./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec3_product19.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_4d873a23-466d-4753-825c-4e839f102054/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d873a23-466d-4753-825c-4e839f102054/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d873a23-466d-4753-825c-4e839f102054/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d873a23-466d-4753-825c-4e839f102054/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product19.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d873a23-466d-4753-825c-4e839f102054/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d873a23-466d-4753-825c-4e839f102054/bin/uautomizer-verify-84ZbGMXZE1 --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 4eb5ae4a2b95fd78cf87e688565203c0839d6de752e442a1cce7638954224909 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-01 22:58:29,801 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-01 22:58:29,854 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d873a23-466d-4753-825c-4e839f102054/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-01 22:58:29,859 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-01 22:58:29,859 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-01 22:58:29,879 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-01 22:58:29,879 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-01 22:58:29,879 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-01 22:58:29,880 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-01 22:58:29,880 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-01 22:58:29,880 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-01 22:58:29,880 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-01 22:58:29,880 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-01 22:58:29,880 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-01 22:58:29,881 INFO L153 SettingsManager]: * Use SBE=true [2024-12-01 22:58:29,881 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-01 22:58:29,881 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-01 22:58:29,881 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-01 22:58:29,881 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-01 22:58:29,881 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-01 22:58:29,881 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-01 22:58:29,881 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-01 22:58:29,881 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-01 22:58:29,881 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-01 22:58:29,881 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-01 22:58:29,881 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-01 22:58:29,882 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-01 22:58:29,882 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-01 22:58:29,882 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-01 22:58:29,882 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-01 22:58:29,882 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-01 22:58:29,882 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-01 22:58:29,882 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-01 22:58:29,882 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-01 22:58:29,882 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-01 22:58:29,882 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-01 22:58:29,882 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-01 22:58:29,882 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-01 22:58:29,883 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-01 22:58:29,883 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-01 22:58:29,883 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-01 22:58:29,883 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-01 22:58:29,883 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-01 22:58:29,883 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-01 22:58:29,883 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-01 22:58:29,883 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-01 22:58:29,883 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-01 22:58:29,883 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-01 22:58:29,883 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_4d873a23-466d-4753-825c-4e839f102054/bin/uautomizer-verify-84ZbGMXZE1 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 -> 4eb5ae4a2b95fd78cf87e688565203c0839d6de752e442a1cce7638954224909 [2024-12-01 22:58:30,101 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-01 22:58:30,107 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-01 22:58:30,109 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-01 22:58:30,110 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-01 22:58:30,110 INFO L274 PluginConnector]: CDTParser initialized [2024-12-01 22:58:30,111 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d873a23-466d-4753-825c-4e839f102054/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/product-lines/elevator_spec3_product19.cil.c [2024-12-01 22:58:32,698 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d873a23-466d-4753-825c-4e839f102054/bin/uautomizer-verify-84ZbGMXZE1/data/c98ec6a69/eb2b68f226684bec97986e8c94a088e7/FLAG8c715dd73 [2024-12-01 22:58:32,978 INFO L384 CDTParser]: Found 1 translation units. [2024-12-01 22:58:32,978 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d873a23-466d-4753-825c-4e839f102054/sv-benchmarks/c/product-lines/elevator_spec3_product19.cil.c [2024-12-01 22:58:32,994 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d873a23-466d-4753-825c-4e839f102054/bin/uautomizer-verify-84ZbGMXZE1/data/c98ec6a69/eb2b68f226684bec97986e8c94a088e7/FLAG8c715dd73 [2024-12-01 22:58:33,275 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d873a23-466d-4753-825c-4e839f102054/bin/uautomizer-verify-84ZbGMXZE1/data/c98ec6a69/eb2b68f226684bec97986e8c94a088e7 [2024-12-01 22:58:33,276 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-01 22:58:33,277 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-01 22:58:33,278 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-01 22:58:33,278 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-01 22:58:33,281 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-01 22:58:33,281 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 10:58:33" (1/1) ... [2024-12-01 22:58:33,282 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@439c92fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:58:33, skipping insertion in model container [2024-12-01 22:58:33,282 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 10:58:33" (1/1) ... [2024-12-01 22:58:33,321 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-01 22:58:33,704 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_4d873a23-466d-4753-825c-4e839f102054/sv-benchmarks/c/product-lines/elevator_spec3_product19.cil.c[55726,55739] [2024-12-01 22:58:33,732 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-01 22:58:33,743 INFO L200 MainTranslator]: Completed pre-run [2024-12-01 22:58:33,751 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [48] [2024-12-01 22:58:33,752 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [408] [2024-12-01 22:58:33,752 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [423] [2024-12-01 22:58:33,753 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [789] [2024-12-01 22:58:33,753 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [2329] [2024-12-01 22:58:33,753 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [2447] [2024-12-01 22:58:33,753 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification3_spec.i","") [2482] [2024-12-01 22:58:33,753 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [2669] [2024-12-01 22:58:33,753 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [2678] [2024-12-01 22:58:33,753 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [2769] [2024-12-01 22:58:33,834 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_4d873a23-466d-4753-825c-4e839f102054/sv-benchmarks/c/product-lines/elevator_spec3_product19.cil.c[55726,55739] [2024-12-01 22:58:33,847 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-01 22:58:33,867 INFO L204 MainTranslator]: Completed translation [2024-12-01 22:58:33,868 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:58:33 WrapperNode [2024-12-01 22:58:33,868 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-01 22:58:33,869 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-01 22:58:33,869 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-01 22:58:33,869 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-01 22:58:33,874 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:58:33" (1/1) ... [2024-12-01 22:58:33,892 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:58:33" (1/1) ... [2024-12-01 22:58:33,932 INFO L138 Inliner]: procedures = 92, calls = 346, calls flagged for inlining = 23, calls inlined = 20, statements flattened = 1089 [2024-12-01 22:58:33,932 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-01 22:58:33,933 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-01 22:58:33,933 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-01 22:58:33,933 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-01 22:58:33,942 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:58:33" (1/1) ... [2024-12-01 22:58:33,942 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:58:33" (1/1) ... [2024-12-01 22:58:33,947 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:58:33" (1/1) ... [2024-12-01 22:58:33,971 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]. [2024-12-01 22:58:33,972 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:58:33" (1/1) ... [2024-12-01 22:58:33,972 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:58:33" (1/1) ... [2024-12-01 22:58:33,991 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:58:33" (1/1) ... [2024-12-01 22:58:33,993 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:58:33" (1/1) ... [2024-12-01 22:58:34,004 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:58:33" (1/1) ... [2024-12-01 22:58:34,010 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:58:33" (1/1) ... [2024-12-01 22:58:34,014 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:58:33" (1/1) ... [2024-12-01 22:58:34,023 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-01 22:58:34,023 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-01 22:58:34,024 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-01 22:58:34,024 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-01 22:58:34,024 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:58:33" (1/1) ... [2024-12-01 22:58:34,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-01 22:58:34,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d873a23-466d-4753-825c-4e839f102054/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 22:58:34,066 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d873a23-466d-4753-825c-4e839f102054/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-01 22:58:34,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d873a23-466d-4753-825c-4e839f102054/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-01 22:58:34,092 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-01 22:58:34,092 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2024-12-01 22:58:34,092 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2024-12-01 22:58:34,092 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2024-12-01 22:58:34,092 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2024-12-01 22:58:34,092 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2024-12-01 22:58:34,092 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2024-12-01 22:58:34,092 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-12-01 22:58:34,093 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-12-01 22:58:34,093 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2024-12-01 22:58:34,093 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2024-12-01 22:58:34,093 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-12-01 22:58:34,093 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-12-01 22:58:34,093 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2024-12-01 22:58:34,093 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2024-12-01 22:58:34,093 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-12-01 22:58:34,093 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-12-01 22:58:34,093 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-12-01 22:58:34,093 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-12-01 22:58:34,093 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-12-01 22:58:34,093 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-12-01 22:58:34,093 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-12-01 22:58:34,093 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-12-01 22:58:34,093 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-12-01 22:58:34,094 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-12-01 22:58:34,094 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-12-01 22:58:34,094 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-12-01 22:58:34,094 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-12-01 22:58:34,094 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-12-01 22:58:34,094 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2024-12-01 22:58:34,094 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2024-12-01 22:58:34,094 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2024-12-01 22:58:34,094 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2024-12-01 22:58:34,094 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-12-01 22:58:34,094 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-12-01 22:58:34,094 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2024-12-01 22:58:34,094 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2024-12-01 22:58:34,094 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-12-01 22:58:34,094 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-12-01 22:58:34,094 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-12-01 22:58:34,094 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-12-01 22:58:34,095 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-12-01 22:58:34,095 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-12-01 22:58:34,095 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-12-01 22:58:34,095 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-12-01 22:58:34,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-01 22:58:34,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-01 22:58:34,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-12-01 22:58:34,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-12-01 22:58:34,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-12-01 22:58:34,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-12-01 22:58:34,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-12-01 22:58:34,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-12-01 22:58:34,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-12-01 22:58:34,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-12-01 22:58:34,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-12-01 22:58:34,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-12-01 22:58:34,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-12-01 22:58:34,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-12-01 22:58:34,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-12-01 22:58:34,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-12-01 22:58:34,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-12-01 22:58:34,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-12-01 22:58:34,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2024-12-01 22:58:34,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2024-12-01 22:58:34,096 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2024-12-01 22:58:34,096 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2024-12-01 22:58:34,096 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-12-01 22:58:34,096 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-12-01 22:58:34,096 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-12-01 22:58:34,096 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-12-01 22:58:34,096 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-12-01 22:58:34,096 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-12-01 22:58:34,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-01 22:58:34,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-01 22:58:34,097 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-12-01 22:58:34,097 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-12-01 22:58:34,248 INFO L234 CfgBuilder]: Building ICFG [2024-12-01 22:58:34,250 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-01 22:58:35,292 INFO L? ?]: Removed 457 outVars from TransFormulas that were not future-live. [2024-12-01 22:58:35,292 INFO L283 CfgBuilder]: Performing block encoding [2024-12-01 22:58:35,313 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-01 22:58:35,313 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-01 22:58:35,314 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 10:58:35 BoogieIcfgContainer [2024-12-01 22:58:35,314 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-01 22:58:35,316 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-01 22:58:35,316 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-01 22:58:35,320 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-01 22:58:35,320 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 10:58:33" (1/3) ... [2024-12-01 22:58:35,321 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@715060d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 10:58:35, skipping insertion in model container [2024-12-01 22:58:35,321 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:58:33" (2/3) ... [2024-12-01 22:58:35,321 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@715060d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 10:58:35, skipping insertion in model container [2024-12-01 22:58:35,321 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 10:58:35" (3/3) ... [2024-12-01 22:58:35,322 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product19.cil.c [2024-12-01 22:58:35,333 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-01 22:58:35,335 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec3_product19.cil.c that has 28 procedures, 588 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-01 22:58:35,402 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-01 22:58:35,412 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;@3e4f1669, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-01 22:58:35,412 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-01 22:58:35,417 INFO L276 IsEmpty]: Start isEmpty. Operand has 588 states, 451 states have (on average 1.6696230598669624) internal successors, (753), 469 states have internal predecessors, (753), 108 states have call successors, (108), 27 states have call predecessors, (108), 27 states have return successors, (108), 105 states have call predecessors, (108), 108 states have call successors, (108) [2024-12-01 22:58:35,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-12-01 22:58:35,435 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 22:58:35,436 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] [2024-12-01 22:58:35,437 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 22:58:35,441 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 22:58:35,441 INFO L85 PathProgramCache]: Analyzing trace with hash 428179115, now seen corresponding path program 1 times [2024-12-01 22:58:35,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 22:58:35,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390051153] [2024-12-01 22:58:35,446 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 22:58:35,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 22:58:35,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 22:58:36,100 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-12-01 22:58:36,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 22:58:36,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390051153] [2024-12-01 22:58:36,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390051153] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 22:58:36,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 22:58:36,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-01 22:58:36,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154345827] [2024-12-01 22:58:36,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 22:58:36,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-01 22:58:36,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 22:58:36,125 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-01 22:58:36,126 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-01 22:58:36,129 INFO L87 Difference]: Start difference. First operand has 588 states, 451 states have (on average 1.6696230598669624) internal successors, (753), 469 states have internal predecessors, (753), 108 states have call successors, (108), 27 states have call predecessors, (108), 27 states have return successors, (108), 105 states have call predecessors, (108), 108 states have call successors, (108) 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) [2024-12-01 22:58:36,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 22:58:36,361 INFO L93 Difference]: Finished difference Result 1173 states and 1950 transitions. [2024-12-01 22:58:36,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-01 22:58:36,364 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 [2024-12-01 22:58:36,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 22:58:36,378 INFO L225 Difference]: With dead ends: 1173 [2024-12-01 22:58:36,378 INFO L226 Difference]: Without dead ends: 593 [2024-12-01 22:58:36,386 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 [2024-12-01 22:58:36,388 INFO L435 NwaCegarLoop]: 951 mSDtfsCounter, 91 mSDsluCounter, 4670 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 5621 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 [2024-12-01 22:58:36,389 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 5621 Invalid, 77 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 22:58:36,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2024-12-01 22:58:36,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 591. [2024-12-01 22:58:36,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 591 states, 454 states have (on average 1.6607929515418502) internal successors, (754), 472 states have internal predecessors, (754), 109 states have call successors, (109), 27 states have call predecessors, (109), 27 states have return successors, (108), 104 states have call predecessors, (108), 106 states have call successors, (108) [2024-12-01 22:58:36,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 971 transitions. [2024-12-01 22:58:36,472 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 971 transitions. Word has length 113 [2024-12-01 22:58:36,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 22:58:36,473 INFO L471 AbstractCegarLoop]: Abstraction has 591 states and 971 transitions. [2024-12-01 22:58:36,473 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) [2024-12-01 22:58:36,473 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 971 transitions. [2024-12-01 22:58:36,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-12-01 22:58:36,479 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 22:58:36,480 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] [2024-12-01 22:58:36,480 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-01 22:58:36,480 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 22:58:36,481 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 22:58:36,481 INFO L85 PathProgramCache]: Analyzing trace with hash 976898526, now seen corresponding path program 1 times [2024-12-01 22:58:36,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 22:58:36,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004388991] [2024-12-01 22:58:36,481 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 22:58:36,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 22:58:36,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 22:58:36,848 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-12-01 22:58:36,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 22:58:36,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004388991] [2024-12-01 22:58:36,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004388991] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 22:58:36,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 22:58:36,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-01 22:58:36,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214477269] [2024-12-01 22:58:36,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 22:58:36,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-01 22:58:36,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 22:58:36,851 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-01 22:58:36,851 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-01 22:58:36,851 INFO L87 Difference]: Start difference. First operand 591 states and 971 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) [2024-12-01 22:58:36,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 22:58:36,988 INFO L93 Difference]: Finished difference Result 1177 states and 1945 transitions. [2024-12-01 22:58:36,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-01 22:58:36,989 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 [2024-12-01 22:58:36,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 22:58:36,996 INFO L225 Difference]: With dead ends: 1177 [2024-12-01 22:58:36,996 INFO L226 Difference]: Without dead ends: 602 [2024-12-01 22:58:37,001 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 [2024-12-01 22:58:37,002 INFO L435 NwaCegarLoop]: 953 mSDtfsCounter, 90 mSDsluCounter, 4669 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 5622 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 [2024-12-01 22:58:37,002 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 5622 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 22:58:37,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2024-12-01 22:58:37,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 591. [2024-12-01 22:58:37,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 591 states, 454 states have (on average 1.6607929515418502) internal successors, (754), 472 states have internal predecessors, (754), 109 states have call successors, (109), 27 states have call predecessors, (109), 27 states have return successors, (108), 104 states have call predecessors, (108), 106 states have call successors, (108) [2024-12-01 22:58:37,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 971 transitions. [2024-12-01 22:58:37,051 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 971 transitions. Word has length 114 [2024-12-01 22:58:37,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 22:58:37,051 INFO L471 AbstractCegarLoop]: Abstraction has 591 states and 971 transitions. [2024-12-01 22:58:37,051 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) [2024-12-01 22:58:37,051 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 971 transitions. [2024-12-01 22:58:37,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-12-01 22:58:37,056 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 22:58:37,056 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] [2024-12-01 22:58:37,056 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-01 22:58:37,057 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 22:58:37,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 22:58:37,057 INFO L85 PathProgramCache]: Analyzing trace with hash -940156742, now seen corresponding path program 1 times [2024-12-01 22:58:37,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 22:58:37,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185616230] [2024-12-01 22:58:37,058 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 22:58:37,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 22:58:37,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 22:58:37,259 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-12-01 22:58:37,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 22:58:37,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185616230] [2024-12-01 22:58:37,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185616230] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 22:58:37,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 22:58:37,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-01 22:58:37,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234111885] [2024-12-01 22:58:37,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 22:58:37,260 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-01 22:58:37,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 22:58:37,261 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-01 22:58:37,261 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-01 22:58:37,261 INFO L87 Difference]: Start difference. First operand 591 states and 971 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) [2024-12-01 22:58:37,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 22:58:37,343 INFO L93 Difference]: Finished difference Result 1164 states and 1923 transitions. [2024-12-01 22:58:37,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-01 22:58:37,344 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 [2024-12-01 22:58:37,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 22:58:37,350 INFO L225 Difference]: With dead ends: 1164 [2024-12-01 22:58:37,350 INFO L226 Difference]: Without dead ends: 561 [2024-12-01 22:58:37,354 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 [2024-12-01 22:58:37,355 INFO L435 NwaCegarLoop]: 941 mSDtfsCounter, 14 mSDsluCounter, 1877 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2818 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 [2024-12-01 22:58:37,355 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2818 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 22:58:37,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2024-12-01 22:58:37,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 561. [2024-12-01 22:58:37,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 427 states have (on average 1.6440281030444965) internal successors, (702), 443 states have internal predecessors, (702), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 103 states have call predecessors, (105), 105 states have call successors, (105) [2024-12-01 22:58:37,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 915 transitions. [2024-12-01 22:58:37,390 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 915 transitions. Word has length 114 [2024-12-01 22:58:37,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 22:58:37,390 INFO L471 AbstractCegarLoop]: Abstraction has 561 states and 915 transitions. [2024-12-01 22:58:37,390 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) [2024-12-01 22:58:37,390 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 915 transitions. [2024-12-01 22:58:37,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-12-01 22:58:37,394 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 22:58:37,394 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] [2024-12-01 22:58:37,395 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-01 22:58:37,395 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 22:58:37,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 22:58:37,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1155706321, now seen corresponding path program 1 times [2024-12-01 22:58:37,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 22:58:37,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606032305] [2024-12-01 22:58:37,396 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 22:58:37,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 22:58:37,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 22:58:37,731 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-12-01 22:58:37,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 22:58:37,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606032305] [2024-12-01 22:58:37,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606032305] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 22:58:37,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 22:58:37,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-01 22:58:37,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039506109] [2024-12-01 22:58:37,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 22:58:37,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-01 22:58:37,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 22:58:37,734 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-01 22:58:37,734 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-01 22:58:37,734 INFO L87 Difference]: Start difference. First operand 561 states and 915 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) [2024-12-01 22:58:37,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 22:58:37,857 INFO L93 Difference]: Finished difference Result 1115 states and 1829 transitions. [2024-12-01 22:58:37,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-01 22:58:37,858 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 [2024-12-01 22:58:37,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 22:58:37,864 INFO L225 Difference]: With dead ends: 1115 [2024-12-01 22:58:37,864 INFO L226 Difference]: Without dead ends: 555 [2024-12-01 22:58:37,869 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-01 22:58:37,870 INFO L435 NwaCegarLoop]: 905 mSDtfsCounter, 63 mSDsluCounter, 4467 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 5372 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 [2024-12-01 22:58:37,870 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 5372 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 22:58:37,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2024-12-01 22:58:37,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 555. [2024-12-01 22:58:37,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 555 states, 421 states have (on average 1.6365795724465557) internal successors, (689), 437 states have internal predecessors, (689), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 103 states have call predecessors, (105), 105 states have call successors, (105) [2024-12-01 22:58:37,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 902 transitions. [2024-12-01 22:58:37,914 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 902 transitions. Word has length 115 [2024-12-01 22:58:37,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 22:58:37,914 INFO L471 AbstractCegarLoop]: Abstraction has 555 states and 902 transitions. [2024-12-01 22:58:37,915 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) [2024-12-01 22:58:37,915 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 902 transitions. [2024-12-01 22:58:37,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-12-01 22:58:37,920 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 22:58:37,920 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] [2024-12-01 22:58:37,920 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-01 22:58:37,920 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 22:58:37,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 22:58:37,921 INFO L85 PathProgramCache]: Analyzing trace with hash -510017246, now seen corresponding path program 1 times [2024-12-01 22:58:37,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 22:58:37,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006516493] [2024-12-01 22:58:37,921 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 22:58:37,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 22:58:37,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 22:58:38,218 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-12-01 22:58:38,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 22:58:38,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006516493] [2024-12-01 22:58:38,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006516493] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 22:58:38,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 22:58:38,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-01 22:58:38,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577415332] [2024-12-01 22:58:38,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 22:58:38,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-01 22:58:38,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 22:58:38,220 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-01 22:58:38,220 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-01 22:58:38,220 INFO L87 Difference]: Start difference. First operand 555 states and 902 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) [2024-12-01 22:58:38,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 22:58:38,340 INFO L93 Difference]: Finished difference Result 1103 states and 1803 transitions. [2024-12-01 22:58:38,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-01 22:58:38,341 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 [2024-12-01 22:58:38,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 22:58:38,347 INFO L225 Difference]: With dead ends: 1103 [2024-12-01 22:58:38,347 INFO L226 Difference]: Without dead ends: 549 [2024-12-01 22:58:38,351 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 [2024-12-01 22:58:38,352 INFO L435 NwaCegarLoop]: 893 mSDtfsCounter, 49 mSDsluCounter, 4419 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 5312 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 [2024-12-01 22:58:38,352 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 5312 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 22:58:38,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2024-12-01 22:58:38,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 549. [2024-12-01 22:58:38,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 415 states have (on average 1.6289156626506025) internal successors, (676), 431 states have internal predecessors, (676), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 103 states have call predecessors, (105), 105 states have call successors, (105) [2024-12-01 22:58:38,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 889 transitions. [2024-12-01 22:58:38,399 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 889 transitions. Word has length 116 [2024-12-01 22:58:38,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 22:58:38,399 INFO L471 AbstractCegarLoop]: Abstraction has 549 states and 889 transitions. [2024-12-01 22:58:38,399 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) [2024-12-01 22:58:38,399 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 889 transitions. [2024-12-01 22:58:38,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-12-01 22:58:38,403 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 22:58:38,403 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] [2024-12-01 22:58:38,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-01 22:58:38,404 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 22:58:38,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 22:58:38,404 INFO L85 PathProgramCache]: Analyzing trace with hash 237643427, now seen corresponding path program 1 times [2024-12-01 22:58:38,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 22:58:38,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72929556] [2024-12-01 22:58:38,404 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 22:58:38,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 22:58:38,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 22:58:38,652 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-12-01 22:58:38,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 22:58:38,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72929556] [2024-12-01 22:58:38,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72929556] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 22:58:38,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 22:58:38,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-01 22:58:38,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988782969] [2024-12-01 22:58:38,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 22:58:38,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-01 22:58:38,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 22:58:38,654 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-01 22:58:38,654 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-01 22:58:38,655 INFO L87 Difference]: Start difference. First operand 549 states and 889 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) [2024-12-01 22:58:38,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 22:58:38,758 INFO L93 Difference]: Finished difference Result 1091 states and 1777 transitions. [2024-12-01 22:58:38,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-01 22:58:38,759 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 [2024-12-01 22:58:38,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 22:58:38,764 INFO L225 Difference]: With dead ends: 1091 [2024-12-01 22:58:38,764 INFO L226 Difference]: Without dead ends: 549 [2024-12-01 22:58:38,768 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 [2024-12-01 22:58:38,769 INFO L435 NwaCegarLoop]: 881 mSDtfsCounter, 24 mSDsluCounter, 4383 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 5264 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 [2024-12-01 22:58:38,769 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 5264 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 22:58:38,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2024-12-01 22:58:38,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 549. [2024-12-01 22:58:38,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 415 states have (on average 1.6265060240963856) internal successors, (675), 431 states have internal predecessors, (675), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 103 states have call predecessors, (105), 105 states have call successors, (105) [2024-12-01 22:58:38,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 888 transitions. [2024-12-01 22:58:38,802 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 888 transitions. Word has length 116 [2024-12-01 22:58:38,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 22:58:38,802 INFO L471 AbstractCegarLoop]: Abstraction has 549 states and 888 transitions. [2024-12-01 22:58:38,803 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) [2024-12-01 22:58:38,803 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 888 transitions. [2024-12-01 22:58:38,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-12-01 22:58:38,806 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 22:58:38,806 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] [2024-12-01 22:58:38,807 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-01 22:58:38,807 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 22:58:38,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 22:58:38,807 INFO L85 PathProgramCache]: Analyzing trace with hash 363437491, now seen corresponding path program 1 times [2024-12-01 22:58:38,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 22:58:38,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119855734] [2024-12-01 22:58:38,807 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 22:58:38,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 22:58:38,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 22:58:38,957 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-12-01 22:58:38,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 22:58:38,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119855734] [2024-12-01 22:58:38,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119855734] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 22:58:38,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 22:58:38,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-01 22:58:38,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222911319] [2024-12-01 22:58:38,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 22:58:38,958 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-01 22:58:38,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 22:58:38,958 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-01 22:58:38,958 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-01 22:58:38,958 INFO L87 Difference]: Start difference. First operand 549 states and 888 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) [2024-12-01 22:58:39,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 22:58:39,021 INFO L93 Difference]: Finished difference Result 1082 states and 1762 transitions. [2024-12-01 22:58:39,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-01 22:58:39,022 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 [2024-12-01 22:58:39,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 22:58:39,026 INFO L225 Difference]: With dead ends: 1082 [2024-12-01 22:58:39,026 INFO L226 Difference]: Without dead ends: 549 [2024-12-01 22:58:39,029 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 [2024-12-01 22:58:39,030 INFO L435 NwaCegarLoop]: 873 mSDtfsCounter, 15 mSDsluCounter, 1731 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 2604 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 [2024-12-01 22:58:39,030 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 2604 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 22:58:39,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2024-12-01 22:58:39,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 549. [2024-12-01 22:58:39,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 415 states have (on average 1.6240963855421686) internal successors, (674), 431 states have internal predecessors, (674), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 103 states have call predecessors, (105), 105 states have call successors, (105) [2024-12-01 22:58:39,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 887 transitions. [2024-12-01 22:58:39,056 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 887 transitions. Word has length 117 [2024-12-01 22:58:39,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 22:58:39,057 INFO L471 AbstractCegarLoop]: Abstraction has 549 states and 887 transitions. [2024-12-01 22:58:39,057 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) [2024-12-01 22:58:39,057 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 887 transitions. [2024-12-01 22:58:39,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-12-01 22:58:39,060 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 22:58:39,060 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] [2024-12-01 22:58:39,060 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-01 22:58:39,060 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 22:58:39,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 22:58:39,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1887278114, now seen corresponding path program 1 times [2024-12-01 22:58:39,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 22:58:39,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876899499] [2024-12-01 22:58:39,061 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 22:58:39,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 22:58:39,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 22:58:39,189 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-12-01 22:58:39,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 22:58:39,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876899499] [2024-12-01 22:58:39,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876899499] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 22:58:39,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 22:58:39,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-01 22:58:39,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045611876] [2024-12-01 22:58:39,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 22:58:39,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-01 22:58:39,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 22:58:39,190 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-01 22:58:39,190 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-01 22:58:39,190 INFO L87 Difference]: Start difference. First operand 549 states and 887 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) [2024-12-01 22:58:39,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 22:58:39,247 INFO L93 Difference]: Finished difference Result 1082 states and 1760 transitions. [2024-12-01 22:58:39,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-01 22:58:39,247 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 [2024-12-01 22:58:39,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 22:58:39,252 INFO L225 Difference]: With dead ends: 1082 [2024-12-01 22:58:39,252 INFO L226 Difference]: Without dead ends: 549 [2024-12-01 22:58:39,255 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 [2024-12-01 22:58:39,256 INFO L435 NwaCegarLoop]: 874 mSDtfsCounter, 14 mSDsluCounter, 1732 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2606 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 [2024-12-01 22:58:39,256 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2606 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 22:58:39,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2024-12-01 22:58:39,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 549. [2024-12-01 22:58:39,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 415 states have (on average 1.621686746987952) internal successors, (673), 431 states have internal predecessors, (673), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 103 states have call predecessors, (105), 105 states have call successors, (105) [2024-12-01 22:58:39,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 886 transitions. [2024-12-01 22:58:39,281 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 886 transitions. Word has length 118 [2024-12-01 22:58:39,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 22:58:39,282 INFO L471 AbstractCegarLoop]: Abstraction has 549 states and 886 transitions. [2024-12-01 22:58:39,282 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) [2024-12-01 22:58:39,282 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 886 transitions. [2024-12-01 22:58:39,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-12-01 22:58:39,285 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 22:58:39,285 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] [2024-12-01 22:58:39,285 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-01 22:58:39,285 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 22:58:39,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 22:58:39,286 INFO L85 PathProgramCache]: Analyzing trace with hash 130453272, now seen corresponding path program 1 times [2024-12-01 22:58:39,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 22:58:39,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027593417] [2024-12-01 22:58:39,286 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 22:58:39,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 22:58:39,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 22:58:39,424 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-12-01 22:58:39,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 22:58:39,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027593417] [2024-12-01 22:58:39,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027593417] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 22:58:39,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 22:58:39,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-01 22:58:39,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190006488] [2024-12-01 22:58:39,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 22:58:39,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-01 22:58:39,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 22:58:39,426 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-01 22:58:39,426 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-01 22:58:39,426 INFO L87 Difference]: Start difference. First operand 549 states and 886 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) [2024-12-01 22:58:39,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 22:58:39,477 INFO L93 Difference]: Finished difference Result 1082 states and 1758 transitions. [2024-12-01 22:58:39,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-01 22:58:39,478 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 [2024-12-01 22:58:39,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 22:58:39,482 INFO L225 Difference]: With dead ends: 1082 [2024-12-01 22:58:39,482 INFO L226 Difference]: Without dead ends: 549 [2024-12-01 22:58:39,485 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 [2024-12-01 22:58:39,486 INFO L435 NwaCegarLoop]: 875 mSDtfsCounter, 13 mSDsluCounter, 1733 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2608 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 [2024-12-01 22:58:39,486 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2608 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 22:58:39,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2024-12-01 22:58:39,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 549. [2024-12-01 22:58:39,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 415 states have (on average 1.619277108433735) internal successors, (672), 431 states have internal predecessors, (672), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 103 states have call predecessors, (105), 105 states have call successors, (105) [2024-12-01 22:58:39,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 885 transitions. [2024-12-01 22:58:39,512 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 885 transitions. Word has length 119 [2024-12-01 22:58:39,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 22:58:39,512 INFO L471 AbstractCegarLoop]: Abstraction has 549 states and 885 transitions. [2024-12-01 22:58:39,512 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) [2024-12-01 22:58:39,513 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 885 transitions. [2024-12-01 22:58:39,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-12-01 22:58:39,515 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 22:58:39,516 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] [2024-12-01 22:58:39,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-01 22:58:39,516 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 22:58:39,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 22:58:39,516 INFO L85 PathProgramCache]: Analyzing trace with hash -247785881, now seen corresponding path program 1 times [2024-12-01 22:58:39,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 22:58:39,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597604475] [2024-12-01 22:58:39,517 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 22:58:39,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 22:58:39,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 22:58:39,643 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-12-01 22:58:39,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 22:58:39,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597604475] [2024-12-01 22:58:39,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597604475] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 22:58:39,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 22:58:39,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-01 22:58:39,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627294278] [2024-12-01 22:58:39,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 22:58:39,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-01 22:58:39,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 22:58:39,644 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-01 22:58:39,644 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-01 22:58:39,645 INFO L87 Difference]: Start difference. First operand 549 states and 885 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) [2024-12-01 22:58:39,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 22:58:39,693 INFO L93 Difference]: Finished difference Result 1082 states and 1756 transitions. [2024-12-01 22:58:39,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-01 22:58:39,693 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 [2024-12-01 22:58:39,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 22:58:39,698 INFO L225 Difference]: With dead ends: 1082 [2024-12-01 22:58:39,698 INFO L226 Difference]: Without dead ends: 549 [2024-12-01 22:58:39,701 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 [2024-12-01 22:58:39,701 INFO L435 NwaCegarLoop]: 876 mSDtfsCounter, 12 mSDsluCounter, 1734 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2610 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 [2024-12-01 22:58:39,702 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2610 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 22:58:39,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2024-12-01 22:58:39,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 549. [2024-12-01 22:58:39,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 415 states have (on average 1.616867469879518) internal successors, (671), 431 states have internal predecessors, (671), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 103 states have call predecessors, (105), 105 states have call successors, (105) [2024-12-01 22:58:39,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 884 transitions. [2024-12-01 22:58:39,735 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 884 transitions. Word has length 120 [2024-12-01 22:58:39,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 22:58:39,736 INFO L471 AbstractCegarLoop]: Abstraction has 549 states and 884 transitions. [2024-12-01 22:58:39,736 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) [2024-12-01 22:58:39,736 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 884 transitions. [2024-12-01 22:58:39,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-12-01 22:58:39,739 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 22:58:39,739 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] [2024-12-01 22:58:39,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-01 22:58:39,739 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 22:58:39,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 22:58:39,740 INFO L85 PathProgramCache]: Analyzing trace with hash -839541635, now seen corresponding path program 1 times [2024-12-01 22:58:39,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 22:58:39,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818588725] [2024-12-01 22:58:39,740 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 22:58:39,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 22:58:39,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 22:58:40,013 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-12-01 22:58:40,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 22:58:40,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818588725] [2024-12-01 22:58:40,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818588725] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 22:58:40,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488780193] [2024-12-01 22:58:40,014 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 22:58:40,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 22:58:40,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d873a23-466d-4753-825c-4e839f102054/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 22:58:40,016 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d873a23-466d-4753-825c-4e839f102054/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 22:58:40,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d873a23-466d-4753-825c-4e839f102054/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-01 22:58:40,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 22:58:40,405 INFO L256 TraceCheckSpWp]: Trace formula consists of 1641 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-01 22:58:40,413 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 22:58:40,539 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-01 22:58:40,539 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 22:58:40,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [488780193] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 22:58:40,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 22:58:40,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-12-01 22:58:40,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541659317] [2024-12-01 22:58:40,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 22:58:40,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-01 22:58:40,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 22:58:40,541 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-01 22:58:40,541 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-01 22:58:40,541 INFO L87 Difference]: Start difference. First operand 549 states and 884 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) [2024-12-01 22:58:40,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 22:58:40,633 INFO L93 Difference]: Finished difference Result 1558 states and 2540 transitions. [2024-12-01 22:58:40,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-01 22:58:40,634 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 [2024-12-01 22:58:40,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 22:58:40,641 INFO L225 Difference]: With dead ends: 1558 [2024-12-01 22:58:40,641 INFO L226 Difference]: Without dead ends: 1027 [2024-12-01 22:58:40,645 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 [2024-12-01 22:58:40,645 INFO L435 NwaCegarLoop]: 1572 mSDtfsCounter, 807 mSDsluCounter, 780 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 807 SdHoareTripleChecker+Valid, 2352 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 [2024-12-01 22:58:40,645 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [807 Valid, 2352 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 22:58:40,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1027 states. [2024-12-01 22:58:40,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1027 to 1012. [2024-12-01 22:58:40,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1012 states, 772 states have (on average 1.6295336787564767) internal successors, (1258), 803 states have internal predecessors, (1258), 191 states have call successors, (191), 49 states have call predecessors, (191), 48 states have return successors, (193), 185 states have call predecessors, (193), 188 states have call successors, (193) [2024-12-01 22:58:40,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1012 states to 1012 states and 1642 transitions. [2024-12-01 22:58:40,697 INFO L78 Accepts]: Start accepts. Automaton has 1012 states and 1642 transitions. Word has length 121 [2024-12-01 22:58:40,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 22:58:40,698 INFO L471 AbstractCegarLoop]: Abstraction has 1012 states and 1642 transitions. [2024-12-01 22:58:40,698 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) [2024-12-01 22:58:40,698 INFO L276 IsEmpty]: Start isEmpty. Operand 1012 states and 1642 transitions. [2024-12-01 22:58:40,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-12-01 22:58:40,703 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 22:58:40,703 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] [2024-12-01 22:58:40,715 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d873a23-466d-4753-825c-4e839f102054/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-01 22:58:40,904 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d873a23-466d-4753-825c-4e839f102054/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-12-01 22:58:40,904 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 22:58:40,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 22:58:40,904 INFO L85 PathProgramCache]: Analyzing trace with hash -59480569, now seen corresponding path program 1 times [2024-12-01 22:58:40,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 22:58:40,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133677664] [2024-12-01 22:58:40,905 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 22:58:40,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 22:58:40,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 22:58:41,128 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-12-01 22:58:41,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 22:58:41,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133677664] [2024-12-01 22:58:41,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133677664] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 22:58:41,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1580494164] [2024-12-01 22:58:41,129 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 22:58:41,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 22:58:41,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d873a23-466d-4753-825c-4e839f102054/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 22:58:41,131 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d873a23-466d-4753-825c-4e839f102054/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 22:58:41,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d873a23-466d-4753-825c-4e839f102054/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-01 22:58:41,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 22:58:41,506 INFO L256 TraceCheckSpWp]: Trace formula consists of 1642 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-01 22:58:41,511 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 22:58:41,608 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-01 22:58:41,608 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 22:58:41,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1580494164] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 22:58:41,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 22:58:41,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-12-01 22:58:41,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425639759] [2024-12-01 22:58:41,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 22:58:41,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-01 22:58:41,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 22:58:41,610 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-01 22:58:41,610 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-01 22:58:41,610 INFO L87 Difference]: Start difference. First operand 1012 states and 1642 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) [2024-12-01 22:58:41,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 22:58:41,699 INFO L93 Difference]: Finished difference Result 2484 states and 4058 transitions. [2024-12-01 22:58:41,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-01 22:58:41,699 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 [2024-12-01 22:58:41,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 22:58:41,711 INFO L225 Difference]: With dead ends: 2484 [2024-12-01 22:58:41,711 INFO L226 Difference]: Without dead ends: 1490 [2024-12-01 22:58:41,717 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-01 22:58:41,718 INFO L435 NwaCegarLoop]: 882 mSDtfsCounter, 810 mSDsluCounter, 777 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 810 SdHoareTripleChecker+Valid, 1659 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 [2024-12-01 22:58:41,718 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [810 Valid, 1659 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 22:58:41,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1490 states. [2024-12-01 22:58:41,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1490 to 1442. [2024-12-01 22:58:41,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1442 states, 1102 states have (on average 1.6415607985480944) internal successors, (1809), 1148 states have internal predecessors, (1809), 271 states have call successors, (271), 68 states have call predecessors, (271), 68 states have return successors, (278), 264 states have call predecessors, (278), 268 states have call successors, (278) [2024-12-01 22:58:41,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1442 states to 1442 states and 2358 transitions. [2024-12-01 22:58:41,796 INFO L78 Accepts]: Start accepts. Automaton has 1442 states and 2358 transitions. Word has length 122 [2024-12-01 22:58:41,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 22:58:41,796 INFO L471 AbstractCegarLoop]: Abstraction has 1442 states and 2358 transitions. [2024-12-01 22:58:41,796 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) [2024-12-01 22:58:41,796 INFO L276 IsEmpty]: Start isEmpty. Operand 1442 states and 2358 transitions. [2024-12-01 22:58:41,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-12-01 22:58:41,803 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 22:58:41,803 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] [2024-12-01 22:58:41,813 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d873a23-466d-4753-825c-4e839f102054/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-01 22:58:42,003 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d873a23-466d-4753-825c-4e839f102054/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-12-01 22:58:42,003 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 22:58:42,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 22:58:42,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1528991517, now seen corresponding path program 1 times [2024-12-01 22:58:42,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 22:58:42,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22382035] [2024-12-01 22:58:42,004 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 22:58:42,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 22:58:42,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 22:58:42,203 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-12-01 22:58:42,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 22:58:42,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22382035] [2024-12-01 22:58:42,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22382035] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 22:58:42,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 22:58:42,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-01 22:58:42,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479485425] [2024-12-01 22:58:42,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 22:58:42,204 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-01 22:58:42,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 22:58:42,204 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-01 22:58:42,204 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-01 22:58:42,205 INFO L87 Difference]: Start difference. First operand 1442 states and 2358 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) [2024-12-01 22:58:42,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 22:58:42,880 INFO L93 Difference]: Finished difference Result 4262 states and 7075 transitions. [2024-12-01 22:58:42,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-01 22:58:42,881 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 [2024-12-01 22:58:42,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 22:58:42,908 INFO L225 Difference]: With dead ends: 4262 [2024-12-01 22:58:42,908 INFO L226 Difference]: Without dead ends: 2838 [2024-12-01 22:58:42,921 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 [2024-12-01 22:58:42,921 INFO L435 NwaCegarLoop]: 987 mSDtfsCounter, 873 mSDsluCounter, 3556 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 884 SdHoareTripleChecker+Valid, 4543 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-01 22:58:42,922 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [884 Valid, 4543 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-01 22:58:42,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2838 states. [2024-12-01 22:58:43,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2838 to 2791. [2024-12-01 22:58:43,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2791 states, 2137 states have (on average 1.6448291998128217) internal successors, (3515), 2225 states have internal predecessors, (3515), 521 states have call successors, (521), 130 states have call predecessors, (521), 132 states have return successors, (597), 513 states have call predecessors, (597), 517 states have call successors, (597) [2024-12-01 22:58:43,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2791 states to 2791 states and 4633 transitions. [2024-12-01 22:58:43,126 INFO L78 Accepts]: Start accepts. Automaton has 2791 states and 4633 transitions. Word has length 124 [2024-12-01 22:58:43,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 22:58:43,126 INFO L471 AbstractCegarLoop]: Abstraction has 2791 states and 4633 transitions. [2024-12-01 22:58:43,127 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) [2024-12-01 22:58:43,127 INFO L276 IsEmpty]: Start isEmpty. Operand 2791 states and 4633 transitions. [2024-12-01 22:58:43,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-12-01 22:58:43,134 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 22:58:43,134 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] [2024-12-01 22:58:43,134 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-01 22:58:43,135 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 22:58:43,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 22:58:43,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1063184503, now seen corresponding path program 1 times [2024-12-01 22:58:43,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 22:58:43,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471934970] [2024-12-01 22:58:43,135 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 22:58:43,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 22:58:43,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 22:58:43,270 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-12-01 22:58:43,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 22:58:43,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471934970] [2024-12-01 22:58:43,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471934970] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 22:58:43,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 22:58:43,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-01 22:58:43,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079925] [2024-12-01 22:58:43,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 22:58:43,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-01 22:58:43,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 22:58:43,272 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-01 22:58:43,272 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-01 22:58:43,273 INFO L87 Difference]: Start difference. First operand 2791 states and 4633 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-01 22:58:43,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 22:58:43,538 INFO L93 Difference]: Finished difference Result 5578 states and 9330 transitions. [2024-12-01 22:58:43,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-01 22:58:43,539 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 125 [2024-12-01 22:58:43,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 22:58:43,566 INFO L225 Difference]: With dead ends: 5578 [2024-12-01 22:58:43,566 INFO L226 Difference]: Without dead ends: 2805 [2024-12-01 22:58:43,590 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 [2024-12-01 22:58:43,590 INFO L435 NwaCegarLoop]: 867 mSDtfsCounter, 12 mSDsluCounter, 1709 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2576 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 [2024-12-01 22:58:43,591 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2576 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 22:58:43,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2805 states. [2024-12-01 22:58:43,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2805 to 2795. [2024-12-01 22:58:43,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2795 states, 2140 states have (on average 1.6434579439252337) internal successors, (3517), 2228 states have internal predecessors, (3517), 521 states have call successors, (521), 132 states have call predecessors, (521), 133 states have return successors, (588), 512 states have call predecessors, (588), 517 states have call successors, (588) [2024-12-01 22:58:43,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2795 states to 2795 states and 4626 transitions. [2024-12-01 22:58:43,791 INFO L78 Accepts]: Start accepts. Automaton has 2795 states and 4626 transitions. Word has length 125 [2024-12-01 22:58:43,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 22:58:43,791 INFO L471 AbstractCegarLoop]: Abstraction has 2795 states and 4626 transitions. [2024-12-01 22:58:43,792 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-01 22:58:43,792 INFO L276 IsEmpty]: Start isEmpty. Operand 2795 states and 4626 transitions. [2024-12-01 22:58:43,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-12-01 22:58:43,799 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 22:58:43,799 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] [2024-12-01 22:58:43,800 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-01 22:58:43,800 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 22:58:43,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 22:58:43,800 INFO L85 PathProgramCache]: Analyzing trace with hash -120085253, now seen corresponding path program 1 times [2024-12-01 22:58:43,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 22:58:43,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232626895] [2024-12-01 22:58:43,801 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 22:58:43,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 22:58:43,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 22:58:44,068 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-12-01 22:58:44,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 22:58:44,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232626895] [2024-12-01 22:58:44,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232626895] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 22:58:44,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972911850] [2024-12-01 22:58:44,069 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 22:58:44,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 22:58:44,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d873a23-466d-4753-825c-4e839f102054/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 22:58:44,071 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d873a23-466d-4753-825c-4e839f102054/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 22:58:44,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d873a23-466d-4753-825c-4e839f102054/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-01 22:58:44,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 22:58:44,424 INFO L256 TraceCheckSpWp]: Trace formula consists of 1661 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-01 22:58:44,429 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 22:58:44,561 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-01 22:58:44,562 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 22:58:44,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1972911850] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 22:58:44,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 22:58:44,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-12-01 22:58:44,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286645264] [2024-12-01 22:58:44,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 22:58:44,563 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-01 22:58:44,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 22:58:44,563 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-01 22:58:44,563 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-01 22:58:44,563 INFO L87 Difference]: Start difference. First operand 2795 states and 4626 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) [2024-12-01 22:58:44,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 22:58:44,880 INFO L93 Difference]: Finished difference Result 8095 states and 13583 transitions. [2024-12-01 22:58:44,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-01 22:58:44,880 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 [2024-12-01 22:58:44,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 22:58:44,918 INFO L225 Difference]: With dead ends: 8095 [2024-12-01 22:58:44,918 INFO L226 Difference]: Without dead ends: 5319 [2024-12-01 22:58:44,932 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 [2024-12-01 22:58:44,933 INFO L435 NwaCegarLoop]: 854 mSDtfsCounter, 719 mSDsluCounter, 788 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 719 SdHoareTripleChecker+Valid, 1642 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 22:58:44,933 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [719 Valid, 1642 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 22:58:44,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5319 states. [2024-12-01 22:58:45,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5319 to 5282. [2024-12-01 22:58:45,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5282 states, 4030 states have (on average 1.6109181141439206) internal successors, (6492), 4204 states have internal predecessors, (6492), 990 states have call successors, (990), 258 states have call predecessors, (990), 261 states have return successors, (1221), 975 states have call predecessors, (1221), 984 states have call successors, (1221) [2024-12-01 22:58:45,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5282 states to 5282 states and 8703 transitions. [2024-12-01 22:58:45,192 INFO L78 Accepts]: Start accepts. Automaton has 5282 states and 8703 transitions. Word has length 125 [2024-12-01 22:58:45,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 22:58:45,192 INFO L471 AbstractCegarLoop]: Abstraction has 5282 states and 8703 transitions. [2024-12-01 22:58:45,192 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) [2024-12-01 22:58:45,192 INFO L276 IsEmpty]: Start isEmpty. Operand 5282 states and 8703 transitions. [2024-12-01 22:58:45,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-12-01 22:58:45,198 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 22:58:45,198 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] [2024-12-01 22:58:45,208 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d873a23-466d-4753-825c-4e839f102054/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-01 22:58:45,398 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d873a23-466d-4753-825c-4e839f102054/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-12-01 22:58:45,399 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 22:58:45,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 22:58:45,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1466870307, now seen corresponding path program 1 times [2024-12-01 22:58:45,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 22:58:45,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032929955] [2024-12-01 22:58:45,399 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 22:58:45,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 22:58:45,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 22:58:45,615 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-12-01 22:58:45,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 22:58:45,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032929955] [2024-12-01 22:58:45,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032929955] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 22:58:45,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [213944958] [2024-12-01 22:58:45,616 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 22:58:45,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 22:58:45,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d873a23-466d-4753-825c-4e839f102054/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 22:58:45,618 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d873a23-466d-4753-825c-4e839f102054/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 22:58:45,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d873a23-466d-4753-825c-4e839f102054/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-01 22:58:45,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 22:58:45,947 INFO L256 TraceCheckSpWp]: Trace formula consists of 1654 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-01 22:58:45,952 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 22:58:45,969 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-12-01 22:58:45,969 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 22:58:45,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [213944958] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 22:58:45,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 22:58:45,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-12-01 22:58:45,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074627592] [2024-12-01 22:58:45,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 22:58:45,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-01 22:58:45,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 22:58:45,970 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-01 22:58:45,970 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-12-01 22:58:45,971 INFO L87 Difference]: Start difference. First operand 5282 states and 8703 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) [2024-12-01 22:58:46,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 22:58:46,428 INFO L93 Difference]: Finished difference Result 15732 states and 26242 transitions. [2024-12-01 22:58:46,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-01 22:58:46,429 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 [2024-12-01 22:58:46,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 22:58:46,519 INFO L225 Difference]: With dead ends: 15732 [2024-12-01 22:58:46,519 INFO L226 Difference]: Without dead ends: 10471 [2024-12-01 22:58:46,548 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 [2024-12-01 22:58:46,549 INFO L435 NwaCegarLoop]: 942 mSDtfsCounter, 869 mSDsluCounter, 860 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 869 SdHoareTripleChecker+Valid, 1802 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 [2024-12-01 22:58:46,549 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [869 Valid, 1802 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 22:58:46,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10471 states. [2024-12-01 22:58:47,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10471 to 10368. [2024-12-01 22:58:47,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10368 states, 7936 states have (on average 1.614289314516129) internal successors, (12811), 8264 states have internal predecessors, (12811), 1920 states have call successors, (1920), 498 states have call predecessors, (1920), 511 states have return successors, (2436), 1911 states have call predecessors, (2436), 1910 states have call successors, (2436) [2024-12-01 22:58:47,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10368 states to 10368 states and 17167 transitions. [2024-12-01 22:58:47,160 INFO L78 Accepts]: Start accepts. Automaton has 10368 states and 17167 transitions. Word has length 127 [2024-12-01 22:58:47,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 22:58:47,161 INFO L471 AbstractCegarLoop]: Abstraction has 10368 states and 17167 transitions. [2024-12-01 22:58:47,162 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) [2024-12-01 22:58:47,162 INFO L276 IsEmpty]: Start isEmpty. Operand 10368 states and 17167 transitions. [2024-12-01 22:58:47,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-12-01 22:58:47,169 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 22:58:47,169 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] [2024-12-01 22:58:47,181 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d873a23-466d-4753-825c-4e839f102054/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-01 22:58:47,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d873a23-466d-4753-825c-4e839f102054/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-12-01 22:58:47,370 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 22:58:47,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 22:58:47,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1816979739, now seen corresponding path program 1 times [2024-12-01 22:58:47,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 22:58:47,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783932485] [2024-12-01 22:58:47,371 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 22:58:47,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 22:58:47,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 22:58:47,631 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-12-01 22:58:47,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 22:58:47,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783932485] [2024-12-01 22:58:47,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783932485] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 22:58:47,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395437235] [2024-12-01 22:58:47,631 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 22:58:47,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 22:58:47,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d873a23-466d-4753-825c-4e839f102054/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 22:58:47,634 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d873a23-466d-4753-825c-4e839f102054/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 22:58:47,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d873a23-466d-4753-825c-4e839f102054/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-01 22:58:48,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 22:58:48,043 INFO L256 TraceCheckSpWp]: Trace formula consists of 1653 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-12-01 22:58:48,048 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 22:58:48,143 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-01 22:58:48,143 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 22:58:48,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [395437235] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 22:58:48,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 22:58:48,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2024-12-01 22:58:48,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479188660] [2024-12-01 22:58:48,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 22:58:48,144 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-01 22:58:48,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 22:58:48,145 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-01 22:58:48,145 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-12-01 22:58:48,145 INFO L87 Difference]: Start difference. First operand 10368 states and 17167 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) [2024-12-01 22:58:49,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 22:58:49,000 INFO L93 Difference]: Finished difference Result 19593 states and 32522 transitions. [2024-12-01 22:58:49,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-01 22:58:49,001 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 [2024-12-01 22:58:49,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 22:58:49,043 INFO L225 Difference]: With dead ends: 19593 [2024-12-01 22:58:49,043 INFO L226 Difference]: Without dead ends: 9243 [2024-12-01 22:58:49,079 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 [2024-12-01 22:58:49,079 INFO L435 NwaCegarLoop]: 924 mSDtfsCounter, 743 mSDsluCounter, 3329 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 747 SdHoareTripleChecker+Valid, 4253 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-01 22:58:49,080 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [747 Valid, 4253 Invalid, 563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-01 22:58:49,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9243 states. [2024-12-01 22:58:49,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9243 to 9221. [2024-12-01 22:58:49,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9221 states, 7077 states have (on average 1.6011021619330226) internal successors, (11331), 7352 states have internal predecessors, (11331), 1678 states have call successors, (1678), 454 states have call predecessors, (1678), 465 states have return successors, (2112), 1670 states have call predecessors, (2112), 1668 states have call successors, (2112) [2024-12-01 22:58:49,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9221 states to 9221 states and 15121 transitions. [2024-12-01 22:58:49,418 INFO L78 Accepts]: Start accepts. Automaton has 9221 states and 15121 transitions. Word has length 127 [2024-12-01 22:58:49,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 22:58:49,419 INFO L471 AbstractCegarLoop]: Abstraction has 9221 states and 15121 transitions. [2024-12-01 22:58:49,419 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) [2024-12-01 22:58:49,419 INFO L276 IsEmpty]: Start isEmpty. Operand 9221 states and 15121 transitions. [2024-12-01 22:58:49,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-12-01 22:58:49,423 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 22:58:49,424 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] [2024-12-01 22:58:49,432 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d873a23-466d-4753-825c-4e839f102054/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-01 22:58:49,624 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d873a23-466d-4753-825c-4e839f102054/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-12-01 22:58:49,624 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 22:58:49,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 22:58:49,625 INFO L85 PathProgramCache]: Analyzing trace with hash 262034279, now seen corresponding path program 1 times [2024-12-01 22:58:49,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 22:58:49,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934739480] [2024-12-01 22:58:49,625 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 22:58:49,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 22:58:49,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 22:58:49,792 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-12-01 22:58:49,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 22:58:49,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934739480] [2024-12-01 22:58:49,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934739480] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 22:58:49,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 22:58:49,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-01 22:58:49,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661715764] [2024-12-01 22:58:49,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 22:58:49,793 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-01 22:58:49,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 22:58:49,794 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-01 22:58:49,794 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-01 22:58:49,794 INFO L87 Difference]: Start difference. First operand 9221 states and 15121 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) [2024-12-01 22:58:50,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 22:58:50,672 INFO L93 Difference]: Finished difference Result 27609 states and 46461 transitions. [2024-12-01 22:58:50,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-01 22:58:50,672 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 [2024-12-01 22:58:50,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 22:58:50,742 INFO L225 Difference]: With dead ends: 27609 [2024-12-01 22:58:50,742 INFO L226 Difference]: Without dead ends: 18406 [2024-12-01 22:58:50,776 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 [2024-12-01 22:58:50,777 INFO L435 NwaCegarLoop]: 953 mSDtfsCounter, 867 mSDsluCounter, 3461 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 875 SdHoareTripleChecker+Valid, 4414 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-01 22:58:50,777 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [875 Valid, 4414 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-01 22:58:50,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18406 states. [2024-12-01 22:58:51,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18406 to 18305. [2024-12-01 22:58:51,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18305 states, 14060 states have (on average 1.5975817923186344) internal successors, (22462), 14601 states have internal predecessors, (22462), 3311 states have call successors, (3311), 902 states have call predecessors, (3311), 933 states have return successors, (4825), 3313 states have call predecessors, (4825), 3293 states have call successors, (4825) [2024-12-01 22:58:51,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18305 states to 18305 states and 30598 transitions. [2024-12-01 22:58:51,519 INFO L78 Accepts]: Start accepts. Automaton has 18305 states and 30598 transitions. Word has length 135 [2024-12-01 22:58:51,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 22:58:51,520 INFO L471 AbstractCegarLoop]: Abstraction has 18305 states and 30598 transitions. [2024-12-01 22:58:51,520 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) [2024-12-01 22:58:51,520 INFO L276 IsEmpty]: Start isEmpty. Operand 18305 states and 30598 transitions. [2024-12-01 22:58:51,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-12-01 22:58:51,526 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 22:58:51,526 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] [2024-12-01 22:58:51,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-12-01 22:58:51,526 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 22:58:51,527 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 22:58:51,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1173853575, now seen corresponding path program 1 times [2024-12-01 22:58:51,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 22:58:51,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380292331] [2024-12-01 22:58:51,527 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 22:58:51,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 22:58:51,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 22:58:51,677 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-12-01 22:58:51,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 22:58:51,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380292331] [2024-12-01 22:58:51,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380292331] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 22:58:51,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 22:58:51,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-01 22:58:51,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127039516] [2024-12-01 22:58:51,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 22:58:51,678 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-01 22:58:51,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 22:58:51,679 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-01 22:58:51,679 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-01 22:58:51,679 INFO L87 Difference]: Start difference. First operand 18305 states and 30598 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) [2024-12-01 22:58:52,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 22:58:52,826 INFO L93 Difference]: Finished difference Result 36736 states and 62411 transitions. [2024-12-01 22:58:52,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-01 22:58:52,827 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 [2024-12-01 22:58:52,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 22:58:53,008 INFO L225 Difference]: With dead ends: 36736 [2024-12-01 22:58:53,008 INFO L226 Difference]: Without dead ends: 18449 [2024-12-01 22:58:53,086 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 [2024-12-01 22:58:53,086 INFO L435 NwaCegarLoop]: 864 mSDtfsCounter, 12 mSDsluCounter, 1706 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2570 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 [2024-12-01 22:58:53,086 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2570 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 22:58:53,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18449 states. [2024-12-01 22:58:53,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18449 to 18385. [2024-12-01 22:58:53,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18385 states, 14132 states have (on average 1.595103311633173) internal successors, (22542), 14657 states have internal predecessors, (22542), 3311 states have call successors, (3311), 934 states have call predecessors, (3311), 941 states have return successors, (4785), 3305 states have call predecessors, (4785), 3293 states have call successors, (4785) [2024-12-01 22:58:53,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18385 states to 18385 states and 30638 transitions. [2024-12-01 22:58:53,838 INFO L78 Accepts]: Start accepts. Automaton has 18385 states and 30638 transitions. Word has length 136 [2024-12-01 22:58:53,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 22:58:53,838 INFO L471 AbstractCegarLoop]: Abstraction has 18385 states and 30638 transitions. [2024-12-01 22:58:53,838 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) [2024-12-01 22:58:53,838 INFO L276 IsEmpty]: Start isEmpty. Operand 18385 states and 30638 transitions. [2024-12-01 22:58:53,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-12-01 22:58:53,843 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 22:58:53,843 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] [2024-12-01 22:58:53,843 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-12-01 22:58:53,843 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 22:58:53,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 22:58:53,844 INFO L85 PathProgramCache]: Analyzing trace with hash 787597031, now seen corresponding path program 1 times [2024-12-01 22:58:53,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 22:58:53,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545377080] [2024-12-01 22:58:53,844 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 22:58:53,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 22:58:53,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 22:58:54,003 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-12-01 22:58:54,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 22:58:54,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545377080] [2024-12-01 22:58:54,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545377080] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 22:58:54,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 22:58:54,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-01 22:58:54,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67492809] [2024-12-01 22:58:54,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 22:58:54,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-01 22:58:54,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 22:58:54,005 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-01 22:58:54,005 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-01 22:58:54,005 INFO L87 Difference]: Start difference. First operand 18385 states and 30638 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) [2024-12-01 22:58:55,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 22:58:55,531 INFO L93 Difference]: Finished difference Result 55241 states and 95558 transitions. [2024-12-01 22:58:55,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-01 22:58:55,532 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 [2024-12-01 22:58:55,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 22:58:55,796 INFO L225 Difference]: With dead ends: 55241 [2024-12-01 22:58:55,796 INFO L226 Difference]: Without dead ends: 36874 [2024-12-01 22:58:55,963 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 [2024-12-01 22:58:55,964 INFO L435 NwaCegarLoop]: 944 mSDtfsCounter, 862 mSDsluCounter, 3441 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 868 SdHoareTripleChecker+Valid, 4385 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-01 22:58:55,964 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [868 Valid, 4385 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-01 22:58:55,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36874 states. [2024-12-01 22:58:57,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36874 to 36709. [2024-12-01 22:58:57,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36709 states, 28227 states have (on average 1.5916321252701315) internal successors, (44927), 29268 states have internal predecessors, (44927), 6588 states have call successors, (6588), 1862 states have call predecessors, (6588), 1893 states have return successors, (11427), 6602 states have call predecessors, (11427), 6554 states have call successors, (11427) [2024-12-01 22:58:58,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36709 states to 36709 states and 62942 transitions. [2024-12-01 22:58:58,036 INFO L78 Accepts]: Start accepts. Automaton has 36709 states and 62942 transitions. Word has length 145 [2024-12-01 22:58:58,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 22:58:58,036 INFO L471 AbstractCegarLoop]: Abstraction has 36709 states and 62942 transitions. [2024-12-01 22:58:58,036 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) [2024-12-01 22:58:58,036 INFO L276 IsEmpty]: Start isEmpty. Operand 36709 states and 62942 transitions. [2024-12-01 22:58:58,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-12-01 22:58:58,040 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 22:58:58,040 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] [2024-12-01 22:58:58,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-12-01 22:58:58,040 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 22:58:58,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 22:58:58,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1486425167, now seen corresponding path program 1 times [2024-12-01 22:58:58,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 22:58:58,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998912228] [2024-12-01 22:58:58,041 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 22:58:58,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 22:58:58,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 22:58:58,147 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-12-01 22:58:58,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 22:58:58,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998912228] [2024-12-01 22:58:58,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998912228] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 22:58:58,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 22:58:58,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-01 22:58:58,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780041743] [2024-12-01 22:58:58,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 22:58:58,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-01 22:58:58,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 22:58:58,149 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-01 22:58:58,149 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-01 22:58:58,149 INFO L87 Difference]: Start difference. First operand 36709 states and 62942 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) [2024-12-01 22:58:59,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 22:58:59,594 INFO L93 Difference]: Finished difference Result 73688 states and 129540 transitions. [2024-12-01 22:58:59,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-01 22:58:59,595 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 [2024-12-01 22:58:59,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 22:58:59,763 INFO L225 Difference]: With dead ends: 73688 [2024-12-01 22:58:59,763 INFO L226 Difference]: Without dead ends: 36997 [2024-12-01 22:58:59,971 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 [2024-12-01 22:58:59,972 INFO L435 NwaCegarLoop]: 864 mSDtfsCounter, 11 mSDsluCounter, 1706 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2570 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 [2024-12-01 22:58:59,972 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2570 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 22:58:59,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36997 states. [2024-12-01 22:59:00,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36997 to 36869. [2024-12-01 22:59:00,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36869 states, 28371 states have (on average 1.5891931902294596) internal successors, (45087), 29412 states have internal predecessors, (45087), 6588 states have call successors, (6588), 1894 states have call predecessors, (6588), 1909 states have return successors, (11371), 6586 states have call predecessors, (11371), 6554 states have call successors, (11371) [2024-12-01 22:59:01,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36869 states to 36869 states and 63046 transitions. [2024-12-01 22:59:01,267 INFO L78 Accepts]: Start accepts. Automaton has 36869 states and 63046 transitions. Word has length 146 [2024-12-01 22:59:01,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 22:59:01,268 INFO L471 AbstractCegarLoop]: Abstraction has 36869 states and 63046 transitions. [2024-12-01 22:59:01,268 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) [2024-12-01 22:59:01,268 INFO L276 IsEmpty]: Start isEmpty. Operand 36869 states and 63046 transitions. [2024-12-01 22:59:01,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-12-01 22:59:01,272 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 22:59:01,273 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] [2024-12-01 22:59:01,273 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-12-01 22:59:01,273 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 22:59:01,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 22:59:01,273 INFO L85 PathProgramCache]: Analyzing trace with hash -614148515, now seen corresponding path program 1 times [2024-12-01 22:59:01,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 22:59:01,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827690537] [2024-12-01 22:59:01,274 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 22:59:01,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 22:59:01,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 22:59:01,438 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-12-01 22:59:01,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 22:59:01,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827690537] [2024-12-01 22:59:01,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827690537] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 22:59:01,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 22:59:01,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-01 22:59:01,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032956027] [2024-12-01 22:59:01,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 22:59:01,439 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-01 22:59:01,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 22:59:01,440 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-01 22:59:01,440 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-01 22:59:01,440 INFO L87 Difference]: Start difference. First operand 36869 states and 63046 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) [2024-12-01 22:59:04,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 22:59:04,929 INFO L93 Difference]: Finished difference Result 110929 states and 200578 transitions. [2024-12-01 22:59:04,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-01 22:59:04,930 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 [2024-12-01 22:59:04,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 22:59:05,331 INFO L225 Difference]: With dead ends: 110929 [2024-12-01 22:59:05,331 INFO L226 Difference]: Without dead ends: 74078 [2024-12-01 22:59:05,599 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 [2024-12-01 22:59:05,601 INFO L435 NwaCegarLoop]: 976 mSDtfsCounter, 859 mSDsluCounter, 3548 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 863 SdHoareTripleChecker+Valid, 4524 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-01 22:59:05,601 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [863 Valid, 4524 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-01 22:59:05,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74078 states. [2024-12-01 22:59:07,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74078 to 73785. [2024-12-01 22:59:07,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73785 states, 56786 states have (on average 1.5865882435811645) internal successors, (90096), 58859 states have internal predecessors, (90096), 13153 states have call successors, (13153), 3782 states have call predecessors, (13153), 3845 states have return successors, (28385), 13191 states have call predecessors, (28385), 13087 states have call successors, (28385) [2024-12-01 22:59:08,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73785 states to 73785 states and 131634 transitions. [2024-12-01 22:59:08,488 INFO L78 Accepts]: Start accepts. Automaton has 73785 states and 131634 transitions. Word has length 156 [2024-12-01 22:59:08,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 22:59:08,489 INFO L471 AbstractCegarLoop]: Abstraction has 73785 states and 131634 transitions. [2024-12-01 22:59:08,489 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) [2024-12-01 22:59:08,489 INFO L276 IsEmpty]: Start isEmpty. Operand 73785 states and 131634 transitions. [2024-12-01 22:59:08,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-12-01 22:59:08,495 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 22:59:08,495 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] [2024-12-01 22:59:08,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-12-01 22:59:08,495 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 22:59:08,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 22:59:08,495 INFO L85 PathProgramCache]: Analyzing trace with hash -2112985631, now seen corresponding path program 1 times [2024-12-01 22:59:08,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 22:59:08,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470726584] [2024-12-01 22:59:08,496 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 22:59:08,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 22:59:08,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 22:59:08,615 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-12-01 22:59:08,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 22:59:08,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470726584] [2024-12-01 22:59:08,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470726584] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 22:59:08,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 22:59:08,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-01 22:59:08,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255837502] [2024-12-01 22:59:08,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 22:59:08,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-01 22:59:08,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 22:59:08,617 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-01 22:59:08,617 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-01 22:59:08,617 INFO L87 Difference]: Start difference. First operand 73785 states and 131634 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) [2024-12-01 22:59:13,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 22:59:13,293 INFO L93 Difference]: Finished difference Result 148192 states and 274705 transitions. [2024-12-01 22:59:13,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-01 22:59:13,294 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 [2024-12-01 22:59:13,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 22:59:13,731 INFO L225 Difference]: With dead ends: 148192 [2024-12-01 22:59:13,732 INFO L226 Difference]: Without dead ends: 74425 [2024-12-01 22:59:14,238 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 [2024-12-01 22:59:14,238 INFO L435 NwaCegarLoop]: 864 mSDtfsCounter, 10 mSDsluCounter, 1706 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2570 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 22:59:14,238 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2570 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 22:59:14,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74425 states. [2024-12-01 22:59:16,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74425 to 74169. [2024-12-01 22:59:16,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74169 states, 57138 states have (on average 1.5835346004410376) internal successors, (90480), 59211 states have internal predecessors, (90480), 13153 states have call successors, (13153), 3846 states have call predecessors, (13153), 3877 states have return successors, (28321), 13159 states have call predecessors, (28321), 13087 states have call successors, (28321) [2024-12-01 22:59:17,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74169 states to 74169 states and 131954 transitions. [2024-12-01 22:59:17,854 INFO L78 Accepts]: Start accepts. Automaton has 74169 states and 131954 transitions. Word has length 157 [2024-12-01 22:59:17,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 22:59:17,855 INFO L471 AbstractCegarLoop]: Abstraction has 74169 states and 131954 transitions. [2024-12-01 22:59:17,855 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) [2024-12-01 22:59:17,855 INFO L276 IsEmpty]: Start isEmpty. Operand 74169 states and 131954 transitions. [2024-12-01 22:59:17,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-12-01 22:59:17,864 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 22:59:17,864 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] [2024-12-01 22:59:17,864 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-12-01 22:59:17,865 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 22:59:17,865 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 22:59:17,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1900821555, now seen corresponding path program 1 times [2024-12-01 22:59:17,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 22:59:17,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426812028] [2024-12-01 22:59:17,865 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 22:59:17,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 22:59:17,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 22:59:18,157 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-12-01 22:59:18,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 22:59:18,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426812028] [2024-12-01 22:59:18,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426812028] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 22:59:18,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595678055] [2024-12-01 22:59:18,158 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 22:59:18,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 22:59:18,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d873a23-466d-4753-825c-4e839f102054/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 22:59:18,160 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d873a23-466d-4753-825c-4e839f102054/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 22:59:18,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d873a23-466d-4753-825c-4e839f102054/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-01 22:59:18,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 22:59:18,448 INFO L256 TraceCheckSpWp]: Trace formula consists of 1749 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-12-01 22:59:18,453 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 22:59:18,572 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-12-01 22:59:18,572 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 22:59:18,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1595678055] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 22:59:18,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 22:59:18,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2024-12-01 22:59:18,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517828131] [2024-12-01 22:59:18,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 22:59:18,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-01 22:59:18,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 22:59:18,574 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-01 22:59:18,574 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-12-01 22:59:18,574 INFO L87 Difference]: Start difference. First operand 74169 states and 131954 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) [2024-12-01 22:59:24,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 22:59:24,329 INFO L93 Difference]: Finished difference Result 181091 states and 335811 transitions. [2024-12-01 22:59:24,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-01 22:59:24,330 INFO L78 Accepts]: Start accepts. Automaton has 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) Word has length 168 [2024-12-01 22:59:24,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 22:59:25,168 INFO L225 Difference]: With dead ends: 181091 [2024-12-01 22:59:25,168 INFO L226 Difference]: Without dead ends: 106892 [2024-12-01 22:59:25,674 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-12-01 22:59:25,674 INFO L435 NwaCegarLoop]: 875 mSDtfsCounter, 866 mSDsluCounter, 3064 mSDsCounter, 0 mSdLazyCounter, 623 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 873 SdHoareTripleChecker+Valid, 3939 SdHoareTripleChecker+Invalid, 668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-12-01 22:59:25,674 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [873 Valid, 3939 Invalid, 668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 623 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-12-01 22:59:25,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106892 states. [2024-12-01 22:59:29,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106892 to 106684. [2024-12-01 22:59:29,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106684 states, 82373 states have (on average 1.5660471270926153) internal successors, (129000), 85142 states have internal predecessors, (129000), 18517 states have call successors, (18517), 5794 states have call predecessors, (18517), 5793 states have return successors, (42077), 18395 states have call predecessors, (42077), 18435 states have call successors, (42077) [2024-12-01 22:59:30,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106684 states to 106684 states and 189594 transitions. [2024-12-01 22:59:30,613 INFO L78 Accepts]: Start accepts. Automaton has 106684 states and 189594 transitions. Word has length 168 [2024-12-01 22:59:30,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 22:59:30,613 INFO L471 AbstractCegarLoop]: Abstraction has 106684 states and 189594 transitions. [2024-12-01 22:59:30,614 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2024-12-01 22:59:30,614 INFO L276 IsEmpty]: Start isEmpty. Operand 106684 states and 189594 transitions. [2024-12-01 22:59:30,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2024-12-01 22:59:30,627 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 22:59:30,627 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-12-01 22:59:30,636 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d873a23-466d-4753-825c-4e839f102054/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-01 22:59:30,828 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d873a23-466d-4753-825c-4e839f102054/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-12-01 22:59:30,828 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 22:59:30,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 22:59:30,829 INFO L85 PathProgramCache]: Analyzing trace with hash -910647119, now seen corresponding path program 1 times [2024-12-01 22:59:30,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 22:59:30,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893000752] [2024-12-01 22:59:30,829 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 22:59:30,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 22:59:30,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 22:59:31,098 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 24 proven. 4 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2024-12-01 22:59:31,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 22:59:31,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893000752] [2024-12-01 22:59:31,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893000752] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 22:59:31,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [913953277] [2024-12-01 22:59:31,099 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 22:59:31,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 22:59:31,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d873a23-466d-4753-825c-4e839f102054/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 22:59:31,100 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d873a23-466d-4753-825c-4e839f102054/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 22:59:31,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d873a23-466d-4753-825c-4e839f102054/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-01 22:59:31,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 22:59:31,433 INFO L256 TraceCheckSpWp]: Trace formula consists of 2072 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-12-01 22:59:31,439 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 22:59:31,574 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-12-01 22:59:31,574 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 22:59:31,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [913953277] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 22:59:31,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 22:59:31,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2024-12-01 22:59:31,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436750048] [2024-12-01 22:59:31,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 22:59:31,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-01 22:59:31,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 22:59:31,576 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-01 22:59:31,576 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-12-01 22:59:31,576 INFO L87 Difference]: Start difference. First operand 106684 states and 189594 transitions. Second operand has 8 states, 8 states have (on average 15.625) internal successors, (125), 7 states have internal predecessors, (125), 5 states have call successors, (27), 4 states have call predecessors, (27), 5 states have return successors, (25), 6 states have call predecessors, (25), 5 states have call successors, (25) [2024-12-01 22:59:44,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 22:59:44,320 INFO L93 Difference]: Finished difference Result 290910 states and 571078 transitions. [2024-12-01 22:59:44,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-01 22:59:44,321 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.625) internal successors, (125), 7 states have internal predecessors, (125), 5 states have call successors, (27), 4 states have call predecessors, (27), 5 states have return successors, (25), 6 states have call predecessors, (25), 5 states have call successors, (25) Word has length 201 [2024-12-01 22:59:44,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 22:59:46,388 INFO L225 Difference]: With dead ends: 290910 [2024-12-01 22:59:46,388 INFO L226 Difference]: Without dead ends: 178404 [2024-12-01 22:59:47,555 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=427, Unknown=0, NotChecked=0, Total=506 [2024-12-01 22:59:47,555 INFO L435 NwaCegarLoop]: 480 mSDtfsCounter, 2381 mSDsluCounter, 1818 mSDsCounter, 0 mSdLazyCounter, 4771 mSolverCounterSat, 838 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2482 SdHoareTripleChecker+Valid, 2298 SdHoareTripleChecker+Invalid, 5609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 838 IncrementalHoareTripleChecker+Valid, 4771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-12-01 22:59:47,555 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2482 Valid, 2298 Invalid, 5609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [838 Valid, 4771 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-12-01 22:59:47,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178404 states. [2024-12-01 22:59:54,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178404 to 160460. [2024-12-01 22:59:54,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160460 states, 123752 states have (on average 1.5589485422457818) internal successors, (192923), 127920 states have internal predecessors, (192923), 27868 states have call successors, (27868), 8408 states have call predecessors, (27868), 8839 states have return successors, (74264), 27775 states have call predecessors, (74264), 27754 states have call successors, (74264) [2024-12-01 22:59:56,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160460 states to 160460 states and 295055 transitions. [2024-12-01 22:59:56,891 INFO L78 Accepts]: Start accepts. Automaton has 160460 states and 295055 transitions. Word has length 201 [2024-12-01 22:59:56,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 22:59:56,891 INFO L471 AbstractCegarLoop]: Abstraction has 160460 states and 295055 transitions. [2024-12-01 22:59:56,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.625) internal successors, (125), 7 states have internal predecessors, (125), 5 states have call successors, (27), 4 states have call predecessors, (27), 5 states have return successors, (25), 6 states have call predecessors, (25), 5 states have call successors, (25) [2024-12-01 22:59:56,891 INFO L276 IsEmpty]: Start isEmpty. Operand 160460 states and 295055 transitions. [2024-12-01 22:59:56,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2024-12-01 22:59:56,902 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 22:59:56,902 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-12-01 22:59:56,911 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d873a23-466d-4753-825c-4e839f102054/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-01 22:59:57,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d873a23-466d-4753-825c-4e839f102054/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-12-01 22:59:57,102 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 22:59:57,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 22:59:57,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1878226467, now seen corresponding path program 1 times [2024-12-01 22:59:57,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 22:59:57,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867087652] [2024-12-01 22:59:57,103 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 22:59:57,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 22:59:57,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 22:59:57,301 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 23 proven. 18 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2024-12-01 22:59:57,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 22:59:57,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867087652] [2024-12-01 22:59:57,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867087652] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 22:59:57,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392129427] [2024-12-01 22:59:57,302 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 22:59:57,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 22:59:57,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d873a23-466d-4753-825c-4e839f102054/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 22:59:57,303 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d873a23-466d-4753-825c-4e839f102054/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 22:59:57,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d873a23-466d-4753-825c-4e839f102054/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-01 22:59:57,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 22:59:57,622 INFO L256 TraceCheckSpWp]: Trace formula consists of 2161 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-01 22:59:57,626 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 22:59:57,754 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-12-01 22:59:57,754 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 22:59:57,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1392129427] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 22:59:57,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 22:59:57,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 15 [2024-12-01 22:59:57,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098901628] [2024-12-01 22:59:57,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 22:59:57,754 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-01 22:59:57,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 22:59:57,755 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-01 22:59:57,755 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2024-12-01 22:59:57,755 INFO L87 Difference]: Start difference. First operand 160460 states and 295055 transitions. Second operand has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2024-12-01 23:00:08,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:00:08,617 INFO L93 Difference]: Finished difference Result 325510 states and 643400 transitions. [2024-12-01 23:00:08,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-01 23:00:08,617 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 235 [2024-12-01 23:00:08,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:00:09,982 INFO L225 Difference]: With dead ends: 325510 [2024-12-01 23:00:09,982 INFO L226 Difference]: Without dead ends: 165068 [2024-12-01 23:00:11,813 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2024-12-01 23:00:11,814 INFO L435 NwaCegarLoop]: 866 mSDtfsCounter, 796 mSDsluCounter, 1312 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 800 SdHoareTripleChecker+Valid, 2178 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-01 23:00:11,814 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [800 Valid, 2178 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-01 23:00:11,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165068 states. [2024-12-01 23:00:17,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165068 to 165068. [2024-12-01 23:00:17,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165068 states, 127784 states have (on average 1.5638499342640706) internal successors, (199835), 131952 states have internal predecessors, (199835), 27868 states have call successors, (27868), 8984 states have call predecessors, (27868), 9415 states have return successors, (74565), 27775 states have call predecessors, (74565), 27754 states have call successors, (74565) [2024-12-01 23:00:19,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165068 states to 165068 states and 302268 transitions. [2024-12-01 23:00:20,105 INFO L78 Accepts]: Start accepts. Automaton has 165068 states and 302268 transitions. Word has length 235 [2024-12-01 23:00:20,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:00:20,106 INFO L471 AbstractCegarLoop]: Abstraction has 165068 states and 302268 transitions. [2024-12-01 23:00:20,106 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2024-12-01 23:00:20,106 INFO L276 IsEmpty]: Start isEmpty. Operand 165068 states and 302268 transitions. [2024-12-01 23:00:20,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2024-12-01 23:00:20,115 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:00:20,115 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-12-01 23:00:20,123 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d873a23-466d-4753-825c-4e839f102054/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-12-01 23:00:20,315 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d873a23-466d-4753-825c-4e839f102054/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-12-01 23:00:20,316 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:00:20,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:00:20,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1726471773, now seen corresponding path program 1 times [2024-12-01 23:00:20,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:00:20,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314347738] [2024-12-01 23:00:20,316 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:00:20,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:00:20,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:00:20,668 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 23 proven. 21 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2024-12-01 23:00:20,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:00:20,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314347738] [2024-12-01 23:00:20,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314347738] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:00:20,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008615495] [2024-12-01 23:00:20,669 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:00:20,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:00:20,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d873a23-466d-4753-825c-4e839f102054/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:00:20,670 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d873a23-466d-4753-825c-4e839f102054/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:00:20,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d873a23-466d-4753-825c-4e839f102054/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-01 23:00:21,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:00:21,020 INFO L256 TraceCheckSpWp]: Trace formula consists of 2185 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-01 23:00:21,025 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:00:21,164 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2024-12-01 23:00:21,164 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 23:00:21,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2008615495] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:00:21,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 23:00:21,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 15 [2024-12-01 23:00:21,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58060227] [2024-12-01 23:00:21,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:00:21,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-01 23:00:21,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:00:21,165 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-01 23:00:21,165 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2024-12-01 23:00:21,166 INFO L87 Difference]: Start difference. First operand 165068 states and 302268 transitions. Second operand has 5 states, 5 states have (on average 25.8) internal successors, (129), 4 states have internal predecessors, (129), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2024-12-01 23:00:32,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:00:32,171 INFO L93 Difference]: Finished difference Result 334726 states and 656946 transitions. [2024-12-01 23:00:32,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-01 23:00:32,172 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.8) internal successors, (129), 4 states have internal predecessors, (129), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 244 [2024-12-01 23:00:32,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:00:33,841 INFO L225 Difference]: With dead ends: 334726 [2024-12-01 23:00:33,842 INFO L226 Difference]: Without dead ends: 169676 [2024-12-01 23:00:35,862 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2024-12-01 23:00:35,863 INFO L435 NwaCegarLoop]: 863 mSDtfsCounter, 790 mSDsluCounter, 1312 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 797 SdHoareTripleChecker+Valid, 2175 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-01 23:00:35,863 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [797 Valid, 2175 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-01 23:00:35,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169676 states. [2024-12-01 23:00:41,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169676 to 169676. [2024-12-01 23:00:41,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169676 states, 131816 states have (on average 1.5684514778175638) internal successors, (206747), 135984 states have internal predecessors, (206747), 27868 states have call successors, (27868), 9560 states have call predecessors, (27868), 9991 states have return successors, (74866), 27775 states have call predecessors, (74866), 27754 states have call successors, (74866) [2024-12-01 23:00:44,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169676 states to 169676 states and 309481 transitions. [2024-12-01 23:00:44,389 INFO L78 Accepts]: Start accepts. Automaton has 169676 states and 309481 transitions. Word has length 244 [2024-12-01 23:00:44,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:00:44,389 INFO L471 AbstractCegarLoop]: Abstraction has 169676 states and 309481 transitions. [2024-12-01 23:00:44,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.8) internal successors, (129), 4 states have internal predecessors, (129), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2024-12-01 23:00:44,389 INFO L276 IsEmpty]: Start isEmpty. Operand 169676 states and 309481 transitions. [2024-12-01 23:00:44,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2024-12-01 23:00:44,398 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:00:44,398 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-12-01 23:00:44,408 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d873a23-466d-4753-825c-4e839f102054/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-12-01 23:00:44,599 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d873a23-466d-4753-825c-4e839f102054/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:00:44,599 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:00:44,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:00:44,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1819800557, now seen corresponding path program 1 times [2024-12-01 23:00:44,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:00:44,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171405178] [2024-12-01 23:00:44,599 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:00:44,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:00:44,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:00:44,784 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 23 proven. 24 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2024-12-01 23:00:44,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:00:44,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171405178] [2024-12-01 23:00:44,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171405178] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:00:44,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893161117] [2024-12-01 23:00:44,785 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:00:44,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:00:44,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d873a23-466d-4753-825c-4e839f102054/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:00:44,786 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d873a23-466d-4753-825c-4e839f102054/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:00:44,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d873a23-466d-4753-825c-4e839f102054/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-01 23:00:45,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:00:45,184 INFO L256 TraceCheckSpWp]: Trace formula consists of 2189 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-01 23:00:45,188 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:00:45,326 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2024-12-01 23:00:45,326 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 23:00:45,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [893161117] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:00:45,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 23:00:45,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 15 [2024-12-01 23:00:45,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158285007] [2024-12-01 23:00:45,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:00:45,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-01 23:00:45,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:00:45,327 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-01 23:00:45,328 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2024-12-01 23:00:45,328 INFO L87 Difference]: Start difference. First operand 169676 states and 309481 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2024-12-01 23:00:55,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:00:55,982 INFO L93 Difference]: Finished difference Result 343942 states and 670572 transitions. [2024-12-01 23:00:55,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-01 23:00:55,983 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 248 [2024-12-01 23:00:55,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:00:57,657 INFO L225 Difference]: With dead ends: 343942 [2024-12-01 23:00:57,657 INFO L226 Difference]: Without dead ends: 174284