PetriNetUnfolderBase]: 6473/11210 cut-off events. [2024-11-28 05:06:17,746 INFO L125 PetriNetUnfolderBase]: For 184795/184795 co-relation queries the response was YES. [2024-11-28 05:06:17,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86100 conditions, 11210 events. 6473/11210 cut-off events. For 184795/184795 co-relation queries the response was YES. Maximal size of possible extension queue 793. Compared 83461 event pairs, 514 based on Foata normal form. 6/11216 useless extension candidates. Maximal degree in co-relation 86013. Up to 5412 conditions per place. [2024-11-28 05:06:17,891 INFO L140 encePairwiseOnDemand]: 26/34 looper letters, 346 selfloop transitions, 137 changer transitions 21/505 dead transitions. [2024-11-28 05:06:17,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 505 transitions, 10956 flow [2024-11-28 05:06:17,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 05:06:17,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-28 05:06:17,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 113 transitions. [2024-11-28 05:06:17,893 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41544117647058826 [2024-11-28 05:06:17,893 INFO L175 Difference]: Start difference. First operand has 269 places, 436 transitions, 9260 flow. Second operand 8 states and 113 transitions. [2024-11-28 05:06:17,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 505 transitions, 10956 flow [2024-11-28 05:06:19,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 505 transitions, 10871 flow, removed 38 selfloop flow, removed 6 redundant places. [2024-11-28 05:06:19,413 INFO L231 Difference]: Finished difference. Result has 268 places, 423 transitions, 9218 flow [2024-11-28 05:06:19,413 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=9179, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9218, PETRI_PLACES=268, PETRI_TRANSITIONS=423} [2024-11-28 05:06:19,413 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 238 predicate places. [2024-11-28 05:06:19,413 INFO L471 AbstractCegarLoop]: Abstraction has has 268 places, 423 transitions, 9218 flow [2024-11-28 05:06:19,414 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:06:19,414 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:06:19,414 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 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] [2024-11-28 05:06:19,414 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-11-28 05:06:19,414 INFO L396 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 05:06:19,414 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:06:19,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1375988026, now seen corresponding path program 7 times [2024-11-28 05:06:19,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:06:19,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127842653] [2024-11-28 05:06:19,415 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 05:06:19,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:06:19,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:06:19,799 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:06:19,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:06:19,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127842653] [2024-11-28 05:06:19,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127842653] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:06:19,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1388705222] [2024-11-28 05:06:19,800 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 05:06:19,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:06:19,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:06:19,802 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:06:19,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-28 05:06:19,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:06:19,940 INFO L256 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-28 05:06:19,941 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:06:20,374 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:06:20,374 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:06:21,292 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:06:21,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1388705222] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:06:21,293 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:06:21,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 28 [2024-11-28 05:06:21,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133115418] [2024-11-28 05:06:21,293 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:06:21,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-28 05:06:21,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:06:21,294 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-28 05:06:21,294 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=657, Unknown=0, NotChecked=0, Total=812 [2024-11-28 05:06:21,294 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-28 05:06:21,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 423 transitions, 9218 flow. Second operand has 29 states, 29 states have (on average 5.793103448275862) internal successors, (168), 29 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:06:21,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:06:21,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-28 05:06:21,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:06:24,973 INFO L124 PetriNetUnfolderBase]: 6346/10938 cut-off events. [2024-11-28 05:06:24,973 INFO L125 PetriNetUnfolderBase]: For 192834/192834 co-relation queries the response was YES. [2024-11-28 05:06:25,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85720 conditions, 10938 events. 6346/10938 cut-off events. For 192834/192834 co-relation queries the response was YES. Maximal size of possible extension queue 785. Compared 80560 event pairs, 1240 based on Foata normal form. 3/10941 useless extension candidates. Maximal degree in co-relation 85632. Up to 2448 conditions per place. [2024-11-28 05:06:25,280 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 674 selfloop transitions, 127 changer transitions 112/914 dead transitions. [2024-11-28 05:06:25,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 914 transitions, 18800 flow [2024-11-28 05:06:25,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-28 05:06:25,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-11-28 05:06:25,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 325 transitions. [2024-11-28 05:06:25,281 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.34138655462184875 [2024-11-28 05:06:25,281 INFO L175 Difference]: Start difference. First operand has 268 places, 423 transitions, 9218 flow. Second operand 28 states and 325 transitions. [2024-11-28 05:06:25,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 914 transitions, 18800 flow [2024-11-28 05:06:26,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 914 transitions, 18384 flow, removed 73 selfloop flow, removed 9 redundant places. [2024-11-28 05:06:26,585 INFO L231 Difference]: Finished difference. Result has 292 places, 367 transitions, 7776 flow [2024-11-28 05:06:26,585 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=8926, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=7776, PETRI_PLACES=292, PETRI_TRANSITIONS=367} [2024-11-28 05:06:26,585 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 262 predicate places. [2024-11-28 05:06:26,585 INFO L471 AbstractCegarLoop]: Abstraction has has 292 places, 367 transitions, 7776 flow [2024-11-28 05:06:26,586 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 5.793103448275862) internal successors, (168), 29 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:06:26,586 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:06:26,586 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 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] [2024-11-28 05:06:26,591 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2024-11-28 05:06:26,786 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable86 [2024-11-28 05:06:26,786 INFO L396 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 05:06:26,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:06:26,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1769379582, now seen corresponding path program 8 times [2024-11-28 05:06:26,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:06:26,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600833774] [2024-11-28 05:06:26,787 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:06:26,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:06:26,798 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 05:06:26,798 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:06:26,884 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 05:06:26,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:06:26,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600833774] [2024-11-28 05:06:26,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600833774] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:06:26,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:06:26,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 05:06:26,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485096197] [2024-11-28 05:06:26,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:06:26,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 05:06:26,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:06:26,885 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 05:06:26,885 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-28 05:06:26,885 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-28 05:06:26,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 367 transitions, 7776 flow. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:06:26,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:06:26,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-28 05:06:26,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:06:28,931 INFO L124 PetriNetUnfolderBase]: 5828/10010 cut-off events. [2024-11-28 05:06:28,931 INFO L125 PetriNetUnfolderBase]: For 168772/168772 co-relation queries the response was YES. [2024-11-28 05:06:29,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76983 conditions, 10010 events. 5828/10010 cut-off events. For 168772/168772 co-relation queries the response was YES. Maximal size of possible extension queue 713. Compared 72390 event pairs, 453 based on Foata normal form. 6/10016 useless extension candidates. Maximal degree in co-relation 76891. Up to 4566 conditions per place. [2024-11-28 05:06:29,389 INFO L140 encePairwiseOnDemand]: 26/34 looper letters, 288 selfloop transitions, 120 changer transitions 29/438 dead transitions. [2024-11-28 05:06:29,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 438 transitions, 9485 flow [2024-11-28 05:06:29,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 05:06:29,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-28 05:06:29,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-11-28 05:06:29,390 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3790849673202614 [2024-11-28 05:06:29,390 INFO L175 Difference]: Start difference. First operand has 292 places, 367 transitions, 7776 flow. Second operand 9 states and 116 transitions. [2024-11-28 05:06:29,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 438 transitions, 9485 flow [2024-11-28 05:06:30,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 438 transitions, 9255 flow, removed 51 selfloop flow, removed 16 redundant places. [2024-11-28 05:06:30,658 INFO L231 Difference]: Finished difference. Result has 281 places, 349 transitions, 7536 flow [2024-11-28 05:06:30,659 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=7556, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7536, PETRI_PLACES=281, PETRI_TRANSITIONS=349} [2024-11-28 05:06:30,659 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 251 predicate places. [2024-11-28 05:06:30,659 INFO L471 AbstractCegarLoop]: Abstraction has has 281 places, 349 transitions, 7536 flow [2024-11-28 05:06:30,659 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:06:30,659 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:06:30,659 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 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] [2024-11-28 05:06:30,659 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-11-28 05:06:30,659 INFO L396 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 05:06:30,660 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:06:30,660 INFO L85 PathProgramCache]: Analyzing trace with hash 12697802, now seen corresponding path program 9 times [2024-11-28 05:06:30,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:06:30,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271336959] [2024-11-28 05:06:30,660 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 05:06:30,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:06:30,671 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-28 05:06:30,671 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:06:30,954 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 05:06:30,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:06:30,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271336959] [2024-11-28 05:06:30,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271336959] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:06:30,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:06:30,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 05:06:30,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896644505] [2024-11-28 05:06:30,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:06:30,955 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 05:06:30,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:06:30,956 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 05:06:30,956 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-28 05:06:30,956 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-28 05:06:30,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 349 transitions, 7536 flow. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:06:30,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:06:30,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-28 05:06:30,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:06:32,859 INFO L124 PetriNetUnfolderBase]: 5674/9651 cut-off events. [2024-11-28 05:06:32,859 INFO L125 PetriNetUnfolderBase]: For 168271/168271 co-relation queries the response was YES. [2024-11-28 05:06:32,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75097 conditions, 9651 events. 5674/9651 cut-off events. For 168271/168271 co-relation queries the response was YES. Maximal size of possible extension queue 676. Compared 68466 event pairs, 353 based on Foata normal form. 4/9655 useless extension candidates. Maximal degree in co-relation 75006. Up to 2548 conditions per place. [2024-11-28 05:06:32,965 INFO L140 encePairwiseOnDemand]: 26/34 looper letters, 385 selfloop transitions, 115 changer transitions 78/579 dead transitions. [2024-11-28 05:06:32,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 579 transitions, 12542 flow [2024-11-28 05:06:32,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 05:06:32,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-28 05:06:32,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 136 transitions. [2024-11-28 05:06:32,966 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-11-28 05:06:32,966 INFO L175 Difference]: Start difference. First operand has 281 places, 349 transitions, 7536 flow. Second operand 10 states and 136 transitions. [2024-11-28 05:06:32,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 579 transitions, 12542 flow [2024-11-28 05:06:34,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 579 transitions, 12120 flow, removed 35 selfloop flow, removed 13 redundant places. [2024-11-28 05:06:34,317 INFO L231 Difference]: Finished difference. Result has 261 places, 338 transitions, 7143 flow [2024-11-28 05:06:34,318 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=7146, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7143, PETRI_PLACES=261, PETRI_TRANSITIONS=338} [2024-11-28 05:06:34,318 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 231 predicate places. [2024-11-28 05:06:34,318 INFO L471 AbstractCegarLoop]: Abstraction has has 261 places, 338 transitions, 7143 flow [2024-11-28 05:06:34,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:06:34,318 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:06:34,318 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 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] [2024-11-28 05:06:34,318 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-11-28 05:06:34,318 INFO L396 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 05:06:34,319 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:06:34,319 INFO L85 PathProgramCache]: Analyzing trace with hash -2047336046, now seen corresponding path program 10 times [2024-11-28 05:06:34,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:06:34,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310108596] [2024-11-28 05:06:34,319 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 05:06:34,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:06:34,333 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 05:06:34,333 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:06:34,846 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:06:34,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:06:34,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310108596] [2024-11-28 05:06:34,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310108596] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:06:34,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900544399] [2024-11-28 05:06:34,847 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 05:06:34,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:06:34,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:06:34,848 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:06:34,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-11-28 05:06:34,976 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 05:06:34,976 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:06:34,977 INFO L256 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-28 05:06:34,978 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:06:35,376 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:06:35,376 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:06:36,311 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:06:36,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1900544399] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:06:36,311 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:06:36,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 31 [2024-11-28 05:06:36,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327335601] [2024-11-28 05:06:36,311 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:06:36,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-28 05:06:36,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:06:36,312 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-28 05:06:36,312 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=813, Unknown=0, NotChecked=0, Total=992 [2024-11-28 05:06:36,313 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-28 05:06:36,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 338 transitions, 7143 flow. Second operand has 32 states, 32 states have (on average 5.53125) internal successors, (177), 32 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:06:36,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:06:36,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-28 05:06:36,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:06:41,533 INFO L124 PetriNetUnfolderBase]: 10199/16971 cut-off events. [2024-11-28 05:06:41,534 INFO L125 PetriNetUnfolderBase]: For 255839/255839 co-relation queries the response was YES. [2024-11-28 05:06:41,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129759 conditions, 16971 events. 10199/16971 cut-off events. For 255839/255839 co-relation queries the response was YES. Maximal size of possible extension queue 1086. Compared 127028 event pairs, 557 based on Foata normal form. 4/16975 useless extension candidates. Maximal degree in co-relation 129675. Up to 3269 conditions per place. [2024-11-28 05:06:41,735 INFO L140 encePairwiseOnDemand]: 18/34 looper letters, 637 selfloop transitions, 333 changer transitions 150/1121 dead transitions. [2024-11-28 05:06:41,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 1121 transitions, 22124 flow [2024-11-28 05:06:41,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-11-28 05:06:41,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2024-11-28 05:06:41,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 486 transitions. [2024-11-28 05:06:41,736 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.31074168797953966 [2024-11-28 05:06:41,737 INFO L175 Difference]: Start difference. First operand has 261 places, 338 transitions, 7143 flow. Second operand 46 states and 486 transitions. [2024-11-28 05:06:41,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 1121 transitions, 22124 flow [2024-11-28 05:06:44,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 1121 transitions, 21634 flow, removed 32 selfloop flow, removed 11 redundant places. [2024-11-28 05:06:44,457 INFO L231 Difference]: Finished difference. Result has 314 places, 483 transitions, 11451 flow [2024-11-28 05:06:44,457 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=6917, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=11451, PETRI_PLACES=314, PETRI_TRANSITIONS=483} [2024-11-28 05:06:44,458 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 284 predicate places. [2024-11-28 05:06:44,458 INFO L471 AbstractCegarLoop]: Abstraction has has 314 places, 483 transitions, 11451 flow [2024-11-28 05:06:44,458 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.53125) internal successors, (177), 32 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:06:44,458 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:06:44,458 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:06:44,464 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2024-11-28 05:06:44,658 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2024-11-28 05:06:44,658 INFO L396 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 05:06:44,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:06:44,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1760585692, now seen corresponding path program 2 times [2024-11-28 05:06:44,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:06:44,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216299967] [2024-11-28 05:06:44,659 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:06:44,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:06:44,676 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 05:06:44,676 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:06:44,819 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 05:06:44,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:06:44,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216299967] [2024-11-28 05:06:44,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216299967] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:06:44,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398641395] [2024-11-28 05:06:44,820 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:06:44,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:06:44,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:06:44,822 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:06:44,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-11-28 05:06:44,962 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 05:06:44,962 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:06:44,963 INFO L256 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-28 05:06:44,964 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:06:45,077 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 05:06:45,077 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:06:45,187 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 05:06:45,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1398641395] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:06:45,187 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:06:45,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 20 [2024-11-28 05:06:45,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233430814] [2024-11-28 05:06:45,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:06:45,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-28 05:06:45,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:06:45,188 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-28 05:06:45,188 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2024-11-28 05:06:45,188 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-28 05:06:45,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 483 transitions, 11451 flow. Second operand has 21 states, 21 states have (on average 5.428571428571429) internal successors, (114), 21 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:06:45,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:06:45,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-28 05:06:45,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:06:50,596 INFO L124 PetriNetUnfolderBase]: 12367/20483 cut-off events. [2024-11-28 05:06:50,596 INFO L125 PetriNetUnfolderBase]: For 350394/350394 co-relation queries the response was YES. [2024-11-28 05:06:50,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164951 conditions, 20483 events. 12367/20483 cut-off events. For 350394/350394 co-relation queries the response was YES. Maximal size of possible extension queue 1249. Compared 157572 event pairs, 2285 based on Foata normal form. 90/20573 useless extension candidates. Maximal degree in co-relation 164851. Up to 8183 conditions per place. [2024-11-28 05:06:50,906 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 498 selfloop transitions, 163 changer transitions 80/742 dead transitions. [2024-11-28 05:06:50,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 742 transitions, 17836 flow [2024-11-28 05:06:50,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-28 05:06:50,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-28 05:06:50,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 159 transitions. [2024-11-28 05:06:50,907 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2922794117647059 [2024-11-28 05:06:50,907 INFO L175 Difference]: Start difference. First operand has 314 places, 483 transitions, 11451 flow. Second operand 16 states and 159 transitions. [2024-11-28 05:06:50,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 742 transitions, 17836 flow [2024-11-28 05:06:55,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 742 transitions, 16851 flow, removed 196 selfloop flow, removed 20 redundant places. [2024-11-28 05:06:55,597 INFO L231 Difference]: Finished difference. Result has 295 places, 501 transitions, 11749 flow [2024-11-28 05:06:55,598 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=10818, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=483, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=11749, PETRI_PLACES=295, PETRI_TRANSITIONS=501} [2024-11-28 05:06:55,598 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 265 predicate places. [2024-11-28 05:06:55,598 INFO L471 AbstractCegarLoop]: Abstraction has has 295 places, 501 transitions, 11749 flow [2024-11-28 05:06:55,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.428571428571429) internal successors, (114), 21 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:06:55,598 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:06:55,598 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:06:55,604 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2024-11-28 05:06:55,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:06:55,799 INFO L396 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 05:06:55,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:06:55,799 INFO L85 PathProgramCache]: Analyzing trace with hash -2063352355, now seen corresponding path program 2 times [2024-11-28 05:06:55,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:06:55,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266460099] [2024-11-28 05:06:55,800 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:06:55,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:06:55,819 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 05:06:55,819 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:06:56,102 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:06:56,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:06:56,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266460099] [2024-11-28 05:06:56,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266460099] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:06:56,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888239098] [2024-11-28 05:06:56,102 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:06:56,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:06:56,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:06:56,104 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:06:56,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84a6781e-ed65-4607-9c65-0b3b9af7b2d2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-11-28 05:06:56,238 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 05:06:56,238 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:06:56,239 INFO L256 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-28 05:06:56,239 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:06:56,406 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:06:56,406 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:06:56,579 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 05:06:56,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1888239098] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:06:56,579 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:06:56,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 24 [2024-11-28 05:06:56,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134396561] [2024-11-28 05:06:56,579 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:06:56,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-28 05:06:56,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:06:56,580 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-28 05:06:56,580 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=464, Unknown=0, NotChecked=0, Total=600 [2024-11-28 05:06:56,580 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-11-28 05:06:56,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 501 transitions, 11749 flow. Second operand has 25 states, 25 states have (on average 5.48) internal successors, (137), 25 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:06:56,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:06:56,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-11-28 05:06:56,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:07:02,375 INFO L124 PetriNetUnfolderBase]: 14437/23419 cut-off events. [2024-11-28 05:07:02,376 INFO L125 PetriNetUnfolderBase]: For 442797/442797 co-relation queries the response was YES. [2024-11-28 05:07:02,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 194442 conditions, 23419 events. 14437/23419 cut-off events. For 442797/442797 co-relation queries the response was YES. Maximal size of possible extension queue 1314. Compared 175098 event pairs, 2464 based on Foata normal form. 480/23899 useless extension candidates. Maximal degree in co-relation 194343. Up to 4601 conditions per place. [2024-11-28 05:07:02,674 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 1122 selfloop transitions, 196 changer transitions 1/1320 dead transitions. [2024-11-28 05:07:02,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 1320 transitions, 32352 flow [2024-11-28 05:07:02,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-28 05:07:02,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-28 05:07:02,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 239 transitions. [2024-11-28 05:07:02,675 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.30562659846547313 [2024-11-28 05:07:02,675 INFO L175 Difference]: Start difference. First operand has 295 places, 501 transitions, 11749 flow. Second operand 23 states and 239 transitions. [2024-11-28 05:07:02,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 1320 transitions, 32352 flow