./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec3_product09.cil.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_8fbe6e3d-330f-428b-b973-da481ee556ad/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fbe6e3d-330f-428b-b973-da481ee556ad/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_8fbe6e3d-330f-428b-b973-da481ee556ad/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fbe6e3d-330f-428b-b973-da481ee556ad/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product09.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fbe6e3d-330f-428b-b973-da481ee556ad/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_8fbe6e3d-330f-428b-b973-da481ee556ad/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 67b10dcf95f436cfd8f02a55d7d1d272656f1382a4eb6ab4ad3bba992e95e024 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:15:58,670 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:15:58,777 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fbe6e3d-330f-428b-b973-da481ee556ad/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 04:15:58,784 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:15:58,784 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:15:58,812 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:15:58,813 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:15:58,814 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:15:58,814 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:15:58,814 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:15:58,814 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:15:58,815 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:15:58,815 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:15:58,815 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:15:58,816 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:15:58,816 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:15:58,816 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:15:58,816 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:15:58,816 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:15:58,817 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:15:58,817 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:15:58,817 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:15:58,817 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:15:58,817 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:15:58,817 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:15:58,818 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:15:58,818 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:15:58,818 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:15:58,818 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:15:58,818 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:15:58,818 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:15:58,818 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:15:58,818 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:15:58,819 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:15:58,819 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:15:58,819 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:15:58,819 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:15:58,819 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:15:58,819 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:15:58,819 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:15:58,819 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 04:15:58,820 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 04:15:58,820 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:15:58,820 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:15:58,820 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:15:58,820 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:15:58,820 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:15:58,821 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:15:58,821 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_8fbe6e3d-330f-428b-b973-da481ee556ad/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 -> 67b10dcf95f436cfd8f02a55d7d1d272656f1382a4eb6ab4ad3bba992e95e024 [2024-11-28 04:15:59,194 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:15:59,209 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:15:59,212 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:15:59,215 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:15:59,215 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:15:59,218 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fbe6e3d-330f-428b-b973-da481ee556ad/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/product-lines/elevator_spec3_product09.cil.c [2024-11-28 04:16:02,429 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fbe6e3d-330f-428b-b973-da481ee556ad/bin/uautomizer-verify-aQ6SnzHsRB/data/f6e21751b/f7a772c5009b4f1d8d10732940163e10/FLAGd4220f71d [2024-11-28 04:16:03,019 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:16:03,020 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fbe6e3d-330f-428b-b973-da481ee556ad/sv-benchmarks/c/product-lines/elevator_spec3_product09.cil.c [2024-11-28 04:16:03,051 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fbe6e3d-330f-428b-b973-da481ee556ad/bin/uautomizer-verify-aQ6SnzHsRB/data/f6e21751b/f7a772c5009b4f1d8d10732940163e10/FLAGd4220f71d [2024-11-28 04:16:03,068 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fbe6e3d-330f-428b-b973-da481ee556ad/bin/uautomizer-verify-aQ6SnzHsRB/data/f6e21751b/f7a772c5009b4f1d8d10732940163e10 [2024-11-28 04:16:03,070 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:16:03,072 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:16:03,074 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:16:03,074 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:16:03,079 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:16:03,080 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:16:03" (1/1) ... [2024-11-28 04:16:03,081 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21b39448 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:16:03, skipping insertion in model container [2024-11-28 04:16:03,082 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:16:03" (1/1) ... [2024-11-28 04:16:03,176 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:16:03,611 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_8fbe6e3d-330f-428b-b973-da481ee556ad/sv-benchmarks/c/product-lines/elevator_spec3_product09.cil.c[21710,21723] [2024-11-28 04:16:04,009 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:16:04,029 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:16:04,040 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [48] [2024-11-28 04:16:04,042 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [147] [2024-11-28 04:16:04,042 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [165] [2024-11-28 04:16:04,043 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [832] [2024-11-28 04:16:04,044 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [952] [2024-11-28 04:16:04,044 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [961] [2024-11-28 04:16:04,044 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [2404] [2024-11-28 04:16:04,044 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [2442] [2024-11-28 04:16:04,047 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification3_spec.i","") [2790] [2024-11-28 04:16:04,048 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [2976] [2024-11-28 04:16:04,108 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_8fbe6e3d-330f-428b-b973-da481ee556ad/sv-benchmarks/c/product-lines/elevator_spec3_product09.cil.c[21710,21723] [2024-11-28 04:16:04,278 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:16:04,326 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:16:04,326 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:16:04 WrapperNode [2024-11-28 04:16:04,327 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:16:04,328 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:16:04,328 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:16:04,328 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:16:04,343 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:16:04" (1/1) ... [2024-11-28 04:16:04,382 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:16:04" (1/1) ... [2024-11-28 04:16:04,457 INFO L138 Inliner]: procedures = 87, calls = 336, calls flagged for inlining = 23, calls inlined = 20, statements flattened = 806 [2024-11-28 04:16:04,461 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:16:04,462 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:16:04,462 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:16:04,462 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:16:04,483 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:16:04" (1/1) ... [2024-11-28 04:16:04,483 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:16:04" (1/1) ... [2024-11-28 04:16:04,493 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:16:04" (1/1) ... [2024-11-28 04:16:04,544 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. The 0 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. [2024-11-28 04:16:04,547 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:16:04" (1/1) ... [2024-11-28 04:16:04,548 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:16:04" (1/1) ... [2024-11-28 04:16:04,580 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:16:04" (1/1) ... [2024-11-28 04:16:04,586 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:16:04" (1/1) ... [2024-11-28 04:16:04,603 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:16:04" (1/1) ... [2024-11-28 04:16:04,609 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:16:04" (1/1) ... [2024-11-28 04:16:04,614 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:16:04" (1/1) ... [2024-11-28 04:16:04,631 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:16:04,632 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:16:04,632 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:16:04,633 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:16:04,634 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:16:04" (1/1) ... [2024-11-28 04:16:04,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:16:04,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fbe6e3d-330f-428b-b973-da481ee556ad/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:16:04,681 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fbe6e3d-330f-428b-b973-da481ee556ad/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:16:04,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fbe6e3d-330f-428b-b973-da481ee556ad/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:16:04,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:16:04,713 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2024-11-28 04:16:04,714 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2024-11-28 04:16:04,714 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-11-28 04:16:04,714 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-11-28 04:16:04,714 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-11-28 04:16:04,714 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-11-28 04:16:04,714 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2024-11-28 04:16:04,714 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2024-11-28 04:16:04,714 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-11-28 04:16:04,714 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-11-28 04:16:04,714 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-28 04:16:04,715 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-28 04:16:04,715 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-28 04:16:04,715 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-28 04:16:04,715 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-11-28 04:16:04,715 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-11-28 04:16:04,715 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-11-28 04:16:04,715 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-11-28 04:16:04,715 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-11-28 04:16:04,715 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-11-28 04:16:04,715 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-11-28 04:16:04,715 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-11-28 04:16:04,716 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2024-11-28 04:16:04,716 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2024-11-28 04:16:04,716 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-11-28 04:16:04,716 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-11-28 04:16:04,716 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2024-11-28 04:16:04,716 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2024-11-28 04:16:04,716 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-11-28 04:16:04,716 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-11-28 04:16:04,716 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-11-28 04:16:04,716 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-11-28 04:16:04,716 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-11-28 04:16:04,717 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-11-28 04:16:04,717 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-11-28 04:16:04,717 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-11-28 04:16:04,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:16:04,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 04:16:04,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 04:16:04,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-28 04:16:04,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-28 04:16:04,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-28 04:16:04,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-28 04:16:04,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-28 04:16:04,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-28 04:16:04,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-28 04:16:04,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-28 04:16:04,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-28 04:16:04,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-28 04:16:04,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-28 04:16:04,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-11-28 04:16:04,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-11-28 04:16:04,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-11-28 04:16:04,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-11-28 04:16:04,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2024-11-28 04:16:04,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2024-11-28 04:16:04,719 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2024-11-28 04:16:04,719 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2024-11-28 04:16:04,719 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-11-28 04:16:04,719 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-11-28 04:16:04,719 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-11-28 04:16:04,719 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-11-28 04:16:04,719 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-11-28 04:16:04,719 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-11-28 04:16:04,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:16:04,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:16:04,719 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-11-28 04:16:04,719 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-11-28 04:16:04,960 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:16:04,963 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:16:06,598 INFO L? ?]: Removed 429 outVars from TransFormulas that were not future-live. [2024-11-28 04:16:06,599 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:16:06,642 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:16:06,642 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 04:16:06,642 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:16:06 BoogieIcfgContainer [2024-11-28 04:16:06,642 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:16:06,645 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:16:06,648 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:16:06,653 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:16:06,653 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:16:03" (1/3) ... [2024-11-28 04:16:06,654 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b94479a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:16:06, skipping insertion in model container [2024-11-28 04:16:06,654 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:16:04" (2/3) ... [2024-11-28 04:16:06,654 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b94479a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:16:06, skipping insertion in model container [2024-11-28 04:16:06,654 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:16:06" (3/3) ... [2024-11-28 04:16:06,655 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product09.cil.c [2024-11-28 04:16:06,671 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:16:06,673 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec3_product09.cil.c that has 24 procedures, 554 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-28 04:16:06,754 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:16:06,769 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;@3674dbbd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:16:06,770 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 04:16:06,778 INFO L276 IsEmpty]: Start isEmpty. Operand has 554 states, 431 states have (on average 1.6960556844547563) internal successors, (731), 449 states have internal predecessors, (731), 98 states have call successors, (98), 23 states have call predecessors, (98), 23 states have return successors, (98), 95 states have call predecessors, (98), 98 states have call successors, (98) [2024-11-28 04:16:06,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-28 04:16:06,813 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:16:06,814 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:16:06,814 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:16:06,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:16:06,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1516857040, now seen corresponding path program 1 times [2024-11-28 04:16:06,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:16:06,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850812299] [2024-11-28 04:16:06,828 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:16:06,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:16:07,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:16:08,095 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 04:16:08,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:16:08,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850812299] [2024-11-28 04:16:08,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850812299] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:16:08,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:16:08,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 04:16:08,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558845397] [2024-11-28 04:16:08,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:16:08,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:16:08,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:16:08,137 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:16:08,137 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:16:08,140 INFO L87 Difference]: Start difference. First operand has 554 states, 431 states have (on average 1.6960556844547563) internal successors, (731), 449 states have internal predecessors, (731), 98 states have call successors, (98), 23 states have call predecessors, (98), 23 states have return successors, (98), 95 states have call predecessors, (98), 98 states have call successors, (98) Second operand has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-28 04:16:08,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:16:08,508 INFO L93 Difference]: Finished difference Result 1105 states and 1866 transitions. [2024-11-28 04:16:08,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:16:08,512 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 85 [2024-11-28 04:16:08,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:16:08,534 INFO L225 Difference]: With dead ends: 1105 [2024-11-28 04:16:08,535 INFO L226 Difference]: Without dead ends: 559 [2024-11-28 04:16:08,548 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:16:08,554 INFO L435 NwaCegarLoop]: 910 mSDtfsCounter, 91 mSDsluCounter, 4465 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 5375 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:16:08,556 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 5375 Invalid, 77 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:16:08,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2024-11-28 04:16:08,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 557. [2024-11-28 04:16:08,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 434 states have (on average 1.6866359447004609) internal successors, (732), 452 states have internal predecessors, (732), 99 states have call successors, (99), 23 states have call predecessors, (99), 23 states have return successors, (98), 94 states have call predecessors, (98), 96 states have call successors, (98) [2024-11-28 04:16:08,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 929 transitions. [2024-11-28 04:16:08,720 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 929 transitions. Word has length 85 [2024-11-28 04:16:08,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:16:08,720 INFO L471 AbstractCegarLoop]: Abstraction has 557 states and 929 transitions. [2024-11-28 04:16:08,721 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-28 04:16:08,721 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 929 transitions. [2024-11-28 04:16:08,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-28 04:16:08,731 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:16:08,732 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:16:08,732 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 04:16:08,734 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:16:08,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:16:08,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1285694680, now seen corresponding path program 1 times [2024-11-28 04:16:08,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:16:08,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947315846] [2024-11-28 04:16:08,739 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:16:08,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:16:08,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:16:09,287 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 04:16:09,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:16:09,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947315846] [2024-11-28 04:16:09,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947315846] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:16:09,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:16:09,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 04:16:09,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902453533] [2024-11-28 04:16:09,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:16:09,292 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:16:09,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:16:09,293 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:16:09,293 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:16:09,294 INFO L87 Difference]: Start difference. First operand 557 states and 929 transitions. Second operand has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-28 04:16:09,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:16:09,512 INFO L93 Difference]: Finished difference Result 1109 states and 1861 transitions. [2024-11-28 04:16:09,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:16:09,513 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 86 [2024-11-28 04:16:09,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:16:09,522 INFO L225 Difference]: With dead ends: 1109 [2024-11-28 04:16:09,523 INFO L226 Difference]: Without dead ends: 568 [2024-11-28 04:16:09,527 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:16:09,528 INFO L435 NwaCegarLoop]: 911 mSDtfsCounter, 90 mSDsluCounter, 4459 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 5370 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:16:09,529 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 5370 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:16:09,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2024-11-28 04:16:09,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 557. [2024-11-28 04:16:09,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 434 states have (on average 1.6866359447004609) internal successors, (732), 452 states have internal predecessors, (732), 99 states have call successors, (99), 23 states have call predecessors, (99), 23 states have return successors, (98), 94 states have call predecessors, (98), 96 states have call successors, (98) [2024-11-28 04:16:09,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 929 transitions. [2024-11-28 04:16:09,605 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 929 transitions. Word has length 86 [2024-11-28 04:16:09,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:16:09,606 INFO L471 AbstractCegarLoop]: Abstraction has 557 states and 929 transitions. [2024-11-28 04:16:09,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-28 04:16:09,606 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 929 transitions. [2024-11-28 04:16:09,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-28 04:16:09,617 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:16:09,617 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:16:09,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 04:16:09,617 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:16:09,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:16:09,618 INFO L85 PathProgramCache]: Analyzing trace with hash -394196685, now seen corresponding path program 1 times [2024-11-28 04:16:09,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:16:09,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383379406] [2024-11-28 04:16:09,618 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:16:09,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:16:09,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:16:09,919 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 04:16:09,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:16:09,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383379406] [2024-11-28 04:16:09,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383379406] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:16:09,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:16:09,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:16:09,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97913631] [2024-11-28 04:16:09,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:16:09,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:16:09,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:16:09,921 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:16:09,921 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:16:09,922 INFO L87 Difference]: Start difference. First operand 557 states and 929 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-28 04:16:10,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:16:10,035 INFO L93 Difference]: Finished difference Result 1096 states and 1839 transitions. [2024-11-28 04:16:10,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:16:10,036 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 86 [2024-11-28 04:16:10,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:16:10,043 INFO L225 Difference]: With dead ends: 1096 [2024-11-28 04:16:10,043 INFO L226 Difference]: Without dead ends: 527 [2024-11-28 04:16:10,047 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:16:10,048 INFO L435 NwaCegarLoop]: 899 mSDtfsCounter, 14 mSDsluCounter, 1793 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2692 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:16:10,049 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2692 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:16:10,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2024-11-28 04:16:10,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 527. [2024-11-28 04:16:10,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527 states, 407 states have (on average 1.6707616707616708) internal successors, (680), 423 states have internal predecessors, (680), 98 states have call successors, (98), 23 states have call predecessors, (98), 21 states have return successors, (95), 93 states have call predecessors, (95), 95 states have call successors, (95) [2024-11-28 04:16:10,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 873 transitions. [2024-11-28 04:16:10,100 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 873 transitions. Word has length 86 [2024-11-28 04:16:10,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:16:10,101 INFO L471 AbstractCegarLoop]: Abstraction has 527 states and 873 transitions. [2024-11-28 04:16:10,101 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-28 04:16:10,101 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 873 transitions. [2024-11-28 04:16:10,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-28 04:16:10,105 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:16:10,105 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:16:10,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 04:16:10,106 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:16:10,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:16:10,108 INFO L85 PathProgramCache]: Analyzing trace with hash -526853804, now seen corresponding path program 1 times [2024-11-28 04:16:10,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:16:10,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138319970] [2024-11-28 04:16:10,108 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:16:10,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:16:10,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:16:10,578 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 04:16:10,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:16:10,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138319970] [2024-11-28 04:16:10,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138319970] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:16:10,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:16:10,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 04:16:10,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769889073] [2024-11-28 04:16:10,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:16:10,579 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:16:10,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:16:10,580 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:16:10,580 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:16:10,580 INFO L87 Difference]: Start difference. First operand 527 states and 873 transitions. Second operand has 7 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-28 04:16:10,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:16:10,734 INFO L93 Difference]: Finished difference Result 1047 states and 1745 transitions. [2024-11-28 04:16:10,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:16:10,735 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 87 [2024-11-28 04:16:10,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:16:10,740 INFO L225 Difference]: With dead ends: 1047 [2024-11-28 04:16:10,741 INFO L226 Difference]: Without dead ends: 521 [2024-11-28 04:16:10,744 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:16:10,747 INFO L435 NwaCegarLoop]: 863 mSDtfsCounter, 63 mSDsluCounter, 4257 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 5120 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:16:10,747 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 5120 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:16:10,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2024-11-28 04:16:10,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 521. [2024-11-28 04:16:10,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 521 states, 401 states have (on average 1.6633416458852868) internal successors, (667), 417 states have internal predecessors, (667), 98 states have call successors, (98), 23 states have call predecessors, (98), 21 states have return successors, (95), 93 states have call predecessors, (95), 95 states have call successors, (95) [2024-11-28 04:16:10,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 860 transitions. [2024-11-28 04:16:10,791 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 860 transitions. Word has length 87 [2024-11-28 04:16:10,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:16:10,791 INFO L471 AbstractCegarLoop]: Abstraction has 521 states and 860 transitions. [2024-11-28 04:16:10,791 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-28 04:16:10,791 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 860 transitions. [2024-11-28 04:16:10,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-28 04:16:10,795 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:16:10,795 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:16:10,796 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 04:16:10,796 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:16:10,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:16:10,797 INFO L85 PathProgramCache]: Analyzing trace with hash 979730557, now seen corresponding path program 1 times [2024-11-28 04:16:10,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:16:10,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403828297] [2024-11-28 04:16:10,797 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:16:10,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:16:10,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:16:11,134 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 04:16:11,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:16:11,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403828297] [2024-11-28 04:16:11,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403828297] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:16:11,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:16:11,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 04:16:11,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343334984] [2024-11-28 04:16:11,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:16:11,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:16:11,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:16:11,137 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:16:11,138 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:16:11,138 INFO L87 Difference]: Start difference. First operand 521 states and 860 transitions. Second operand has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-28 04:16:11,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:16:11,281 INFO L93 Difference]: Finished difference Result 1035 states and 1719 transitions. [2024-11-28 04:16:11,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:16:11,282 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 88 [2024-11-28 04:16:11,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:16:11,287 INFO L225 Difference]: With dead ends: 1035 [2024-11-28 04:16:11,288 INFO L226 Difference]: Without dead ends: 515 [2024-11-28 04:16:11,291 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:16:11,292 INFO L435 NwaCegarLoop]: 851 mSDtfsCounter, 49 mSDsluCounter, 4209 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 5060 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:16:11,293 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 5060 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:16:11,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2024-11-28 04:16:11,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 515. [2024-11-28 04:16:11,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 395 states have (on average 1.6531645569620252) internal successors, (653), 411 states have internal predecessors, (653), 98 states have call successors, (98), 23 states have call predecessors, (98), 21 states have return successors, (95), 93 states have call predecessors, (95), 95 states have call successors, (95) [2024-11-28 04:16:11,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 846 transitions. [2024-11-28 04:16:11,325 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 846 transitions. Word has length 88 [2024-11-28 04:16:11,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:16:11,325 INFO L471 AbstractCegarLoop]: Abstraction has 515 states and 846 transitions. [2024-11-28 04:16:11,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-28 04:16:11,325 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 846 transitions. [2024-11-28 04:16:11,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-28 04:16:11,329 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:16:11,329 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:16:11,329 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 04:16:11,330 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:16:11,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:16:11,330 INFO L85 PathProgramCache]: Analyzing trace with hash -935433864, now seen corresponding path program 1 times [2024-11-28 04:16:11,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:16:11,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585917029] [2024-11-28 04:16:11,331 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:16:11,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:16:11,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:16:11,525 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 04:16:11,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:16:11,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585917029] [2024-11-28 04:16:11,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585917029] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:16:11,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:16:11,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:16:11,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147486372] [2024-11-28 04:16:11,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:16:11,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:16:11,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:16:11,527 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:16:11,527 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:16:11,527 INFO L87 Difference]: Start difference. First operand 515 states and 846 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-28 04:16:11,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:16:11,646 INFO L93 Difference]: Finished difference Result 1014 states and 1678 transitions. [2024-11-28 04:16:11,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:16:11,646 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 89 [2024-11-28 04:16:11,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:16:11,653 INFO L225 Difference]: With dead ends: 1014 [2024-11-28 04:16:11,653 INFO L226 Difference]: Without dead ends: 515 [2024-11-28 04:16:11,657 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:16:11,659 INFO L435 NwaCegarLoop]: 831 mSDtfsCounter, 15 mSDsluCounter, 1647 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 2478 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:16:11,660 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 2478 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:16:11,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2024-11-28 04:16:11,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 515. [2024-11-28 04:16:11,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 395 states have (on average 1.650632911392405) internal successors, (652), 411 states have internal predecessors, (652), 98 states have call successors, (98), 23 states have call predecessors, (98), 21 states have return successors, (95), 93 states have call predecessors, (95), 95 states have call successors, (95) [2024-11-28 04:16:11,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 845 transitions. [2024-11-28 04:16:11,698 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 845 transitions. Word has length 89 [2024-11-28 04:16:11,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:16:11,698 INFO L471 AbstractCegarLoop]: Abstraction has 515 states and 845 transitions. [2024-11-28 04:16:11,699 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-28 04:16:11,699 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 845 transitions. [2024-11-28 04:16:11,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-28 04:16:11,745 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:16:11,745 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:16:11,745 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 04:16:11,746 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:16:11,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:16:11,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1329532892, now seen corresponding path program 1 times [2024-11-28 04:16:11,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:16:11,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923473336] [2024-11-28 04:16:11,747 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:16:11,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:16:11,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:16:11,944 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 04:16:11,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:16:11,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923473336] [2024-11-28 04:16:11,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923473336] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:16:11,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:16:11,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:16:11,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010296983] [2024-11-28 04:16:11,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:16:11,946 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:16:11,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:16:11,947 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:16:11,947 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:16:11,947 INFO L87 Difference]: Start difference. First operand 515 states and 845 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-28 04:16:12,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:16:12,037 INFO L93 Difference]: Finished difference Result 1014 states and 1676 transitions. [2024-11-28 04:16:12,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:16:12,038 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 90 [2024-11-28 04:16:12,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:16:12,047 INFO L225 Difference]: With dead ends: 1014 [2024-11-28 04:16:12,047 INFO L226 Difference]: Without dead ends: 515 [2024-11-28 04:16:12,050 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:16:12,054 INFO L435 NwaCegarLoop]: 832 mSDtfsCounter, 14 mSDsluCounter, 1648 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2480 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:16:12,054 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2480 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:16:12,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2024-11-28 04:16:12,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 515. [2024-11-28 04:16:12,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 395 states have (on average 1.6481012658227847) internal successors, (651), 411 states have internal predecessors, (651), 98 states have call successors, (98), 23 states have call predecessors, (98), 21 states have return successors, (95), 93 states have call predecessors, (95), 95 states have call successors, (95) [2024-11-28 04:16:12,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 844 transitions. [2024-11-28 04:16:12,080 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 844 transitions. Word has length 90 [2024-11-28 04:16:12,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:16:12,081 INFO L471 AbstractCegarLoop]: Abstraction has 515 states and 844 transitions. [2024-11-28 04:16:12,081 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-28 04:16:12,081 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 844 transitions. [2024-11-28 04:16:12,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-28 04:16:12,083 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:16:12,084 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:16:12,084 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 04:16:12,084 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:16:12,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:16:12,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1681351421, now seen corresponding path program 1 times [2024-11-28 04:16:12,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:16:12,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295022700] [2024-11-28 04:16:12,085 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:16:12,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:16:12,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:16:12,248 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 04:16:12,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:16:12,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295022700] [2024-11-28 04:16:12,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295022700] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:16:12,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:16:12,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:16:12,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827937341] [2024-11-28 04:16:12,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:16:12,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:16:12,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:16:12,250 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:16:12,250 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:16:12,251 INFO L87 Difference]: Start difference. First operand 515 states and 844 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-28 04:16:12,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:16:12,319 INFO L93 Difference]: Finished difference Result 1014 states and 1674 transitions. [2024-11-28 04:16:12,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:16:12,319 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 91 [2024-11-28 04:16:12,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:16:12,324 INFO L225 Difference]: With dead ends: 1014 [2024-11-28 04:16:12,324 INFO L226 Difference]: Without dead ends: 515 [2024-11-28 04:16:12,328 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:16:12,328 INFO L435 NwaCegarLoop]: 833 mSDtfsCounter, 13 mSDsluCounter, 1649 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2482 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:16:12,329 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2482 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:16:12,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2024-11-28 04:16:12,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 515. [2024-11-28 04:16:12,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 395 states have (on average 1.6455696202531647) internal successors, (650), 411 states have internal predecessors, (650), 98 states have call successors, (98), 23 states have call predecessors, (98), 21 states have return successors, (95), 93 states have call predecessors, (95), 95 states have call successors, (95) [2024-11-28 04:16:12,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 843 transitions. [2024-11-28 04:16:12,357 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 843 transitions. Word has length 91 [2024-11-28 04:16:12,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:16:12,358 INFO L471 AbstractCegarLoop]: Abstraction has 515 states and 843 transitions. [2024-11-28 04:16:12,358 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-28 04:16:12,358 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 843 transitions. [2024-11-28 04:16:12,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-28 04:16:12,361 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:16:12,361 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:16:12,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 04:16:12,362 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:16:12,362 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:16:12,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1439850239, now seen corresponding path program 1 times [2024-11-28 04:16:12,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:16:12,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441235087] [2024-11-28 04:16:12,362 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:16:12,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:16:12,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:16:12,537 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 04:16:12,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:16:12,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441235087] [2024-11-28 04:16:12,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441235087] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:16:12,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:16:12,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:16:12,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720245048] [2024-11-28 04:16:12,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:16:12,538 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:16:12,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:16:12,539 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:16:12,539 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:16:12,539 INFO L87 Difference]: Start difference. First operand 515 states and 843 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-28 04:16:12,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:16:12,616 INFO L93 Difference]: Finished difference Result 1014 states and 1672 transitions. [2024-11-28 04:16:12,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:16:12,616 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 92 [2024-11-28 04:16:12,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:16:12,621 INFO L225 Difference]: With dead ends: 1014 [2024-11-28 04:16:12,621 INFO L226 Difference]: Without dead ends: 515 [2024-11-28 04:16:12,625 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:16:12,627 INFO L435 NwaCegarLoop]: 834 mSDtfsCounter, 12 mSDsluCounter, 1650 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2484 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:16:12,627 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2484 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:16:12,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2024-11-28 04:16:12,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 515. [2024-11-28 04:16:12,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 395 states have (on average 1.6430379746835444) internal successors, (649), 411 states have internal predecessors, (649), 98 states have call successors, (98), 23 states have call predecessors, (98), 21 states have return successors, (95), 93 states have call predecessors, (95), 95 states have call successors, (95) [2024-11-28 04:16:12,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 842 transitions. [2024-11-28 04:16:12,656 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 842 transitions. Word has length 92 [2024-11-28 04:16:12,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:16:12,656 INFO L471 AbstractCegarLoop]: Abstraction has 515 states and 842 transitions. [2024-11-28 04:16:12,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-28 04:16:12,656 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 842 transitions. [2024-11-28 04:16:12,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-28 04:16:12,659 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:16:12,659 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:16:12,660 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 04:16:12,660 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:16:12,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:16:12,661 INFO L85 PathProgramCache]: Analyzing trace with hash -555528062, now seen corresponding path program 1 times [2024-11-28 04:16:12,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:16:12,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652351726] [2024-11-28 04:16:12,662 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:16:12,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:16:12,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:16:13,068 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 04:16:13,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:16:13,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652351726] [2024-11-28 04:16:13,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652351726] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:16:13,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:16:13,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:16:13,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183768476] [2024-11-28 04:16:13,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:16:13,070 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:16:13,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:16:13,071 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:16:13,071 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:16:13,071 INFO L87 Difference]: Start difference. First operand 515 states and 842 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 4 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-28 04:16:13,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:16:13,573 INFO L93 Difference]: Finished difference Result 1454 states and 2405 transitions. [2024-11-28 04:16:13,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:16:13,575 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 4 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 93 [2024-11-28 04:16:13,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:16:13,587 INFO L225 Difference]: With dead ends: 1454 [2024-11-28 04:16:13,587 INFO L226 Difference]: Without dead ends: 957 [2024-11-28 04:16:13,592 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:16:13,593 INFO L435 NwaCegarLoop]: 888 mSDtfsCounter, 709 mSDsluCounter, 2515 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 709 SdHoareTripleChecker+Valid, 3403 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:16:13,594 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [709 Valid, 3403 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 04:16:13,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 957 states. [2024-11-28 04:16:13,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 957 to 949. [2024-11-28 04:16:13,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 949 states, 731 states have (on average 1.6073871409028728) internal successors, (1175), 761 states have internal predecessors, (1175), 178 states have call successors, (178), 43 states have call predecessors, (178), 39 states have return successors, (179), 169 states have call predecessors, (179), 174 states have call successors, (179) [2024-11-28 04:16:13,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 949 states to 949 states and 1532 transitions. [2024-11-28 04:16:13,665 INFO L78 Accepts]: Start accepts. Automaton has 949 states and 1532 transitions. Word has length 93 [2024-11-28 04:16:13,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:16:13,665 INFO L471 AbstractCegarLoop]: Abstraction has 949 states and 1532 transitions. [2024-11-28 04:16:13,666 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 4 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-28 04:16:13,666 INFO L276 IsEmpty]: Start isEmpty. Operand 949 states and 1532 transitions. [2024-11-28 04:16:13,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-28 04:16:13,668 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:16:13,669 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:16:13,669 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 04:16:13,670 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:16:13,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:16:13,671 INFO L85 PathProgramCache]: Analyzing trace with hash -190258223, now seen corresponding path program 1 times [2024-11-28 04:16:13,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:16:13,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63651542] [2024-11-28 04:16:13,671 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:16:13,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:16:13,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:16:14,091 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 04:16:14,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:16:14,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63651542] [2024-11-28 04:16:14,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63651542] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:16:14,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899301230] [2024-11-28 04:16:14,092 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:16:14,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:16:14,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fbe6e3d-330f-428b-b973-da481ee556ad/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:16:14,096 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fbe6e3d-330f-428b-b973-da481ee556ad/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:16:14,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fbe6e3d-330f-428b-b973-da481ee556ad/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 04:16:14,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:16:14,603 INFO L256 TraceCheckSpWp]: Trace formula consists of 1560 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 04:16:14,612 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:16:14,770 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:16:14,774 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:16:14,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899301230] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:16:14,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:16:14,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2024-11-28 04:16:14,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695512608] [2024-11-28 04:16:14,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:16:14,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:16:14,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:16:14,776 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:16:14,776 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:16:14,777 INFO L87 Difference]: Start difference. First operand 949 states and 1532 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-28 04:16:14,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:16:14,960 INFO L93 Difference]: Finished difference Result 2727 states and 4472 transitions. [2024-11-28 04:16:14,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:16:14,960 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 98 [2024-11-28 04:16:14,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:16:14,980 INFO L225 Difference]: With dead ends: 2727 [2024-11-28 04:16:14,980 INFO L226 Difference]: Without dead ends: 1796 [2024-11-28 04:16:14,988 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:16:14,990 INFO L435 NwaCegarLoop]: 909 mSDtfsCounter, 779 mSDsluCounter, 740 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 779 SdHoareTripleChecker+Valid, 1649 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:16:14,991 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [779 Valid, 1649 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:16:14,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1796 states. [2024-11-28 04:16:15,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1796 to 1735. [2024-11-28 04:16:15,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1735 states, 1344 states have (on average 1.6287202380952381) internal successors, (2189), 1404 states have internal predecessors, (2189), 317 states have call successors, (317), 76 states have call predecessors, (317), 73 states have return successors, (332), 304 states have call predecessors, (332), 313 states have call successors, (332) [2024-11-28 04:16:15,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1735 states to 1735 states and 2838 transitions. [2024-11-28 04:16:15,140 INFO L78 Accepts]: Start accepts. Automaton has 1735 states and 2838 transitions. Word has length 98 [2024-11-28 04:16:15,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:16:15,141 INFO L471 AbstractCegarLoop]: Abstraction has 1735 states and 2838 transitions. [2024-11-28 04:16:15,142 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-28 04:16:15,142 INFO L276 IsEmpty]: Start isEmpty. Operand 1735 states and 2838 transitions. [2024-11-28 04:16:15,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-28 04:16:15,147 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:16:15,147 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:16:15,161 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fbe6e3d-330f-428b-b973-da481ee556ad/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 04:16:15,351 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fbe6e3d-330f-428b-b973-da481ee556ad/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-28 04:16:15,352 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:16:15,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:16:15,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1404344171, now seen corresponding path program 1 times [2024-11-28 04:16:15,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:16:15,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452656432] [2024-11-28 04:16:15,353 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:16:15,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:16:15,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:16:15,749 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 04:16:15,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:16:15,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452656432] [2024-11-28 04:16:15,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452656432] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:16:15,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965589714] [2024-11-28 04:16:15,750 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:16:15,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:16:15,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fbe6e3d-330f-428b-b973-da481ee556ad/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:16:15,753 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fbe6e3d-330f-428b-b973-da481ee556ad/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:16:15,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fbe6e3d-330f-428b-b973-da481ee556ad/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 04:16:16,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:16:16,263 INFO L256 TraceCheckSpWp]: Trace formula consists of 1561 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 04:16:16,269 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:16:16,408 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:16:16,408 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:16:16,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965589714] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:16:16,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:16:16,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2024-11-28 04:16:16,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324551683] [2024-11-28 04:16:16,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:16:16,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:16:16,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:16:16,409 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:16:16,410 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:16:16,410 INFO L87 Difference]: Start difference. First operand 1735 states and 2838 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-28 04:16:16,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:16:16,644 INFO L93 Difference]: Finished difference Result 3893 states and 6406 transitions. [2024-11-28 04:16:16,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:16:16,645 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 99 [2024-11-28 04:16:16,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:16:16,668 INFO L225 Difference]: With dead ends: 3893 [2024-11-28 04:16:16,669 INFO L226 Difference]: Without dead ends: 2176 [2024-11-28 04:16:16,682 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:16:16,683 INFO L435 NwaCegarLoop]: 843 mSDtfsCounter, 779 mSDsluCounter, 736 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 779 SdHoareTripleChecker+Valid, 1579 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:16:16,683 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [779 Valid, 1579 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:16:16,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2176 states. [2024-11-28 04:16:16,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2176 to 2129. [2024-11-28 04:16:16,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2129 states, 1652 states have (on average 1.6422518159806296) internal successors, (2713), 1727 states have internal predecessors, (2713), 387 states have call successors, (387), 91 states have call predecessors, (387), 89 states have return successors, (406), 373 states have call predecessors, (406), 383 states have call successors, (406) [2024-11-28 04:16:16,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2129 states to 2129 states and 3506 transitions. [2024-11-28 04:16:16,863 INFO L78 Accepts]: Start accepts. Automaton has 2129 states and 3506 transitions. Word has length 99 [2024-11-28 04:16:16,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:16:16,864 INFO L471 AbstractCegarLoop]: Abstraction has 2129 states and 3506 transitions. [2024-11-28 04:16:16,864 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-28 04:16:16,864 INFO L276 IsEmpty]: Start isEmpty. Operand 2129 states and 3506 transitions. [2024-11-28 04:16:16,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-28 04:16:16,869 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:16:16,869 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:16:16,882 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fbe6e3d-330f-428b-b973-da481ee556ad/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 04:16:17,070 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fbe6e3d-330f-428b-b973-da481ee556ad/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-28 04:16:17,071 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:16:17,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:16:17,072 INFO L85 PathProgramCache]: Analyzing trace with hash 739383863, now seen corresponding path program 1 times [2024-11-28 04:16:17,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:16:17,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129554376] [2024-11-28 04:16:17,072 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:16:17,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:16:17,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:16:17,348 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 04:16:17,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:16:17,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129554376] [2024-11-28 04:16:17,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129554376] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:16:17,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:16:17,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:16:17,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110855396] [2024-11-28 04:16:17,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:16:17,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:16:17,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:16:17,351 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:16:17,351 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:16:17,351 INFO L87 Difference]: Start difference. First operand 2129 states and 3506 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-28 04:16:18,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:16:18,515 INFO L93 Difference]: Finished difference Result 6303 states and 10568 transitions. [2024-11-28 04:16:18,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:16:18,516 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) Word has length 101 [2024-11-28 04:16:18,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:16:18,560 INFO L225 Difference]: With dead ends: 6303 [2024-11-28 04:16:18,560 INFO L226 Difference]: Without dead ends: 4192 [2024-11-28 04:16:18,579 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:16:18,581 INFO L435 NwaCegarLoop]: 941 mSDtfsCounter, 837 mSDsluCounter, 3394 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 848 SdHoareTripleChecker+Valid, 4335 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 04:16:18,581 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [848 Valid, 4335 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 04:16:18,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4192 states. [2024-11-28 04:16:18,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4192 to 4139. [2024-11-28 04:16:18,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4139 states, 3219 states have (on average 1.6424355389872631) internal successors, (5287), 3364 states have internal predecessors, (5287), 744 states have call successors, (744), 176 states have call predecessors, (744), 175 states have return successors, (912), 724 states have call predecessors, (912), 738 states have call successors, (912) [2024-11-28 04:16:18,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4139 states to 4139 states and 6943 transitions. [2024-11-28 04:16:18,982 INFO L78 Accepts]: Start accepts. Automaton has 4139 states and 6943 transitions. Word has length 101 [2024-11-28 04:16:18,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:16:18,983 INFO L471 AbstractCegarLoop]: Abstraction has 4139 states and 6943 transitions. [2024-11-28 04:16:18,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-28 04:16:18,983 INFO L276 IsEmpty]: Start isEmpty. Operand 4139 states and 6943 transitions. [2024-11-28 04:16:18,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-28 04:16:18,988 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:16:18,989 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:16:18,989 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 04:16:18,989 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:16:18,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:16:18,990 INFO L85 PathProgramCache]: Analyzing trace with hash -898514139, now seen corresponding path program 1 times [2024-11-28 04:16:18,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:16:18,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002736664] [2024-11-28 04:16:18,990 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:16:18,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:16:19,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:16:19,154 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 04:16:19,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:16:19,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002736664] [2024-11-28 04:16:19,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002736664] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:16:19,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:16:19,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:16:19,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406810845] [2024-11-28 04:16:19,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:16:19,157 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:16:19,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:16:19,158 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:16:19,158 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:16:19,158 INFO L87 Difference]: Start difference. First operand 4139 states and 6943 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-28 04:16:19,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:16:19,688 INFO L93 Difference]: Finished difference Result 8284 states and 14019 transitions. [2024-11-28 04:16:19,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:16:19,689 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 102 [2024-11-28 04:16:19,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:16:19,737 INFO L225 Difference]: With dead ends: 8284 [2024-11-28 04:16:19,737 INFO L226 Difference]: Without dead ends: 4163 [2024-11-28 04:16:19,789 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:16:19,790 INFO L435 NwaCegarLoop]: 825 mSDtfsCounter, 12 mSDsluCounter, 1625 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2450 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:16:19,791 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2450 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:16:19,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4163 states. [2024-11-28 04:16:20,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4163 to 4147. [2024-11-28 04:16:20,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4147 states, 3225 states have (on average 1.6406201550387598) internal successors, (5291), 3370 states have internal predecessors, (5291), 744 states have call successors, (744), 180 states have call predecessors, (744), 177 states have return successors, (900), 722 states have call predecessors, (900), 738 states have call successors, (900) [2024-11-28 04:16:20,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4147 states to 4147 states and 6935 transitions. [2024-11-28 04:16:20,272 INFO L78 Accepts]: Start accepts. Automaton has 4147 states and 6935 transitions. Word has length 102 [2024-11-28 04:16:20,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:16:20,272 INFO L471 AbstractCegarLoop]: Abstraction has 4147 states and 6935 transitions. [2024-11-28 04:16:20,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-28 04:16:20,273 INFO L276 IsEmpty]: Start isEmpty. Operand 4147 states and 6935 transitions. [2024-11-28 04:16:20,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-28 04:16:20,278 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:16:20,278 INFO L218 NwaCegarLoop]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:16:20,279 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-28 04:16:20,279 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:16:20,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:16:20,279 INFO L85 PathProgramCache]: Analyzing trace with hash -693129795, now seen corresponding path program 1 times [2024-11-28 04:16:20,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:16:20,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057934988] [2024-11-28 04:16:20,280 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:16:20,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:16:20,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:16:20,563 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 04:16:20,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:16:20,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057934988] [2024-11-28 04:16:20,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057934988] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:16:20,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:16:20,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:16:20,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713870201] [2024-11-28 04:16:20,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:16:20,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:16:20,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:16:20,566 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:16:20,566 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:16:20,566 INFO L87 Difference]: Start difference. First operand 4147 states and 6935 transitions. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-28 04:16:21,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:16:21,844 INFO L93 Difference]: Finished difference Result 12401 states and 21203 transitions. [2024-11-28 04:16:21,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:16:21,845 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) Word has length 110 [2024-11-28 04:16:21,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:16:21,945 INFO L225 Difference]: With dead ends: 12401 [2024-11-28 04:16:21,946 INFO L226 Difference]: Without dead ends: 8272 [2024-11-28 04:16:21,982 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:16:21,982 INFO L435 NwaCegarLoop]: 947 mSDtfsCounter, 830 mSDsluCounter, 3418 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 838 SdHoareTripleChecker+Valid, 4365 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 04:16:21,983 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [838 Valid, 4365 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 04:16:21,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8272 states. [2024-11-28 04:16:22,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8272 to 8203. [2024-11-28 04:16:22,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8203 states, 6386 states have (on average 1.6388975884747885) internal successors, (10466), 6671 states have internal predecessors, (10466), 1463 states have call successors, (1463), 354 states have call predecessors, (1463), 353 states have return successors, (2083), 1429 states have call predecessors, (2083), 1453 states have call successors, (2083) [2024-11-28 04:16:22,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8203 states to 8203 states and 14012 transitions. [2024-11-28 04:16:22,687 INFO L78 Accepts]: Start accepts. Automaton has 8203 states and 14012 transitions. Word has length 110 [2024-11-28 04:16:22,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:16:22,689 INFO L471 AbstractCegarLoop]: Abstraction has 8203 states and 14012 transitions. [2024-11-28 04:16:22,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-28 04:16:22,691 INFO L276 IsEmpty]: Start isEmpty. Operand 8203 states and 14012 transitions. [2024-11-28 04:16:22,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-28 04:16:22,695 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:16:22,696 INFO L218 NwaCegarLoop]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:16:22,696 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-28 04:16:22,696 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:16:22,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:16:22,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1754745111, now seen corresponding path program 1 times [2024-11-28 04:16:22,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:16:22,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606021161] [2024-11-28 04:16:22,698 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:16:22,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:16:22,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:16:22,839 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:16:22,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:16:22,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606021161] [2024-11-28 04:16:22,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606021161] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:16:22,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:16:22,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:16:22,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783435819] [2024-11-28 04:16:22,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:16:22,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:16:22,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:16:22,841 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:16:22,842 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:16:22,842 INFO L87 Difference]: Start difference. First operand 8203 states and 14012 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-28 04:16:23,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:16:23,551 INFO L93 Difference]: Finished difference Result 16460 states and 28489 transitions. [2024-11-28 04:16:23,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:16:23,552 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 111 [2024-11-28 04:16:23,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:16:23,661 INFO L225 Difference]: With dead ends: 16460 [2024-11-28 04:16:23,661 INFO L226 Difference]: Without dead ends: 8275 [2024-11-28 04:16:23,859 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:16:23,861 INFO L435 NwaCegarLoop]: 822 mSDtfsCounter, 12 mSDsluCounter, 1622 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2444 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:16:23,862 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2444 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:16:23,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8275 states. [2024-11-28 04:16:24,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8275 to 8243. [2024-11-28 04:16:24,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8243 states, 6422 states have (on average 1.6359389598255996) internal successors, (10506), 6699 states have internal predecessors, (10506), 1463 states have call successors, (1463), 370 states have call predecessors, (1463), 357 states have return successors, (2065), 1425 states have call predecessors, (2065), 1453 states have call successors, (2065) [2024-11-28 04:16:24,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8243 states to 8243 states and 14034 transitions. [2024-11-28 04:16:24,399 INFO L78 Accepts]: Start accepts. Automaton has 8243 states and 14034 transitions. Word has length 111 [2024-11-28 04:16:24,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:16:24,399 INFO L471 AbstractCegarLoop]: Abstraction has 8243 states and 14034 transitions. [2024-11-28 04:16:24,399 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-28 04:16:24,400 INFO L276 IsEmpty]: Start isEmpty. Operand 8243 states and 14034 transitions. [2024-11-28 04:16:24,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-28 04:16:24,406 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:16:24,406 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:16:24,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-28 04:16:24,407 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:16:24,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:16:24,407 INFO L85 PathProgramCache]: Analyzing trace with hash -2127338777, now seen corresponding path program 1 times [2024-11-28 04:16:24,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:16:24,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746880603] [2024-11-28 04:16:24,408 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:16:24,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:16:24,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:16:24,689 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-28 04:16:24,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:16:24,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746880603] [2024-11-28 04:16:24,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746880603] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:16:24,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:16:24,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:16:24,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503429003] [2024-11-28 04:16:24,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:16:24,690 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:16:24,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:16:24,691 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:16:24,691 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:16:24,691 INFO L87 Difference]: Start difference. First operand 8243 states and 14034 transitions. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-28 04:16:26,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:16:26,659 INFO L93 Difference]: Finished difference Result 24757 states and 43513 transitions. [2024-11-28 04:16:26,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:16:26,660 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) Word has length 120 [2024-11-28 04:16:26,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:16:26,846 INFO L225 Difference]: With dead ends: 24757 [2024-11-28 04:16:26,847 INFO L226 Difference]: Without dead ends: 16532 [2024-11-28 04:16:26,939 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:16:26,940 INFO L435 NwaCegarLoop]: 945 mSDtfsCounter, 826 mSDsluCounter, 3420 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 832 SdHoareTripleChecker+Valid, 4365 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 04:16:26,940 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [832 Valid, 4365 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 04:16:26,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16532 states. [2024-11-28 04:16:27,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16532 to 16431. [2024-11-28 04:16:27,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16431 states, 12807 states have (on average 1.6332474428047161) internal successors, (20917), 13356 states have internal predecessors, (20917), 2906 states have call successors, (2906), 734 states have call predecessors, (2906), 717 states have return successors, (5008), 2844 states have call predecessors, (5008), 2888 states have call successors, (5008) [2024-11-28 04:16:28,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16431 states to 16431 states and 28831 transitions. [2024-11-28 04:16:28,177 INFO L78 Accepts]: Start accepts. Automaton has 16431 states and 28831 transitions. Word has length 120 [2024-11-28 04:16:28,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:16:28,178 INFO L471 AbstractCegarLoop]: Abstraction has 16431 states and 28831 transitions. [2024-11-28 04:16:28,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-28 04:16:28,179 INFO L276 IsEmpty]: Start isEmpty. Operand 16431 states and 28831 transitions. [2024-11-28 04:16:28,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-28 04:16:28,185 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:16:28,185 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:16:28,186 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-28 04:16:28,186 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:16:28,186 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:16:28,186 INFO L85 PathProgramCache]: Analyzing trace with hash 60482021, now seen corresponding path program 1 times [2024-11-28 04:16:28,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:16:28,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205124737] [2024-11-28 04:16:28,187 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:16:28,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:16:28,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:16:28,337 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-28 04:16:28,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:16:28,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205124737] [2024-11-28 04:16:28,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205124737] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:16:28,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:16:28,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:16:28,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968610702] [2024-11-28 04:16:28,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:16:28,339 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:16:28,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:16:28,340 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:16:28,340 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:16:28,340 INFO L87 Difference]: Start difference. First operand 16431 states and 28831 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-28 04:16:29,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:16:29,725 INFO L93 Difference]: Finished difference Result 32988 states and 59203 transitions. [2024-11-28 04:16:29,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:16:29,726 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 121 [2024-11-28 04:16:29,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:16:29,903 INFO L225 Difference]: With dead ends: 32988 [2024-11-28 04:16:29,903 INFO L226 Difference]: Without dead ends: 16575 [2024-11-28 04:16:30,298 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:16:30,299 INFO L435 NwaCegarLoop]: 823 mSDtfsCounter, 11 mSDsluCounter, 1624 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2447 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:16:30,299 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2447 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:16:30,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16575 states. [2024-11-28 04:16:31,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16575 to 16511. [2024-11-28 04:16:31,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16511 states, 12879 states have (on average 1.6303284416491963) internal successors, (20997), 13428 states have internal predecessors, (20997), 2906 states have call successors, (2906), 750 states have call predecessors, (2906), 725 states have return successors, (4984), 2836 states have call predecessors, (4984), 2888 states have call successors, (4984) [2024-11-28 04:16:31,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16511 states to 16511 states and 28887 transitions. [2024-11-28 04:16:31,677 INFO L78 Accepts]: Start accepts. Automaton has 16511 states and 28887 transitions. Word has length 121 [2024-11-28 04:16:31,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:16:31,678 INFO L471 AbstractCegarLoop]: Abstraction has 16511 states and 28887 transitions. [2024-11-28 04:16:31,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-28 04:16:31,678 INFO L276 IsEmpty]: Start isEmpty. Operand 16511 states and 28887 transitions. [2024-11-28 04:16:31,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-28 04:16:31,689 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:16:31,690 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:16:31,690 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-28 04:16:31,690 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:16:31,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:16:31,693 INFO L85 PathProgramCache]: Analyzing trace with hash 372089901, now seen corresponding path program 1 times [2024-11-28 04:16:31,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:16:31,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619548928] [2024-11-28 04:16:31,694 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:16:31,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:16:31,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:16:32,075 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-28 04:16:32,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:16:32,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619548928] [2024-11-28 04:16:32,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619548928] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:16:32,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:16:32,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:16:32,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765056336] [2024-11-28 04:16:32,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:16:32,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:16:32,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:16:32,080 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:16:32,080 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:16:32,080 INFO L87 Difference]: Start difference. First operand 16511 states and 28887 transitions. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-28 04:16:35,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:16:35,521 INFO L93 Difference]: Finished difference Result 49677 states and 91377 transitions. [2024-11-28 04:16:35,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:16:35,522 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) Word has length 131 [2024-11-28 04:16:35,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:16:35,869 INFO L225 Difference]: With dead ends: 49677 [2024-11-28 04:16:35,869 INFO L226 Difference]: Without dead ends: 33184 [2024-11-28 04:16:36,073 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:16:36,074 INFO L435 NwaCegarLoop]: 901 mSDtfsCounter, 823 mSDsluCounter, 3299 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 827 SdHoareTripleChecker+Valid, 4200 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 04:16:36,074 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [827 Valid, 4200 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 04:16:36,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33184 states. [2024-11-28 04:16:38,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33184 to 33019. [2024-11-28 04:16:38,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33019 states, 25760 states have (on average 1.6271739130434784) internal successors, (41916), 26853 states have internal predecessors, (41916), 5797 states have call successors, (5797), 1494 states have call predecessors, (5797), 1461 states have return successors, (12943), 5679 states have call predecessors, (12943), 5763 states have call successors, (12943) [2024-11-28 04:16:39,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33019 states to 33019 states and 60656 transitions. [2024-11-28 04:16:39,344 INFO L78 Accepts]: Start accepts. Automaton has 33019 states and 60656 transitions. Word has length 131 [2024-11-28 04:16:39,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:16:39,345 INFO L471 AbstractCegarLoop]: Abstraction has 33019 states and 60656 transitions. [2024-11-28 04:16:39,345 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-28 04:16:39,345 INFO L276 IsEmpty]: Start isEmpty. Operand 33019 states and 60656 transitions. [2024-11-28 04:16:39,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-11-28 04:16:39,356 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:16:39,356 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:16:39,357 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-28 04:16:39,357 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:16:39,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:16:39,358 INFO L85 PathProgramCache]: Analyzing trace with hash 49902103, now seen corresponding path program 1 times [2024-11-28 04:16:39,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:16:39,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637450706] [2024-11-28 04:16:39,358 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:16:39,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:16:39,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:16:39,551 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-28 04:16:39,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:16:39,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637450706] [2024-11-28 04:16:39,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637450706] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:16:39,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:16:39,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:16:39,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356012915] [2024-11-28 04:16:39,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:16:39,554 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:16:39,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:16:39,555 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:16:39,556 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:16:39,557 INFO L87 Difference]: Start difference. First operand 33019 states and 60656 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-28 04:16:42,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:16:42,507 INFO L93 Difference]: Finished difference Result 66282 states and 126631 transitions. [2024-11-28 04:16:42,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:16:42,508 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 132 [2024-11-28 04:16:42,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:16:42,798 INFO L225 Difference]: With dead ends: 66282 [2024-11-28 04:16:42,798 INFO L226 Difference]: Without dead ends: 33233 [2024-11-28 04:16:43,299 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:16:43,299 INFO L435 NwaCegarLoop]: 822 mSDtfsCounter, 9 mSDsluCounter, 1622 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 2444 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:16:43,300 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 2444 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 04:16:43,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33233 states. [2024-11-28 04:16:45,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33233 to 33107. [2024-11-28 04:16:45,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33107 states, 25838 states have (on average 1.623616378976701) internal successors, (41951), 26944 states have internal predecessors, (41951), 5792 states have call successors, (5792), 1509 states have call predecessors, (5792), 1476 states have return successors, (12829), 5660 states have call predecessors, (12829), 5758 states have call successors, (12829) [2024-11-28 04:16:46,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33107 states to 33107 states and 60572 transitions. [2024-11-28 04:16:46,283 INFO L78 Accepts]: Start accepts. Automaton has 33107 states and 60572 transitions. Word has length 132 [2024-11-28 04:16:46,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:16:46,284 INFO L471 AbstractCegarLoop]: Abstraction has 33107 states and 60572 transitions. [2024-11-28 04:16:46,284 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-28 04:16:46,284 INFO L276 IsEmpty]: Start isEmpty. Operand 33107 states and 60572 transitions. [2024-11-28 04:16:46,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-11-28 04:16:46,301 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:16:46,302 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:16:46,302 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-28 04:16:46,302 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:16:46,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:16:46,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1120854437, now seen corresponding path program 1 times [2024-11-28 04:16:46,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:16:46,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041719385] [2024-11-28 04:16:46,303 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:16:46,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:16:46,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:16:46,901 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 20 proven. 4 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-28 04:16:46,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:16:46,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041719385] [2024-11-28 04:16:46,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041719385] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:16:46,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63661269] [2024-11-28 04:16:46,902 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:16:46,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:16:46,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fbe6e3d-330f-428b-b973-da481ee556ad/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:16:46,905 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fbe6e3d-330f-428b-b973-da481ee556ad/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:16:46,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fbe6e3d-330f-428b-b973-da481ee556ad/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 04:16:47,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:16:47,560 INFO L256 TraceCheckSpWp]: Trace formula consists of 1908 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:16:47,569 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:16:47,600 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-28 04:16:47,600 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:16:47,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [63661269] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:16:47,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:16:47,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 11 [2024-11-28 04:16:47,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137080278] [2024-11-28 04:16:47,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:16:47,603 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:16:47,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:16:47,604 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:16:47,605 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-28 04:16:47,606 INFO L87 Difference]: Start difference. First operand 33107 states and 60572 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-28 04:16:50,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:16:50,575 INFO L93 Difference]: Finished difference Result 73961 states and 140062 transitions. [2024-11-28 04:16:50,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:16:50,576 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 148 [2024-11-28 04:16:50,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:16:51,160 INFO L225 Difference]: With dead ends: 73961 [2024-11-28 04:16:51,161 INFO L226 Difference]: Without dead ends: 53462 [2024-11-28 04:16:51,522 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-28 04:16:51,524 INFO L435 NwaCegarLoop]: 869 mSDtfsCounter, 827 mSDsluCounter, 818 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 827 SdHoareTripleChecker+Valid, 1687 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:16:51,524 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [827 Valid, 1687 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:16:51,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53462 states. [2024-11-28 04:16:54,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53462 to 53218. [2024-11-28 04:16:54,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53218 states, 41647 states have (on average 1.6379811270919875) internal successors, (68217), 43363 states have internal predecessors, (68217), 9182 states have call successors, (9182), 2373 states have call predecessors, (9182), 2388 states have return successors, (22155), 9112 states have call predecessors, (22155), 9132 states have call successors, (22155) [2024-11-28 04:16:55,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53218 states to 53218 states and 99554 transitions. [2024-11-28 04:16:55,327 INFO L78 Accepts]: Start accepts. Automaton has 53218 states and 99554 transitions. Word has length 148 [2024-11-28 04:16:55,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:16:55,328 INFO L471 AbstractCegarLoop]: Abstraction has 53218 states and 99554 transitions. [2024-11-28 04:16:55,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-28 04:16:55,328 INFO L276 IsEmpty]: Start isEmpty. Operand 53218 states and 99554 transitions. [2024-11-28 04:16:55,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-11-28 04:16:55,348 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:16:55,349 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:16:55,365 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fbe6e3d-330f-428b-b973-da481ee556ad/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 04:16:55,552 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fbe6e3d-330f-428b-b973-da481ee556ad/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-28 04:16:55,553 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:16:55,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:16:55,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1538251043, now seen corresponding path program 1 times [2024-11-28 04:16:55,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:16:55,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353967526] [2024-11-28 04:16:55,553 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:16:55,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:16:55,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:16:56,053 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 20 proven. 4 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-28 04:16:56,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:16:56,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353967526] [2024-11-28 04:16:56,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353967526] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:16:56,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76120709] [2024-11-28 04:16:56,053 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:16:56,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:16:56,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fbe6e3d-330f-428b-b973-da481ee556ad/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:16:56,056 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fbe6e3d-330f-428b-b973-da481ee556ad/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:16:56,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fbe6e3d-330f-428b-b973-da481ee556ad/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 04:16:56,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:16:56,594 INFO L256 TraceCheckSpWp]: Trace formula consists of 1907 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 04:16:56,601 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:16:56,841 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 04:16:56,841 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:16:56,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [76120709] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:16:56,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:16:56,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2024-11-28 04:16:56,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959441505] [2024-11-28 04:16:56,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:16:56,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 04:16:56,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:16:56,844 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 04:16:56,845 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2024-11-28 04:16:56,845 INFO L87 Difference]: Start difference. First operand 53218 states and 99554 transitions. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 5 states have call successors, (19), 4 states have call predecessors, (19), 5 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2024-11-28 04:17:08,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:17:08,486 INFO L93 Difference]: Finished difference Result 140877 states and 287535 transitions. [2024-11-28 04:17:08,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 04:17:08,490 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 5 states have call successors, (19), 4 states have call predecessors, (19), 5 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) Word has length 148 [2024-11-28 04:17:08,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:17:09,882 INFO L225 Difference]: With dead ends: 140877 [2024-11-28 04:17:09,883 INFO L226 Difference]: Without dead ends: 83981 [2024-11-28 04:17:10,648 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=92, Invalid=558, Unknown=0, NotChecked=0, Total=650 [2024-11-28 04:17:10,650 INFO L435 NwaCegarLoop]: 424 mSDtfsCounter, 2221 mSDsluCounter, 1786 mSDsCounter, 0 mSdLazyCounter, 4560 mSolverCounterSat, 720 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2314 SdHoareTripleChecker+Valid, 2210 SdHoareTripleChecker+Invalid, 5280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 720 IncrementalHoareTripleChecker+Valid, 4560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2024-11-28 04:17:10,650 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2314 Valid, 2210 Invalid, 5280 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [720 Valid, 4560 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2024-11-28 04:17:10,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83981 states. [2024-11-28 04:17:15,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83981 to 75121. [2024-11-28 04:17:15,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75121 states, 58784 states have (on average 1.6350537561241154) internal successors, (96115), 61174 states have internal predecessors, (96115), 12892 states have call successors, (12892), 3205 states have call predecessors, (12892), 3444 states have return successors, (35893), 12868 states have call predecessors, (35893), 12826 states have call successors, (35893) [2024-11-28 04:17:16,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75121 states to 75121 states and 144900 transitions. [2024-11-28 04:17:17,037 INFO L78 Accepts]: Start accepts. Automaton has 75121 states and 144900 transitions. Word has length 148 [2024-11-28 04:17:17,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:17:17,038 INFO L471 AbstractCegarLoop]: Abstraction has 75121 states and 144900 transitions. [2024-11-28 04:17:17,038 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 5 states have call successors, (19), 4 states have call predecessors, (19), 5 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2024-11-28 04:17:17,038 INFO L276 IsEmpty]: Start isEmpty. Operand 75121 states and 144900 transitions. [2024-11-28 04:17:17,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2024-11-28 04:17:17,050 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:17:17,050 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:17:17,065 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fbe6e3d-330f-428b-b973-da481ee556ad/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 04:17:17,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fbe6e3d-330f-428b-b973-da481ee556ad/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:17:17,251 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:17:17,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:17:17,252 INFO L85 PathProgramCache]: Analyzing trace with hash 178455349, now seen corresponding path program 1 times [2024-11-28 04:17:17,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:17:17,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264270397] [2024-11-28 04:17:17,252 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:17:17,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:17:17,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:17:17,753 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 19 proven. 3 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-28 04:17:17,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:17:17,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264270397] [2024-11-28 04:17:17,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264270397] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:17:17,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794298693] [2024-11-28 04:17:17,754 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:17:17,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:17:17,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fbe6e3d-330f-428b-b973-da481ee556ad/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:17:17,756 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fbe6e3d-330f-428b-b973-da481ee556ad/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:17:17,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fbe6e3d-330f-428b-b973-da481ee556ad/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 04:17:18,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:17:18,275 INFO L256 TraceCheckSpWp]: Trace formula consists of 2016 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 04:17:18,284 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:17:18,540 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-28 04:17:18,541 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:17:18,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794298693] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:17:18,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:17:18,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13] total 18 [2024-11-28 04:17:18,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958398969] [2024-11-28 04:17:18,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:17:18,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:17:18,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:17:18,543 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:17:18,543 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2024-11-28 04:17:18,544 INFO L87 Difference]: Start difference. First operand 75121 states and 144900 transitions. Second operand has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 5 states have call successors, (24), 4 states have call predecessors, (24), 5 states have return successors, (22), 5 states have call predecessors, (22), 5 states have call successors, (22)