./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec3_product28.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_90657ff5-8646-442d-9b44-6800f6183d13/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90657ff5-8646-442d-9b44-6800f6183d13/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_90657ff5-8646-442d-9b44-6800f6183d13/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90657ff5-8646-442d-9b44-6800f6183d13/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product28.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90657ff5-8646-442d-9b44-6800f6183d13/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_90657ff5-8646-442d-9b44-6800f6183d13/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 cb2818f0d8bce3a3c55c338823c603b0097898f29d2ecfaf46bb61225da928d8 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 06:04:57,509 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 06:04:57,568 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90657ff5-8646-442d-9b44-6800f6183d13/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 06:04:57,573 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 06:04:57,573 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 06:04:57,596 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 06:04:57,597 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 06:04:57,597 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 06:04:57,597 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 06:04:57,598 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 06:04:57,598 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 06:04:57,598 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 06:04:57,598 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 06:04:57,598 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 06:04:57,598 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 06:04:57,598 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 06:04:57,599 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 06:04:57,599 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 06:04:57,599 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 06:04:57,599 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 06:04:57,599 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 06:04:57,599 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 06:04:57,599 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 06:04:57,599 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 06:04:57,599 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 06:04:57,599 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 06:04:57,599 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 06:04:57,600 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 06:04:57,600 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 06:04:57,600 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 06:04:57,600 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 06:04:57,600 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 06:04:57,600 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 06:04:57,600 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 06:04:57,600 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 06:04:57,600 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 06:04:57,600 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 06:04:57,600 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 06:04:57,601 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 06:04:57,601 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 06:04:57,601 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 06:04:57,601 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 06:04:57,601 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 06:04:57,601 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 06:04:57,601 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 06:04:57,601 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 06:04:57,601 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 06:04:57,601 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 06:04:57,601 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_90657ff5-8646-442d-9b44-6800f6183d13/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 -> cb2818f0d8bce3a3c55c338823c603b0097898f29d2ecfaf46bb61225da928d8 [2024-12-02 06:04:57,827 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 06:04:57,835 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 06:04:57,837 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 06:04:57,838 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 06:04:57,839 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 06:04:57,840 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90657ff5-8646-442d-9b44-6800f6183d13/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/product-lines/elevator_spec3_product28.cil.c [2024-12-02 06:05:00,543 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90657ff5-8646-442d-9b44-6800f6183d13/bin/uautomizer-verify-84ZbGMXZE1/data/a1c19d3fa/984dc4b999e8456d912611d1d69af6a4/FLAGccbd27ac7 [2024-12-02 06:05:00,841 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 06:05:00,841 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90657ff5-8646-442d-9b44-6800f6183d13/sv-benchmarks/c/product-lines/elevator_spec3_product28.cil.c [2024-12-02 06:05:00,860 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90657ff5-8646-442d-9b44-6800f6183d13/bin/uautomizer-verify-84ZbGMXZE1/data/a1c19d3fa/984dc4b999e8456d912611d1d69af6a4/FLAGccbd27ac7 [2024-12-02 06:05:00,874 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90657ff5-8646-442d-9b44-6800f6183d13/bin/uautomizer-verify-84ZbGMXZE1/data/a1c19d3fa/984dc4b999e8456d912611d1d69af6a4 [2024-12-02 06:05:00,876 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 06:05:00,878 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 06:05:00,879 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 06:05:00,879 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 06:05:00,883 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 06:05:00,884 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:05:00" (1/1) ... [2024-12-02 06:05:00,885 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a8491e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:05:00, skipping insertion in model container [2024-12-02 06:05:00,885 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:05:00" (1/1) ... [2024-12-02 06:05:00,929 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 06:05:01,363 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_90657ff5-8646-442d-9b44-6800f6183d13/sv-benchmarks/c/product-lines/elevator_spec3_product28.cil.c[73221,73234] [2024-12-02 06:05:01,370 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 06:05:01,382 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 06:05:01,391 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification3_spec.i","") [48] [2024-12-02 06:05:01,392 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [242] [2024-12-02 06:05:01,393 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [1847] [2024-12-02 06:05:01,393 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [2213] [2024-12-02 06:05:01,393 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [2231] [2024-12-02 06:05:01,393 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [2350] [2024-12-02 06:05:01,393 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [2703] [2024-12-02 06:05:01,393 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [3364] [2024-12-02 06:05:01,393 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [3455] [2024-12-02 06:05:01,394 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [3464] [2024-12-02 06:05:01,488 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_90657ff5-8646-442d-9b44-6800f6183d13/sv-benchmarks/c/product-lines/elevator_spec3_product28.cil.c[73221,73234] [2024-12-02 06:05:01,489 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 06:05:01,514 INFO L204 MainTranslator]: Completed translation [2024-12-02 06:05:01,515 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:05:01 WrapperNode [2024-12-02 06:05:01,515 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 06:05:01,516 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 06:05:01,516 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 06:05:01,516 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 06:05:01,522 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:05:01" (1/1) ... [2024-12-02 06:05:01,543 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:05:01" (1/1) ... [2024-12-02 06:05:01,580 INFO L138 Inliner]: procedures = 95, calls = 354, calls flagged for inlining = 27, calls inlined = 23, statements flattened = 1154 [2024-12-02 06:05:01,581 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 06:05:01,581 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 06:05:01,581 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 06:05:01,581 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 06:05:01,591 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:05:01" (1/1) ... [2024-12-02 06:05:01,591 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:05:01" (1/1) ... [2024-12-02 06:05:01,596 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:05:01" (1/1) ... [2024-12-02 06:05:01,620 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 06:05:01,620 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:05:01" (1/1) ... [2024-12-02 06:05:01,620 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:05:01" (1/1) ... [2024-12-02 06:05:01,639 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:05:01" (1/1) ... [2024-12-02 06:05:01,642 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:05:01" (1/1) ... [2024-12-02 06:05:01,654 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:05:01" (1/1) ... [2024-12-02 06:05:01,660 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:05:01" (1/1) ... [2024-12-02 06:05:01,664 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:05:01" (1/1) ... [2024-12-02 06:05:01,685 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 06:05:01,686 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 06:05:01,686 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 06:05:01,686 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 06:05:01,687 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:05:01" (1/1) ... [2024-12-02 06:05:01,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 06:05:01,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90657ff5-8646-442d-9b44-6800f6183d13/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:05:01,716 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90657ff5-8646-442d-9b44-6800f6183d13/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 06:05:01,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90657ff5-8646-442d-9b44-6800f6183d13/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 06:05:01,745 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 06:05:01,745 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2024-12-02 06:05:01,745 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2024-12-02 06:05:01,745 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2024-12-02 06:05:01,745 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2024-12-02 06:05:01,745 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-12-02 06:05:01,745 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-12-02 06:05:01,745 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2024-12-02 06:05:01,745 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2024-12-02 06:05:01,745 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-12-02 06:05:01,745 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-12-02 06:05:01,745 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2024-12-02 06:05:01,746 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2024-12-02 06:05:01,746 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-12-02 06:05:01,746 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-12-02 06:05:01,746 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-12-02 06:05:01,746 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-12-02 06:05:01,746 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-12-02 06:05:01,746 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-12-02 06:05:01,746 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-12-02 06:05:01,746 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-12-02 06:05:01,746 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-12-02 06:05:01,746 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-12-02 06:05:01,746 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-12-02 06:05:01,746 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-12-02 06:05:01,746 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-12-02 06:05:01,747 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-12-02 06:05:01,747 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2024-12-02 06:05:01,747 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2024-12-02 06:05:01,747 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2024-12-02 06:05:01,747 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2024-12-02 06:05:01,747 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-12-02 06:05:01,747 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-12-02 06:05:01,747 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2024-12-02 06:05:01,747 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2024-12-02 06:05:01,747 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-12-02 06:05:01,747 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-12-02 06:05:01,747 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2024-12-02 06:05:01,747 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2024-12-02 06:05:01,747 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-12-02 06:05:01,747 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-12-02 06:05:01,747 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-12-02 06:05:01,747 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-12-02 06:05:01,748 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-12-02 06:05:01,748 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-12-02 06:05:01,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 06:05:01,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 06:05:01,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-12-02 06:05:01,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-12-02 06:05:01,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-12-02 06:05:01,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-12-02 06:05:01,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-12-02 06:05:01,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-12-02 06:05:01,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-12-02 06:05:01,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-12-02 06:05:01,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-12-02 06:05:01,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-12-02 06:05:01,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-12-02 06:05:01,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-12-02 06:05:01,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-12-02 06:05:01,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-12-02 06:05:01,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-12-02 06:05:01,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-12-02 06:05:01,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2024-12-02 06:05:01,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2024-12-02 06:05:01,749 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2024-12-02 06:05:01,749 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2024-12-02 06:05:01,749 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-12-02 06:05:01,749 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-12-02 06:05:01,749 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-12-02 06:05:01,749 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-12-02 06:05:01,749 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-12-02 06:05:01,749 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-12-02 06:05:01,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 06:05:01,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 06:05:01,750 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-12-02 06:05:01,750 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-12-02 06:05:01,750 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2024-12-02 06:05:01,750 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2024-12-02 06:05:01,916 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 06:05:01,918 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 06:05:03,150 INFO L? ?]: Removed 473 outVars from TransFormulas that were not future-live. [2024-12-02 06:05:03,150 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 06:05:03,172 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 06:05:03,172 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 06:05:03,173 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:05:03 BoogieIcfgContainer [2024-12-02 06:05:03,173 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 06:05:03,175 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 06:05:03,175 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 06:05:03,180 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 06:05:03,180 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 06:05:00" (1/3) ... [2024-12-02 06:05:03,180 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ad01db0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:05:03, skipping insertion in model container [2024-12-02 06:05:03,181 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:05:01" (2/3) ... [2024-12-02 06:05:03,181 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ad01db0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:05:03, skipping insertion in model container [2024-12-02 06:05:03,181 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:05:03" (3/3) ... [2024-12-02 06:05:03,182 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product28.cil.c [2024-12-02 06:05:03,196 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 06:05:03,198 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec3_product28.cil.c that has 29 procedures, 605 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 06:05:03,256 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 06:05:03,266 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;@778730dd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 06:05:03,266 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 06:05:03,271 INFO L276 IsEmpty]: Start isEmpty. Operand has 605 states, 465 states have (on average 1.6688172043010752) internal successors, (776), 485 states have internal predecessors, (776), 110 states have call successors, (110), 28 states have call predecessors, (110), 28 states have return successors, (110), 106 states have call predecessors, (110), 110 states have call successors, (110) [2024-12-02 06:05:03,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-12-02 06:05:03,281 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:05:03,281 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 06:05:03,282 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:05:03,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:05:03,286 INFO L85 PathProgramCache]: Analyzing trace with hash 835264426, now seen corresponding path program 1 times [2024-12-02 06:05:03,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:05:03,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992744573] [2024-12-02 06:05:03,292 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:05:03,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:05:03,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:05:03,906 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 06:05:03,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:05:03,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992744573] [2024-12-02 06:05:03,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992744573] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:05:03,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:05:03,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 06:05:03,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468254091] [2024-12-02 06:05:03,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:05:03,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 06:05:03,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:05:03,933 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 06:05:03,934 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 06:05:03,937 INFO L87 Difference]: Start difference. First operand has 605 states, 465 states have (on average 1.6688172043010752) internal successors, (776), 485 states have internal predecessors, (776), 110 states have call successors, (110), 28 states have call predecessors, (110), 28 states have return successors, (110), 106 states have call predecessors, (110), 110 states have call successors, (110) 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, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-12-02 06:05:04,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:05:04,158 INFO L93 Difference]: Finished difference Result 1207 states and 2004 transitions. [2024-12-02 06:05:04,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 06:05:04,160 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, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 67 [2024-12-02 06:05:04,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:05:04,177 INFO L225 Difference]: With dead ends: 1207 [2024-12-02 06:05:04,178 INFO L226 Difference]: Without dead ends: 610 [2024-12-02 06:05:04,185 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 06:05:04,187 INFO L435 NwaCegarLoop]: 981 mSDtfsCounter, 91 mSDsluCounter, 4819 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 5800 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 06:05:04,187 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 5800 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 06:05:04,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2024-12-02 06:05:04,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 608. [2024-12-02 06:05:04,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 468 states have (on average 1.6602564102564104) internal successors, (777), 488 states have internal predecessors, (777), 111 states have call successors, (111), 28 states have call predecessors, (111), 28 states have return successors, (110), 105 states have call predecessors, (110), 108 states have call successors, (110) [2024-12-02 06:05:04,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 998 transitions. [2024-12-02 06:05:04,276 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 998 transitions. Word has length 67 [2024-12-02 06:05:04,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:05:04,277 INFO L471 AbstractCegarLoop]: Abstraction has 608 states and 998 transitions. [2024-12-02 06:05:04,277 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, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-12-02 06:05:04,277 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 998 transitions. [2024-12-02 06:05:04,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-12-02 06:05:04,281 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:05:04,281 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 06:05:04,282 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 06:05:04,282 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:05:04,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:05:04,282 INFO L85 PathProgramCache]: Analyzing trace with hash -351958820, now seen corresponding path program 1 times [2024-12-02 06:05:04,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:05:04,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577825885] [2024-12-02 06:05:04,283 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:05:04,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:05:04,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:05:04,442 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 06:05:04,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:05:04,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577825885] [2024-12-02 06:05:04,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577825885] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:05:04,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:05:04,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 06:05:04,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145657658] [2024-12-02 06:05:04,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:05:04,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 06:05:04,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:05:04,444 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 06:05:04,444 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 06:05:04,445 INFO L87 Difference]: Start difference. First operand 608 states and 998 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-12-02 06:05:04,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:05:04,520 INFO L93 Difference]: Finished difference Result 1198 states and 1977 transitions. [2024-12-02 06:05:04,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 06:05:04,520 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 68 [2024-12-02 06:05:04,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:05:04,526 INFO L225 Difference]: With dead ends: 1198 [2024-12-02 06:05:04,527 INFO L226 Difference]: Without dead ends: 584 [2024-12-02 06:05:04,531 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 06:05:04,531 INFO L435 NwaCegarLoop]: 968 mSDtfsCounter, 14 mSDsluCounter, 1931 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2899 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 06:05:04,532 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2899 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:05:04,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2024-12-02 06:05:04,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 584. [2024-12-02 06:05:04,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 584 states, 447 states have (on average 1.651006711409396) internal successors, (738), 465 states have internal predecessors, (738), 110 states have call successors, (110), 28 states have call predecessors, (110), 26 states have return successors, (107), 104 states have call predecessors, (107), 107 states have call successors, (107) [2024-12-02 06:05:04,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 955 transitions. [2024-12-02 06:05:04,564 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 955 transitions. Word has length 68 [2024-12-02 06:05:04,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:05:04,564 INFO L471 AbstractCegarLoop]: Abstraction has 584 states and 955 transitions. [2024-12-02 06:05:04,564 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-12-02 06:05:04,564 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 955 transitions. [2024-12-02 06:05:04,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-12-02 06:05:04,567 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:05:04,567 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 06:05:04,567 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 06:05:04,568 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:05:04,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:05:04,568 INFO L85 PathProgramCache]: Analyzing trace with hash -229701840, now seen corresponding path program 1 times [2024-12-02 06:05:04,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:05:04,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970191300] [2024-12-02 06:05:04,568 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:05:04,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:05:04,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:05:04,815 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 06:05:04,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:05:04,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970191300] [2024-12-02 06:05:04,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970191300] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:05:04,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:05:04,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 06:05:04,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405778473] [2024-12-02 06:05:04,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:05:04,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 06:05:04,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:05:04,816 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 06:05:04,817 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 06:05:04,817 INFO L87 Difference]: Start difference. First operand 584 states and 955 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, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-12-02 06:05:04,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:05:04,913 INFO L93 Difference]: Finished difference Result 1161 states and 1909 transitions. [2024-12-02 06:05:04,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 06:05:04,914 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, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 68 [2024-12-02 06:05:04,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:05:04,920 INFO L225 Difference]: With dead ends: 1161 [2024-12-02 06:05:04,920 INFO L226 Difference]: Without dead ends: 578 [2024-12-02 06:05:04,923 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 06:05:04,923 INFO L435 NwaCegarLoop]: 944 mSDtfsCounter, 77 mSDsluCounter, 4650 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 5594 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:05:04,924 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 5594 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:05:04,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2024-12-02 06:05:04,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 578. [2024-12-02 06:05:04,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 578 states, 441 states have (on average 1.6439909297052153) internal successors, (725), 459 states have internal predecessors, (725), 110 states have call successors, (110), 28 states have call predecessors, (110), 26 states have return successors, (107), 104 states have call predecessors, (107), 107 states have call successors, (107) [2024-12-02 06:05:04,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 942 transitions. [2024-12-02 06:05:04,951 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 942 transitions. Word has length 68 [2024-12-02 06:05:04,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:05:04,951 INFO L471 AbstractCegarLoop]: Abstraction has 578 states and 942 transitions. [2024-12-02 06:05:04,951 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, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-12-02 06:05:04,951 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 942 transitions. [2024-12-02 06:05:04,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-12-02 06:05:04,953 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:05:04,953 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 06:05:04,953 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 06:05:04,953 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:05:04,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:05:04,954 INFO L85 PathProgramCache]: Analyzing trace with hash 151788686, now seen corresponding path program 1 times [2024-12-02 06:05:04,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:05:04,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472246943] [2024-12-02 06:05:04,954 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:05:04,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:05:04,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:05:05,184 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 06:05:05,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:05:05,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472246943] [2024-12-02 06:05:05,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472246943] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:05:05,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:05:05,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 06:05:05,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122029759] [2024-12-02 06:05:05,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:05:05,184 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 06:05:05,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:05:05,185 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 06:05:05,185 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 06:05:05,185 INFO L87 Difference]: Start difference. First operand 578 states and 942 transitions. Second operand has 7 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-12-02 06:05:05,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:05:05,263 INFO L93 Difference]: Finished difference Result 1149 states and 1883 transitions. [2024-12-02 06:05:05,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 06:05:05,264 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 69 [2024-12-02 06:05:05,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:05:05,269 INFO L225 Difference]: With dead ends: 1149 [2024-12-02 06:05:05,269 INFO L226 Difference]: Without dead ends: 572 [2024-12-02 06:05:05,271 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 06:05:05,271 INFO L435 NwaCegarLoop]: 932 mSDtfsCounter, 63 mSDsluCounter, 4602 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 5534 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 06:05:05,272 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 5534 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:05:05,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2024-12-02 06:05:05,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 572. [2024-12-02 06:05:05,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 435 states have (on average 1.6367816091954024) internal successors, (712), 453 states have internal predecessors, (712), 110 states have call successors, (110), 28 states have call predecessors, (110), 26 states have return successors, (107), 104 states have call predecessors, (107), 107 states have call successors, (107) [2024-12-02 06:05:05,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 929 transitions. [2024-12-02 06:05:05,296 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 929 transitions. Word has length 69 [2024-12-02 06:05:05,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:05:05,296 INFO L471 AbstractCegarLoop]: Abstraction has 572 states and 929 transitions. [2024-12-02 06:05:05,296 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-12-02 06:05:05,296 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 929 transitions. [2024-12-02 06:05:05,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-12-02 06:05:05,297 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:05:05,297 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 06:05:05,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 06:05:05,297 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:05:05,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:05:05,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1871200492, now seen corresponding path program 1 times [2024-12-02 06:05:05,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:05:05,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949148642] [2024-12-02 06:05:05,298 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:05:05,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:05:05,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:05:05,454 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 06:05:05,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:05:05,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949148642] [2024-12-02 06:05:05,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949148642] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:05:05,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:05:05,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 06:05:05,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919139167] [2024-12-02 06:05:05,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:05:05,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 06:05:05,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:05:05,455 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 06:05:05,455 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 06:05:05,456 INFO L87 Difference]: Start difference. First operand 572 states and 929 transitions. Second operand has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-12-02 06:05:05,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:05:05,530 INFO L93 Difference]: Finished difference Result 1137 states and 1857 transitions. [2024-12-02 06:05:05,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 06:05:05,530 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 70 [2024-12-02 06:05:05,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:05:05,535 INFO L225 Difference]: With dead ends: 1137 [2024-12-02 06:05:05,535 INFO L226 Difference]: Without dead ends: 566 [2024-12-02 06:05:05,537 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 06:05:05,537 INFO L435 NwaCegarLoop]: 920 mSDtfsCounter, 49 mSDsluCounter, 4554 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 5474 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 06:05:05,538 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 5474 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:05:05,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2024-12-02 06:05:05,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 566. [2024-12-02 06:05:05,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 429 states have (on average 1.6293706293706294) internal successors, (699), 447 states have internal predecessors, (699), 110 states have call successors, (110), 28 states have call predecessors, (110), 26 states have return successors, (107), 104 states have call predecessors, (107), 107 states have call successors, (107) [2024-12-02 06:05:05,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 916 transitions. [2024-12-02 06:05:05,555 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 916 transitions. Word has length 70 [2024-12-02 06:05:05,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:05:05,556 INFO L471 AbstractCegarLoop]: Abstraction has 566 states and 916 transitions. [2024-12-02 06:05:05,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-12-02 06:05:05,556 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 916 transitions. [2024-12-02 06:05:05,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-12-02 06:05:05,557 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:05:05,557 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 06:05:05,557 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 06:05:05,557 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:05:05,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:05:05,557 INFO L85 PathProgramCache]: Analyzing trace with hash -976310699, now seen corresponding path program 1 times [2024-12-02 06:05:05,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:05:05,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175023334] [2024-12-02 06:05:05,558 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:05:05,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:05:05,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:05:05,684 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 06:05:05,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:05:05,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175023334] [2024-12-02 06:05:05,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175023334] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:05:05,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:05:05,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 06:05:05,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453026183] [2024-12-02 06:05:05,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:05:05,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 06:05:05,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:05:05,685 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 06:05:05,685 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 06:05:05,685 INFO L87 Difference]: Start difference. First operand 566 states and 916 transitions. Second operand has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-12-02 06:05:05,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:05:05,747 INFO L93 Difference]: Finished difference Result 1125 states and 1831 transitions. [2024-12-02 06:05:05,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 06:05:05,748 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 70 [2024-12-02 06:05:05,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:05:05,752 INFO L225 Difference]: With dead ends: 1125 [2024-12-02 06:05:05,752 INFO L226 Difference]: Without dead ends: 566 [2024-12-02 06:05:05,754 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 06:05:05,755 INFO L435 NwaCegarLoop]: 908 mSDtfsCounter, 24 mSDsluCounter, 4518 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 5426 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 06:05:05,755 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 5426 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:05:05,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2024-12-02 06:05:05,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 566. [2024-12-02 06:05:05,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 429 states have (on average 1.627039627039627) internal successors, (698), 447 states have internal predecessors, (698), 110 states have call successors, (110), 28 states have call predecessors, (110), 26 states have return successors, (107), 104 states have call predecessors, (107), 107 states have call successors, (107) [2024-12-02 06:05:05,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 915 transitions. [2024-12-02 06:05:05,773 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 915 transitions. Word has length 70 [2024-12-02 06:05:05,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:05:05,773 INFO L471 AbstractCegarLoop]: Abstraction has 566 states and 915 transitions. [2024-12-02 06:05:05,773 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-12-02 06:05:05,773 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 915 transitions. [2024-12-02 06:05:05,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-12-02 06:05:05,774 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:05:05,774 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 06:05:05,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 06:05:05,775 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:05:05,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:05:05,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1123649166, now seen corresponding path program 1 times [2024-12-02 06:05:05,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:05:05,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462132952] [2024-12-02 06:05:05,775 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:05:05,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:05:05,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:05:05,875 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 06:05:05,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:05:05,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462132952] [2024-12-02 06:05:05,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462132952] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:05:05,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:05:05,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 06:05:05,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267256217] [2024-12-02 06:05:05,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:05:05,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 06:05:05,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:05:05,877 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 06:05:05,877 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 06:05:05,877 INFO L87 Difference]: Start difference. First operand 566 states and 915 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, (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 06:05:05,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:05:05,924 INFO L93 Difference]: Finished difference Result 1116 states and 1816 transitions. [2024-12-02 06:05:05,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 06:05:05,925 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, (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 71 [2024-12-02 06:05:05,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:05:05,928 INFO L225 Difference]: With dead ends: 1116 [2024-12-02 06:05:05,928 INFO L226 Difference]: Without dead ends: 566 [2024-12-02 06:05:05,931 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 06:05:05,931 INFO L435 NwaCegarLoop]: 900 mSDtfsCounter, 15 mSDsluCounter, 1785 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 2685 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 06:05:05,932 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 2685 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:05:05,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2024-12-02 06:05:05,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 566. [2024-12-02 06:05:05,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 429 states have (on average 1.6247086247086246) internal successors, (697), 447 states have internal predecessors, (697), 110 states have call successors, (110), 28 states have call predecessors, (110), 26 states have return successors, (107), 104 states have call predecessors, (107), 107 states have call successors, (107) [2024-12-02 06:05:05,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 914 transitions. [2024-12-02 06:05:05,947 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 914 transitions. Word has length 71 [2024-12-02 06:05:05,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:05:05,948 INFO L471 AbstractCegarLoop]: Abstraction has 566 states and 914 transitions. [2024-12-02 06:05:05,948 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, (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 06:05:05,948 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 914 transitions. [2024-12-02 06:05:05,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-12-02 06:05:05,949 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:05:05,949 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 06:05:05,949 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 06:05:05,949 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:05:05,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:05:05,949 INFO L85 PathProgramCache]: Analyzing trace with hash -713829452, now seen corresponding path program 1 times [2024-12-02 06:05:05,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:05:05,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496573978] [2024-12-02 06:05:05,949 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:05:05,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:05:05,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:05:06,023 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 06:05:06,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:05:06,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496573978] [2024-12-02 06:05:06,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496573978] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:05:06,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:05:06,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 06:05:06,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737605402] [2024-12-02 06:05:06,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:05:06,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 06:05:06,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:05:06,024 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 06:05:06,024 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 06:05:06,024 INFO L87 Difference]: Start difference. First operand 566 states and 914 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, (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 06:05:06,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:05:06,066 INFO L93 Difference]: Finished difference Result 1116 states and 1814 transitions. [2024-12-02 06:05:06,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 06:05:06,066 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, (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 72 [2024-12-02 06:05:06,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:05:06,071 INFO L225 Difference]: With dead ends: 1116 [2024-12-02 06:05:06,071 INFO L226 Difference]: Without dead ends: 566 [2024-12-02 06:05:06,073 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 06:05:06,073 INFO L435 NwaCegarLoop]: 901 mSDtfsCounter, 14 mSDsluCounter, 1786 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2687 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 06:05:06,074 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2687 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:05:06,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2024-12-02 06:05:06,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 566. [2024-12-02 06:05:06,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 429 states have (on average 1.6223776223776223) internal successors, (696), 447 states have internal predecessors, (696), 110 states have call successors, (110), 28 states have call predecessors, (110), 26 states have return successors, (107), 104 states have call predecessors, (107), 107 states have call successors, (107) [2024-12-02 06:05:06,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 913 transitions. [2024-12-02 06:05:06,090 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 913 transitions. Word has length 72 [2024-12-02 06:05:06,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:05:06,090 INFO L471 AbstractCegarLoop]: Abstraction has 566 states and 913 transitions. [2024-12-02 06:05:06,090 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, (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 06:05:06,090 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 913 transitions. [2024-12-02 06:05:06,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-12-02 06:05:06,091 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:05:06,091 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] [2024-12-02 06:05:06,091 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 06:05:06,091 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:05:06,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:05:06,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1212770825, now seen corresponding path program 1 times [2024-12-02 06:05:06,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:05:06,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47417681] [2024-12-02 06:05:06,092 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:05:06,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:05:06,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:05:06,168 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 06:05:06,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:05:06,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47417681] [2024-12-02 06:05:06,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47417681] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:05:06,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:05:06,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 06:05:06,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019718702] [2024-12-02 06:05:06,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:05:06,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 06:05:06,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:05:06,170 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 06:05:06,170 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 06:05:06,170 INFO L87 Difference]: Start difference. First operand 566 states and 913 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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 06:05:06,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:05:06,220 INFO L93 Difference]: Finished difference Result 1116 states and 1812 transitions. [2024-12-02 06:05:06,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 06:05:06,221 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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 73 [2024-12-02 06:05:06,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:05:06,225 INFO L225 Difference]: With dead ends: 1116 [2024-12-02 06:05:06,225 INFO L226 Difference]: Without dead ends: 566 [2024-12-02 06:05:06,227 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 06:05:06,227 INFO L435 NwaCegarLoop]: 902 mSDtfsCounter, 13 mSDsluCounter, 1787 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2689 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 06:05:06,228 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2689 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:05:06,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2024-12-02 06:05:06,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 566. [2024-12-02 06:05:06,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 429 states have (on average 1.6200466200466201) internal successors, (695), 447 states have internal predecessors, (695), 110 states have call successors, (110), 28 states have call predecessors, (110), 26 states have return successors, (107), 104 states have call predecessors, (107), 107 states have call successors, (107) [2024-12-02 06:05:06,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 912 transitions. [2024-12-02 06:05:06,245 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 912 transitions. Word has length 73 [2024-12-02 06:05:06,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:05:06,245 INFO L471 AbstractCegarLoop]: Abstraction has 566 states and 912 transitions. [2024-12-02 06:05:06,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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 06:05:06,245 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 912 transitions. [2024-12-02 06:05:06,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-12-02 06:05:06,246 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:05:06,246 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 06:05:06,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 06:05:06,246 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:05:06,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:05:06,247 INFO L85 PathProgramCache]: Analyzing trace with hash 181465177, now seen corresponding path program 1 times [2024-12-02 06:05:06,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:05:06,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052477208] [2024-12-02 06:05:06,247 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:05:06,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:05:06,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:05:06,326 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 06:05:06,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:05:06,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052477208] [2024-12-02 06:05:06,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052477208] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:05:06,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:05:06,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 06:05:06,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056966904] [2024-12-02 06:05:06,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:05:06,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 06:05:06,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:05:06,328 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 06:05:06,328 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 06:05:06,328 INFO L87 Difference]: Start difference. First operand 566 states and 912 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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 06:05:06,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:05:06,372 INFO L93 Difference]: Finished difference Result 1116 states and 1810 transitions. [2024-12-02 06:05:06,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 06:05:06,372 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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 74 [2024-12-02 06:05:06,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:05:06,376 INFO L225 Difference]: With dead ends: 1116 [2024-12-02 06:05:06,376 INFO L226 Difference]: Without dead ends: 566 [2024-12-02 06:05:06,378 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 06:05:06,379 INFO L435 NwaCegarLoop]: 903 mSDtfsCounter, 12 mSDsluCounter, 1788 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2691 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 06:05:06,379 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2691 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:05:06,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2024-12-02 06:05:06,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 566. [2024-12-02 06:05:06,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 429 states have (on average 1.6177156177156178) internal successors, (694), 447 states have internal predecessors, (694), 110 states have call successors, (110), 28 states have call predecessors, (110), 26 states have return successors, (107), 104 states have call predecessors, (107), 107 states have call successors, (107) [2024-12-02 06:05:06,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 911 transitions. [2024-12-02 06:05:06,396 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 911 transitions. Word has length 74 [2024-12-02 06:05:06,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:05:06,396 INFO L471 AbstractCegarLoop]: Abstraction has 566 states and 911 transitions. [2024-12-02 06:05:06,397 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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 06:05:06,397 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 911 transitions. [2024-12-02 06:05:06,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-12-02 06:05:06,398 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:05:06,398 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 06:05:06,398 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 06:05:06,398 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:05:06,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:05:06,398 INFO L85 PathProgramCache]: Analyzing trace with hash 134657660, now seen corresponding path program 1 times [2024-12-02 06:05:06,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:05:06,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979147635] [2024-12-02 06:05:06,399 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:05:06,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:05:06,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:05:06,631 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 06:05:06,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:05:06,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979147635] [2024-12-02 06:05:06,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979147635] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:05:06,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:05:06,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 06:05:06,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662371534] [2024-12-02 06:05:06,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:05:06,632 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 06:05:06,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:05:06,632 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 06:05:06,632 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 06:05:06,632 INFO L87 Difference]: Start difference. First operand 566 states and 911 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 5 states have internal predecessors, (55), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-12-02 06:05:07,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:05:07,357 INFO L93 Difference]: Finished difference Result 1607 states and 2616 transitions. [2024-12-02 06:05:07,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 06:05:07,357 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 5 states have internal predecessors, (55), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 75 [2024-12-02 06:05:07,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:05:07,367 INFO L225 Difference]: With dead ends: 1607 [2024-12-02 06:05:07,367 INFO L226 Difference]: Without dead ends: 1059 [2024-12-02 06:05:07,371 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 06:05:07,372 INFO L435 NwaCegarLoop]: 918 mSDtfsCounter, 774 mSDsluCounter, 3363 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 777 SdHoareTripleChecker+Valid, 4281 SdHoareTripleChecker+Invalid, 569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 06:05:07,372 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [777 Valid, 4281 Invalid, 569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 06:05:07,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1059 states. [2024-12-02 06:05:07,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1059 to 1051. [2024-12-02 06:05:07,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1051 states, 799 states have (on average 1.5832290362953692) internal successors, (1265), 833 states have internal predecessors, (1265), 202 states have call successors, (202), 53 states have call predecessors, (202), 49 states have return successors, (205), 191 states have call predecessors, (205), 198 states have call successors, (205) [2024-12-02 06:05:07,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 1672 transitions. [2024-12-02 06:05:07,429 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 1672 transitions. Word has length 75 [2024-12-02 06:05:07,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:05:07,430 INFO L471 AbstractCegarLoop]: Abstraction has 1051 states and 1672 transitions. [2024-12-02 06:05:07,430 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 5 states have internal predecessors, (55), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-12-02 06:05:07,430 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 1672 transitions. [2024-12-02 06:05:07,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-12-02 06:05:07,431 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:05:07,431 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 06:05:07,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 06:05:07,431 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:05:07,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:05:07,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1527552892, now seen corresponding path program 1 times [2024-12-02 06:05:07,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:05:07,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44950213] [2024-12-02 06:05:07,432 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:05:07,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:05:07,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:05:07,617 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 06:05:07,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:05:07,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44950213] [2024-12-02 06:05:07,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44950213] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:05:07,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392812432] [2024-12-02 06:05:07,617 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:05:07,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:05:07,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90657ff5-8646-442d-9b44-6800f6183d13/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:05:07,619 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90657ff5-8646-442d-9b44-6800f6183d13/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:05:07,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90657ff5-8646-442d-9b44-6800f6183d13/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 06:05:07,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:05:07,988 INFO L256 TraceCheckSpWp]: Trace formula consists of 1495 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 06:05:07,996 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:05:08,061 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 06:05:08,061 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 06:05:08,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1392812432] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:05:08,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 06:05:08,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-12-02 06:05:08,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009116193] [2024-12-02 06:05:08,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:05:08,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:05:08,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:05:08,062 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:05:08,062 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 06:05:08,062 INFO L87 Difference]: Start difference. First operand 1051 states and 1672 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-12-02 06:05:08,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:05:08,206 INFO L93 Difference]: Finished difference Result 3031 states and 4888 transitions. [2024-12-02 06:05:08,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:05:08,206 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 75 [2024-12-02 06:05:08,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:05:08,227 INFO L225 Difference]: With dead ends: 3031 [2024-12-02 06:05:08,228 INFO L226 Difference]: Without dead ends: 1998 [2024-12-02 06:05:08,236 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 06:05:08,237 INFO L435 NwaCegarLoop]: 1602 mSDtfsCounter, 874 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 874 SdHoareTripleChecker+Valid, 2406 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 06:05:08,237 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [874 Valid, 2406 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:05:08,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1998 states. [2024-12-02 06:05:08,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1998 to 1937. [2024-12-02 06:05:08,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1937 states, 1480 states have (on average 1.6006756756756757) internal successors, (2369), 1548 states have internal predecessors, (2369), 363 states have call successors, (363), 96 states have call predecessors, (363), 93 states have return successors, (382), 346 states have call predecessors, (382), 359 states have call successors, (382) [2024-12-02 06:05:08,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1937 states to 1937 states and 3114 transitions. [2024-12-02 06:05:08,378 INFO L78 Accepts]: Start accepts. Automaton has 1937 states and 3114 transitions. Word has length 75 [2024-12-02 06:05:08,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:05:08,378 INFO L471 AbstractCegarLoop]: Abstraction has 1937 states and 3114 transitions. [2024-12-02 06:05:08,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-12-02 06:05:08,379 INFO L276 IsEmpty]: Start isEmpty. Operand 1937 states and 3114 transitions. [2024-12-02 06:05:08,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-12-02 06:05:08,380 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:05:08,380 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:05:08,392 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90657ff5-8646-442d-9b44-6800f6183d13/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-12-02 06:05:08,580 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90657ff5-8646-442d-9b44-6800f6183d13/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-12-02 06:05:08,581 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:05:08,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:05:08,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1092140101, now seen corresponding path program 1 times [2024-12-02 06:05:08,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:05:08,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829702053] [2024-12-02 06:05:08,581 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:05:08,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:05:08,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:05:08,771 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 06:05:08,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:05:08,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829702053] [2024-12-02 06:05:08,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829702053] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:05:08,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268446718] [2024-12-02 06:05:08,771 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:05:08,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:05:08,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90657ff5-8646-442d-9b44-6800f6183d13/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:05:08,773 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90657ff5-8646-442d-9b44-6800f6183d13/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:05:08,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90657ff5-8646-442d-9b44-6800f6183d13/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 06:05:09,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:05:09,090 INFO L256 TraceCheckSpWp]: Trace formula consists of 1496 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 06:05:09,095 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:05:09,144 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 06:05:09,144 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 06:05:09,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [268446718] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:05:09,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 06:05:09,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-12-02 06:05:09,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094494006] [2024-12-02 06:05:09,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:05:09,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:05:09,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:05:09,145 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:05:09,146 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 06:05:09,146 INFO L87 Difference]: Start difference. First operand 1937 states and 3114 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-12-02 06:05:09,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:05:09,283 INFO L93 Difference]: Finished difference Result 4347 states and 7025 transitions. [2024-12-02 06:05:09,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:05:09,284 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 76 [2024-12-02 06:05:09,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:05:09,304 INFO L225 Difference]: With dead ends: 4347 [2024-12-02 06:05:09,304 INFO L226 Difference]: Without dead ends: 2428 [2024-12-02 06:05:09,316 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 06:05:09,317 INFO L435 NwaCegarLoop]: 909 mSDtfsCounter, 872 mSDsluCounter, 802 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 872 SdHoareTripleChecker+Valid, 1711 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 06:05:09,317 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [872 Valid, 1711 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:05:09,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2428 states. [2024-12-02 06:05:09,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2428 to 2381. [2024-12-02 06:05:09,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2381 states, 1822 states have (on average 1.6125137211855105) internal successors, (2938), 1907 states have internal predecessors, (2938), 444 states have call successors, (444), 116 states have call predecessors, (444), 114 states have return successors, (467), 425 states have call predecessors, (467), 440 states have call successors, (467) [2024-12-02 06:05:09,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2381 states to 2381 states and 3849 transitions. [2024-12-02 06:05:09,474 INFO L78 Accepts]: Start accepts. Automaton has 2381 states and 3849 transitions. Word has length 76 [2024-12-02 06:05:09,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:05:09,474 INFO L471 AbstractCegarLoop]: Abstraction has 2381 states and 3849 transitions. [2024-12-02 06:05:09,474 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-12-02 06:05:09,475 INFO L276 IsEmpty]: Start isEmpty. Operand 2381 states and 3849 transitions. [2024-12-02 06:05:09,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-12-02 06:05:09,476 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:05:09,476 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:05:09,486 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90657ff5-8646-442d-9b44-6800f6183d13/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 06:05:09,676 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90657ff5-8646-442d-9b44-6800f6183d13/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:05:09,676 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:05:09,677 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:05:09,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1658445235, now seen corresponding path program 1 times [2024-12-02 06:05:09,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:05:09,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43665522] [2024-12-02 06:05:09,677 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:05:09,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:05:09,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:05:09,858 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 06:05:09,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:05:09,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43665522] [2024-12-02 06:05:09,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43665522] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:05:09,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:05:09,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 06:05:09,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752596682] [2024-12-02 06:05:09,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:05:09,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 06:05:09,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:05:09,860 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 06:05:09,860 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 06:05:09,860 INFO L87 Difference]: Start difference. First operand 2381 states and 3849 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 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 06:05:10,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:05:10,525 INFO L93 Difference]: Finished difference Result 7059 states and 11641 transitions. [2024-12-02 06:05:10,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 06:05:10,526 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 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 78 [2024-12-02 06:05:10,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:05:10,570 INFO L225 Difference]: With dead ends: 7059 [2024-12-02 06:05:10,570 INFO L226 Difference]: Without dead ends: 4696 [2024-12-02 06:05:10,583 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 06:05:10,584 INFO L435 NwaCegarLoop]: 1014 mSDtfsCounter, 907 mSDsluCounter, 3655 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 918 SdHoareTripleChecker+Valid, 4669 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 06:05:10,584 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [918 Valid, 4669 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 06:05:10,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4696 states. [2024-12-02 06:05:10,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4696 to 4643. [2024-12-02 06:05:10,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4643 states, 3559 states have (on average 1.6119696543973026) internal successors, (5737), 3724 states have internal predecessors, (5737), 858 states have call successors, (858), 226 states have call predecessors, (858), 225 states have return successors, (1058), 828 states have call predecessors, (1058), 852 states have call successors, (1058) [2024-12-02 06:05:10,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4643 states to 4643 states and 7653 transitions. [2024-12-02 06:05:10,887 INFO L78 Accepts]: Start accepts. Automaton has 4643 states and 7653 transitions. Word has length 78 [2024-12-02 06:05:10,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:05:10,887 INFO L471 AbstractCegarLoop]: Abstraction has 4643 states and 7653 transitions. [2024-12-02 06:05:10,887 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 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 06:05:10,887 INFO L276 IsEmpty]: Start isEmpty. Operand 4643 states and 7653 transitions. [2024-12-02 06:05:10,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-12-02 06:05:10,888 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:05:10,889 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:05:10,889 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 06:05:10,889 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:05:10,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:05:10,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1235674296, now seen corresponding path program 1 times [2024-12-02 06:05:10,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:05:10,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189137509] [2024-12-02 06:05:10,889 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:05:10,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:05:10,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:05:10,986 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 06:05:10,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:05:10,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189137509] [2024-12-02 06:05:10,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189137509] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:05:10,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:05:10,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 06:05:10,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065350121] [2024-12-02 06:05:10,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:05:10,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 06:05:10,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:05:10,988 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 06:05:10,988 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 06:05:10,988 INFO L87 Difference]: Start difference. First operand 4643 states and 7653 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 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 06:05:11,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:05:11,233 INFO L93 Difference]: Finished difference Result 9292 states and 15439 transitions. [2024-12-02 06:05:11,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 06:05:11,234 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 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 79 [2024-12-02 06:05:11,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:05:11,273 INFO L225 Difference]: With dead ends: 9292 [2024-12-02 06:05:11,273 INFO L226 Difference]: Without dead ends: 4667 [2024-12-02 06:05:11,298 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 06:05:11,299 INFO L435 NwaCegarLoop]: 894 mSDtfsCounter, 12 mSDsluCounter, 1763 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2657 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 06:05:11,299 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2657 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 06:05:11,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4667 states. [2024-12-02 06:05:11,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4667 to 4651. [2024-12-02 06:05:11,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4651 states, 3565 states have (on average 1.6103786816269285) internal successors, (5741), 3730 states have internal predecessors, (5741), 858 states have call successors, (858), 230 states have call predecessors, (858), 227 states have return successors, (1046), 826 states have call predecessors, (1046), 852 states have call successors, (1046) [2024-12-02 06:05:11,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4651 states to 4651 states and 7645 transitions. [2024-12-02 06:05:11,533 INFO L78 Accepts]: Start accepts. Automaton has 4651 states and 7645 transitions. Word has length 79 [2024-12-02 06:05:11,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:05:11,533 INFO L471 AbstractCegarLoop]: Abstraction has 4651 states and 7645 transitions. [2024-12-02 06:05:11,534 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 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 06:05:11,535 INFO L276 IsEmpty]: Start isEmpty. Operand 4651 states and 7645 transitions. [2024-12-02 06:05:11,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-12-02 06:05:11,536 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:05:11,536 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:05:11,536 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-02 06:05:11,536 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:05:11,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:05:11,537 INFO L85 PathProgramCache]: Analyzing trace with hash 628789887, now seen corresponding path program 1 times [2024-12-02 06:05:11,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:05:11,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165641673] [2024-12-02 06:05:11,537 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:05:11,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:05:11,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:05:11,679 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 06:05:11,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:05:11,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165641673] [2024-12-02 06:05:11,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165641673] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:05:11,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:05:11,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 06:05:11,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43069867] [2024-12-02 06:05:11,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:05:11,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 06:05:11,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:05:11,680 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 06:05:11,681 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 06:05:11,681 INFO L87 Difference]: Start difference. First operand 4651 states and 7645 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 5 states have internal predecessors, (62), 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 06:05:12,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:05:12,365 INFO L93 Difference]: Finished difference Result 13913 states and 23485 transitions. [2024-12-02 06:05:12,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 06:05:12,366 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 5 states have internal predecessors, (62), 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 87 [2024-12-02 06:05:12,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:05:12,431 INFO L225 Difference]: With dead ends: 13913 [2024-12-02 06:05:12,432 INFO L226 Difference]: Without dead ends: 9280 [2024-12-02 06:05:12,451 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 06:05:12,452 INFO L435 NwaCegarLoop]: 980 mSDtfsCounter, 901 mSDsluCounter, 3562 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 909 SdHoareTripleChecker+Valid, 4542 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 06:05:12,452 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [909 Valid, 4542 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 06:05:12,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9280 states. [2024-12-02 06:05:12,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9280 to 9211. [2024-12-02 06:05:12,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9211 states, 7066 states have (on average 1.6085479762241721) internal successors, (11366), 7391 states have internal predecessors, (11366), 1691 states have call successors, (1691), 454 states have call predecessors, (1691), 453 states have return successors, (2467), 1637 states have call predecessors, (2467), 1681 states have call successors, (2467) [2024-12-02 06:05:12,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9211 states to 9211 states and 15524 transitions. [2024-12-02 06:05:13,003 INFO L78 Accepts]: Start accepts. Automaton has 9211 states and 15524 transitions. Word has length 87 [2024-12-02 06:05:13,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:05:13,004 INFO L471 AbstractCegarLoop]: Abstraction has 9211 states and 15524 transitions. [2024-12-02 06:05:13,004 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 5 states have internal predecessors, (62), 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 06:05:13,004 INFO L276 IsEmpty]: Start isEmpty. Operand 9211 states and 15524 transitions. [2024-12-02 06:05:13,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-12-02 06:05:13,005 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:05:13,005 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:05:13,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-12-02 06:05:13,005 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:05:13,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:05:13,006 INFO L85 PathProgramCache]: Analyzing trace with hash 136436638, now seen corresponding path program 1 times [2024-12-02 06:05:13,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:05:13,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330573563] [2024-12-02 06:05:13,006 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:05:13,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:05:13,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:05:13,099 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 06:05:13,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:05:13,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330573563] [2024-12-02 06:05:13,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330573563] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:05:13,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:05:13,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 06:05:13,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677924330] [2024-12-02 06:05:13,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:05:13,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 06:05:13,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:05:13,100 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 06:05:13,100 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 06:05:13,100 INFO L87 Difference]: Start difference. First operand 9211 states and 15524 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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 06:05:13,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:05:13,538 INFO L93 Difference]: Finished difference Result 18476 states and 31513 transitions. [2024-12-02 06:05:13,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 06:05:13,539 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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 88 [2024-12-02 06:05:13,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:05:13,618 INFO L225 Difference]: With dead ends: 18476 [2024-12-02 06:05:13,618 INFO L226 Difference]: Without dead ends: 9283 [2024-12-02 06:05:13,664 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 06:05:13,665 INFO L435 NwaCegarLoop]: 891 mSDtfsCounter, 12 mSDsluCounter, 1760 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2651 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:05:13,665 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2651 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:05:13,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9283 states. [2024-12-02 06:05:14,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9283 to 9251. [2024-12-02 06:05:14,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9251 states, 7102 states have (on average 1.6060264714165025) internal successors, (11406), 7419 states have internal predecessors, (11406), 1691 states have call successors, (1691), 470 states have call predecessors, (1691), 457 states have return successors, (2449), 1633 states have call predecessors, (2449), 1681 states have call successors, (2449) [2024-12-02 06:05:14,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9251 states to 9251 states and 15546 transitions. [2024-12-02 06:05:14,084 INFO L78 Accepts]: Start accepts. Automaton has 9251 states and 15546 transitions. Word has length 88 [2024-12-02 06:05:14,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:05:14,084 INFO L471 AbstractCegarLoop]: Abstraction has 9251 states and 15546 transitions. [2024-12-02 06:05:14,084 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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 06:05:14,084 INFO L276 IsEmpty]: Start isEmpty. Operand 9251 states and 15546 transitions. [2024-12-02 06:05:14,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-12-02 06:05:14,086 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:05:14,086 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:05:14,086 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-12-02 06:05:14,086 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:05:14,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:05:14,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1743002170, now seen corresponding path program 1 times [2024-12-02 06:05:14,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:05:14,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303408994] [2024-12-02 06:05:14,087 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:05:14,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:05:14,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:05:14,245 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 06:05:14,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:05:14,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303408994] [2024-12-02 06:05:14,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303408994] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:05:14,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:05:14,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 06:05:14,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134965113] [2024-12-02 06:05:14,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:05:14,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 06:05:14,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:05:14,246 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 06:05:14,246 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 06:05:14,246 INFO L87 Difference]: Start difference. First operand 9251 states and 15546 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 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 06:05:15,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:05:15,279 INFO L93 Difference]: Finished difference Result 27781 states and 48585 transitions. [2024-12-02 06:05:15,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 06:05:15,280 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 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 97 [2024-12-02 06:05:15,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:05:15,394 INFO L225 Difference]: With dead ends: 27781 [2024-12-02 06:05:15,394 INFO L226 Difference]: Without dead ends: 18548 [2024-12-02 06:05:15,439 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 06:05:15,440 INFO L435 NwaCegarLoop]: 1017 mSDtfsCounter, 895 mSDsluCounter, 3681 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 901 SdHoareTripleChecker+Valid, 4698 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 06:05:15,440 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [901 Valid, 4698 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 06:05:15,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18548 states. [2024-12-02 06:05:16,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18548 to 18447. [2024-12-02 06:05:16,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18447 states, 14167 states have (on average 1.6035152114067903) internal successors, (22717), 14796 states have internal predecessors, (22717), 3362 states have call successors, (3362), 934 states have call predecessors, (3362), 917 states have return successors, (6132), 3260 states have call predecessors, (6132), 3344 states have call successors, (6132) [2024-12-02 06:05:16,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18447 states to 18447 states and 32211 transitions. [2024-12-02 06:05:16,320 INFO L78 Accepts]: Start accepts. Automaton has 18447 states and 32211 transitions. Word has length 97 [2024-12-02 06:05:16,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:05:16,321 INFO L471 AbstractCegarLoop]: Abstraction has 18447 states and 32211 transitions. [2024-12-02 06:05:16,321 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 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 06:05:16,321 INFO L276 IsEmpty]: Start isEmpty. Operand 18447 states and 32211 transitions. [2024-12-02 06:05:16,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-12-02 06:05:16,322 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:05:16,322 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:05:16,322 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-12-02 06:05:16,322 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:05:16,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:05:16,323 INFO L85 PathProgramCache]: Analyzing trace with hash -1187374209, now seen corresponding path program 1 times [2024-12-02 06:05:16,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:05:16,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979686272] [2024-12-02 06:05:16,323 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:05:16,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:05:16,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:05:16,392 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 06:05:16,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:05:16,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979686272] [2024-12-02 06:05:16,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979686272] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:05:16,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:05:16,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 06:05:16,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033835745] [2024-12-02 06:05:16,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:05:16,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 06:05:16,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:05:16,393 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 06:05:16,393 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 06:05:16,394 INFO L87 Difference]: Start difference. First operand 18447 states and 32211 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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 06:05:17,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:05:17,021 INFO L93 Difference]: Finished difference Result 37020 states and 65963 transitions. [2024-12-02 06:05:17,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 06:05:17,021 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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 98 [2024-12-02 06:05:17,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:05:17,126 INFO L225 Difference]: With dead ends: 37020 [2024-12-02 06:05:17,126 INFO L226 Difference]: Without dead ends: 18591 [2024-12-02 06:05:17,202 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 06:05:17,202 INFO L435 NwaCegarLoop]: 891 mSDtfsCounter, 11 mSDsluCounter, 1760 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2651 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 06:05:17,202 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2651 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 06:05:17,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18591 states. [2024-12-02 06:05:17,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18591 to 18527. [2024-12-02 06:05:17,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18527 states, 14239 states have (on average 1.6010253529039962) internal successors, (22797), 14868 states have internal predecessors, (22797), 3362 states have call successors, (3362), 950 states have call predecessors, (3362), 925 states have return successors, (6108), 3252 states have call predecessors, (6108), 3344 states have call successors, (6108) [2024-12-02 06:05:17,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18527 states to 18527 states and 32267 transitions. [2024-12-02 06:05:18,000 INFO L78 Accepts]: Start accepts. Automaton has 18527 states and 32267 transitions. Word has length 98 [2024-12-02 06:05:18,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:05:18,001 INFO L471 AbstractCegarLoop]: Abstraction has 18527 states and 32267 transitions. [2024-12-02 06:05:18,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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 06:05:18,001 INFO L276 IsEmpty]: Start isEmpty. Operand 18527 states and 32267 transitions. [2024-12-02 06:05:18,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-12-02 06:05:18,002 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:05:18,002 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:05:18,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-12-02 06:05:18,003 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:05:18,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:05:18,003 INFO L85 PathProgramCache]: Analyzing trace with hash -690960538, now seen corresponding path program 1 times [2024-12-02 06:05:18,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:05:18,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797971871] [2024-12-02 06:05:18,003 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:05:18,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:05:18,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:05:18,189 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 06:05:18,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:05:18,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797971871] [2024-12-02 06:05:18,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797971871] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:05:18,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:05:18,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 06:05:18,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977987788] [2024-12-02 06:05:18,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:05:18,190 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 06:05:18,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:05:18,191 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 06:05:18,191 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 06:05:18,191 INFO L87 Difference]: Start difference. First operand 18527 states and 32267 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2024-12-02 06:05:20,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:05:20,033 INFO L93 Difference]: Finished difference Result 55725 states and 103445 transitions. [2024-12-02 06:05:20,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 06:05:20,034 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) Word has length 108 [2024-12-02 06:05:20,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:05:20,367 INFO L225 Difference]: With dead ends: 55725 [2024-12-02 06:05:20,367 INFO L226 Difference]: Without dead ends: 37216 [2024-12-02 06:05:20,525 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 06:05:20,526 INFO L435 NwaCegarLoop]: 970 mSDtfsCounter, 893 mSDsluCounter, 3550 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 897 SdHoareTripleChecker+Valid, 4520 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 06:05:20,526 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [897 Valid, 4520 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 06:05:20,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37216 states. [2024-12-02 06:05:21,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37216 to 37051. [2024-12-02 06:05:21,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37051 states, 28480 states have (on average 1.5981741573033708) internal successors, (45516), 29733 states have internal predecessors, (45516), 6709 states have call successors, (6709), 1894 states have call predecessors, (6709), 1861 states have return successors, (16579), 6511 states have call predecessors, (16579), 6675 states have call successors, (16579) [2024-12-02 06:05:21,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37051 states to 37051 states and 68804 transitions. [2024-12-02 06:05:21,978 INFO L78 Accepts]: Start accepts. Automaton has 37051 states and 68804 transitions. Word has length 108 [2024-12-02 06:05:21,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:05:21,978 INFO L471 AbstractCegarLoop]: Abstraction has 37051 states and 68804 transitions. [2024-12-02 06:05:21,978 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2024-12-02 06:05:21,978 INFO L276 IsEmpty]: Start isEmpty. Operand 37051 states and 68804 transitions. [2024-12-02 06:05:21,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-12-02 06:05:21,980 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:05:21,980 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:05:21,980 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-12-02 06:05:21,980 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:05:21,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:05:21,980 INFO L85 PathProgramCache]: Analyzing trace with hash 548444199, now seen corresponding path program 1 times [2024-12-02 06:05:21,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:05:21,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035787720] [2024-12-02 06:05:21,980 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:05:21,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:05:21,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:05:22,049 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 06:05:22,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:05:22,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035787720] [2024-12-02 06:05:22,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035787720] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:05:22,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:05:22,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 06:05:22,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489074685] [2024-12-02 06:05:22,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:05:22,050 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 06:05:22,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:05:22,050 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 06:05:22,050 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 06:05:22,050 INFO L87 Difference]: Start difference. First operand 37051 states and 68804 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-12-02 06:05:23,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:05:23,245 INFO L93 Difference]: Finished difference Result 74327 states and 142867 transitions. [2024-12-02 06:05:23,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 06:05:23,246 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 109 [2024-12-02 06:05:23,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:05:23,472 INFO L225 Difference]: With dead ends: 74327 [2024-12-02 06:05:23,472 INFO L226 Difference]: Without dead ends: 37246 [2024-12-02 06:05:23,848 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 06:05:23,849 INFO L435 NwaCegarLoop]: 891 mSDtfsCounter, 10 mSDsluCounter, 1760 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2651 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:05:23,849 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2651 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:05:23,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37246 states. [2024-12-02 06:05:24,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37246 to 37120. [2024-12-02 06:05:25,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37120 states, 28546 states have (on average 1.5951446787641002) internal successors, (45535), 29810 states have internal predecessors, (45535), 6698 states have call successors, (6698), 1907 states have call predecessors, (6698), 1875 states have return successors, (16427), 6488 states have call predecessors, (16427), 6664 states have call successors, (16427) [2024-12-02 06:05:25,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37120 states to 37120 states and 68660 transitions. [2024-12-02 06:05:25,351 INFO L78 Accepts]: Start accepts. Automaton has 37120 states and 68660 transitions. Word has length 109 [2024-12-02 06:05:25,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:05:25,352 INFO L471 AbstractCegarLoop]: Abstraction has 37120 states and 68660 transitions. [2024-12-02 06:05:25,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-12-02 06:05:25,352 INFO L276 IsEmpty]: Start isEmpty. Operand 37120 states and 68660 transitions. [2024-12-02 06:05:25,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2024-12-02 06:05:25,361 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:05:25,361 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:05:25,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-12-02 06:05:25,361 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:05:25,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:05:25,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1802132907, now seen corresponding path program 1 times [2024-12-02 06:05:25,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:05:25,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485095045] [2024-12-02 06:05:25,362 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:05:25,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:05:25,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:05:25,762 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 27 proven. 26 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-12-02 06:05:25,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:05:25,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485095045] [2024-12-02 06:05:25,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485095045] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:05:25,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1833279364] [2024-12-02 06:05:25,764 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:05:25,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:05:25,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90657ff5-8646-442d-9b44-6800f6183d13/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:05:25,770 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90657ff5-8646-442d-9b44-6800f6183d13/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:05:25,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90657ff5-8646-442d-9b44-6800f6183d13/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 06:05:26,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:05:26,239 INFO L256 TraceCheckSpWp]: Trace formula consists of 2411 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 06:05:26,248 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:05:26,275 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-12-02 06:05:26,275 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 06:05:26,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1833279364] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:05:26,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 06:05:26,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-12-02 06:05:26,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742165670] [2024-12-02 06:05:26,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:05:26,276 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:05:26,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:05:26,276 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:05:26,276 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-12-02 06:05:26,277 INFO L87 Difference]: Start difference. First operand 37120 states and 68660 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-12-02 06:05:28,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:05:28,456 INFO L93 Difference]: Finished difference Result 82806 states and 160114 transitions. [2024-12-02 06:05:28,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:05:28,456 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 189 [2024-12-02 06:05:28,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:05:28,992 INFO L225 Difference]: With dead ends: 82806 [2024-12-02 06:05:28,992 INFO L226 Difference]: Without dead ends: 59891 [2024-12-02 06:05:29,105 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-12-02 06:05:29,106 INFO L435 NwaCegarLoop]: 907 mSDtfsCounter, 899 mSDsluCounter, 887 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 899 SdHoareTripleChecker+Valid, 1794 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:05:29,106 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [899 Valid, 1794 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:05:29,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59891 states. [2024-12-02 06:05:30,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59891 to 59647. [2024-12-02 06:05:30,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59647 states, 45987 states have (on average 1.608302346315263) internal successors, (73961), 47957 states have internal predecessors, (73961), 10632 states have call successors, (10632), 3011 states have call predecessors, (10632), 3027 states have return successors, (29031), 10436 states have call predecessors, (29031), 10582 states have call successors, (29031) [2024-12-02 06:05:31,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59647 states to 59647 states and 113624 transitions. [2024-12-02 06:05:31,311 INFO L78 Accepts]: Start accepts. Automaton has 59647 states and 113624 transitions. Word has length 189 [2024-12-02 06:05:31,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:05:31,311 INFO L471 AbstractCegarLoop]: Abstraction has 59647 states and 113624 transitions. [2024-12-02 06:05:31,311 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-12-02 06:05:31,311 INFO L276 IsEmpty]: Start isEmpty. Operand 59647 states and 113624 transitions. [2024-12-02 06:05:31,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2024-12-02 06:05:31,316 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:05:31,316 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:05:31,328 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90657ff5-8646-442d-9b44-6800f6183d13/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 06:05:31,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90657ff5-8646-442d-9b44-6800f6183d13/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:05:31,517 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:05:31,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:05:31,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1208799109, now seen corresponding path program 1 times [2024-12-02 06:05:31,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:05:31,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970409251] [2024-12-02 06:05:31,517 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:05:31,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:05:31,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:05:31,691 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 28 proven. 27 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-12-02 06:05:31,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:05:31,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970409251] [2024-12-02 06:05:31,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970409251] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:05:31,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941436517] [2024-12-02 06:05:31,691 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:05:31,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:05:31,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90657ff5-8646-442d-9b44-6800f6183d13/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:05:31,693 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90657ff5-8646-442d-9b44-6800f6183d13/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:05:31,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90657ff5-8646-442d-9b44-6800f6183d13/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 06:05:32,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:05:32,089 INFO L256 TraceCheckSpWp]: Trace formula consists of 2410 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-12-02 06:05:32,096 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:05:32,318 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-12-02 06:05:32,318 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 06:05:32,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1941436517] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:05:32,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 06:05:32,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2024-12-02 06:05:32,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831436782] [2024-12-02 06:05:32,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:05:32,319 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 06:05:32,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:05:32,319 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 06:05:32,319 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-12-02 06:05:32,319 INFO L87 Difference]: Start difference. First operand 59647 states and 113624 transitions. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 4 states have call successors, (23), 4 states have call predecessors, (23), 5 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2024-12-02 06:05:41,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:05:41,041 INFO L93 Difference]: Finished difference Result 168665 states and 337005 transitions. [2024-12-02 06:05:41,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-12-02 06:05:41,041 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 4 states have call successors, (23), 4 states have call predecessors, (23), 5 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) Word has length 190 [2024-12-02 06:05:41,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:05:41,847 INFO L225 Difference]: With dead ends: 168665 [2024-12-02 06:05:41,847 INFO L226 Difference]: Without dead ends: 109036 [2024-12-02 06:05:42,184 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2024-12-02 06:05:42,184 INFO L435 NwaCegarLoop]: 646 mSDtfsCounter, 3059 mSDsluCounter, 1849 mSDsCounter, 0 mSdLazyCounter, 6781 mSolverCounterSat, 676 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3241 SdHoareTripleChecker+Valid, 2495 SdHoareTripleChecker+Invalid, 7457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 676 IncrementalHoareTripleChecker+Valid, 6781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-12-02 06:05:42,184 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3241 Valid, 2495 Invalid, 7457 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [676 Valid, 6781 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-12-02 06:05:42,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109036 states. [2024-12-02 06:05:45,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109036 to 108036. [2024-12-02 06:05:46,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108036 states, 83444 states have (on average 1.6039140022050717) internal successors, (133837), 86670 states have internal predecessors, (133837), 18908 states have call successors, (18908), 5347 states have call predecessors, (18908), 5683 states have return successors, (63659), 18960 states have call predecessors, (63659), 18842 states have call successors, (63659) [2024-12-02 06:05:47,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108036 states to 108036 states and 216404 transitions. [2024-12-02 06:05:47,235 INFO L78 Accepts]: Start accepts. Automaton has 108036 states and 216404 transitions. Word has length 190 [2024-12-02 06:05:47,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:05:47,235 INFO L471 AbstractCegarLoop]: Abstraction has 108036 states and 216404 transitions. [2024-12-02 06:05:47,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 4 states have call successors, (23), 4 states have call predecessors, (23), 5 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2024-12-02 06:05:47,235 INFO L276 IsEmpty]: Start isEmpty. Operand 108036 states and 216404 transitions. [2024-12-02 06:05:47,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2024-12-02 06:05:47,240 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:05:47,241 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 6, 5, 5, 4, 4, 4, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:05:47,249 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90657ff5-8646-442d-9b44-6800f6183d13/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 06:05:47,441 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90657ff5-8646-442d-9b44-6800f6183d13/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-12-02 06:05:47,441 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:05:47,441 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:05:47,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1972189521, now seen corresponding path program 1 times [2024-12-02 06:05:47,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:05:47,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038986051] [2024-12-02 06:05:47,442 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:05:47,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:05:47,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:05:48,003 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 25 proven. 32 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2024-12-02 06:05:48,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:05:48,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038986051] [2024-12-02 06:05:48,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038986051] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:05:48,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1019373638] [2024-12-02 06:05:48,004 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:05:48,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:05:48,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90657ff5-8646-442d-9b44-6800f6183d13/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:05:48,007 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90657ff5-8646-442d-9b44-6800f6183d13/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:05:48,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90657ff5-8646-442d-9b44-6800f6183d13/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 06:05:48,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:05:48,627 INFO L256 TraceCheckSpWp]: Trace formula consists of 2588 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-02 06:05:48,636 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:05:48,931 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-12-02 06:05:48,931 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 06:05:48,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1019373638] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:05:48,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 06:05:48,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2024-12-02 06:05:48,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821045058] [2024-12-02 06:05:48,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:05:48,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 06:05:48,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:05:48,933 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 06:05:48,933 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-12-02 06:05:48,934 INFO L87 Difference]: Start difference. First operand 108036 states and 216404 transitions. Second operand has 6 states, 6 states have (on average 24.5) internal successors, (147), 5 states have internal predecessors, (147), 3 states have call successors, (31), 4 states have call predecessors, (31), 4 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2024-12-02 06:06:02,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:06:02,773 INFO L93 Difference]: Finished difference Result 352013 states and 709008 transitions. [2024-12-02 06:06:02,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 06:06:02,773 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.5) internal successors, (147), 5 states have internal predecessors, (147), 3 states have call successors, (31), 4 states have call predecessors, (31), 4 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) Word has length 257 [2024-12-02 06:06:02,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:06:04,587 INFO L225 Difference]: With dead ends: 352013 [2024-12-02 06:06:04,587 INFO L226 Difference]: Without dead ends: 244058 [2024-12-02 06:06:05,626 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-12-02 06:06:05,627 INFO L435 NwaCegarLoop]: 782 mSDtfsCounter, 3828 mSDsluCounter, 980 mSDsCounter, 0 mSdLazyCounter, 3269 mSolverCounterSat, 745 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4032 SdHoareTripleChecker+Valid, 1762 SdHoareTripleChecker+Invalid, 4014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 745 IncrementalHoareTripleChecker+Valid, 3269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-12-02 06:06:05,627 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4032 Valid, 1762 Invalid, 4014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [745 Valid, 3269 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-12-02 06:06:05,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244058 states. [2024-12-02 06:06:15,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244058 to 222322. [2024-12-02 06:06:15,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222322 states, 173159 states have (on average 1.5918779849733482) internal successors, (275648), 177700 states have internal predecessors, (275648), 38034 states have call successors, (38034), 9922 states have call predecessors, (38034), 11128 states have return successors, (126973), 37452 states have call predecessors, (126973), 37964 states have call successors, (126973) [2024-12-02 06:06:17,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222322 states to 222322 states and 440655 transitions. [2024-12-02 06:06:17,925 INFO L78 Accepts]: Start accepts. Automaton has 222322 states and 440655 transitions. Word has length 257 [2024-12-02 06:06:17,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:06:17,926 INFO L471 AbstractCegarLoop]: Abstraction has 222322 states and 440655 transitions. [2024-12-02 06:06:17,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.5) internal successors, (147), 5 states have internal predecessors, (147), 3 states have call successors, (31), 4 states have call predecessors, (31), 4 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2024-12-02 06:06:17,926 INFO L276 IsEmpty]: Start isEmpty. Operand 222322 states and 440655 transitions. [2024-12-02 06:06:17,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2024-12-02 06:06:17,948 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:06:17,948 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:06:17,960 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90657ff5-8646-442d-9b44-6800f6183d13/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 06:06:18,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90657ff5-8646-442d-9b44-6800f6183d13/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:06:18,149 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:06:18,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:06:18,149 INFO L85 PathProgramCache]: Analyzing trace with hash -445894717, now seen corresponding path program 1 times [2024-12-02 06:06:18,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:06:18,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890480642] [2024-12-02 06:06:18,149 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:06:18,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:06:18,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:06:18,643 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2024-12-02 06:06:18,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:06:18,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890480642] [2024-12-02 06:06:18,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890480642] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:06:18,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:06:18,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 06:06:18,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157851424] [2024-12-02 06:06:18,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:06:18,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 06:06:18,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:06:18,645 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 06:06:18,645 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 06:06:18,645 INFO L87 Difference]: Start difference. First operand 222322 states and 440655 transitions. Second operand has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 7 states have internal predecessors, (121), 5 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (25), 5 states have call predecessors, (25), 5 states have call successors, (25) [2024-12-02 06:06:43,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:06:43,910 INFO L93 Difference]: Finished difference Result 610728 states and 1420398 transitions. [2024-12-02 06:06:43,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 06:06:43,911 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 7 states have internal predecessors, (121), 5 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (25), 5 states have call predecessors, (25), 5 states have call successors, (25) Word has length 248 [2024-12-02 06:06:43,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:06:46,982 INFO L225 Difference]: With dead ends: 610728 [2024-12-02 06:06:46,982 INFO L226 Difference]: Without dead ends: 388257 [2024-12-02 06:06:49,807 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 06:06:49,808 INFO L435 NwaCegarLoop]: 706 mSDtfsCounter, 2200 mSDsluCounter, 1730 mSDsCounter, 0 mSdLazyCounter, 4425 mSolverCounterSat, 750 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2300 SdHoareTripleChecker+Valid, 2436 SdHoareTripleChecker+Invalid, 5175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 750 IncrementalHoareTripleChecker+Valid, 4425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-12-02 06:06:49,808 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2300 Valid, 2436 Invalid, 5175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [750 Valid, 4425 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-12-02 06:06:50,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388257 states. [2024-12-02 06:07:09,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388257 to 346251. [2024-12-02 06:07:09,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346251 states, 260296 states have (on average 1.5323477886713588) internal successors, (398864), 269025 states have internal predecessors, (398864), 67386 states have call successors, (67386), 15732 states have call predecessors, (67386), 18568 states have return successors, (228700), 67861 states have call predecessors, (228700), 67265 states have call successors, (228700) [2024-12-02 06:07:14,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346251 states to 346251 states and 694950 transitions. [2024-12-02 06:07:14,359 INFO L78 Accepts]: Start accepts. Automaton has 346251 states and 694950 transitions. Word has length 248 [2024-12-02 06:07:14,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:07:14,360 INFO L471 AbstractCegarLoop]: Abstraction has 346251 states and 694950 transitions. [2024-12-02 06:07:14,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 7 states have internal predecessors, (121), 5 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (25), 5 states have call predecessors, (25), 5 states have call successors, (25) [2024-12-02 06:07:14,360 INFO L276 IsEmpty]: Start isEmpty. Operand 346251 states and 694950 transitions. [2024-12-02 06:07:14,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2024-12-02 06:07:14,383 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:07:14,384 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:07:14,384 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-12-02 06:07:14,384 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:07:14,384 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:07:14,384 INFO L85 PathProgramCache]: Analyzing trace with hash -826532130, now seen corresponding path program 1 times [2024-12-02 06:07:14,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:07:14,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322736991] [2024-12-02 06:07:14,384 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:07:14,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:07:14,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:07:14,927 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 12 proven. 32 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2024-12-02 06:07:14,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:07:14,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322736991] [2024-12-02 06:07:14,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322736991] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:07:14,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535437895] [2024-12-02 06:07:14,927 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:07:14,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:07:14,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90657ff5-8646-442d-9b44-6800f6183d13/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:07:14,929 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90657ff5-8646-442d-9b44-6800f6183d13/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:07:14,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90657ff5-8646-442d-9b44-6800f6183d13/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 06:07:15,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:07:15,296 INFO L256 TraceCheckSpWp]: Trace formula consists of 2622 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 06:07:15,301 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:07:15,435 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2024-12-02 06:07:15,435 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 06:07:15,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1535437895] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:07:15,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 06:07:15,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 15 [2024-12-02 06:07:15,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307114494] [2024-12-02 06:07:15,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:07:15,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 06:07:15,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:07:15,436 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 06:07:15,437 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2024-12-02 06:07:15,437 INFO L87 Difference]: Start difference. First operand 346251 states and 694950 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28)