./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec3_product11.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_41c94d54-1e5b-440f-9961-2f3f0ae8a4d8/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41c94d54-1e5b-440f-9961-2f3f0ae8a4d8/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_41c94d54-1e5b-440f-9961-2f3f0ae8a4d8/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41c94d54-1e5b-440f-9961-2f3f0ae8a4d8/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product11.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41c94d54-1e5b-440f-9961-2f3f0ae8a4d8/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_41c94d54-1e5b-440f-9961-2f3f0ae8a4d8/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 79cd0e89b784c92aef5addf1ffd5f426704de99d9c0060c88cf4cdcbae792c3b --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:09:15,902 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:09:15,995 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41c94d54-1e5b-440f-9961-2f3f0ae8a4d8/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 02:09:16,001 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:09:16,001 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:09:16,034 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:09:16,034 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:09:16,034 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:09:16,038 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:09:16,038 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:09:16,039 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:09:16,039 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:09:16,040 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:09:16,040 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:09:16,040 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:09:16,040 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:09:16,040 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:09:16,040 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:09:16,040 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:09:16,040 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:09:16,040 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:09:16,040 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:09:16,040 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:09:16,040 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:09:16,041 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:09:16,041 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:09:16,041 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:09:16,041 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:09:16,041 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:09:16,041 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:09:16,041 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:09:16,041 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:09:16,041 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:09:16,041 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:09:16,041 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:09:16,041 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:09:16,041 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:09:16,042 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:09:16,042 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:09:16,042 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:09:16,042 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:09:16,042 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:09:16,042 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:09:16,042 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:09:16,042 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:09:16,042 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:09:16,043 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:09:16,044 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:09:16,044 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_41c94d54-1e5b-440f-9961-2f3f0ae8a4d8/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 -> 79cd0e89b784c92aef5addf1ffd5f426704de99d9c0060c88cf4cdcbae792c3b [2024-11-28 02:09:16,337 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:09:16,350 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:09:16,353 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:09:16,355 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:09:16,355 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:09:16,356 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41c94d54-1e5b-440f-9961-2f3f0ae8a4d8/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/product-lines/elevator_spec3_product11.cil.c [2024-11-28 02:09:19,432 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41c94d54-1e5b-440f-9961-2f3f0ae8a4d8/bin/uautomizer-verify-aQ6SnzHsRB/data/d0ece1775/70e9542fac334dcdb864e23fc0ad293d/FLAG2df6cc2cf [2024-11-28 02:09:19,808 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:09:19,813 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41c94d54-1e5b-440f-9961-2f3f0ae8a4d8/sv-benchmarks/c/product-lines/elevator_spec3_product11.cil.c [2024-11-28 02:09:19,844 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41c94d54-1e5b-440f-9961-2f3f0ae8a4d8/bin/uautomizer-verify-aQ6SnzHsRB/data/d0ece1775/70e9542fac334dcdb864e23fc0ad293d/FLAG2df6cc2cf [2024-11-28 02:09:19,861 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41c94d54-1e5b-440f-9961-2f3f0ae8a4d8/bin/uautomizer-verify-aQ6SnzHsRB/data/d0ece1775/70e9542fac334dcdb864e23fc0ad293d [2024-11-28 02:09:19,863 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:09:19,864 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:09:19,866 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:09:19,866 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:09:19,872 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:09:19,873 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:09:19" (1/1) ... [2024-11-28 02:09:19,874 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b121789 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:09:19, skipping insertion in model container [2024-11-28 02:09:19,874 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:09:19" (1/1) ... [2024-11-28 02:09:19,945 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:09:20,095 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_41c94d54-1e5b-440f-9961-2f3f0ae8a4d8/sv-benchmarks/c/product-lines/elevator_spec3_product11.cil.c[1545,1558] [2024-11-28 02:09:20,510 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:09:20,522 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:09:20,531 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [48] [2024-11-28 02:09:20,533 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [57] [2024-11-28 02:09:20,533 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [423] [2024-11-28 02:09:20,533 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [523] [2024-11-28 02:09:20,533 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification3_spec.i","") [643] [2024-11-28 02:09:20,533 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [832] [2024-11-28 02:09:20,534 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [1185] [2024-11-28 02:09:20,534 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1200] [2024-11-28 02:09:20,534 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [2726] [2024-11-28 02:09:20,534 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [3387] [2024-11-28 02:09:20,538 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_41c94d54-1e5b-440f-9961-2f3f0ae8a4d8/sv-benchmarks/c/product-lines/elevator_spec3_product11.cil.c[1545,1558] [2024-11-28 02:09:20,697 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:09:20,738 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:09:20,738 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:09:20 WrapperNode [2024-11-28 02:09:20,740 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:09:20,741 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:09:20,741 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:09:20,741 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:09:20,750 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:09:20" (1/1) ... [2024-11-28 02:09:20,771 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:09:20" (1/1) ... [2024-11-28 02:09:20,818 INFO L138 Inliner]: procedures = 91, calls = 344, calls flagged for inlining = 23, calls inlined = 20, statements flattened = 1099 [2024-11-28 02:09:20,819 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:09:20,819 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:09:20,820 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:09:20,820 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:09:20,833 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:09:20" (1/1) ... [2024-11-28 02:09:20,833 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:09:20" (1/1) ... [2024-11-28 02:09:20,839 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:09:20" (1/1) ... [2024-11-28 02:09:20,872 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. 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 02:09:20,873 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:09:20" (1/1) ... [2024-11-28 02:09:20,873 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:09:20" (1/1) ... [2024-11-28 02:09:20,894 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:09:20" (1/1) ... [2024-11-28 02:09:20,897 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:09:20" (1/1) ... [2024-11-28 02:09:20,909 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:09:20" (1/1) ... [2024-11-28 02:09:20,915 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:09:20" (1/1) ... [2024-11-28 02:09:20,951 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:09:20" (1/1) ... [2024-11-28 02:09:20,969 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:09:20,970 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:09:20,970 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:09:20,970 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:09:20,971 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:09:20" (1/1) ... [2024-11-28 02:09:20,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:09:21,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41c94d54-1e5b-440f-9961-2f3f0ae8a4d8/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:09:21,040 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41c94d54-1e5b-440f-9961-2f3f0ae8a4d8/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:09:21,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41c94d54-1e5b-440f-9961-2f3f0ae8a4d8/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:09:21,082 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:09:21,082 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2024-11-28 02:09:21,083 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2024-11-28 02:09:21,083 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-11-28 02:09:21,083 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-11-28 02:09:21,083 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2024-11-28 02:09:21,083 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2024-11-28 02:09:21,083 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-11-28 02:09:21,083 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-11-28 02:09:21,083 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2024-11-28 02:09:21,083 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2024-11-28 02:09:21,084 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-11-28 02:09:21,084 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-11-28 02:09:21,084 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-28 02:09:21,084 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-28 02:09:21,084 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-28 02:09:21,084 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-28 02:09:21,084 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-11-28 02:09:21,084 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-11-28 02:09:21,084 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-11-28 02:09:21,084 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-11-28 02:09:21,084 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-11-28 02:09:21,084 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-11-28 02:09:21,085 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-11-28 02:09:21,085 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-11-28 02:09:21,085 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2024-11-28 02:09:21,085 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2024-11-28 02:09:21,085 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2024-11-28 02:09:21,085 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2024-11-28 02:09:21,085 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-11-28 02:09:21,085 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-11-28 02:09:21,085 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2024-11-28 02:09:21,085 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2024-11-28 02:09:21,085 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2024-11-28 02:09:21,085 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2024-11-28 02:09:21,087 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-11-28 02:09:21,088 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-11-28 02:09:21,088 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-11-28 02:09:21,088 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-11-28 02:09:21,088 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-11-28 02:09:21,088 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-11-28 02:09:21,088 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-11-28 02:09:21,088 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-11-28 02:09:21,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:09:21,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 02:09:21,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 02:09:21,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-28 02:09:21,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-28 02:09:21,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-28 02:09:21,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-28 02:09:21,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-28 02:09:21,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-28 02:09:21,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-28 02:09:21,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-28 02:09:21,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-28 02:09:21,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-28 02:09:21,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-28 02:09:21,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-11-28 02:09:21,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-11-28 02:09:21,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-11-28 02:09:21,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-11-28 02:09:21,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2024-11-28 02:09:21,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2024-11-28 02:09:21,090 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2024-11-28 02:09:21,090 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2024-11-28 02:09:21,090 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-11-28 02:09:21,090 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-11-28 02:09:21,090 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-11-28 02:09:21,090 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-11-28 02:09:21,090 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-11-28 02:09:21,090 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-11-28 02:09:21,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:09:21,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:09:21,091 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-11-28 02:09:21,091 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-11-28 02:09:21,319 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:09:21,321 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:09:22,854 INFO L? ?]: Removed 451 outVars from TransFormulas that were not future-live. [2024-11-28 02:09:22,854 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:09:22,889 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:09:22,889 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 02:09:22,890 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:09:22 BoogieIcfgContainer [2024-11-28 02:09:22,890 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:09:22,892 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:09:22,892 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:09:22,900 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:09:22,900 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:09:19" (1/3) ... [2024-11-28 02:09:22,901 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ba9c0f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:09:22, skipping insertion in model container [2024-11-28 02:09:22,901 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:09:20" (2/3) ... [2024-11-28 02:09:22,901 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ba9c0f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:09:22, skipping insertion in model container [2024-11-28 02:09:22,901 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:09:22" (3/3) ... [2024-11-28 02:09:22,902 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product11.cil.c [2024-11-28 02:09:22,915 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:09:22,918 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec3_product11.cil.c that has 27 procedures, 582 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-28 02:09:23,016 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:09:23,029 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;@37f3c0b9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:09:23,029 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 02:09:23,035 INFO L276 IsEmpty]: Start isEmpty. Operand has 582 states, 448 states have (on average 1.6763392857142858) internal successors, (751), 466 states have internal predecessors, (751), 106 states have call successors, (106), 26 states have call predecessors, (106), 26 states have return successors, (106), 103 states have call predecessors, (106), 106 states have call successors, (106) [2024-11-28 02:09:23,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-28 02:09:23,056 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:09:23,057 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 02:09:23,057 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:09:23,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:09:23,062 INFO L85 PathProgramCache]: Analyzing trace with hash 7302120, now seen corresponding path program 1 times [2024-11-28 02:09:23,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:09:23,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25406648] [2024-11-28 02:09:23,070 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:09:23,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:09:23,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:09:24,030 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-28 02:09:24,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:09:24,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25406648] [2024-11-28 02:09:24,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25406648] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:09:24,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:09:24,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 02:09:24,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237016710] [2024-11-28 02:09:24,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:09:24,039 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:09:24,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:09:24,058 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:09:24,059 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:09:24,062 INFO L87 Difference]: Start difference. First operand has 582 states, 448 states have (on average 1.6763392857142858) internal successors, (751), 466 states have internal predecessors, (751), 106 states have call successors, (106), 26 states have call predecessors, (106), 26 states have return successors, (106), 103 states have call predecessors, (106), 106 states have call successors, (106) Second operand has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-28 02:09:24,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:09:24,376 INFO L93 Difference]: Finished difference Result 1161 states and 1938 transitions. [2024-11-28 02:09:24,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:09:24,379 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 113 [2024-11-28 02:09:24,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:09:24,396 INFO L225 Difference]: With dead ends: 1161 [2024-11-28 02:09:24,397 INFO L226 Difference]: Without dead ends: 587 [2024-11-28 02:09:24,424 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 02:09:24,430 INFO L435 NwaCegarLoop]: 945 mSDtfsCounter, 91 mSDsluCounter, 4640 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 5585 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 02:09:24,430 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 5585 Invalid, 77 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:09:24,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2024-11-28 02:09:24,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 585. [2024-11-28 02:09:24,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 451 states have (on average 1.6674057649667406) internal successors, (752), 469 states have internal predecessors, (752), 107 states have call successors, (107), 26 states have call predecessors, (107), 26 states have return successors, (106), 102 states have call predecessors, (106), 104 states have call successors, (106) [2024-11-28 02:09:24,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 965 transitions. [2024-11-28 02:09:24,566 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 965 transitions. Word has length 113 [2024-11-28 02:09:24,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:09:24,567 INFO L471 AbstractCegarLoop]: Abstraction has 585 states and 965 transitions. [2024-11-28 02:09:24,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-28 02:09:24,567 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 965 transitions. [2024-11-28 02:09:24,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-28 02:09:24,573 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:09:24,574 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 02:09:24,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 02:09:24,574 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:09:24,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:09:24,575 INFO L85 PathProgramCache]: Analyzing trace with hash 81295280, now seen corresponding path program 1 times [2024-11-28 02:09:24,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:09:24,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489850177] [2024-11-28 02:09:24,575 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:09:24,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:09:24,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:09:25,063 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-28 02:09:25,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:09:25,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489850177] [2024-11-28 02:09:25,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489850177] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:09:25,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:09:25,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 02:09:25,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483235115] [2024-11-28 02:09:25,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:09:25,065 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:09:25,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:09:25,065 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:09:25,066 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:09:25,066 INFO L87 Difference]: Start difference. First operand 585 states and 965 transitions. Second operand has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-28 02:09:25,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:09:25,231 INFO L93 Difference]: Finished difference Result 1165 states and 1933 transitions. [2024-11-28 02:09:25,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:09:25,232 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 114 [2024-11-28 02:09:25,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:09:25,241 INFO L225 Difference]: With dead ends: 1165 [2024-11-28 02:09:25,241 INFO L226 Difference]: Without dead ends: 596 [2024-11-28 02:09:25,244 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 02:09:25,245 INFO L435 NwaCegarLoop]: 946 mSDtfsCounter, 90 mSDsluCounter, 4634 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 5580 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 02:09:25,247 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 5580 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:09:25,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2024-11-28 02:09:25,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 585. [2024-11-28 02:09:25,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 451 states have (on average 1.6674057649667406) internal successors, (752), 469 states have internal predecessors, (752), 107 states have call successors, (107), 26 states have call predecessors, (107), 26 states have return successors, (106), 102 states have call predecessors, (106), 104 states have call successors, (106) [2024-11-28 02:09:25,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 965 transitions. [2024-11-28 02:09:25,298 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 965 transitions. Word has length 114 [2024-11-28 02:09:25,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:09:25,299 INFO L471 AbstractCegarLoop]: Abstraction has 585 states and 965 transitions. [2024-11-28 02:09:25,299 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-28 02:09:25,299 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 965 transitions. [2024-11-28 02:09:25,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-28 02:09:25,303 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:09:25,304 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 02:09:25,304 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 02:09:25,304 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:09:25,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:09:25,309 INFO L85 PathProgramCache]: Analyzing trace with hash -771454386, now seen corresponding path program 1 times [2024-11-28 02:09:25,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:09:25,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468501577] [2024-11-28 02:09:25,309 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:09:25,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:09:25,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:09:25,545 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-28 02:09:25,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:09:25,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468501577] [2024-11-28 02:09:25,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468501577] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:09:25,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:09:25,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:09:25,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649972682] [2024-11-28 02:09:25,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:09:25,546 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:09:25,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:09:25,547 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:09:25,547 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:09:25,547 INFO L87 Difference]: Start difference. First operand 585 states and 965 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-28 02:09:25,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:09:25,627 INFO L93 Difference]: Finished difference Result 1152 states and 1911 transitions. [2024-11-28 02:09:25,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:09:25,627 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 114 [2024-11-28 02:09:25,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:09:25,633 INFO L225 Difference]: With dead ends: 1152 [2024-11-28 02:09:25,634 INFO L226 Difference]: Without dead ends: 555 [2024-11-28 02:09:25,639 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 02:09:25,641 INFO L435 NwaCegarLoop]: 935 mSDtfsCounter, 14 mSDsluCounter, 1865 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2800 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 02:09:25,641 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2800 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:09:25,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2024-11-28 02:09:25,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 555. [2024-11-28 02:09:25,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 555 states, 424 states have (on average 1.650943396226415) internal successors, (700), 440 states have internal predecessors, (700), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2024-11-28 02:09:25,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 909 transitions. [2024-11-28 02:09:25,680 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 909 transitions. Word has length 114 [2024-11-28 02:09:25,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:09:25,681 INFO L471 AbstractCegarLoop]: Abstraction has 555 states and 909 transitions. [2024-11-28 02:09:25,681 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-28 02:09:25,681 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 909 transitions. [2024-11-28 02:09:25,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-11-28 02:09:25,685 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:09:25,685 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 02:09:25,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 02:09:25,685 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:09:25,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:09:25,686 INFO L85 PathProgramCache]: Analyzing trace with hash 412045836, now seen corresponding path program 1 times [2024-11-28 02:09:25,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:09:25,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985234552] [2024-11-28 02:09:25,686 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:09:25,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:09:25,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:09:26,041 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-28 02:09:26,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:09:26,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985234552] [2024-11-28 02:09:26,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985234552] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:09:26,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:09:26,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 02:09:26,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547929492] [2024-11-28 02:09:26,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:09:26,043 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:09:26,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:09:26,043 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:09:26,043 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:09:26,044 INFO L87 Difference]: Start difference. First operand 555 states and 909 transitions. Second operand has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-28 02:09:26,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:09:26,158 INFO L93 Difference]: Finished difference Result 1103 states and 1817 transitions. [2024-11-28 02:09:26,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:09:26,158 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 115 [2024-11-28 02:09:26,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:09:26,165 INFO L225 Difference]: With dead ends: 1103 [2024-11-28 02:09:26,165 INFO L226 Difference]: Without dead ends: 549 [2024-11-28 02:09:26,169 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 02:09:26,170 INFO L435 NwaCegarLoop]: 899 mSDtfsCounter, 63 mSDsluCounter, 4437 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 5336 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:09:26,170 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 5336 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:09:26,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2024-11-28 02:09:26,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 549. [2024-11-28 02:09:26,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 418 states have (on average 1.6435406698564594) internal successors, (687), 434 states have internal predecessors, (687), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2024-11-28 02:09:26,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 896 transitions. [2024-11-28 02:09:26,217 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 896 transitions. Word has length 115 [2024-11-28 02:09:26,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:09:26,217 INFO L471 AbstractCegarLoop]: Abstraction has 549 states and 896 transitions. [2024-11-28 02:09:26,217 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-28 02:09:26,217 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 896 transitions. [2024-11-28 02:09:26,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-28 02:09:26,224 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:09:26,225 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 02:09:26,225 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 02:09:26,225 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:09:26,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:09:26,225 INFO L85 PathProgramCache]: Analyzing trace with hash 112341076, now seen corresponding path program 1 times [2024-11-28 02:09:26,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:09:26,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640879737] [2024-11-28 02:09:26,226 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:09:26,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:09:26,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:09:26,559 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-28 02:09:26,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:09:26,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640879737] [2024-11-28 02:09:26,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640879737] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:09:26,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:09:26,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 02:09:26,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952448980] [2024-11-28 02:09:26,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:09:26,560 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:09:26,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:09:26,560 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:09:26,560 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:09:26,560 INFO L87 Difference]: Start difference. First operand 549 states and 896 transitions. Second operand has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-28 02:09:26,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:09:26,669 INFO L93 Difference]: Finished difference Result 1091 states and 1791 transitions. [2024-11-28 02:09:26,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:09:26,669 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 116 [2024-11-28 02:09:26,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:09:26,675 INFO L225 Difference]: With dead ends: 1091 [2024-11-28 02:09:26,675 INFO L226 Difference]: Without dead ends: 543 [2024-11-28 02:09:26,678 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 02:09:26,680 INFO L435 NwaCegarLoop]: 887 mSDtfsCounter, 49 mSDsluCounter, 4389 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 5276 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:09:26,680 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 5276 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:09:26,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2024-11-28 02:09:26,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 543. [2024-11-28 02:09:26,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 412 states have (on average 1.6359223300970873) internal successors, (674), 428 states have internal predecessors, (674), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2024-11-28 02:09:26,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 883 transitions. [2024-11-28 02:09:26,711 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 883 transitions. Word has length 116 [2024-11-28 02:09:26,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:09:26,712 INFO L471 AbstractCegarLoop]: Abstraction has 543 states and 883 transitions. [2024-11-28 02:09:26,712 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-28 02:09:26,712 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 883 transitions. [2024-11-28 02:09:26,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-28 02:09:26,717 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:09:26,717 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 02:09:26,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 02:09:26,718 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:09:26,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:09:26,718 INFO L85 PathProgramCache]: Analyzing trace with hash 860001749, now seen corresponding path program 1 times [2024-11-28 02:09:26,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:09:26,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305560853] [2024-11-28 02:09:26,718 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:09:26,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:09:26,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:09:27,036 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-28 02:09:27,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:09:27,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305560853] [2024-11-28 02:09:27,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305560853] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:09:27,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:09:27,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 02:09:27,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112205820] [2024-11-28 02:09:27,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:09:27,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:09:27,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:09:27,038 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:09:27,038 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:09:27,038 INFO L87 Difference]: Start difference. First operand 543 states and 883 transitions. Second operand has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-28 02:09:27,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:09:27,132 INFO L93 Difference]: Finished difference Result 1079 states and 1765 transitions. [2024-11-28 02:09:27,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:09:27,133 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 116 [2024-11-28 02:09:27,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:09:27,141 INFO L225 Difference]: With dead ends: 1079 [2024-11-28 02:09:27,141 INFO L226 Difference]: Without dead ends: 543 [2024-11-28 02:09:27,144 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 02:09:27,145 INFO L435 NwaCegarLoop]: 875 mSDtfsCounter, 24 mSDsluCounter, 4353 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 5228 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:09:27,145 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 5228 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:09:27,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2024-11-28 02:09:27,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 543. [2024-11-28 02:09:27,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 412 states have (on average 1.633495145631068) internal successors, (673), 428 states have internal predecessors, (673), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2024-11-28 02:09:27,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 882 transitions. [2024-11-28 02:09:27,176 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 882 transitions. Word has length 116 [2024-11-28 02:09:27,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:09:27,177 INFO L471 AbstractCegarLoop]: Abstraction has 543 states and 882 transitions. [2024-11-28 02:09:27,177 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-28 02:09:27,177 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 882 transitions. [2024-11-28 02:09:27,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-28 02:09:27,182 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:09:27,182 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 02:09:27,182 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 02:09:27,182 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:09:27,182 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:09:27,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1743358000, now seen corresponding path program 1 times [2024-11-28 02:09:27,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:09:27,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792660648] [2024-11-28 02:09:27,183 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:09:27,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:09:27,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:09:27,366 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-28 02:09:27,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:09:27,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792660648] [2024-11-28 02:09:27,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792660648] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:09:27,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:09:27,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:09:27,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981955867] [2024-11-28 02:09:27,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:09:27,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:09:27,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:09:27,369 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:09:27,369 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:09:27,369 INFO L87 Difference]: Start difference. First operand 543 states and 882 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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 02:09:27,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:09:27,440 INFO L93 Difference]: Finished difference Result 1070 states and 1750 transitions. [2024-11-28 02:09:27,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:09:27,444 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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 117 [2024-11-28 02:09:27,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:09:27,448 INFO L225 Difference]: With dead ends: 1070 [2024-11-28 02:09:27,448 INFO L226 Difference]: Without dead ends: 543 [2024-11-28 02:09:27,452 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 02:09:27,453 INFO L435 NwaCegarLoop]: 867 mSDtfsCounter, 15 mSDsluCounter, 1719 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 2586 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:09:27,453 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 2586 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:09:27,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2024-11-28 02:09:27,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 543. [2024-11-28 02:09:27,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 412 states have (on average 1.6310679611650485) internal successors, (672), 428 states have internal predecessors, (672), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2024-11-28 02:09:27,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 881 transitions. [2024-11-28 02:09:27,483 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 881 transitions. Word has length 117 [2024-11-28 02:09:27,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:09:27,484 INFO L471 AbstractCegarLoop]: Abstraction has 543 states and 881 transitions. [2024-11-28 02:09:27,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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 02:09:27,484 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 881 transitions. [2024-11-28 02:09:27,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-28 02:09:27,488 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:09:27,489 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 02:09:27,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 02:09:27,489 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:09:27,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:09:27,490 INFO L85 PathProgramCache]: Analyzing trace with hash 981822644, now seen corresponding path program 1 times [2024-11-28 02:09:27,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:09:27,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314199029] [2024-11-28 02:09:27,490 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:09:27,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:09:27,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:09:27,658 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-28 02:09:27,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:09:27,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314199029] [2024-11-28 02:09:27,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314199029] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:09:27,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:09:27,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:09:27,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540764459] [2024-11-28 02:09:27,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:09:27,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:09:27,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:09:27,660 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:09:27,661 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:09:27,661 INFO L87 Difference]: Start difference. First operand 543 states and 881 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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 02:09:27,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:09:27,750 INFO L93 Difference]: Finished difference Result 1070 states and 1748 transitions. [2024-11-28 02:09:27,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:09:27,752 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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 118 [2024-11-28 02:09:27,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:09:27,756 INFO L225 Difference]: With dead ends: 1070 [2024-11-28 02:09:27,756 INFO L226 Difference]: Without dead ends: 543 [2024-11-28 02:09:27,759 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 02:09:27,760 INFO L435 NwaCegarLoop]: 868 mSDtfsCounter, 14 mSDsluCounter, 1720 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2588 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 02:09:27,761 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2588 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:09:27,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2024-11-28 02:09:27,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 543. [2024-11-28 02:09:27,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 412 states have (on average 1.6286407766990292) internal successors, (671), 428 states have internal predecessors, (671), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2024-11-28 02:09:27,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 880 transitions. [2024-11-28 02:09:27,788 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 880 transitions. Word has length 118 [2024-11-28 02:09:27,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:09:27,788 INFO L471 AbstractCegarLoop]: Abstraction has 543 states and 880 transitions. [2024-11-28 02:09:27,788 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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 02:09:27,788 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 880 transitions. [2024-11-28 02:09:27,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-28 02:09:27,791 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:09:27,791 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 02:09:27,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 02:09:27,791 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:09:27,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:09:27,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1392786485, now seen corresponding path program 1 times [2024-11-28 02:09:27,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:09:27,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835310705] [2024-11-28 02:09:27,792 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:09:27,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:09:27,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:09:27,966 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-28 02:09:27,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:09:27,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835310705] [2024-11-28 02:09:27,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835310705] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:09:27,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:09:27,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:09:27,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646277552] [2024-11-28 02:09:27,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:09:27,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:09:27,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:09:27,968 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:09:27,968 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:09:27,968 INFO L87 Difference]: Start difference. First operand 543 states and 880 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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 02:09:28,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:09:28,035 INFO L93 Difference]: Finished difference Result 1070 states and 1746 transitions. [2024-11-28 02:09:28,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:09:28,035 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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 119 [2024-11-28 02:09:28,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:09:28,040 INFO L225 Difference]: With dead ends: 1070 [2024-11-28 02:09:28,040 INFO L226 Difference]: Without dead ends: 543 [2024-11-28 02:09:28,043 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 02:09:28,045 INFO L435 NwaCegarLoop]: 869 mSDtfsCounter, 13 mSDsluCounter, 1721 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2590 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 02:09:28,045 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2590 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:09:28,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2024-11-28 02:09:28,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 543. [2024-11-28 02:09:28,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 412 states have (on average 1.6262135922330097) internal successors, (670), 428 states have internal predecessors, (670), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2024-11-28 02:09:28,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 879 transitions. [2024-11-28 02:09:28,076 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 879 transitions. Word has length 119 [2024-11-28 02:09:28,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:09:28,076 INFO L471 AbstractCegarLoop]: Abstraction has 543 states and 879 transitions. [2024-11-28 02:09:28,077 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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 02:09:28,077 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 879 transitions. [2024-11-28 02:09:28,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-28 02:09:28,080 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:09:28,080 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 02:09:28,080 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 02:09:28,080 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:09:28,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:09:28,081 INFO L85 PathProgramCache]: Analyzing trace with hash -503480231, now seen corresponding path program 1 times [2024-11-28 02:09:28,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:09:28,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779706617] [2024-11-28 02:09:28,081 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:09:28,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:09:28,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:09:28,284 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-28 02:09:28,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:09:28,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779706617] [2024-11-28 02:09:28,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779706617] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:09:28,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:09:28,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:09:28,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756198275] [2024-11-28 02:09:28,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:09:28,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:09:28,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:09:28,286 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:09:28,286 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:09:28,286 INFO L87 Difference]: Start difference. First operand 543 states and 879 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 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 02:09:28,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:09:28,362 INFO L93 Difference]: Finished difference Result 1070 states and 1744 transitions. [2024-11-28 02:09:28,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:09:28,363 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 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 120 [2024-11-28 02:09:28,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:09:28,368 INFO L225 Difference]: With dead ends: 1070 [2024-11-28 02:09:28,369 INFO L226 Difference]: Without dead ends: 543 [2024-11-28 02:09:28,372 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 02:09:28,374 INFO L435 NwaCegarLoop]: 870 mSDtfsCounter, 12 mSDsluCounter, 1722 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2592 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 02:09:28,376 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2592 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:09:28,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2024-11-28 02:09:28,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 543. [2024-11-28 02:09:28,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 412 states have (on average 1.6237864077669903) internal successors, (669), 428 states have internal predecessors, (669), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2024-11-28 02:09:28,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 878 transitions. [2024-11-28 02:09:28,414 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 878 transitions. Word has length 120 [2024-11-28 02:09:28,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:09:28,414 INFO L471 AbstractCegarLoop]: Abstraction has 543 states and 878 transitions. [2024-11-28 02:09:28,414 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 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 02:09:28,414 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 878 transitions. [2024-11-28 02:09:28,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-28 02:09:28,419 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:09:28,419 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 02:09:28,419 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 02:09:28,420 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:09:28,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:09:28,421 INFO L85 PathProgramCache]: Analyzing trace with hash -909450182, now seen corresponding path program 1 times [2024-11-28 02:09:28,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:09:28,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573384215] [2024-11-28 02:09:28,421 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:09:28,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:09:28,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:09:28,731 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-28 02:09:28,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:09:28,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573384215] [2024-11-28 02:09:28,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573384215] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:09:28,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1081262994] [2024-11-28 02:09:28,732 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:09:28,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:09:28,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41c94d54-1e5b-440f-9961-2f3f0ae8a4d8/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:09:28,738 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41c94d54-1e5b-440f-9961-2f3f0ae8a4d8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:09:28,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41c94d54-1e5b-440f-9961-2f3f0ae8a4d8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:09:29,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:09:29,271 INFO L256 TraceCheckSpWp]: Trace formula consists of 1634 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 02:09:29,283 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:09:29,474 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-28 02:09:29,475 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:09:29,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1081262994] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:09:29,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:09:29,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-28 02:09:29,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438952172] [2024-11-28 02:09:29,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:09:29,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:09:29,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:09:29,476 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:09:29,476 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:09:29,476 INFO L87 Difference]: Start difference. First operand 543 states and 878 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-28 02:09:29,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:09:29,582 INFO L93 Difference]: Finished difference Result 1540 states and 2522 transitions. [2024-11-28 02:09:29,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:09:29,583 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 121 [2024-11-28 02:09:29,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:09:29,591 INFO L225 Difference]: With dead ends: 1540 [2024-11-28 02:09:29,591 INFO L226 Difference]: Without dead ends: 1015 [2024-11-28 02:09:29,595 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:09:29,596 INFO L435 NwaCegarLoop]: 1499 mSDtfsCounter, 801 mSDsluCounter, 774 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 801 SdHoareTripleChecker+Valid, 2273 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:09:29,596 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [801 Valid, 2273 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:09:29,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states. [2024-11-28 02:09:29,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 1000. [2024-11-28 02:09:29,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1000 states, 766 states have (on average 1.6370757180156659) internal successors, (1254), 797 states have internal predecessors, (1254), 187 states have call successors, (187), 47 states have call predecessors, (187), 46 states have return successors, (189), 181 states have call predecessors, (189), 184 states have call successors, (189) [2024-11-28 02:09:29,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1000 states to 1000 states and 1630 transitions. [2024-11-28 02:09:29,660 INFO L78 Accepts]: Start accepts. Automaton has 1000 states and 1630 transitions. Word has length 121 [2024-11-28 02:09:29,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:09:29,660 INFO L471 AbstractCegarLoop]: Abstraction has 1000 states and 1630 transitions. [2024-11-28 02:09:29,661 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-28 02:09:29,661 INFO L276 IsEmpty]: Start isEmpty. Operand 1000 states and 1630 transitions. [2024-11-28 02:09:29,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-28 02:09:29,666 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:09:29,666 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 02:09:29,678 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41c94d54-1e5b-440f-9961-2f3f0ae8a4d8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 02:09:29,866 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41c94d54-1e5b-440f-9961-2f3f0ae8a4d8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-28 02:09:29,867 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:09:29,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:09:29,867 INFO L85 PathProgramCache]: Analyzing trace with hash -212264279, now seen corresponding path program 1 times [2024-11-28 02:09:29,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:09:29,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575351986] [2024-11-28 02:09:29,867 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:09:29,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:09:29,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:09:30,186 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-28 02:09:30,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:09:30,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575351986] [2024-11-28 02:09:30,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575351986] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:09:30,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268103378] [2024-11-28 02:09:30,187 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:09:30,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:09:30,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41c94d54-1e5b-440f-9961-2f3f0ae8a4d8/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:09:30,189 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41c94d54-1e5b-440f-9961-2f3f0ae8a4d8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:09:30,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41c94d54-1e5b-440f-9961-2f3f0ae8a4d8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 02:09:30,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:09:30,711 INFO L256 TraceCheckSpWp]: Trace formula consists of 1635 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 02:09:30,717 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:09:30,880 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-28 02:09:30,881 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:09:30,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [268103378] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:09:30,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:09:30,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-28 02:09:30,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619322499] [2024-11-28 02:09:30,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:09:30,883 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:09:30,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:09:30,884 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:09:30,884 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:09:30,884 INFO L87 Difference]: Start difference. First operand 1000 states and 1630 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-28 02:09:31,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:09:31,016 INFO L93 Difference]: Finished difference Result 2454 states and 4028 transitions. [2024-11-28 02:09:31,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:09:31,017 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 122 [2024-11-28 02:09:31,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:09:31,032 INFO L225 Difference]: With dead ends: 2454 [2024-11-28 02:09:31,032 INFO L226 Difference]: Without dead ends: 1472 [2024-11-28 02:09:31,040 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:09:31,041 INFO L435 NwaCegarLoop]: 940 mSDtfsCounter, 803 mSDsluCounter, 772 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 803 SdHoareTripleChecker+Valid, 1712 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:09:31,041 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [803 Valid, 1712 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:09:31,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1472 states. [2024-11-28 02:09:31,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1472 to 1424. [2024-11-28 02:09:31,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1424 states, 1093 states have (on average 1.6495882891125344) internal successors, (1803), 1139 states have internal predecessors, (1803), 265 states have call successors, (265), 65 states have call predecessors, (265), 65 states have return successors, (272), 258 states have call predecessors, (272), 262 states have call successors, (272) [2024-11-28 02:09:31,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1424 states to 1424 states and 2340 transitions. [2024-11-28 02:09:31,143 INFO L78 Accepts]: Start accepts. Automaton has 1424 states and 2340 transitions. Word has length 122 [2024-11-28 02:09:31,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:09:31,144 INFO L471 AbstractCegarLoop]: Abstraction has 1424 states and 2340 transitions. [2024-11-28 02:09:31,144 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-28 02:09:31,144 INFO L276 IsEmpty]: Start isEmpty. Operand 1424 states and 2340 transitions. [2024-11-28 02:09:31,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-28 02:09:31,152 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:09:31,152 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 02:09:31,166 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41c94d54-1e5b-440f-9961-2f3f0ae8a4d8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 02:09:31,352 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41c94d54-1e5b-440f-9961-2f3f0ae8a4d8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-28 02:09:31,353 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:09:31,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:09:31,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1268213379, now seen corresponding path program 1 times [2024-11-28 02:09:31,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:09:31,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988515771] [2024-11-28 02:09:31,354 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:09:31,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:09:31,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:09:31,591 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-28 02:09:31,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:09:31,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988515771] [2024-11-28 02:09:31,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988515771] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:09:31,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:09:31,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:09:31,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943661158] [2024-11-28 02:09:31,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:09:31,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:09:31,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:09:31,593 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:09:31,593 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:09:31,594 INFO L87 Difference]: Start difference. First operand 1424 states and 2340 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 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 02:09:32,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:09:32,475 INFO L93 Difference]: Finished difference Result 4208 states and 7039 transitions. [2024-11-28 02:09:32,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 02:09:32,475 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 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 124 [2024-11-28 02:09:32,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:09:32,503 INFO L225 Difference]: With dead ends: 4208 [2024-11-28 02:09:32,504 INFO L226 Difference]: Without dead ends: 2802 [2024-11-28 02:09:32,516 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 02:09:32,516 INFO L435 NwaCegarLoop]: 977 mSDtfsCounter, 872 mSDsluCounter, 3522 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 883 SdHoareTripleChecker+Valid, 4499 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 02:09:32,517 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [883 Valid, 4499 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 02:09:32,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2802 states. [2024-11-28 02:09:32,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2802 to 2755. [2024-11-28 02:09:32,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2755 states, 2119 states have (on average 1.6531382727701747) internal successors, (3503), 2207 states have internal predecessors, (3503), 509 states have call successors, (509), 124 states have call predecessors, (509), 126 states have return successors, (603), 501 states have call predecessors, (603), 505 states have call successors, (603) [2024-11-28 02:09:32,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2755 states to 2755 states and 4615 transitions. [2024-11-28 02:09:32,808 INFO L78 Accepts]: Start accepts. Automaton has 2755 states and 4615 transitions. Word has length 124 [2024-11-28 02:09:32,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:09:32,809 INFO L471 AbstractCegarLoop]: Abstraction has 2755 states and 4615 transitions. [2024-11-28 02:09:32,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 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 02:09:32,811 INFO L276 IsEmpty]: Start isEmpty. Operand 2755 states and 4615 transitions. [2024-11-28 02:09:32,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-28 02:09:32,821 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:09:32,821 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 02:09:32,821 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 02:09:32,821 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:09:32,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:09:32,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1080290138, now seen corresponding path program 1 times [2024-11-28 02:09:32,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:09:32,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985204426] [2024-11-28 02:09:32,822 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:09:32,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:09:32,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:09:33,103 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-28 02:09:33,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:09:33,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985204426] [2024-11-28 02:09:33,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985204426] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:09:33,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183392530] [2024-11-28 02:09:33,104 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:09:33,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:09:33,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41c94d54-1e5b-440f-9961-2f3f0ae8a4d8/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:09:33,106 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41c94d54-1e5b-440f-9961-2f3f0ae8a4d8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:09:33,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41c94d54-1e5b-440f-9961-2f3f0ae8a4d8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 02:09:33,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:09:33,579 INFO L256 TraceCheckSpWp]: Trace formula consists of 1653 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 02:09:33,588 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:09:33,801 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-28 02:09:33,802 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:09:33,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183392530] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:09:33,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:09:33,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-28 02:09:33,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123663570] [2024-11-28 02:09:33,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:09:33,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:09:33,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:09:33,805 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:09:33,805 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:09:33,806 INFO L87 Difference]: Start difference. First operand 2755 states and 4615 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-28 02:09:34,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:09:34,308 INFO L93 Difference]: Finished difference Result 7975 states and 13550 transitions. [2024-11-28 02:09:34,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:09:34,309 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) Word has length 125 [2024-11-28 02:09:34,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:09:34,356 INFO L225 Difference]: With dead ends: 7975 [2024-11-28 02:09:34,356 INFO L226 Difference]: Without dead ends: 5239 [2024-11-28 02:09:34,380 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:09:34,381 INFO L435 NwaCegarLoop]: 848 mSDtfsCounter, 713 mSDsluCounter, 782 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 713 SdHoareTripleChecker+Valid, 1630 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:09:34,382 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [713 Valid, 1630 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:09:34,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5239 states. [2024-11-28 02:09:34,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5239 to 5202. [2024-11-28 02:09:34,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5202 states, 3988 states have (on average 1.6208625877632898) internal successors, (6464), 4162 states have internal predecessors, (6464), 966 states have call successors, (966), 242 states have call predecessors, (966), 247 states have return successors, (1251), 953 states have call predecessors, (1251), 960 states have call successors, (1251) [2024-11-28 02:09:34,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5202 states to 5202 states and 8681 transitions. [2024-11-28 02:09:34,802 INFO L78 Accepts]: Start accepts. Automaton has 5202 states and 8681 transitions. Word has length 125 [2024-11-28 02:09:34,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:09:34,803 INFO L471 AbstractCegarLoop]: Abstraction has 5202 states and 8681 transitions. [2024-11-28 02:09:34,803 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-28 02:09:34,803 INFO L276 IsEmpty]: Start isEmpty. Operand 5202 states and 8681 transitions. [2024-11-28 02:09:34,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-28 02:09:34,809 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:09:34,810 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 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] [2024-11-28 02:09:34,821 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41c94d54-1e5b-440f-9961-2f3f0ae8a4d8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 02:09:35,013 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41c94d54-1e5b-440f-9961-2f3f0ae8a4d8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-28 02:09:35,014 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:09:35,014 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:09:35,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1297740956, now seen corresponding path program 1 times [2024-11-28 02:09:35,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:09:35,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405801151] [2024-11-28 02:09:35,015 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:09:35,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:09:35,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:09:35,348 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-28 02:09:35,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:09:35,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405801151] [2024-11-28 02:09:35,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405801151] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:09:35,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [719081650] [2024-11-28 02:09:35,349 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:09:35,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:09:35,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41c94d54-1e5b-440f-9961-2f3f0ae8a4d8/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:09:35,352 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41c94d54-1e5b-440f-9961-2f3f0ae8a4d8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:09:35,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41c94d54-1e5b-440f-9961-2f3f0ae8a4d8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 02:09:35,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:09:35,851 INFO L256 TraceCheckSpWp]: Trace formula consists of 1646 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:09:35,857 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:09:35,892 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-28 02:09:35,892 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:09:35,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [719081650] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:09:35,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:09:35,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-28 02:09:35,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584581593] [2024-11-28 02:09:35,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:09:35,894 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:09:35,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:09:35,894 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:09:35,894 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:09:35,894 INFO L87 Difference]: Start difference. First operand 5202 states and 8681 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-28 02:09:36,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:09:36,485 INFO L93 Difference]: Finished difference Result 15492 states and 26176 transitions. [2024-11-28 02:09:36,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:09:36,489 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 127 [2024-11-28 02:09:36,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:09:36,585 INFO L225 Difference]: With dead ends: 15492 [2024-11-28 02:09:36,586 INFO L226 Difference]: Without dead ends: 10311 [2024-11-28 02:09:36,627 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:09:36,628 INFO L435 NwaCegarLoop]: 879 mSDtfsCounter, 863 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 863 SdHoareTripleChecker+Valid, 1732 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:09:36,628 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [863 Valid, 1732 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:09:36,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10311 states. [2024-11-28 02:09:37,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10311 to 10208. [2024-11-28 02:09:37,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10208 states, 7852 states have (on average 1.6244268976057055) internal successors, (12755), 8180 states have internal predecessors, (12755), 1872 states have call successors, (1872), 466 states have call predecessors, (1872), 483 states have return successors, (2496), 1867 states have call predecessors, (2496), 1862 states have call successors, (2496) [2024-11-28 02:09:37,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10208 states to 10208 states and 17123 transitions. [2024-11-28 02:09:37,365 INFO L78 Accepts]: Start accepts. Automaton has 10208 states and 17123 transitions. Word has length 127 [2024-11-28 02:09:37,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:09:37,366 INFO L471 AbstractCegarLoop]: Abstraction has 10208 states and 17123 transitions. [2024-11-28 02:09:37,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-28 02:09:37,367 INFO L276 IsEmpty]: Start isEmpty. Operand 10208 states and 17123 transitions. [2024-11-28 02:09:37,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-28 02:09:37,373 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:09:37,373 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 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] [2024-11-28 02:09:37,384 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41c94d54-1e5b-440f-9961-2f3f0ae8a4d8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 02:09:37,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41c94d54-1e5b-440f-9961-2f3f0ae8a4d8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-28 02:09:37,574 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:09:37,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:09:37,575 INFO L85 PathProgramCache]: Analyzing trace with hash 286623706, now seen corresponding path program 1 times [2024-11-28 02:09:37,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:09:37,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059513099] [2024-11-28 02:09:37,575 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:09:37,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:09:37,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:09:37,802 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-28 02:09:37,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:09:37,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059513099] [2024-11-28 02:09:37,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059513099] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:09:37,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995489674] [2024-11-28 02:09:37,803 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:09:37,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:09:37,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41c94d54-1e5b-440f-9961-2f3f0ae8a4d8/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:09:37,805 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41c94d54-1e5b-440f-9961-2f3f0ae8a4d8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:09:37,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41c94d54-1e5b-440f-9961-2f3f0ae8a4d8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 02:09:38,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:09:38,270 INFO L256 TraceCheckSpWp]: Trace formula consists of 1645 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 02:09:38,275 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:09:38,430 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-28 02:09:38,431 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:09:38,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [995489674] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:09:38,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:09:38,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2024-11-28 02:09:38,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928327476] [2024-11-28 02:09:38,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:09:38,432 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:09:38,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:09:38,432 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:09:38,432 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:09:38,433 INFO L87 Difference]: Start difference. First operand 10208 states and 17123 transitions. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 5 states have internal predecessors, (83), 4 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-28 02:09:39,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:09:39,752 INFO L93 Difference]: Finished difference Result 19297 states and 32436 transitions. [2024-11-28 02:09:39,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 02:09:39,753 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 5 states have internal predecessors, (83), 4 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 127 [2024-11-28 02:09:39,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:09:39,828 INFO L225 Difference]: With dead ends: 19297 [2024-11-28 02:09:39,828 INFO L226 Difference]: Without dead ends: 9107 [2024-11-28 02:09:39,875 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-28 02:09:39,876 INFO L435 NwaCegarLoop]: 924 mSDtfsCounter, 733 mSDsluCounter, 3122 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 737 SdHoareTripleChecker+Valid, 4046 SdHoareTripleChecker+Invalid, 541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 02:09:39,877 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [737 Valid, 4046 Invalid, 541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 517 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 02:09:39,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9107 states. [2024-11-28 02:09:40,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9107 to 9085. [2024-11-28 02:09:40,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9085 states, 7005 states have (on average 1.6107066381156316) internal successors, (11283), 7280 states have internal predecessors, (11283), 1638 states have call successors, (1638), 426 states have call predecessors, (1638), 441 states have return successors, (2158), 1634 states have call predecessors, (2158), 1628 states have call successors, (2158) [2024-11-28 02:09:40,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9085 states to 9085 states and 15079 transitions. [2024-11-28 02:09:40,425 INFO L78 Accepts]: Start accepts. Automaton has 9085 states and 15079 transitions. Word has length 127 [2024-11-28 02:09:40,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:09:40,425 INFO L471 AbstractCegarLoop]: Abstraction has 9085 states and 15079 transitions. [2024-11-28 02:09:40,425 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 5 states have internal predecessors, (83), 4 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-28 02:09:40,426 INFO L276 IsEmpty]: Start isEmpty. Operand 9085 states and 15079 transitions. [2024-11-28 02:09:40,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-28 02:09:40,430 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:09:40,431 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 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] [2024-11-28 02:09:40,441 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41c94d54-1e5b-440f-9961-2f3f0ae8a4d8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 02:09:40,634 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41c94d54-1e5b-440f-9961-2f3f0ae8a4d8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-28 02:09:40,635 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:09:40,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:09:40,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1318334234, now seen corresponding path program 1 times [2024-11-28 02:09:40,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:09:40,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954307699] [2024-11-28 02:09:40,636 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:09:40,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:09:40,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:09:40,797 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-28 02:09:40,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:09:40,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954307699] [2024-11-28 02:09:40,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954307699] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:09:40,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:09:40,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:09:40,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593094522] [2024-11-28 02:09:40,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:09:40,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:09:40,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:09:40,800 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:09:40,800 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:09:40,801 INFO L87 Difference]: Start difference. First operand 9085 states and 15079 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-28 02:09:41,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:09:41,391 INFO L93 Difference]: Finished difference Result 18200 states and 30553 transitions. [2024-11-28 02:09:41,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:09:41,392 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 127 [2024-11-28 02:09:41,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:09:41,455 INFO L225 Difference]: With dead ends: 18200 [2024-11-28 02:09:41,455 INFO L226 Difference]: Without dead ends: 9133 [2024-11-28 02:09:41,608 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 02:09:41,610 INFO L435 NwaCegarLoop]: 861 mSDtfsCounter, 12 mSDsluCounter, 1697 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2558 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 02:09:41,610 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2558 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:09:41,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9133 states. [2024-11-28 02:09:41,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9133 to 9101. [2024-11-28 02:09:41,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9101 states, 7017 states have (on average 1.60909220464586) internal successors, (11291), 7292 states have internal predecessors, (11291), 1638 states have call successors, (1638), 434 states have call predecessors, (1638), 445 states have return successors, (2132), 1630 states have call predecessors, (2132), 1628 states have call successors, (2132) [2024-11-28 02:09:42,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9101 states to 9101 states and 15061 transitions. [2024-11-28 02:09:42,036 INFO L78 Accepts]: Start accepts. Automaton has 9101 states and 15061 transitions. Word has length 127 [2024-11-28 02:09:42,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:09:42,036 INFO L471 AbstractCegarLoop]: Abstraction has 9101 states and 15061 transitions. [2024-11-28 02:09:42,037 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-28 02:09:42,037 INFO L276 IsEmpty]: Start isEmpty. Operand 9101 states and 15061 transitions. [2024-11-28 02:09:42,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-11-28 02:09:42,042 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:09:42,042 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1] [2024-11-28 02:09:42,042 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-28 02:09:42,042 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:09:42,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:09:42,043 INFO L85 PathProgramCache]: Analyzing trace with hash -73480786, now seen corresponding path program 1 times [2024-11-28 02:09:42,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:09:42,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659775552] [2024-11-28 02:09:42,043 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:09:42,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:09:42,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:09:42,328 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-28 02:09:42,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:09:42,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659775552] [2024-11-28 02:09:42,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659775552] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:09:42,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:09:42,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:09:42,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527221069] [2024-11-28 02:09:42,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:09:42,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:09:42,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:09:42,330 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:09:42,331 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:09:42,332 INFO L87 Difference]: Start difference. First operand 9101 states and 15061 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, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-28 02:09:43,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:09:43,759 INFO L93 Difference]: Finished difference Result 27249 states and 46349 transitions. [2024-11-28 02:09:43,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 02:09:43,760 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, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) Word has length 135 [2024-11-28 02:09:43,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:09:43,899 INFO L225 Difference]: With dead ends: 27249 [2024-11-28 02:09:43,899 INFO L226 Difference]: Without dead ends: 18166 [2024-11-28 02:09:43,956 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 02:09:43,957 INFO L435 NwaCegarLoop]: 947 mSDtfsCounter, 866 mSDsluCounter, 3439 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 874 SdHoareTripleChecker+Valid, 4386 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 02:09:43,958 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [874 Valid, 4386 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 02:09:43,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18166 states. [2024-11-28 02:09:44,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18166 to 18065. [2024-11-28 02:09:44,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18065 states, 13940 states have (on average 1.6055954088952655) internal successors, (22382), 14481 states have internal predecessors, (22382), 3231 states have call successors, (3231), 862 states have call predecessors, (3231), 893 states have return successors, (4933), 3233 states have call predecessors, (4933), 3213 states have call successors, (4933) [2024-11-28 02:09:45,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18065 states to 18065 states and 30546 transitions. [2024-11-28 02:09:45,179 INFO L78 Accepts]: Start accepts. Automaton has 18065 states and 30546 transitions. Word has length 135 [2024-11-28 02:09:45,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:09:45,180 INFO L471 AbstractCegarLoop]: Abstraction has 18065 states and 30546 transitions. [2024-11-28 02:09:45,180 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, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-28 02:09:45,180 INFO L276 IsEmpty]: Start isEmpty. Operand 18065 states and 30546 transitions. [2024-11-28 02:09:45,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-11-28 02:09:45,187 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:09:45,187 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1] [2024-11-28 02:09:45,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-28 02:09:45,188 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:09:45,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:09:45,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1831930979, now seen corresponding path program 1 times [2024-11-28 02:09:45,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:09:45,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052481148] [2024-11-28 02:09:45,189 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:09:45,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:09:45,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:09:45,350 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-28 02:09:45,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:09:45,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052481148] [2024-11-28 02:09:45,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052481148] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:09:45,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:09:45,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:09:45,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641869613] [2024-11-28 02:09:45,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:09:45,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:09:45,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:09:45,352 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:09:45,352 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:09:45,353 INFO L87 Difference]: Start difference. First operand 18065 states and 30546 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 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 02:09:46,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:09:46,687 INFO L93 Difference]: Finished difference Result 36256 states and 62315 transitions. [2024-11-28 02:09:46,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:09:46,688 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 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 136 [2024-11-28 02:09:46,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:09:46,823 INFO L225 Difference]: With dead ends: 36256 [2024-11-28 02:09:46,823 INFO L226 Difference]: Without dead ends: 18209 [2024-11-28 02:09:46,972 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 02:09:46,973 INFO L435 NwaCegarLoop]: 858 mSDtfsCounter, 12 mSDsluCounter, 1694 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2552 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 02:09:46,973 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2552 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:09:46,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18209 states. [2024-11-28 02:09:47,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18209 to 18145. [2024-11-28 02:09:47,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18145 states, 14012 states have (on average 1.6030545246931203) internal successors, (22462), 14537 states have internal predecessors, (22462), 3231 states have call successors, (3231), 894 states have call predecessors, (3231), 901 states have return successors, (4893), 3225 states have call predecessors, (4893), 3213 states have call successors, (4893) [2024-11-28 02:09:48,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18145 states to 18145 states and 30586 transitions. [2024-11-28 02:09:48,027 INFO L78 Accepts]: Start accepts. Automaton has 18145 states and 30586 transitions. Word has length 136 [2024-11-28 02:09:48,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:09:48,028 INFO L471 AbstractCegarLoop]: Abstraction has 18145 states and 30586 transitions. [2024-11-28 02:09:48,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 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 02:09:48,028 INFO L276 IsEmpty]: Start isEmpty. Operand 18145 states and 30586 transitions. [2024-11-28 02:09:48,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-28 02:09:48,034 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:09:48,035 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:09:48,035 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-28 02:09:48,035 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:09:48,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:09:48,036 INFO L85 PathProgramCache]: Analyzing trace with hash 731579524, now seen corresponding path program 1 times [2024-11-28 02:09:48,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:09:48,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833406248] [2024-11-28 02:09:48,036 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:09:48,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:09:48,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:09:48,235 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-28 02:09:48,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:09:48,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833406248] [2024-11-28 02:09:48,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833406248] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:09:48,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:09:48,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:09:48,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302905232] [2024-11-28 02:09:48,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:09:48,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:09:48,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:09:48,238 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:09:48,238 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:09:48,238 INFO L87 Difference]: Start difference. First operand 18145 states and 30586 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, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-28 02:09:50,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:09:50,840 INFO L93 Difference]: Finished difference Result 54521 states and 95593 transitions. [2024-11-28 02:09:50,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 02:09:50,841 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, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) Word has length 145 [2024-11-28 02:09:50,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:09:51,186 INFO L225 Difference]: With dead ends: 54521 [2024-11-28 02:09:51,186 INFO L226 Difference]: Without dead ends: 36394 [2024-11-28 02:09:51,378 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 02:09:51,382 INFO L435 NwaCegarLoop]: 937 mSDtfsCounter, 863 mSDsluCounter, 3419 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 869 SdHoareTripleChecker+Valid, 4356 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 02:09:51,382 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [869 Valid, 4356 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 02:09:51,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36394 states. [2024-11-28 02:09:53,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36394 to 36229. [2024-11-28 02:09:53,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36229 states, 27987 states have (on average 1.5995640833244007) internal successors, (44767), 29028 states have internal predecessors, (44767), 6428 states have call successors, (6428), 1782 states have call predecessors, (6428), 1813 states have return successors, (11830), 6442 states have call predecessors, (11830), 6394 states have call successors, (11830) [2024-11-28 02:09:53,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36229 states to 36229 states and 63025 transitions. [2024-11-28 02:09:53,875 INFO L78 Accepts]: Start accepts. Automaton has 36229 states and 63025 transitions. Word has length 145 [2024-11-28 02:09:53,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:09:53,877 INFO L471 AbstractCegarLoop]: Abstraction has 36229 states and 63025 transitions. [2024-11-28 02:09:53,878 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, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-28 02:09:53,878 INFO L276 IsEmpty]: Start isEmpty. Operand 36229 states and 63025 transitions. [2024-11-28 02:09:53,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-28 02:09:53,885 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:09:53,886 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:09:53,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-28 02:09:53,886 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:09:53,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:09:53,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1444869681, now seen corresponding path program 1 times [2024-11-28 02:09:53,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:09:53,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733051636] [2024-11-28 02:09:53,887 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:09:53,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:09:53,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:09:54,045 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-28 02:09:54,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:09:54,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733051636] [2024-11-28 02:09:54,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733051636] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:09:54,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:09:54,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:09:54,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582378396] [2024-11-28 02:09:54,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:09:54,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:09:54,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:09:54,048 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:09:54,048 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:09:54,048 INFO L87 Difference]: Start difference. First operand 36229 states and 63025 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-28 02:09:56,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:09:56,513 INFO L93 Difference]: Finished difference Result 72728 states and 129849 transitions. [2024-11-28 02:09:56,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:09:56,514 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 146 [2024-11-28 02:09:56,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:09:56,899 INFO L225 Difference]: With dead ends: 72728 [2024-11-28 02:09:56,899 INFO L226 Difference]: Without dead ends: 36517 [2024-11-28 02:09:57,245 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 02:09:57,247 INFO L435 NwaCegarLoop]: 858 mSDtfsCounter, 11 mSDsluCounter, 1694 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2552 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:09:57,247 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2552 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:09:57,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36517 states. [2024-11-28 02:09:58,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36517 to 36389. [2024-11-28 02:09:58,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36389 states, 28131 states have (on average 1.5970637375137748) internal successors, (44927), 29172 states have internal predecessors, (44927), 6428 states have call successors, (6428), 1814 states have call predecessors, (6428), 1829 states have return successors, (11774), 6426 states have call predecessors, (11774), 6394 states have call successors, (11774) [2024-11-28 02:09:59,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36389 states to 36389 states and 63129 transitions. [2024-11-28 02:09:59,751 INFO L78 Accepts]: Start accepts. Automaton has 36389 states and 63129 transitions. Word has length 146 [2024-11-28 02:09:59,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:09:59,752 INFO L471 AbstractCegarLoop]: Abstraction has 36389 states and 63129 transitions. [2024-11-28 02:09:59,752 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-28 02:09:59,752 INFO L276 IsEmpty]: Start isEmpty. Operand 36389 states and 63129 transitions. [2024-11-28 02:09:59,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-28 02:09:59,757 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:09:59,758 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:09:59,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-28 02:09:59,758 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:09:59,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:09:59,759 INFO L85 PathProgramCache]: Analyzing trace with hash 383039175, now seen corresponding path program 1 times [2024-11-28 02:09:59,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:09:59,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350075198] [2024-11-28 02:09:59,759 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:09:59,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:09:59,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:09:59,944 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-11-28 02:09:59,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:09:59,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350075198] [2024-11-28 02:09:59,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350075198] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:09:59,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:09:59,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:09:59,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785596336] [2024-11-28 02:09:59,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:09:59,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:09:59,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:09:59,946 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:09:59,946 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:09:59,946 INFO L87 Difference]: Start difference. First operand 36389 states and 63129 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-28 02:10:04,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:10:04,556 INFO L93 Difference]: Finished difference Result 109489 states and 201915 transitions. [2024-11-28 02:10:04,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 02:10:04,560 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) Word has length 156 [2024-11-28 02:10:04,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:10:05,034 INFO L225 Difference]: With dead ends: 109489 [2024-11-28 02:10:05,034 INFO L226 Difference]: Without dead ends: 73118 [2024-11-28 02:10:05,367 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 02:10:05,369 INFO L435 NwaCegarLoop]: 930 mSDtfsCounter, 857 mSDsluCounter, 3404 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 861 SdHoareTripleChecker+Valid, 4334 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 02:10:05,369 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [861 Valid, 4334 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 02:10:05,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73118 states. [2024-11-28 02:10:08,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73118 to 72825. [2024-11-28 02:10:08,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72825 states, 56306 states have (on average 1.5944304337015593) internal successors, (89776), 58379 states have internal predecessors, (89776), 12833 states have call successors, (12833), 3622 states have call predecessors, (12833), 3685 states have return successors, (30215), 12871 states have call predecessors, (30215), 12767 states have call successors, (30215) [2024-11-28 02:10:10,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72825 states to 72825 states and 132824 transitions. [2024-11-28 02:10:10,360 INFO L78 Accepts]: Start accepts. Automaton has 72825 states and 132824 transitions. Word has length 156 [2024-11-28 02:10:10,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:10:10,360 INFO L471 AbstractCegarLoop]: Abstraction has 72825 states and 132824 transitions. [2024-11-28 02:10:10,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-28 02:10:10,361 INFO L276 IsEmpty]: Start isEmpty. Operand 72825 states and 132824 transitions. [2024-11-28 02:10:10,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-28 02:10:10,368 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:10:10,368 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:10:10,368 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-28 02:10:10,369 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:10:10,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:10:10,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1835276852, now seen corresponding path program 1 times [2024-11-28 02:10:10,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:10:10,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167988381] [2024-11-28 02:10:10,370 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:10:10,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:10:10,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:10:10,502 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-28 02:10:10,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:10:10,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167988381] [2024-11-28 02:10:10,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167988381] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:10:10,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:10:10,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:10:10,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726563395] [2024-11-28 02:10:10,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:10:10,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:10:10,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:10:10,505 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:10:10,505 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:10:10,505 INFO L87 Difference]: Start difference. First operand 72825 states and 132824 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-28 02:10:15,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:10:15,779 INFO L93 Difference]: Finished difference Result 146272 states and 278335 transitions. [2024-11-28 02:10:15,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:10:15,780 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 157 [2024-11-28 02:10:15,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:10:16,612 INFO L225 Difference]: With dead ends: 146272 [2024-11-28 02:10:16,613 INFO L226 Difference]: Without dead ends: 73465 [2024-11-28 02:10:17,343 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 02:10:17,343 INFO L435 NwaCegarLoop]: 858 mSDtfsCounter, 10 mSDsluCounter, 1694 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2552 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:10:17,344 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2552 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:10:17,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73465 states. [2024-11-28 02:10:20,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73465 to 73209. [2024-11-28 02:10:20,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73209 states, 56658 states have (on average 1.5913021991598715) internal successors, (90160), 58731 states have internal predecessors, (90160), 12833 states have call successors, (12833), 3686 states have call predecessors, (12833), 3717 states have return successors, (30151), 12839 states have call predecessors, (30151), 12767 states have call successors, (30151) [2024-11-28 02:10:21,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73209 states to 73209 states and 133144 transitions. [2024-11-28 02:10:21,123 INFO L78 Accepts]: Start accepts. Automaton has 73209 states and 133144 transitions. Word has length 157 [2024-11-28 02:10:21,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:10:21,124 INFO L471 AbstractCegarLoop]: Abstraction has 73209 states and 133144 transitions. [2024-11-28 02:10:21,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-28 02:10:21,124 INFO L276 IsEmpty]: Start isEmpty. Operand 73209 states and 133144 transitions. [2024-11-28 02:10:21,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-28 02:10:21,128 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:10:21,128 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:10:21,128 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-28 02:10:21,129 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:10:21,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:10:21,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1462153363, now seen corresponding path program 1 times [2024-11-28 02:10:21,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:10:21,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826454247] [2024-11-28 02:10:21,129 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:10:21,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:10:21,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:10:21,363 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-28 02:10:21,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:10:21,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826454247] [2024-11-28 02:10:21,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826454247] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:10:21,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080954550] [2024-11-28 02:10:21,363 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:10:21,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:10:21,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41c94d54-1e5b-440f-9961-2f3f0ae8a4d8/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:10:21,367 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41c94d54-1e5b-440f-9961-2f3f0ae8a4d8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:10:21,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41c94d54-1e5b-440f-9961-2f3f0ae8a4d8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 02:10:22,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:10:22,068 INFO L256 TraceCheckSpWp]: Trace formula consists of 1741 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 02:10:22,075 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:10:22,242 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-28 02:10:22,242 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:10:22,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2080954550] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:10:22,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:10:22,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2024-11-28 02:10:22,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764434210] [2024-11-28 02:10:22,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:10:22,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:10:22,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:10:22,244 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:10:22,244 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:10:22,244 INFO L87 Difference]: Start difference. First operand 73209 states and 133144 transitions. Second operand has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 5 states have internal predecessors, (107), 4 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20)