./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec3_product26.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_a64374d7-cb2f-4e3c-9393-369c72ab6286/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a64374d7-cb2f-4e3c-9393-369c72ab6286/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_a64374d7-cb2f-4e3c-9393-369c72ab6286/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a64374d7-cb2f-4e3c-9393-369c72ab6286/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product26.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a64374d7-cb2f-4e3c-9393-369c72ab6286/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_a64374d7-cb2f-4e3c-9393-369c72ab6286/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 64b60b46be25872d2112a950c23ddbe99bccee21bea4e463fd90753650d2a7bd --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 14:44:59,544 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 14:44:59,599 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a64374d7-cb2f-4e3c-9393-369c72ab6286/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 14:44:59,604 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 14:44:59,604 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 14:44:59,626 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 14:44:59,627 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 14:44:59,627 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 14:44:59,627 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 14:44:59,627 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 14:44:59,627 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 14:44:59,627 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 14:44:59,628 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 14:44:59,628 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 14:44:59,628 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 14:44:59,628 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 14:44:59,628 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 14:44:59,628 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 14:44:59,628 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 14:44:59,628 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 14:44:59,628 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 14:44:59,629 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 14:44:59,629 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 14:44:59,629 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 14:44:59,629 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 14:44:59,629 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 14:44:59,629 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 14:44:59,629 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 14:44:59,629 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 14:44:59,629 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 14:44:59,629 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 14:44:59,630 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 14:44:59,630 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 14:44:59,630 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 14:44:59,630 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 14:44:59,630 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 14:44:59,630 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 14:44:59,630 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 14:44:59,630 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 14:44:59,630 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 14:44:59,630 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 14:44:59,630 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 14:44:59,631 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 14:44:59,631 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 14:44:59,631 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 14:44:59,631 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 14:44:59,631 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 14:44:59,631 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 14:44:59,631 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_a64374d7-cb2f-4e3c-9393-369c72ab6286/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 -> 64b60b46be25872d2112a950c23ddbe99bccee21bea4e463fd90753650d2a7bd [2024-12-02 14:44:59,871 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 14:44:59,880 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 14:44:59,882 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 14:44:59,883 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 14:44:59,883 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 14:44:59,885 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a64374d7-cb2f-4e3c-9393-369c72ab6286/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/product-lines/elevator_spec3_product26.cil.c [2024-12-02 14:45:02,618 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a64374d7-cb2f-4e3c-9393-369c72ab6286/bin/uautomizer-verify-84ZbGMXZE1/data/a220dae7d/cf835d604b3841f0863acc2f403c5a73/FLAG6fd225282 [2024-12-02 14:45:02,910 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 14:45:02,911 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a64374d7-cb2f-4e3c-9393-369c72ab6286/sv-benchmarks/c/product-lines/elevator_spec3_product26.cil.c [2024-12-02 14:45:02,927 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a64374d7-cb2f-4e3c-9393-369c72ab6286/bin/uautomizer-verify-84ZbGMXZE1/data/a220dae7d/cf835d604b3841f0863acc2f403c5a73/FLAG6fd225282 [2024-12-02 14:45:02,940 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a64374d7-cb2f-4e3c-9393-369c72ab6286/bin/uautomizer-verify-84ZbGMXZE1/data/a220dae7d/cf835d604b3841f0863acc2f403c5a73 [2024-12-02 14:45:02,942 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 14:45:02,943 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 14:45:02,945 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 14:45:02,945 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 14:45:02,949 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 14:45:02,949 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:45:02" (1/1) ... [2024-12-02 14:45:02,950 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1242076a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:45:02, skipping insertion in model container [2024-12-02 14:45:02,950 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:45:02" (1/1) ... [2024-12-02 14:45:02,989 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 14:45:03,376 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_a64374d7-cb2f-4e3c-9393-369c72ab6286/sv-benchmarks/c/product-lines/elevator_spec3_product26.cil.c[67702,67715] [2024-12-02 14:45:03,387 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 14:45:03,398 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 14:45:03,405 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [48] [2024-12-02 14:45:03,407 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [67] [2024-12-02 14:45:03,407 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [168] [2024-12-02 14:45:03,407 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [520] [2024-12-02 14:45:03,407 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [2041] [2024-12-02 14:45:03,407 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [2407] [2024-12-02 14:45:03,407 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [3068] [2024-12-02 14:45:03,407 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [3186] [2024-12-02 14:45:03,407 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [3195] [2024-12-02 14:45:03,408 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification3_spec.i","") [3230] [2024-12-02 14:45:03,494 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_a64374d7-cb2f-4e3c-9393-369c72ab6286/sv-benchmarks/c/product-lines/elevator_spec3_product26.cil.c[67702,67715] [2024-12-02 14:45:03,499 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 14:45:03,524 INFO L204 MainTranslator]: Completed translation [2024-12-02 14:45:03,524 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:45:03 WrapperNode [2024-12-02 14:45:03,525 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 14:45:03,525 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 14:45:03,525 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 14:45:03,526 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 14:45:03,531 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:45:03" (1/1) ... [2024-12-02 14:45:03,549 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:45:03" (1/1) ... [2024-12-02 14:45:03,577 INFO L138 Inliner]: procedures = 91, calls = 346, calls flagged for inlining = 27, calls inlined = 23, statements flattened = 861 [2024-12-02 14:45:03,577 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 14:45:03,578 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 14:45:03,578 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 14:45:03,578 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 14:45:03,585 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:45:03" (1/1) ... [2024-12-02 14:45:03,585 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:45:03" (1/1) ... [2024-12-02 14:45:03,590 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:45:03" (1/1) ... [2024-12-02 14:45:03,612 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. The 0 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. [2024-12-02 14:45:03,612 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:45:03" (1/1) ... [2024-12-02 14:45:03,612 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:45:03" (1/1) ... [2024-12-02 14:45:03,630 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:45:03" (1/1) ... [2024-12-02 14:45:03,632 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:45:03" (1/1) ... [2024-12-02 14:45:03,643 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:45:03" (1/1) ... [2024-12-02 14:45:03,648 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:45:03" (1/1) ... [2024-12-02 14:45:03,652 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:45:03" (1/1) ... [2024-12-02 14:45:03,660 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 14:45:03,661 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 14:45:03,661 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 14:45:03,661 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 14:45:03,662 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:45:03" (1/1) ... [2024-12-02 14:45:03,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 14:45:03,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a64374d7-cb2f-4e3c-9393-369c72ab6286/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:45:03,692 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a64374d7-cb2f-4e3c-9393-369c72ab6286/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 14:45:03,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a64374d7-cb2f-4e3c-9393-369c72ab6286/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 14:45:03,718 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 14:45:03,719 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2024-12-02 14:45:03,719 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2024-12-02 14:45:03,719 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2024-12-02 14:45:03,719 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2024-12-02 14:45:03,719 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-12-02 14:45:03,719 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-12-02 14:45:03,719 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-12-02 14:45:03,719 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-12-02 14:45:03,719 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2024-12-02 14:45:03,719 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2024-12-02 14:45:03,719 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-12-02 14:45:03,720 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-12-02 14:45:03,720 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-12-02 14:45:03,720 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-12-02 14:45:03,720 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-12-02 14:45:03,720 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-12-02 14:45:03,720 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-12-02 14:45:03,720 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-12-02 14:45:03,720 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-12-02 14:45:03,720 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-12-02 14:45:03,720 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-12-02 14:45:03,720 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-12-02 14:45:03,720 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-12-02 14:45:03,720 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-12-02 14:45:03,720 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2024-12-02 14:45:03,720 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2024-12-02 14:45:03,721 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-12-02 14:45:03,721 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-12-02 14:45:03,721 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2024-12-02 14:45:03,721 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2024-12-02 14:45:03,721 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-12-02 14:45:03,721 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-12-02 14:45:03,721 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__empty [2024-12-02 14:45:03,721 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__empty [2024-12-02 14:45:03,721 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-12-02 14:45:03,721 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-12-02 14:45:03,721 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-12-02 14:45:03,721 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-12-02 14:45:03,721 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-12-02 14:45:03,721 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-12-02 14:45:03,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 14:45:03,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 14:45:03,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-12-02 14:45:03,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-12-02 14:45:03,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-12-02 14:45:03,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-12-02 14:45:03,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-12-02 14:45:03,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-12-02 14:45:03,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-12-02 14:45:03,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-12-02 14:45:03,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-12-02 14:45:03,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-12-02 14:45:03,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-12-02 14:45:03,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-12-02 14:45:03,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-12-02 14:45:03,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-12-02 14:45:03,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-12-02 14:45:03,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-12-02 14:45:03,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2024-12-02 14:45:03,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2024-12-02 14:45:03,723 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2024-12-02 14:45:03,723 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2024-12-02 14:45:03,723 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-12-02 14:45:03,723 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-12-02 14:45:03,723 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-12-02 14:45:03,723 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-12-02 14:45:03,723 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-12-02 14:45:03,723 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-12-02 14:45:03,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 14:45:03,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 14:45:03,723 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-12-02 14:45:03,723 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-12-02 14:45:03,880 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 14:45:03,882 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 14:45:04,976 INFO L? ?]: Removed 451 outVars from TransFormulas that were not future-live. [2024-12-02 14:45:04,977 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 14:45:04,998 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 14:45:04,998 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 14:45:04,998 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:45:04 BoogieIcfgContainer [2024-12-02 14:45:04,998 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 14:45:05,001 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 14:45:05,001 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 14:45:05,005 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 14:45:05,005 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 02:45:02" (1/3) ... [2024-12-02 14:45:05,006 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77e00f2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:45:05, skipping insertion in model container [2024-12-02 14:45:05,006 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:45:03" (2/3) ... [2024-12-02 14:45:05,006 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77e00f2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:45:05, skipping insertion in model container [2024-12-02 14:45:05,006 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:45:04" (3/3) ... [2024-12-02 14:45:05,007 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product26.cil.c [2024-12-02 14:45:05,020 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 14:45:05,021 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec3_product26.cil.c that has 26 procedures, 577 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 14:45:05,084 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 14:45:05,093 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;@7581cf64, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 14:45:05,093 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 14:45:05,097 INFO L276 IsEmpty]: Start isEmpty. Operand has 577 states, 448 states have (on average 1.6875) internal successors, (756), 468 states have internal predecessors, (756), 102 states have call successors, (102), 25 states have call predecessors, (102), 25 states have return successors, (102), 98 states have call predecessors, (102), 102 states have call successors, (102) [2024-12-02 14:45:05,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-12-02 14:45:05,107 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:45:05,107 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:45:05,108 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:45:05,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:45:05,111 INFO L85 PathProgramCache]: Analyzing trace with hash -48130802, now seen corresponding path program 1 times [2024-12-02 14:45:05,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:45:05,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308263948] [2024-12-02 14:45:05,118 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:45:05,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:45:05,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:45:05,685 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 14:45:05,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:45:05,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308263948] [2024-12-02 14:45:05,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308263948] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:45:05,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:45:05,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 14:45:05,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24581320] [2024-12-02 14:45:05,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:45:05,691 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 14:45:05,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:45:05,716 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 14:45:05,716 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:45:05,718 INFO L87 Difference]: Start difference. First operand has 577 states, 448 states have (on average 1.6875) internal successors, (756), 468 states have internal predecessors, (756), 102 states have call successors, (102), 25 states have call predecessors, (102), 25 states have return successors, (102), 98 states have call predecessors, (102), 102 states have call successors, (102) Second operand has 7 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-12-02 14:45:05,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:45:05,935 INFO L93 Difference]: Finished difference Result 1151 states and 1932 transitions. [2024-12-02 14:45:05,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 14:45:05,937 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 63 [2024-12-02 14:45:05,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:45:05,951 INFO L225 Difference]: With dead ends: 1151 [2024-12-02 14:45:05,951 INFO L226 Difference]: Without dead ends: 582 [2024-12-02 14:45:05,957 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 [2024-12-02 14:45:05,960 INFO L435 NwaCegarLoop]: 942 mSDtfsCounter, 91 mSDsluCounter, 4625 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 5567 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:45:05,961 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 5567 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:45:05,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2024-12-02 14:45:06,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 580. [2024-12-02 14:45:06,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 451 states have (on average 1.6784922394678492) internal successors, (757), 471 states have internal predecessors, (757), 103 states have call successors, (103), 25 states have call predecessors, (103), 25 states have return successors, (102), 97 states have call predecessors, (102), 100 states have call successors, (102) [2024-12-02 14:45:06,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 962 transitions. [2024-12-02 14:45:06,049 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 962 transitions. Word has length 63 [2024-12-02 14:45:06,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:45:06,050 INFO L471 AbstractCegarLoop]: Abstraction has 580 states and 962 transitions. [2024-12-02 14:45:06,050 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-12-02 14:45:06,050 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 962 transitions. [2024-12-02 14:45:06,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-12-02 14:45:06,054 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:45:06,054 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:45:06,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 14:45:06,054 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:45:06,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:45:06,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1533612518, now seen corresponding path program 1 times [2024-12-02 14:45:06,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:45:06,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228900201] [2024-12-02 14:45:06,055 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:45:06,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:45:06,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:45:06,398 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 14:45:06,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:45:06,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228900201] [2024-12-02 14:45:06,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228900201] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:45:06,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:45:06,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 14:45:06,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385542200] [2024-12-02 14:45:06,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:45:06,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 14:45:06,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:45:06,401 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 14:45:06,401 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:45:06,401 INFO L87 Difference]: Start difference. First operand 580 states and 962 transitions. Second operand has 7 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-12-02 14:45:06,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:45:06,526 INFO L93 Difference]: Finished difference Result 1155 states and 1927 transitions. [2024-12-02 14:45:06,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 14:45:06,526 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 64 [2024-12-02 14:45:06,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:45:06,532 INFO L225 Difference]: With dead ends: 1155 [2024-12-02 14:45:06,532 INFO L226 Difference]: Without dead ends: 591 [2024-12-02 14:45:06,534 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 [2024-12-02 14:45:06,535 INFO L435 NwaCegarLoop]: 943 mSDtfsCounter, 90 mSDsluCounter, 4619 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 5562 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 [2024-12-02 14:45:06,535 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 5562 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:45:06,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2024-12-02 14:45:06,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 580. [2024-12-02 14:45:06,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 451 states have (on average 1.6784922394678492) internal successors, (757), 471 states have internal predecessors, (757), 103 states have call successors, (103), 25 states have call predecessors, (103), 25 states have return successors, (102), 97 states have call predecessors, (102), 100 states have call successors, (102) [2024-12-02 14:45:06,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 962 transitions. [2024-12-02 14:45:06,571 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 962 transitions. Word has length 64 [2024-12-02 14:45:06,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:45:06,571 INFO L471 AbstractCegarLoop]: Abstraction has 580 states and 962 transitions. [2024-12-02 14:45:06,572 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-12-02 14:45:06,572 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 962 transitions. [2024-12-02 14:45:06,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-12-02 14:45:06,574 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:45:06,574 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:45:06,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 14:45:06,574 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:45:06,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:45:06,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1370720686, now seen corresponding path program 1 times [2024-12-02 14:45:06,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:45:06,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182500210] [2024-12-02 14:45:06,575 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:45:06,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:45:06,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:45:06,717 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 14:45:06,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:45:06,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182500210] [2024-12-02 14:45:06,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182500210] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:45:06,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:45:06,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 14:45:06,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624354247] [2024-12-02 14:45:06,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:45:06,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:45:06,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:45:06,719 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:45:06,719 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 14:45:06,719 INFO L87 Difference]: Start difference. First operand 580 states and 962 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-12-02 14:45:06,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:45:06,796 INFO L93 Difference]: Finished difference Result 1142 states and 1905 transitions. [2024-12-02 14:45:06,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:45:06,796 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 64 [2024-12-02 14:45:06,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:45:06,801 INFO L225 Difference]: With dead ends: 1142 [2024-12-02 14:45:06,802 INFO L226 Difference]: Without dead ends: 550 [2024-12-02 14:45:06,805 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 [2024-12-02 14:45:06,805 INFO L435 NwaCegarLoop]: 932 mSDtfsCounter, 14 mSDsluCounter, 1859 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2791 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 [2024-12-02 14:45:06,806 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2791 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:45:06,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2024-12-02 14:45:06,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 550. [2024-12-02 14:45:06,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 550 states, 424 states have (on average 1.6627358490566038) internal successors, (705), 442 states have internal predecessors, (705), 102 states have call successors, (102), 25 states have call predecessors, (102), 23 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2024-12-02 14:45:06,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 906 transitions. [2024-12-02 14:45:06,832 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 906 transitions. Word has length 64 [2024-12-02 14:45:06,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:45:06,833 INFO L471 AbstractCegarLoop]: Abstraction has 550 states and 906 transitions. [2024-12-02 14:45:06,833 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-12-02 14:45:06,833 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 906 transitions. [2024-12-02 14:45:06,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-12-02 14:45:06,834 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:45:06,834 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:45:06,834 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 14:45:06,834 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:45:06,835 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:45:06,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1985286606, now seen corresponding path program 1 times [2024-12-02 14:45:06,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:45:06,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610035538] [2024-12-02 14:45:06,835 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:45:06,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:45:06,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:45:07,044 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 14:45:07,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:45:07,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610035538] [2024-12-02 14:45:07,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610035538] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:45:07,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:45:07,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 14:45:07,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245754730] [2024-12-02 14:45:07,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:45:07,045 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 14:45:07,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:45:07,046 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 14:45:07,046 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:45:07,046 INFO L87 Difference]: Start difference. First operand 550 states and 906 transitions. Second operand has 7 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-12-02 14:45:07,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:45:07,135 INFO L93 Difference]: Finished difference Result 1093 states and 1811 transitions. [2024-12-02 14:45:07,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 14:45:07,136 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2024-12-02 14:45:07,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:45:07,142 INFO L225 Difference]: With dead ends: 1093 [2024-12-02 14:45:07,142 INFO L226 Difference]: Without dead ends: 544 [2024-12-02 14:45:07,146 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 [2024-12-02 14:45:07,146 INFO L435 NwaCegarLoop]: 896 mSDtfsCounter, 63 mSDsluCounter, 4422 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 5318 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 [2024-12-02 14:45:07,147 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 5318 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:45:07,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2024-12-02 14:45:07,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 544. [2024-12-02 14:45:07,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 418 states have (on average 1.6555023923444976) internal successors, (692), 436 states have internal predecessors, (692), 102 states have call successors, (102), 25 states have call predecessors, (102), 23 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2024-12-02 14:45:07,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 893 transitions. [2024-12-02 14:45:07,173 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 893 transitions. Word has length 65 [2024-12-02 14:45:07,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:45:07,173 INFO L471 AbstractCegarLoop]: Abstraction has 544 states and 893 transitions. [2024-12-02 14:45:07,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-12-02 14:45:07,173 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 893 transitions. [2024-12-02 14:45:07,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-12-02 14:45:07,175 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:45:07,175 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:45:07,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 14:45:07,175 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:45:07,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:45:07,175 INFO L85 PathProgramCache]: Analyzing trace with hash -415344246, now seen corresponding path program 1 times [2024-12-02 14:45:07,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:45:07,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472528879] [2024-12-02 14:45:07,176 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:45:07,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:45:07,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:45:07,366 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 14:45:07,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:45:07,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472528879] [2024-12-02 14:45:07,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472528879] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:45:07,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:45:07,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 14:45:07,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755940900] [2024-12-02 14:45:07,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:45:07,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 14:45:07,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:45:07,368 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 14:45:07,368 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:45:07,368 INFO L87 Difference]: Start difference. First operand 544 states and 893 transitions. Second operand has 7 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-12-02 14:45:07,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:45:07,455 INFO L93 Difference]: Finished difference Result 1081 states and 1785 transitions. [2024-12-02 14:45:07,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 14:45:07,455 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 66 [2024-12-02 14:45:07,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:45:07,461 INFO L225 Difference]: With dead ends: 1081 [2024-12-02 14:45:07,461 INFO L226 Difference]: Without dead ends: 538 [2024-12-02 14:45:07,464 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 [2024-12-02 14:45:07,464 INFO L435 NwaCegarLoop]: 884 mSDtfsCounter, 49 mSDsluCounter, 4374 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 5258 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 [2024-12-02 14:45:07,465 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 5258 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:45:07,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2024-12-02 14:45:07,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 538. [2024-12-02 14:45:07,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 412 states have (on average 1.6480582524271845) internal successors, (679), 430 states have internal predecessors, (679), 102 states have call successors, (102), 25 states have call predecessors, (102), 23 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2024-12-02 14:45:07,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 880 transitions. [2024-12-02 14:45:07,489 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 880 transitions. Word has length 66 [2024-12-02 14:45:07,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:45:07,490 INFO L471 AbstractCegarLoop]: Abstraction has 538 states and 880 transitions. [2024-12-02 14:45:07,490 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-12-02 14:45:07,490 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 880 transitions. [2024-12-02 14:45:07,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-12-02 14:45:07,491 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:45:07,491 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:45:07,491 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 14:45:07,491 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:45:07,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:45:07,491 INFO L85 PathProgramCache]: Analyzing trace with hash -2077683381, now seen corresponding path program 1 times [2024-12-02 14:45:07,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:45:07,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839418390] [2024-12-02 14:45:07,492 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:45:07,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:45:07,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:45:07,658 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 14:45:07,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:45:07,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839418390] [2024-12-02 14:45:07,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839418390] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:45:07,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:45:07,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 14:45:07,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813561796] [2024-12-02 14:45:07,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:45:07,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 14:45:07,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:45:07,659 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 14:45:07,659 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:45:07,659 INFO L87 Difference]: Start difference. First operand 538 states and 880 transitions. Second operand has 7 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-12-02 14:45:07,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:45:07,733 INFO L93 Difference]: Finished difference Result 1069 states and 1759 transitions. [2024-12-02 14:45:07,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 14:45:07,733 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 66 [2024-12-02 14:45:07,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:45:07,738 INFO L225 Difference]: With dead ends: 1069 [2024-12-02 14:45:07,738 INFO L226 Difference]: Without dead ends: 538 [2024-12-02 14:45:07,741 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 [2024-12-02 14:45:07,742 INFO L435 NwaCegarLoop]: 872 mSDtfsCounter, 24 mSDsluCounter, 4338 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 5210 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 [2024-12-02 14:45:07,742 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 5210 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:45:07,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2024-12-02 14:45:07,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 538. [2024-12-02 14:45:07,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 412 states have (on average 1.645631067961165) internal successors, (678), 430 states have internal predecessors, (678), 102 states have call successors, (102), 25 states have call predecessors, (102), 23 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2024-12-02 14:45:07,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 879 transitions. [2024-12-02 14:45:07,767 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 879 transitions. Word has length 66 [2024-12-02 14:45:07,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:45:07,768 INFO L471 AbstractCegarLoop]: Abstraction has 538 states and 879 transitions. [2024-12-02 14:45:07,768 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-12-02 14:45:07,768 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 879 transitions. [2024-12-02 14:45:07,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-12-02 14:45:07,769 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:45:07,769 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:45:07,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 14:45:07,769 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:45:07,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:45:07,769 INFO L85 PathProgramCache]: Analyzing trace with hash -5105834, now seen corresponding path program 1 times [2024-12-02 14:45:07,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:45:07,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200279246] [2024-12-02 14:45:07,770 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:45:07,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:45:07,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:45:07,868 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 14:45:07,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:45:07,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200279246] [2024-12-02 14:45:07,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200279246] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:45:07,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:45:07,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 14:45:07,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214418300] [2024-12-02 14:45:07,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:45:07,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:45:07,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:45:07,870 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:45:07,870 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 14:45:07,870 INFO L87 Difference]: Start difference. First operand 538 states and 879 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-12-02 14:45:07,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:45:07,931 INFO L93 Difference]: Finished difference Result 1060 states and 1744 transitions. [2024-12-02 14:45:07,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 14:45:07,932 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 67 [2024-12-02 14:45:07,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:45:07,937 INFO L225 Difference]: With dead ends: 1060 [2024-12-02 14:45:07,937 INFO L226 Difference]: Without dead ends: 538 [2024-12-02 14:45:07,940 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 [2024-12-02 14:45:07,940 INFO L435 NwaCegarLoop]: 864 mSDtfsCounter, 15 mSDsluCounter, 1713 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 2577 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 [2024-12-02 14:45:07,941 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 2577 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:45:07,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2024-12-02 14:45:07,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 538. [2024-12-02 14:45:07,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 412 states have (on average 1.6432038834951457) internal successors, (677), 430 states have internal predecessors, (677), 102 states have call successors, (102), 25 states have call predecessors, (102), 23 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2024-12-02 14:45:07,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 878 transitions. [2024-12-02 14:45:07,962 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 878 transitions. Word has length 67 [2024-12-02 14:45:07,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:45:07,962 INFO L471 AbstractCegarLoop]: Abstraction has 538 states and 878 transitions. [2024-12-02 14:45:07,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-12-02 14:45:07,963 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 878 transitions. [2024-12-02 14:45:07,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-12-02 14:45:07,963 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:45:07,964 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:45:07,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 14:45:07,964 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:45:07,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:45:07,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1029852138, now seen corresponding path program 1 times [2024-12-02 14:45:07,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:45:07,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158491028] [2024-12-02 14:45:07,964 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:45:07,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:45:07,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:45:08,066 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 14:45:08,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:45:08,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158491028] [2024-12-02 14:45:08,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158491028] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:45:08,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:45:08,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 14:45:08,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986806089] [2024-12-02 14:45:08,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:45:08,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:45:08,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:45:08,068 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:45:08,068 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 14:45:08,068 INFO L87 Difference]: Start difference. First operand 538 states and 878 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-12-02 14:45:08,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:45:08,118 INFO L93 Difference]: Finished difference Result 1060 states and 1742 transitions. [2024-12-02 14:45:08,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 14:45:08,118 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 68 [2024-12-02 14:45:08,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:45:08,123 INFO L225 Difference]: With dead ends: 1060 [2024-12-02 14:45:08,123 INFO L226 Difference]: Without dead ends: 538 [2024-12-02 14:45:08,126 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 [2024-12-02 14:45:08,126 INFO L435 NwaCegarLoop]: 865 mSDtfsCounter, 14 mSDsluCounter, 1714 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2579 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 [2024-12-02 14:45:08,126 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2579 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:45:08,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2024-12-02 14:45:08,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 538. [2024-12-02 14:45:08,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 412 states have (on average 1.6407766990291262) internal successors, (676), 430 states have internal predecessors, (676), 102 states have call successors, (102), 25 states have call predecessors, (102), 23 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2024-12-02 14:45:08,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 877 transitions. [2024-12-02 14:45:08,148 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 877 transitions. Word has length 68 [2024-12-02 14:45:08,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:45:08,149 INFO L471 AbstractCegarLoop]: Abstraction has 538 states and 877 transitions. [2024-12-02 14:45:08,149 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-12-02 14:45:08,149 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 877 transitions. [2024-12-02 14:45:08,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-12-02 14:45:08,150 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:45:08,150 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:45:08,150 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 14:45:08,150 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:45:08,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:45:08,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1208719205, now seen corresponding path program 1 times [2024-12-02 14:45:08,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:45:08,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683942] [2024-12-02 14:45:08,151 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:45:08,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:45:08,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:45:08,252 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 14:45:08,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:45:08,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683942] [2024-12-02 14:45:08,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683942] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:45:08,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:45:08,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 14:45:08,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756397046] [2024-12-02 14:45:08,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:45:08,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:45:08,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:45:08,253 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:45:08,253 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 14:45:08,253 INFO L87 Difference]: Start difference. First operand 538 states and 877 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-12-02 14:45:08,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:45:08,297 INFO L93 Difference]: Finished difference Result 1060 states and 1740 transitions. [2024-12-02 14:45:08,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 14:45:08,297 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 69 [2024-12-02 14:45:08,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:45:08,302 INFO L225 Difference]: With dead ends: 1060 [2024-12-02 14:45:08,302 INFO L226 Difference]: Without dead ends: 538 [2024-12-02 14:45:08,305 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 [2024-12-02 14:45:08,305 INFO L435 NwaCegarLoop]: 866 mSDtfsCounter, 13 mSDsluCounter, 1715 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2581 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 [2024-12-02 14:45:08,306 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2581 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:45:08,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2024-12-02 14:45:08,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 538. [2024-12-02 14:45:08,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 412 states have (on average 1.6383495145631068) internal successors, (675), 430 states have internal predecessors, (675), 102 states have call successors, (102), 25 states have call predecessors, (102), 23 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2024-12-02 14:45:08,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 876 transitions. [2024-12-02 14:45:08,327 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 876 transitions. Word has length 69 [2024-12-02 14:45:08,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:45:08,327 INFO L471 AbstractCegarLoop]: Abstraction has 538 states and 876 transitions. [2024-12-02 14:45:08,327 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-12-02 14:45:08,328 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 876 transitions. [2024-12-02 14:45:08,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-12-02 14:45:08,328 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:45:08,329 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:45:08,329 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 14:45:08,329 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:45:08,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:45:08,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1847484209, now seen corresponding path program 1 times [2024-12-02 14:45:08,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:45:08,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430483127] [2024-12-02 14:45:08,329 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:45:08,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:45:08,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:45:08,448 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 14:45:08,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:45:08,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430483127] [2024-12-02 14:45:08,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430483127] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:45:08,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:45:08,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 14:45:08,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546893357] [2024-12-02 14:45:08,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:45:08,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:45:08,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:45:08,450 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:45:08,450 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 14:45:08,450 INFO L87 Difference]: Start difference. First operand 538 states and 876 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-12-02 14:45:08,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:45:08,502 INFO L93 Difference]: Finished difference Result 1060 states and 1738 transitions. [2024-12-02 14:45:08,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 14:45:08,503 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 70 [2024-12-02 14:45:08,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:45:08,509 INFO L225 Difference]: With dead ends: 1060 [2024-12-02 14:45:08,509 INFO L226 Difference]: Without dead ends: 538 [2024-12-02 14:45:08,512 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 [2024-12-02 14:45:08,513 INFO L435 NwaCegarLoop]: 867 mSDtfsCounter, 12 mSDsluCounter, 1716 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2583 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 [2024-12-02 14:45:08,513 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2583 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:45:08,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2024-12-02 14:45:08,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 538. [2024-12-02 14:45:08,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 412 states have (on average 1.6359223300970873) internal successors, (674), 430 states have internal predecessors, (674), 102 states have call successors, (102), 25 states have call predecessors, (102), 23 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2024-12-02 14:45:08,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 875 transitions. [2024-12-02 14:45:08,541 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 875 transitions. Word has length 70 [2024-12-02 14:45:08,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:45:08,542 INFO L471 AbstractCegarLoop]: Abstraction has 538 states and 875 transitions. [2024-12-02 14:45:08,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-12-02 14:45:08,542 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 875 transitions. [2024-12-02 14:45:08,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-12-02 14:45:08,543 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:45:08,543 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:45:08,544 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 14:45:08,544 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:45:08,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:45:08,544 INFO L85 PathProgramCache]: Analyzing trace with hash -136892960, now seen corresponding path program 1 times [2024-12-02 14:45:08,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:45:08,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775743748] [2024-12-02 14:45:08,544 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:45:08,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:45:08,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:45:08,819 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 14:45:08,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:45:08,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775743748] [2024-12-02 14:45:08,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775743748] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:45:08,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020869879] [2024-12-02 14:45:08,819 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:45:08,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:45:08,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a64374d7-cb2f-4e3c-9393-369c72ab6286/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:45:08,821 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a64374d7-cb2f-4e3c-9393-369c72ab6286/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:45:08,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a64374d7-cb2f-4e3c-9393-369c72ab6286/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 14:45:09,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:45:09,151 INFO L256 TraceCheckSpWp]: Trace formula consists of 1487 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 14:45:09,156 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:45:09,204 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:45:09,204 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:45:09,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1020869879] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:45:09,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:45:09,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2024-12-02 14:45:09,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519773607] [2024-12-02 14:45:09,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:45:09,205 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:45:09,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:45:09,205 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:45:09,205 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-12-02 14:45:09,205 INFO L87 Difference]: Start difference. First operand 538 states and 875 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-12-02 14:45:09,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:45:09,265 INFO L93 Difference]: Finished difference Result 1526 states and 2515 transitions. [2024-12-02 14:45:09,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:45:09,265 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 71 [2024-12-02 14:45:09,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:45:09,271 INFO L225 Difference]: With dead ends: 1526 [2024-12-02 14:45:09,271 INFO L226 Difference]: Without dead ends: 1006 [2024-12-02 14:45:09,274 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-12-02 14:45:09,275 INFO L435 NwaCegarLoop]: 885 mSDtfsCounter, 839 mSDsluCounter, 773 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 839 SdHoareTripleChecker+Valid, 1658 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 [2024-12-02 14:45:09,275 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [839 Valid, 1658 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:45:09,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1006 states. [2024-12-02 14:45:09,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1006 to 991. [2024-12-02 14:45:09,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 991 states, 766 states have (on average 1.650130548302872) internal successors, (1264), 801 states have internal predecessors, (1264), 180 states have call successors, (180), 45 states have call predecessors, (180), 44 states have return successors, (182), 172 states have call predecessors, (182), 177 states have call successors, (182) [2024-12-02 14:45:09,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 1626 transitions. [2024-12-02 14:45:09,305 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 1626 transitions. Word has length 71 [2024-12-02 14:45:09,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:45:09,305 INFO L471 AbstractCegarLoop]: Abstraction has 991 states and 1626 transitions. [2024-12-02 14:45:09,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-12-02 14:45:09,305 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 1626 transitions. [2024-12-02 14:45:09,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-12-02 14:45:09,306 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:45:09,306 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:45:09,317 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a64374d7-cb2f-4e3c-9393-369c72ab6286/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 14:45:09,507 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a64374d7-cb2f-4e3c-9393-369c72ab6286/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-12-02 14:45:09,507 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:45:09,507 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:45:09,507 INFO L85 PathProgramCache]: Analyzing trace with hash -960121851, now seen corresponding path program 1 times [2024-12-02 14:45:09,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:45:09,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098123864] [2024-12-02 14:45:09,508 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:45:09,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:45:09,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:45:09,752 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 14:45:09,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:45:09,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098123864] [2024-12-02 14:45:09,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098123864] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:45:09,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039224426] [2024-12-02 14:45:09,753 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:45:09,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:45:09,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a64374d7-cb2f-4e3c-9393-369c72ab6286/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:45:09,755 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a64374d7-cb2f-4e3c-9393-369c72ab6286/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:45:09,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a64374d7-cb2f-4e3c-9393-369c72ab6286/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 14:45:10,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:45:10,075 INFO L256 TraceCheckSpWp]: Trace formula consists of 1488 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 14:45:10,079 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:45:10,121 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:45:10,121 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:45:10,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2039224426] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:45:10,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:45:10,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2024-12-02 14:45:10,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208401198] [2024-12-02 14:45:10,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:45:10,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:45:10,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:45:10,122 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:45:10,122 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-12-02 14:45:10,122 INFO L87 Difference]: Start difference. First operand 991 states and 1626 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-12-02 14:45:10,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:45:10,213 INFO L93 Difference]: Finished difference Result 2432 states and 4019 transitions. [2024-12-02 14:45:10,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:45:10,214 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 72 [2024-12-02 14:45:10,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:45:10,225 INFO L225 Difference]: With dead ends: 2432 [2024-12-02 14:45:10,225 INFO L226 Difference]: Without dead ends: 1459 [2024-12-02 14:45:10,231 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-12-02 14:45:10,231 INFO L435 NwaCegarLoop]: 941 mSDtfsCounter, 840 mSDsluCounter, 771 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 840 SdHoareTripleChecker+Valid, 1712 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:45:10,232 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [840 Valid, 1712 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:45:10,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1459 states. [2024-12-02 14:45:10,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1459 to 1411. [2024-12-02 14:45:10,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1411 states, 1093 states have (on average 1.6633119853613907) internal successors, (1818), 1145 states have internal predecessors, (1818), 255 states have call successors, (255), 62 states have call predecessors, (255), 62 states have return successors, (262), 245 states have call predecessors, (262), 252 states have call successors, (262) [2024-12-02 14:45:10,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1411 states to 1411 states and 2335 transitions. [2024-12-02 14:45:10,302 INFO L78 Accepts]: Start accepts. Automaton has 1411 states and 2335 transitions. Word has length 72 [2024-12-02 14:45:10,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:45:10,303 INFO L471 AbstractCegarLoop]: Abstraction has 1411 states and 2335 transitions. [2024-12-02 14:45:10,303 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-12-02 14:45:10,303 INFO L276 IsEmpty]: Start isEmpty. Operand 1411 states and 2335 transitions. [2024-12-02 14:45:10,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-12-02 14:45:10,304 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:45:10,304 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:45:10,314 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a64374d7-cb2f-4e3c-9393-369c72ab6286/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 14:45:10,504 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a64374d7-cb2f-4e3c-9393-369c72ab6286/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-12-02 14:45:10,505 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:45:10,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:45:10,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1026570261, now seen corresponding path program 1 times [2024-12-02 14:45:10,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:45:10,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119290061] [2024-12-02 14:45:10,505 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:45:10,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:45:10,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:45:10,686 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 14:45:10,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:45:10,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119290061] [2024-12-02 14:45:10,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119290061] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:45:10,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:45:10,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 14:45:10,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868452] [2024-12-02 14:45:10,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:45:10,687 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 14:45:10,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:45:10,688 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 14:45:10,688 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:45:10,688 INFO L87 Difference]: Start difference. First operand 1411 states and 2335 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 5 states have internal predecessors, (54), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2024-12-02 14:45:11,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:45:11,268 INFO L93 Difference]: Finished difference Result 4169 states and 7048 transitions. [2024-12-02 14:45:11,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 14:45:11,269 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 5 states have internal predecessors, (54), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 74 [2024-12-02 14:45:11,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:45:11,294 INFO L225 Difference]: With dead ends: 4169 [2024-12-02 14:45:11,294 INFO L226 Difference]: Without dead ends: 2776 [2024-12-02 14:45:11,303 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 [2024-12-02 14:45:11,303 INFO L435 NwaCegarLoop]: 1009 mSDtfsCounter, 869 mSDsluCounter, 3620 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 880 SdHoareTripleChecker+Valid, 4629 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 14:45:11,303 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [880 Valid, 4629 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 14:45:11,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2776 states. [2024-12-02 14:45:11,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2776 to 2729. [2024-12-02 14:45:11,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2729 states, 2119 states have (on average 1.6672958942897593) internal successors, (3533), 2219 states have internal predecessors, (3533), 489 states have call successors, (489), 118 states have call predecessors, (489), 120 states have return successors, (595), 475 states have call predecessors, (595), 485 states have call successors, (595) [2024-12-02 14:45:11,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2729 states to 2729 states and 4617 transitions. [2024-12-02 14:45:11,460 INFO L78 Accepts]: Start accepts. Automaton has 2729 states and 4617 transitions. Word has length 74 [2024-12-02 14:45:11,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:45:11,461 INFO L471 AbstractCegarLoop]: Abstraction has 2729 states and 4617 transitions. [2024-12-02 14:45:11,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 5 states have internal predecessors, (54), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2024-12-02 14:45:11,461 INFO L276 IsEmpty]: Start isEmpty. Operand 2729 states and 4617 transitions. [2024-12-02 14:45:11,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-12-02 14:45:11,462 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:45:11,462 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:45:11,463 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 14:45:11,463 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:45:11,463 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:45:11,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1584509188, now seen corresponding path program 1 times [2024-12-02 14:45:11,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:45:11,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897935127] [2024-12-02 14:45:11,463 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:45:11,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:45:11,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:45:11,695 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 14:45:11,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:45:11,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897935127] [2024-12-02 14:45:11,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897935127] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:45:11,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [717456760] [2024-12-02 14:45:11,695 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:45:11,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:45:11,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a64374d7-cb2f-4e3c-9393-369c72ab6286/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:45:11,697 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a64374d7-cb2f-4e3c-9393-369c72ab6286/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:45:11,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a64374d7-cb2f-4e3c-9393-369c72ab6286/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 14:45:12,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:45:12,014 INFO L256 TraceCheckSpWp]: Trace formula consists of 1506 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-12-02 14:45:12,019 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:45:12,127 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:45:12,127 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:45:12,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [717456760] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:45:12,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:45:12,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2024-12-02 14:45:12,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36732663] [2024-12-02 14:45:12,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:45:12,127 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 14:45:12,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:45:12,128 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 14:45:12,128 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2024-12-02 14:45:12,128 INFO L87 Difference]: Start difference. First operand 2729 states and 4617 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2024-12-02 14:45:12,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:45:12,505 INFO L93 Difference]: Finished difference Result 7360 states and 12652 transitions. [2024-12-02 14:45:12,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 14:45:12,506 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) Word has length 75 [2024-12-02 14:45:12,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:45:12,572 INFO L225 Difference]: With dead ends: 7360 [2024-12-02 14:45:12,572 INFO L226 Difference]: Without dead ends: 4649 [2024-12-02 14:45:12,587 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2024-12-02 14:45:12,587 INFO L435 NwaCegarLoop]: 848 mSDtfsCounter, 741 mSDsluCounter, 2446 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 742 SdHoareTripleChecker+Valid, 3294 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 14:45:12,588 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [742 Valid, 3294 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 14:45:12,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4649 states. [2024-12-02 14:45:12,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4649 to 4606. [2024-12-02 14:45:12,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4606 states, 3574 states have (on average 1.6205931729155008) internal successors, (5792), 3740 states have internal predecessors, (5792), 814 states have call successors, (814), 210 states have call predecessors, (814), 217 states have return successors, (1100), 795 states have call predecessors, (1100), 808 states have call successors, (1100) [2024-12-02 14:45:12,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4606 states to 4606 states and 7706 transitions. [2024-12-02 14:45:12,897 INFO L78 Accepts]: Start accepts. Automaton has 4606 states and 7706 transitions. Word has length 75 [2024-12-02 14:45:12,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:45:12,898 INFO L471 AbstractCegarLoop]: Abstraction has 4606 states and 7706 transitions. [2024-12-02 14:45:12,898 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2024-12-02 14:45:12,898 INFO L276 IsEmpty]: Start isEmpty. Operand 4606 states and 7706 transitions. [2024-12-02 14:45:12,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-12-02 14:45:12,899 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:45:12,899 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:45:12,911 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a64374d7-cb2f-4e3c-9393-369c72ab6286/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 14:45:13,099 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a64374d7-cb2f-4e3c-9393-369c72ab6286/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-12-02 14:45:13,100 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:45:13,100 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:45:13,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1366844620, now seen corresponding path program 1 times [2024-12-02 14:45:13,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:45:13,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115496175] [2024-12-02 14:45:13,100 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:45:13,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:45:13,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:45:13,164 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 14:45:13,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:45:13,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115496175] [2024-12-02 14:45:13,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115496175] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:45:13,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:45:13,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 14:45:13,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858880022] [2024-12-02 14:45:13,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:45:13,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:45:13,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:45:13,166 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:45:13,166 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 14:45:13,166 INFO L87 Difference]: Start difference. First operand 4606 states and 7706 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-12-02 14:45:13,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:45:13,337 INFO L93 Difference]: Finished difference Result 9218 states and 15577 transitions. [2024-12-02 14:45:13,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:45:13,337 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 75 [2024-12-02 14:45:13,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:45:13,400 INFO L225 Difference]: With dead ends: 9218 [2024-12-02 14:45:13,401 INFO L226 Difference]: Without dead ends: 4630 [2024-12-02 14:45:13,413 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 [2024-12-02 14:45:13,414 INFO L435 NwaCegarLoop]: 858 mSDtfsCounter, 12 mSDsluCounter, 1691 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2549 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:45:13,414 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2549 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:45:13,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4630 states. [2024-12-02 14:45:13,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4630 to 4614. [2024-12-02 14:45:13,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4614 states, 3580 states have (on average 1.6189944134078211) internal successors, (5796), 3746 states have internal predecessors, (5796), 814 states have call successors, (814), 214 states have call predecessors, (814), 219 states have return successors, (1087), 793 states have call predecessors, (1087), 808 states have call successors, (1087) [2024-12-02 14:45:13,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4614 states to 4614 states and 7697 transitions. [2024-12-02 14:45:13,546 INFO L78 Accepts]: Start accepts. Automaton has 4614 states and 7697 transitions. Word has length 75 [2024-12-02 14:45:13,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:45:13,547 INFO L471 AbstractCegarLoop]: Abstraction has 4614 states and 7697 transitions. [2024-12-02 14:45:13,548 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-12-02 14:45:13,548 INFO L276 IsEmpty]: Start isEmpty. Operand 4614 states and 7697 transitions. [2024-12-02 14:45:13,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-12-02 14:45:13,549 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:45:13,550 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:45:13,550 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-02 14:45:13,550 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:45:13,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:45:13,550 INFO L85 PathProgramCache]: Analyzing trace with hash 309004933, now seen corresponding path program 1 times [2024-12-02 14:45:13,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:45:13,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920592991] [2024-12-02 14:45:13,551 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:45:13,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:45:13,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:45:13,663 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-02 14:45:13,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:45:13,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920592991] [2024-12-02 14:45:13,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920592991] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:45:13,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:45:13,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 14:45:13,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254327123] [2024-12-02 14:45:13,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:45:13,664 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 14:45:13,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:45:13,664 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 14:45:13,664 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:45:13,665 INFO L87 Difference]: Start difference. First operand 4614 states and 7697 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2024-12-02 14:45:14,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:45:14,394 INFO L93 Difference]: Finished difference Result 13793 states and 23849 transitions. [2024-12-02 14:45:14,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 14:45:14,395 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) Word has length 83 [2024-12-02 14:45:14,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:45:14,474 INFO L225 Difference]: With dead ends: 13793 [2024-12-02 14:45:14,474 INFO L226 Difference]: Without dead ends: 9197 [2024-12-02 14:45:14,501 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 [2024-12-02 14:45:14,501 INFO L435 NwaCegarLoop]: 946 mSDtfsCounter, 866 mSDsluCounter, 3439 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 874 SdHoareTripleChecker+Valid, 4385 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 14:45:14,502 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [874 Valid, 4385 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 14:45:14,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9197 states. [2024-12-02 14:45:14,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9197 to 9128. [2024-12-02 14:45:14,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9128 states, 7090 states have (on average 1.616784203102962) internal successors, (11463), 7416 states have internal predecessors, (11463), 1600 states have call successors, (1600), 422 states have call predecessors, (1600), 437 states have return successors, (2611), 1569 states have call predecessors, (2611), 1590 states have call successors, (2611) [2024-12-02 14:45:14,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9128 states to 9128 states and 15674 transitions. [2024-12-02 14:45:14,854 INFO L78 Accepts]: Start accepts. Automaton has 9128 states and 15674 transitions. Word has length 83 [2024-12-02 14:45:14,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:45:14,855 INFO L471 AbstractCegarLoop]: Abstraction has 9128 states and 15674 transitions. [2024-12-02 14:45:14,855 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2024-12-02 14:45:14,855 INFO L276 IsEmpty]: Start isEmpty. Operand 9128 states and 15674 transitions. [2024-12-02 14:45:14,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-12-02 14:45:14,856 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:45:14,856 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:45:14,856 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-12-02 14:45:14,856 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:45:14,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:45:14,857 INFO L85 PathProgramCache]: Analyzing trace with hash -215545180, now seen corresponding path program 1 times [2024-12-02 14:45:14,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:45:14,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991194495] [2024-12-02 14:45:14,857 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:45:14,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:45:14,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:45:14,914 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 14:45:14,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:45:14,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991194495] [2024-12-02 14:45:14,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991194495] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:45:14,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:45:14,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 14:45:14,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065860192] [2024-12-02 14:45:14,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:45:14,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:45:14,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:45:14,915 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:45:14,915 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 14:45:14,915 INFO L87 Difference]: Start difference. First operand 9128 states and 15674 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-12-02 14:45:15,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:45:15,491 INFO L93 Difference]: Finished difference Result 18310 states and 31901 transitions. [2024-12-02 14:45:15,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:45:15,492 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 84 [2024-12-02 14:45:15,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:45:15,569 INFO L225 Difference]: With dead ends: 18310 [2024-12-02 14:45:15,569 INFO L226 Difference]: Without dead ends: 9200 [2024-12-02 14:45:15,616 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 [2024-12-02 14:45:15,616 INFO L435 NwaCegarLoop]: 855 mSDtfsCounter, 12 mSDsluCounter, 1688 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2543 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 [2024-12-02 14:45:15,616 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2543 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:45:15,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9200 states. [2024-12-02 14:45:15,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9200 to 9168. [2024-12-02 14:45:15,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9168 states, 7126 states have (on average 1.614229581813079) internal successors, (11503), 7444 states have internal predecessors, (11503), 1600 states have call successors, (1600), 438 states have call predecessors, (1600), 441 states have return successors, (2591), 1565 states have call predecessors, (2591), 1590 states have call successors, (2591) [2024-12-02 14:45:16,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9168 states to 9168 states and 15694 transitions. [2024-12-02 14:45:16,052 INFO L78 Accepts]: Start accepts. Automaton has 9168 states and 15694 transitions. Word has length 84 [2024-12-02 14:45:16,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:45:16,052 INFO L471 AbstractCegarLoop]: Abstraction has 9168 states and 15694 transitions. [2024-12-02 14:45:16,052 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-12-02 14:45:16,053 INFO L276 IsEmpty]: Start isEmpty. Operand 9168 states and 15694 transitions. [2024-12-02 14:45:16,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-12-02 14:45:16,054 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:45:16,055 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:45:16,055 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-12-02 14:45:16,055 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:45:16,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:45:16,055 INFO L85 PathProgramCache]: Analyzing trace with hash 72892810, now seen corresponding path program 1 times [2024-12-02 14:45:16,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:45:16,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578377007] [2024-12-02 14:45:16,055 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:45:16,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:45:16,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:45:16,209 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-02 14:45:16,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:45:16,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578377007] [2024-12-02 14:45:16,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578377007] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:45:16,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:45:16,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 14:45:16,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386431745] [2024-12-02 14:45:16,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:45:16,210 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 14:45:16,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:45:16,211 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 14:45:16,211 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:45:16,211 INFO L87 Difference]: Start difference. First operand 9168 states and 15694 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2024-12-02 14:45:17,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:45:17,275 INFO L93 Difference]: Finished difference Result 27527 states and 49686 transitions. [2024-12-02 14:45:17,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 14:45:17,276 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 93 [2024-12-02 14:45:17,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:45:17,443 INFO L225 Difference]: With dead ends: 27527 [2024-12-02 14:45:17,443 INFO L226 Difference]: Without dead ends: 18377 [2024-12-02 14:45:17,507 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 [2024-12-02 14:45:17,507 INFO L435 NwaCegarLoop]: 978 mSDtfsCounter, 862 mSDsluCounter, 3543 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 868 SdHoareTripleChecker+Valid, 4521 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 14:45:17,507 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [868 Valid, 4521 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 14:45:17,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18377 states. [2024-12-02 14:45:18,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18377 to 18276. [2024-12-02 14:45:18,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18276 states, 14212 states have (on average 1.611384745285674) internal successors, (22901), 14842 states have internal predecessors, (22901), 3178 states have call successors, (3178), 870 states have call predecessors, (3178), 885 states have return successors, (6613), 3123 states have call predecessors, (6613), 3160 states have call successors, (6613) [2024-12-02 14:45:18,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18276 states to 18276 states and 32692 transitions. [2024-12-02 14:45:18,407 INFO L78 Accepts]: Start accepts. Automaton has 18276 states and 32692 transitions. Word has length 93 [2024-12-02 14:45:18,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:45:18,407 INFO L471 AbstractCegarLoop]: Abstraction has 18276 states and 32692 transitions. [2024-12-02 14:45:18,407 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2024-12-02 14:45:18,407 INFO L276 IsEmpty]: Start isEmpty. Operand 18276 states and 32692 transitions. [2024-12-02 14:45:18,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-12-02 14:45:18,409 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:45:18,409 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:45:18,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-12-02 14:45:18,409 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:45:18,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:45:18,410 INFO L85 PathProgramCache]: Analyzing trace with hash 242212487, now seen corresponding path program 1 times [2024-12-02 14:45:18,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:45:18,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752648480] [2024-12-02 14:45:18,410 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:45:18,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:45:18,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:45:18,494 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-12-02 14:45:18,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:45:18,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752648480] [2024-12-02 14:45:18,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752648480] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:45:18,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:45:18,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 14:45:18,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864745306] [2024-12-02 14:45:18,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:45:18,495 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:45:18,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:45:18,495 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:45:18,495 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 14:45:18,496 INFO L87 Difference]: Start difference. First operand 18276 states and 32692 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-12-02 14:45:19,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:45:19,255 INFO L93 Difference]: Finished difference Result 36678 states and 67179 transitions. [2024-12-02 14:45:19,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:45:19,256 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 94 [2024-12-02 14:45:19,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:45:19,351 INFO L225 Difference]: With dead ends: 36678 [2024-12-02 14:45:19,351 INFO L226 Difference]: Without dead ends: 18420 [2024-12-02 14:45:19,423 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 [2024-12-02 14:45:19,423 INFO L435 NwaCegarLoop]: 856 mSDtfsCounter, 11 mSDsluCounter, 1690 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2546 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 [2024-12-02 14:45:19,423 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2546 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:45:19,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18420 states. [2024-12-02 14:45:19,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18420 to 18356. [2024-12-02 14:45:19,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18356 states, 14284 states have (on average 1.6088630635676282) internal successors, (22981), 14914 states have internal predecessors, (22981), 3178 states have call successors, (3178), 886 states have call predecessors, (3178), 893 states have return successors, (6585), 3115 states have call predecessors, (6585), 3160 states have call successors, (6585) [2024-12-02 14:45:20,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18356 states to 18356 states and 32744 transitions. [2024-12-02 14:45:20,042 INFO L78 Accepts]: Start accepts. Automaton has 18356 states and 32744 transitions. Word has length 94 [2024-12-02 14:45:20,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:45:20,042 INFO L471 AbstractCegarLoop]: Abstraction has 18356 states and 32744 transitions. [2024-12-02 14:45:20,042 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-12-02 14:45:20,042 INFO L276 IsEmpty]: Start isEmpty. Operand 18356 states and 32744 transitions. [2024-12-02 14:45:20,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-12-02 14:45:20,044 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:45:20,045 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:45:20,045 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-12-02 14:45:20,045 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:45:20,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:45:20,045 INFO L85 PathProgramCache]: Analyzing trace with hash -78150672, now seen corresponding path program 1 times [2024-12-02 14:45:20,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:45:20,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210428022] [2024-12-02 14:45:20,045 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:45:20,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:45:20,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:45:20,151 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-12-02 14:45:20,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:45:20,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210428022] [2024-12-02 14:45:20,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210428022] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:45:20,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:45:20,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 14:45:20,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113370046] [2024-12-02 14:45:20,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:45:20,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 14:45:20,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:45:20,153 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 14:45:20,153 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:45:20,153 INFO L87 Difference]: Start difference. First operand 18356 states and 32744 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2024-12-02 14:45:21,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:45:21,936 INFO L93 Difference]: Finished difference Result 55211 states and 107024 transitions. [2024-12-02 14:45:21,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 14:45:21,937 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) Word has length 104 [2024-12-02 14:45:21,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:45:22,264 INFO L225 Difference]: With dead ends: 55211 [2024-12-02 14:45:22,264 INFO L226 Difference]: Without dead ends: 36873 [2024-12-02 14:45:22,426 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 [2024-12-02 14:45:22,426 INFO L435 NwaCegarLoop]: 935 mSDtfsCounter, 858 mSDsluCounter, 3425 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 862 SdHoareTripleChecker+Valid, 4360 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 14:45:22,426 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [862 Valid, 4360 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 14:45:22,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36873 states. [2024-12-02 14:45:24,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36873 to 36708. [2024-12-02 14:45:24,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36708 states, 28570 states have (on average 1.6065453272663632) internal successors, (45899), 29824 states have internal predecessors, (45899), 6340 states have call successors, (6340), 1766 states have call predecessors, (6340), 1797 states have return successors, (18131), 6237 states have call predecessors, (18131), 6306 states have call successors, (18131) [2024-12-02 14:45:24,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36708 states to 36708 states and 70370 transitions. [2024-12-02 14:45:24,434 INFO L78 Accepts]: Start accepts. Automaton has 36708 states and 70370 transitions. Word has length 104 [2024-12-02 14:45:24,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:45:24,435 INFO L471 AbstractCegarLoop]: Abstraction has 36708 states and 70370 transitions. [2024-12-02 14:45:24,435 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2024-12-02 14:45:24,435 INFO L276 IsEmpty]: Start isEmpty. Operand 36708 states and 70370 transitions. [2024-12-02 14:45:24,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-12-02 14:45:24,437 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:45:24,437 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:45:24,437 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-12-02 14:45:24,437 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:45:24,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:45:24,437 INFO L85 PathProgramCache]: Analyzing trace with hash -957869271, now seen corresponding path program 1 times [2024-12-02 14:45:24,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:45:24,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544481854] [2024-12-02 14:45:24,438 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:45:24,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:45:24,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:45:24,499 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-12-02 14:45:24,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:45:24,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544481854] [2024-12-02 14:45:24,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544481854] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:45:24,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:45:24,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 14:45:24,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385300094] [2024-12-02 14:45:24,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:45:24,500 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:45:24,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:45:24,501 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:45:24,501 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 14:45:24,501 INFO L87 Difference]: Start difference. First operand 36708 states and 70370 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-12-02 14:45:25,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:45:25,823 INFO L93 Difference]: Finished difference Result 73718 states and 146965 transitions. [2024-12-02 14:45:25,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:45:25,824 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 105 [2024-12-02 14:45:25,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:45:26,074 INFO L225 Difference]: With dead ends: 73718 [2024-12-02 14:45:26,074 INFO L226 Difference]: Without dead ends: 37028 [2024-12-02 14:45:26,309 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 [2024-12-02 14:45:26,310 INFO L435 NwaCegarLoop]: 855 mSDtfsCounter, 9 mSDsluCounter, 1688 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 2543 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:45:26,310 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 2543 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:45:26,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37028 states. [2024-12-02 14:45:27,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37028 to 36900. [2024-12-02 14:45:27,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36900 states, 28746 states have (on average 1.603388297502261) internal successors, (46091), 30000 states have internal predecessors, (46091), 6340 states have call successors, (6340), 1798 states have call predecessors, (6340), 1813 states have return successors, (18099), 6221 states have call predecessors, (18099), 6306 states have call successors, (18099) [2024-12-02 14:45:27,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36900 states to 36900 states and 70530 transitions. [2024-12-02 14:45:27,812 INFO L78 Accepts]: Start accepts. Automaton has 36900 states and 70530 transitions. Word has length 105 [2024-12-02 14:45:27,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:45:27,812 INFO L471 AbstractCegarLoop]: Abstraction has 36900 states and 70530 transitions. [2024-12-02 14:45:27,812 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-12-02 14:45:27,813 INFO L276 IsEmpty]: Start isEmpty. Operand 36900 states and 70530 transitions. [2024-12-02 14:45:27,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-12-02 14:45:27,816 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:45:27,816 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] [2024-12-02 14:45:27,816 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-12-02 14:45:27,816 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:45:27,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:45:27,816 INFO L85 PathProgramCache]: Analyzing trace with hash -530987954, now seen corresponding path program 1 times [2024-12-02 14:45:27,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:45:27,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110557334] [2024-12-02 14:45:27,817 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:45:27,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:45:27,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:45:28,157 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-12-02 14:45:28,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:45:28,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110557334] [2024-12-02 14:45:28,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110557334] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:45:28,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994899647] [2024-12-02 14:45:28,157 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:45:28,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:45:28,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a64374d7-cb2f-4e3c-9393-369c72ab6286/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:45:28,159 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a64374d7-cb2f-4e3c-9393-369c72ab6286/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:45:28,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a64374d7-cb2f-4e3c-9393-369c72ab6286/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 14:45:28,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:45:28,462 INFO L256 TraceCheckSpWp]: Trace formula consists of 1862 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-12-02 14:45:28,466 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:45:28,674 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-12-02 14:45:28,674 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:45:28,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1994899647] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:45:28,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:45:28,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2024-12-02 14:45:28,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243163304] [2024-12-02 14:45:28,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:45:28,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 14:45:28,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:45:28,675 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 14:45:28,676 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2024-12-02 14:45:28,676 INFO L87 Difference]: Start difference. First operand 36900 states and 70530 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 4 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2024-12-02 14:45:36,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:45:36,084 INFO L93 Difference]: Finished difference Result 132097 states and 276773 transitions. [2024-12-02 14:45:36,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-12-02 14:45:36,085 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 4 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) Word has length 140 [2024-12-02 14:45:36,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:45:36,945 INFO L225 Difference]: With dead ends: 132097 [2024-12-02 14:45:36,945 INFO L226 Difference]: Without dead ends: 95215 [2024-12-02 14:45:37,207 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2024-12-02 14:45:37,209 INFO L435 NwaCegarLoop]: 637 mSDtfsCounter, 3014 mSDsluCounter, 1783 mSDsCounter, 0 mSdLazyCounter, 6413 mSolverCounterSat, 637 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3181 SdHoareTripleChecker+Valid, 2420 SdHoareTripleChecker+Invalid, 7050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 637 IncrementalHoareTripleChecker+Valid, 6413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-12-02 14:45:37,209 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3181 Valid, 2420 Invalid, 7050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [637 Valid, 6413 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-12-02 14:45:37,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95215 states. [2024-12-02 14:45:40,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95215 to 93942. [2024-12-02 14:45:40,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93942 states, 73272 states have (on average 1.595520799213888) internal successors, (116907), 76310 states have internal predecessors, (116907), 15880 states have call successors, (15880), 4502 states have call predecessors, (15880), 4789 states have return successors, (58117), 15865 states have call predecessors, (58117), 15814 states have call successors, (58117) [2024-12-02 14:45:41,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93942 states to 93942 states and 190904 transitions. [2024-12-02 14:45:41,752 INFO L78 Accepts]: Start accepts. Automaton has 93942 states and 190904 transitions. Word has length 140 [2024-12-02 14:45:41,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:45:41,752 INFO L471 AbstractCegarLoop]: Abstraction has 93942 states and 190904 transitions. [2024-12-02 14:45:41,752 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 4 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2024-12-02 14:45:41,752 INFO L276 IsEmpty]: Start isEmpty. Operand 93942 states and 190904 transitions. [2024-12-02 14:45:41,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-12-02 14:45:41,753 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:45:41,753 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:45:41,760 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a64374d7-cb2f-4e3c-9393-369c72ab6286/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 14:45:41,954 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a64374d7-cb2f-4e3c-9393-369c72ab6286/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-12-02 14:45:41,954 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:45:41,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:45:41,954 INFO L85 PathProgramCache]: Analyzing trace with hash 182042629, now seen corresponding path program 1 times [2024-12-02 14:45:41,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:45:41,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413665327] [2024-12-02 14:45:41,954 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:45:41,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:45:41,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:45:42,094 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-12-02 14:45:42,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:45:42,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413665327] [2024-12-02 14:45:42,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413665327] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:45:42,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:45:42,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 14:45:42,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801331465] [2024-12-02 14:45:42,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:45:42,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 14:45:42,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:45:42,095 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 14:45:42,095 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 14:45:42,095 INFO L87 Difference]: Start difference. First operand 93942 states and 190904 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 4 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2024-12-02 14:45:47,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:45:47,494 INFO L93 Difference]: Finished difference Result 191385 states and 400412 transitions. [2024-12-02 14:45:47,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 14:45:47,495 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 4 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 116 [2024-12-02 14:45:47,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:45:48,389 INFO L225 Difference]: With dead ends: 191385 [2024-12-02 14:45:48,389 INFO L226 Difference]: Without dead ends: 97413 [2024-12-02 14:45:49,542 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:45:49,542 INFO L435 NwaCegarLoop]: 914 mSDtfsCounter, 733 mSDsluCounter, 2592 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 737 SdHoareTripleChecker+Valid, 3506 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 14:45:49,542 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [737 Valid, 3506 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 14:45:49,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97413 states. [2024-12-02 14:45:52,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97413 to 97128. [2024-12-02 14:45:52,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97128 states, 75794 states have (on average 1.587882945879621) internal successors, (120352), 78907 states have internal predecessors, (120352), 16385 states have call successors, (16385), 4676 states have call predecessors, (16385), 4948 states have return successors, (58813), 16278 states have call predecessors, (58813), 16319 states have call successors, (58813) [2024-12-02 14:45:53,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97128 states to 97128 states and 195550 transitions. [2024-12-02 14:45:53,795 INFO L78 Accepts]: Start accepts. Automaton has 97128 states and 195550 transitions. Word has length 116 [2024-12-02 14:45:53,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:45:53,795 INFO L471 AbstractCegarLoop]: Abstraction has 97128 states and 195550 transitions. [2024-12-02 14:45:53,796 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 4 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2024-12-02 14:45:53,796 INFO L276 IsEmpty]: Start isEmpty. Operand 97128 states and 195550 transitions. [2024-12-02 14:45:53,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-12-02 14:45:53,799 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:45:53,799 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 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, 1, 1] [2024-12-02 14:45:53,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-12-02 14:45:53,799 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:45:53,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:45:53,800 INFO L85 PathProgramCache]: Analyzing trace with hash 2061804919, now seen corresponding path program 1 times [2024-12-02 14:45:53,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:45:53,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312939886] [2024-12-02 14:45:53,800 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:45:53,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:45:53,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:45:54,046 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-12-02 14:45:54,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:45:54,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312939886] [2024-12-02 14:45:54,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312939886] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:45:54,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:45:54,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 14:45:54,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963143098] [2024-12-02 14:45:54,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:45:54,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 14:45:54,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:45:54,047 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 14:45:54,047 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:45:54,047 INFO L87 Difference]: Start difference. First operand 97128 states and 195550 transitions. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 5 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) [2024-12-02 14:46:07,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:46:07,038 INFO L93 Difference]: Finished difference Result 294370 states and 689590 transitions. [2024-12-02 14:46:07,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 14:46:07,039 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 5 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) Word has length 166 [2024-12-02 14:46:07,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:46:09,012 INFO L225 Difference]: With dead ends: 294370 [2024-12-02 14:46:09,012 INFO L226 Difference]: Without dead ends: 197260 [2024-12-02 14:46:10,228 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2024-12-02 14:46:10,229 INFO L435 NwaCegarLoop]: 675 mSDtfsCounter, 2110 mSDsluCounter, 1707 mSDsCounter, 0 mSdLazyCounter, 4127 mSolverCounterSat, 694 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2199 SdHoareTripleChecker+Valid, 2382 SdHoareTripleChecker+Invalid, 4821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 694 IncrementalHoareTripleChecker+Valid, 4127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-12-02 14:46:10,229 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2199 Valid, 2382 Invalid, 4821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [694 Valid, 4127 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-12-02 14:46:10,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197260 states. [2024-12-02 14:46:20,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197260 to 186957. [2024-12-02 14:46:20,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186957 states, 138625 states have (on average 1.5198845807033363) internal successors, (210694), 146251 states have internal predecessors, (210694), 38951 states have call successors, (38951), 8388 states have call predecessors, (38951), 9380 states have return successors, (145628), 39275 states have call predecessors, (145628), 38837 states have call successors, (145628) [2024-12-02 14:46:22,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186957 states to 186957 states and 395273 transitions. [2024-12-02 14:46:23,022 INFO L78 Accepts]: Start accepts. Automaton has 186957 states and 395273 transitions. Word has length 166 [2024-12-02 14:46:23,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:46:23,023 INFO L471 AbstractCegarLoop]: Abstraction has 186957 states and 395273 transitions. [2024-12-02 14:46:23,023 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 5 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) [2024-12-02 14:46:23,023 INFO L276 IsEmpty]: Start isEmpty. Operand 186957 states and 395273 transitions. [2024-12-02 14:46:23,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2024-12-02 14:46:23,027 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:46:23,027 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:46:23,028 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-12-02 14:46:23,028 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:46:23,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:46:23,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1756950388, now seen corresponding path program 1 times [2024-12-02 14:46:23,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:46:23,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16186403] [2024-12-02 14:46:23,028 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:46:23,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:46:23,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:46:23,329 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 24 proven. 32 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2024-12-02 14:46:23,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:46:23,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16186403] [2024-12-02 14:46:23,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16186403] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:46:23,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119284009] [2024-12-02 14:46:23,330 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:46:23,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:46:23,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a64374d7-cb2f-4e3c-9393-369c72ab6286/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:46:23,332 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a64374d7-cb2f-4e3c-9393-369c72ab6286/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:46:23,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a64374d7-cb2f-4e3c-9393-369c72ab6286/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 14:46:23,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:46:23,749 INFO L256 TraceCheckSpWp]: Trace formula consists of 2509 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-02 14:46:23,753 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:46:23,993 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 147 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2024-12-02 14:46:23,993 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:46:23,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119284009] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:46:23,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:46:23,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2024-12-02 14:46:23,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148948794] [2024-12-02 14:46:23,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:46:23,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 14:46:23,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:46:23,995 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 14:46:23,995 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-12-02 14:46:23,995 INFO L87 Difference]: Start difference. First operand 186957 states and 395273 transitions. Second operand has 6 states, 6 states have (on average 23.333333333333332) internal successors, (140), 5 states have internal predecessors, (140), 3 states have call successors, (26), 4 states have call predecessors, (26), 4 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2024-12-02 14:46:47,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:46:47,013 INFO L93 Difference]: Finished difference Result 532274 states and 1108785 transitions. [2024-12-02 14:46:47,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 14:46:47,014 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.333333333333332) internal successors, (140), 5 states have internal predecessors, (140), 3 states have call successors, (26), 4 states have call predecessors, (26), 4 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 225 [2024-12-02 14:46:47,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:46:50,214 INFO L225 Difference]: With dead ends: 532274 [2024-12-02 14:46:50,215 INFO L226 Difference]: Without dead ends: 345283 [2024-12-02 14:46:52,100 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-12-02 14:46:52,101 INFO L435 NwaCegarLoop]: 755 mSDtfsCounter, 3189 mSDsluCounter, 959 mSDsCounter, 0 mSdLazyCounter, 3101 mSolverCounterSat, 579 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3379 SdHoareTripleChecker+Valid, 1714 SdHoareTripleChecker+Invalid, 3680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 579 IncrementalHoareTripleChecker+Valid, 3101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-12-02 14:46:52,101 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3379 Valid, 1714 Invalid, 3680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [579 Valid, 3101 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-12-02 14:46:52,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345283 states. [2024-12-02 14:47:08,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345283 to 313025. [2024-12-02 14:47:08,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313025 states, 237828 states have (on average 1.5169744521250652) internal successors, (360779), 246172 states have internal predecessors, (360779), 59428 states have call successors, (59428), 13243 states have call predecessors, (59428), 15768 states have return successors, (210962), 59449 states have call predecessors, (210962), 59307 states have call successors, (210962) [2024-12-02 14:47:12,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313025 states to 313025 states and 631169 transitions. [2024-12-02 14:47:12,366 INFO L78 Accepts]: Start accepts. Automaton has 313025 states and 631169 transitions. Word has length 225 [2024-12-02 14:47:12,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:47:12,367 INFO L471 AbstractCegarLoop]: Abstraction has 313025 states and 631169 transitions. [2024-12-02 14:47:12,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.333333333333332) internal successors, (140), 5 states have internal predecessors, (140), 3 states have call successors, (26), 4 states have call predecessors, (26), 4 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2024-12-02 14:47:12,367 INFO L276 IsEmpty]: Start isEmpty. Operand 313025 states and 631169 transitions. [2024-12-02 14:47:12,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2024-12-02 14:47:12,380 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:47:12,380 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:47:12,390 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a64374d7-cb2f-4e3c-9393-369c72ab6286/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-12-02 14:47:12,580 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a64374d7-cb2f-4e3c-9393-369c72ab6286/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-12-02 14:47:12,581 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:47:12,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:47:12,581 INFO L85 PathProgramCache]: Analyzing trace with hash 566181428, now seen corresponding path program 1 times [2024-12-02 14:47:12,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:47:12,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596384616] [2024-12-02 14:47:12,581 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:47:12,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:47:12,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:47:13,016 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-12-02 14:47:13,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:47:13,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596384616] [2024-12-02 14:47:13,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596384616] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:47:13,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776736711] [2024-12-02 14:47:13,016 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:47:13,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:47:13,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a64374d7-cb2f-4e3c-9393-369c72ab6286/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:47:13,018 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a64374d7-cb2f-4e3c-9393-369c72ab6286/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:47:13,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a64374d7-cb2f-4e3c-9393-369c72ab6286/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 14:47:13,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:47:13,349 INFO L256 TraceCheckSpWp]: Trace formula consists of 2449 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-12-02 14:47:13,353 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:47:13,473 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-12-02 14:47:13,473 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:47:13,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1776736711] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:47:13,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:47:13,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13] total 18 [2024-12-02 14:47:13,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629331194] [2024-12-02 14:47:13,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:47:13,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 14:47:13,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:47:13,474 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 14:47:13,475 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2024-12-02 14:47:13,475 INFO L87 Difference]: Start difference. First operand 313025 states and 631169 transitions. Second operand has 7 states, 7 states have (on average 19.428571428571427) internal successors, (136), 7 states have internal predecessors, (136), 5 states have call successors, (25), 4 states have call predecessors, (25), 5 states have return successors, (23), 5 states have call predecessors, (23), 5 states have call successors, (23)