./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec9_product27.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_a03333f4-9b8c-4f64-990b-53f3abe4ef4f/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03333f4-9b8c-4f64-990b-53f3abe4ef4f/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_a03333f4-9b8c-4f64-990b-53f3abe4ef4f/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03333f4-9b8c-4f64-990b-53f3abe4ef4f/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec9_product27.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03333f4-9b8c-4f64-990b-53f3abe4ef4f/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_a03333f4-9b8c-4f64-990b-53f3abe4ef4f/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 11bb1f05736dca729c358ce9b340534ff3d0ef3cd2b5d7b8f4dea43dade9112f --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 13:49:55,079 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 13:49:55,136 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03333f4-9b8c-4f64-990b-53f3abe4ef4f/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 13:49:55,141 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 13:49:55,141 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 13:49:55,163 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 13:49:55,163 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 13:49:55,164 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 13:49:55,164 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 13:49:55,164 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 13:49:55,164 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 13:49:55,164 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 13:49:55,165 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 13:49:55,165 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 13:49:55,165 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 13:49:55,165 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 13:49:55,165 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 13:49:55,165 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 13:49:55,165 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 13:49:55,165 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 13:49:55,165 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 13:49:55,165 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 13:49:55,166 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 13:49:55,166 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 13:49:55,166 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 13:49:55,166 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 13:49:55,166 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 13:49:55,166 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 13:49:55,166 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 13:49:55,166 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 13:49:55,166 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 13:49:55,166 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 13:49:55,166 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 13:49:55,166 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 13:49:55,167 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 13:49:55,167 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 13:49:55,167 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 13:49:55,167 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 13:49:55,167 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 13:49:55,167 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 13:49:55,167 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 13:49:55,167 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 13:49:55,167 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 13:49:55,167 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 13:49:55,167 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 13:49:55,168 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 13:49:55,168 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 13:49:55,168 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 13:49:55,168 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_a03333f4-9b8c-4f64-990b-53f3abe4ef4f/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 -> 11bb1f05736dca729c358ce9b340534ff3d0ef3cd2b5d7b8f4dea43dade9112f [2024-12-02 13:49:55,402 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 13:49:55,411 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 13:49:55,413 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 13:49:55,414 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 13:49:55,415 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 13:49:55,416 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03333f4-9b8c-4f64-990b-53f3abe4ef4f/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/product-lines/elevator_spec9_product27.cil.c [2024-12-02 13:49:58,173 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03333f4-9b8c-4f64-990b-53f3abe4ef4f/bin/uautomizer-verify-84ZbGMXZE1/data/c834cd804/97a78e7b226646d8bb3107a6ad8a8581/FLAG354b106eb [2024-12-02 13:49:58,441 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 13:49:58,442 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03333f4-9b8c-4f64-990b-53f3abe4ef4f/sv-benchmarks/c/product-lines/elevator_spec9_product27.cil.c [2024-12-02 13:49:58,461 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03333f4-9b8c-4f64-990b-53f3abe4ef4f/bin/uautomizer-verify-84ZbGMXZE1/data/c834cd804/97a78e7b226646d8bb3107a6ad8a8581/FLAG354b106eb [2024-12-02 13:49:58,476 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03333f4-9b8c-4f64-990b-53f3abe4ef4f/bin/uautomizer-verify-84ZbGMXZE1/data/c834cd804/97a78e7b226646d8bb3107a6ad8a8581 [2024-12-02 13:49:58,478 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 13:49:58,479 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 13:49:58,481 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 13:49:58,481 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 13:49:58,485 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 13:49:58,486 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:49:58" (1/1) ... [2024-12-02 13:49:58,487 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49242aa4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:49:58, skipping insertion in model container [2024-12-02 13:49:58,487 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:49:58" (1/1) ... [2024-12-02 13:49:58,527 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 13:49:58,960 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_a03333f4-9b8c-4f64-990b-53f3abe4ef4f/sv-benchmarks/c/product-lines/elevator_spec9_product27.cil.c[66437,66450] [2024-12-02 13:49:58,973 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 13:49:58,984 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 13:49:58,992 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [48] [2024-12-02 13:49:58,993 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [414] [2024-12-02 13:49:58,994 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [516] [2024-12-02 13:49:58,994 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [873] [2024-12-02 13:49:58,994 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [2432] [2024-12-02 13:49:58,994 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [3093] [2024-12-02 13:49:58,994 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [3105] [2024-12-02 13:49:58,994 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification9_spec.i","") [3114] [2024-12-02 13:49:58,994 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [3273] [2024-12-02 13:49:58,994 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [3308] [2024-12-02 13:49:59,082 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_a03333f4-9b8c-4f64-990b-53f3abe4ef4f/sv-benchmarks/c/product-lines/elevator_spec9_product27.cil.c[66437,66450] [2024-12-02 13:49:59,089 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 13:49:59,113 INFO L204 MainTranslator]: Completed translation [2024-12-02 13:49:59,114 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:49:59 WrapperNode [2024-12-02 13:49:59,114 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 13:49:59,115 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 13:49:59,115 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 13:49:59,115 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 13:49:59,121 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:49:59" (1/1) ... [2024-12-02 13:49:59,140 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:49:59" (1/1) ... [2024-12-02 13:49:59,179 INFO L138 Inliner]: procedures = 95, calls = 339, calls flagged for inlining = 27, calls inlined = 24, statements flattened = 1120 [2024-12-02 13:49:59,179 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 13:49:59,180 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 13:49:59,180 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 13:49:59,180 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 13:49:59,189 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:49:59" (1/1) ... [2024-12-02 13:49:59,189 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:49:59" (1/1) ... [2024-12-02 13:49:59,193 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:49:59" (1/1) ... [2024-12-02 13:49:59,215 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. The 0 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. [2024-12-02 13:49:59,215 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:49:59" (1/1) ... [2024-12-02 13:49:59,216 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:49:59" (1/1) ... [2024-12-02 13:49:59,233 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:49:59" (1/1) ... [2024-12-02 13:49:59,236 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:49:59" (1/1) ... [2024-12-02 13:49:59,248 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:49:59" (1/1) ... [2024-12-02 13:49:59,254 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:49:59" (1/1) ... [2024-12-02 13:49:59,257 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:49:59" (1/1) ... [2024-12-02 13:49:59,266 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 13:49:59,267 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 13:49:59,267 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 13:49:59,267 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 13:49:59,268 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:49:59" (1/1) ... [2024-12-02 13:49:59,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 13:49:59,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03333f4-9b8c-4f64-990b-53f3abe4ef4f/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:49:59,312 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03333f4-9b8c-4f64-990b-53f3abe4ef4f/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 13:49:59,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03333f4-9b8c-4f64-990b-53f3abe4ef4f/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 13:49:59,338 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 13:49:59,338 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2024-12-02 13:49:59,338 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2024-12-02 13:49:59,338 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2024-12-02 13:49:59,338 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2024-12-02 13:49:59,339 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-12-02 13:49:59,339 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-12-02 13:49:59,339 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2024-12-02 13:49:59,339 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2024-12-02 13:49:59,339 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-12-02 13:49:59,339 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-12-02 13:49:59,339 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-12-02 13:49:59,339 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-12-02 13:49:59,339 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-12-02 13:49:59,339 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-12-02 13:49:59,339 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-12-02 13:49:59,339 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-12-02 13:49:59,339 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-12-02 13:49:59,339 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-12-02 13:49:59,339 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-12-02 13:49:59,340 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-12-02 13:49:59,340 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-12-02 13:49:59,340 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-12-02 13:49:59,340 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-12-02 13:49:59,340 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-12-02 13:49:59,340 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2024-12-02 13:49:59,340 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2024-12-02 13:49:59,340 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-12-02 13:49:59,340 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-12-02 13:49:59,340 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2024-12-02 13:49:59,340 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2024-12-02 13:49:59,340 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-12-02 13:49:59,340 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-12-02 13:49:59,340 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-12-02 13:49:59,340 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-12-02 13:49:59,340 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-12-02 13:49:59,340 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-12-02 13:49:59,340 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-12-02 13:49:59,341 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-12-02 13:49:59,341 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2024-12-02 13:49:59,341 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2024-12-02 13:49:59,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 13:49:59,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 13:49:59,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-12-02 13:49:59,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-12-02 13:49:59,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-12-02 13:49:59,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-12-02 13:49:59,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-12-02 13:49:59,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-12-02 13:49:59,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-12-02 13:49:59,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-12-02 13:49:59,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-12-02 13:49:59,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-12-02 13:49:59,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-12-02 13:49:59,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-12-02 13:49:59,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-12-02 13:49:59,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-12-02 13:49:59,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-12-02 13:49:59,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-12-02 13:49:59,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2024-12-02 13:49:59,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2024-12-02 13:49:59,342 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-12-02 13:49:59,342 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-12-02 13:49:59,342 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-12-02 13:49:59,342 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-12-02 13:49:59,342 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-12-02 13:49:59,342 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-12-02 13:49:59,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 13:49:59,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 13:49:59,342 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-12-02 13:49:59,342 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-12-02 13:49:59,498 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 13:49:59,500 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 13:50:00,584 INFO L? ?]: Removed 455 outVars from TransFormulas that were not future-live. [2024-12-02 13:50:00,585 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 13:50:00,605 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 13:50:00,606 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 13:50:00,606 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:50:00 BoogieIcfgContainer [2024-12-02 13:50:00,606 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 13:50:00,608 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 13:50:00,608 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 13:50:00,613 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 13:50:00,613 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 01:49:58" (1/3) ... [2024-12-02 13:50:00,614 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13c65da7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:50:00, skipping insertion in model container [2024-12-02 13:50:00,614 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:49:59" (2/3) ... [2024-12-02 13:50:00,614 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13c65da7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:50:00, skipping insertion in model container [2024-12-02 13:50:00,614 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:50:00" (3/3) ... [2024-12-02 13:50:00,615 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec9_product27.cil.c [2024-12-02 13:50:00,630 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 13:50:00,632 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec9_product27.cil.c that has 25 procedures, 559 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 13:50:00,694 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 13:50:00,705 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;@5999b585, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 13:50:00,705 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 13:50:00,711 INFO L276 IsEmpty]: Start isEmpty. Operand has 559 states, 440 states have (on average 1.6954545454545455) internal successors, (746), 461 states have internal predecessors, (746), 93 states have call successors, (93), 24 states have call predecessors, (93), 24 states have return successors, (93), 87 states have call predecessors, (93), 93 states have call successors, (93) [2024-12-02 13:50:00,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-12-02 13:50:00,730 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:50:00,731 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 13:50:00,731 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:50:00,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:50:00,735 INFO L85 PathProgramCache]: Analyzing trace with hash -372885085, now seen corresponding path program 1 times [2024-12-02 13:50:00,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:50:00,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149335158] [2024-12-02 13:50:00,741 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:50:00,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:50:00,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:50:01,264 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-02 13:50:01,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:50:01,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149335158] [2024-12-02 13:50:01,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149335158] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:50:01,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:50:01,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 13:50:01,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545727057] [2024-12-02 13:50:01,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:50:01,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 13:50:01,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:50:01,286 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 13:50:01,287 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 13:50:01,289 INFO L87 Difference]: Start difference. First operand has 559 states, 440 states have (on average 1.6954545454545455) internal successors, (746), 461 states have internal predecessors, (746), 93 states have call successors, (93), 24 states have call predecessors, (93), 24 states have return successors, (93), 87 states have call predecessors, (93), 93 states have call successors, (93) Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 13:50:01,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:50:01,423 INFO L93 Difference]: Finished difference Result 1098 states and 1839 transitions. [2024-12-02 13:50:01,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 13:50:01,425 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 104 [2024-12-02 13:50:01,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:50:01,440 INFO L225 Difference]: With dead ends: 1098 [2024-12-02 13:50:01,440 INFO L226 Difference]: Without dead ends: 551 [2024-12-02 13:50:01,448 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 13:50:01,450 INFO L435 NwaCegarLoop]: 911 mSDtfsCounter, 5 mSDsluCounter, 1818 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2729 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:50:01,451 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2729 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:50:01,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2024-12-02 13:50:01,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 551. [2024-12-02 13:50:01,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551 states, 434 states have (on average 1.6912442396313363) internal successors, (734), 453 states have internal predecessors, (734), 93 states have call successors, (93), 24 states have call predecessors, (93), 23 states have return successors, (88), 86 states have call predecessors, (88), 88 states have call successors, (88) [2024-12-02 13:50:01,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 915 transitions. [2024-12-02 13:50:01,528 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 915 transitions. Word has length 104 [2024-12-02 13:50:01,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:50:01,528 INFO L471 AbstractCegarLoop]: Abstraction has 551 states and 915 transitions. [2024-12-02 13:50:01,529 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 13:50:01,529 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 915 transitions. [2024-12-02 13:50:01,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-12-02 13:50:01,534 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:50:01,535 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 13:50:01,535 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 13:50:01,535 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:50:01,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:50:01,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1200659724, now seen corresponding path program 1 times [2024-12-02 13:50:01,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:50:01,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849501209] [2024-12-02 13:50:01,536 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:50:01,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:50:01,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:50:01,749 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-02 13:50:01,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:50:01,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849501209] [2024-12-02 13:50:01,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849501209] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:50:01,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:50:01,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 13:50:01,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521227143] [2024-12-02 13:50:01,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:50:01,751 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 13:50:01,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:50:01,751 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 13:50:01,751 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 13:50:01,752 INFO L87 Difference]: Start difference. First operand 551 states and 915 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 13:50:01,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:50:01,816 INFO L93 Difference]: Finished difference Result 1084 states and 1807 transitions. [2024-12-02 13:50:01,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 13:50:01,817 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 106 [2024-12-02 13:50:01,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:50:01,822 INFO L225 Difference]: With dead ends: 1084 [2024-12-02 13:50:01,822 INFO L226 Difference]: Without dead ends: 551 [2024-12-02 13:50:01,825 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 13:50:01,825 INFO L435 NwaCegarLoop]: 904 mSDtfsCounter, 4 mSDsluCounter, 1804 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2708 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:50:01,826 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2708 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:50:01,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2024-12-02 13:50:01,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 551. [2024-12-02 13:50:01,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551 states, 434 states have (on average 1.6889400921658986) internal successors, (733), 453 states have internal predecessors, (733), 93 states have call successors, (93), 24 states have call predecessors, (93), 23 states have return successors, (88), 86 states have call predecessors, (88), 88 states have call successors, (88) [2024-12-02 13:50:01,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 914 transitions. [2024-12-02 13:50:01,856 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 914 transitions. Word has length 106 [2024-12-02 13:50:01,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:50:01,857 INFO L471 AbstractCegarLoop]: Abstraction has 551 states and 914 transitions. [2024-12-02 13:50:01,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 13:50:01,857 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 914 transitions. [2024-12-02 13:50:01,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-12-02 13:50:01,861 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:50:01,861 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 13:50:01,861 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 13:50:01,862 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:50:01,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:50:01,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1440418758, now seen corresponding path program 1 times [2024-12-02 13:50:01,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:50:01,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641657395] [2024-12-02 13:50:01,862 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:50:01,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:50:01,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:50:02,035 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-02 13:50:02,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:50:02,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641657395] [2024-12-02 13:50:02,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641657395] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:50:02,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:50:02,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 13:50:02,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041310082] [2024-12-02 13:50:02,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:50:02,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 13:50:02,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:50:02,036 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 13:50:02,037 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 13:50:02,037 INFO L87 Difference]: Start difference. First operand 551 states and 914 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, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 13:50:02,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:50:02,099 INFO L93 Difference]: Finished difference Result 1084 states and 1806 transitions. [2024-12-02 13:50:02,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 13:50:02,100 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, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 107 [2024-12-02 13:50:02,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:50:02,105 INFO L225 Difference]: With dead ends: 1084 [2024-12-02 13:50:02,105 INFO L226 Difference]: Without dead ends: 551 [2024-12-02 13:50:02,107 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 13:50:02,108 INFO L435 NwaCegarLoop]: 904 mSDtfsCounter, 3 mSDsluCounter, 1804 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2708 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 13:50:02,108 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2708 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:50:02,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2024-12-02 13:50:02,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 551. [2024-12-02 13:50:02,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551 states, 434 states have (on average 1.6866359447004609) internal successors, (732), 453 states have internal predecessors, (732), 93 states have call successors, (93), 24 states have call predecessors, (93), 23 states have return successors, (88), 86 states have call predecessors, (88), 88 states have call successors, (88) [2024-12-02 13:50:02,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 913 transitions. [2024-12-02 13:50:02,135 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 913 transitions. Word has length 107 [2024-12-02 13:50:02,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:50:02,135 INFO L471 AbstractCegarLoop]: Abstraction has 551 states and 913 transitions. [2024-12-02 13:50:02,135 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, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 13:50:02,135 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 913 transitions. [2024-12-02 13:50:02,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-12-02 13:50:02,139 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:50:02,139 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 13:50:02,139 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 13:50:02,139 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:50:02,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:50:02,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1484003760, now seen corresponding path program 1 times [2024-12-02 13:50:02,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:50:02,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210292006] [2024-12-02 13:50:02,140 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:50:02,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:50:02,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:50:02,302 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-02 13:50:02,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:50:02,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210292006] [2024-12-02 13:50:02,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210292006] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:50:02,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:50:02,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 13:50:02,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866252009] [2024-12-02 13:50:02,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:50:02,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 13:50:02,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:50:02,303 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 13:50:02,304 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 13:50:02,304 INFO L87 Difference]: Start difference. First operand 551 states and 913 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 13:50:02,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:50:02,342 INFO L93 Difference]: Finished difference Result 1084 states and 1805 transitions. [2024-12-02 13:50:02,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 13:50:02,343 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 108 [2024-12-02 13:50:02,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:50:02,346 INFO L225 Difference]: With dead ends: 1084 [2024-12-02 13:50:02,346 INFO L226 Difference]: Without dead ends: 551 [2024-12-02 13:50:02,348 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 13:50:02,349 INFO L435 NwaCegarLoop]: 904 mSDtfsCounter, 2 mSDsluCounter, 1804 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2708 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:50:02,349 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2708 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:50:02,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2024-12-02 13:50:02,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 551. [2024-12-02 13:50:02,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551 states, 434 states have (on average 1.6843317972350231) internal successors, (731), 453 states have internal predecessors, (731), 93 states have call successors, (93), 24 states have call predecessors, (93), 23 states have return successors, (88), 86 states have call predecessors, (88), 88 states have call successors, (88) [2024-12-02 13:50:02,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 912 transitions. [2024-12-02 13:50:02,367 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 912 transitions. Word has length 108 [2024-12-02 13:50:02,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:50:02,367 INFO L471 AbstractCegarLoop]: Abstraction has 551 states and 912 transitions. [2024-12-02 13:50:02,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 13:50:02,367 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 912 transitions. [2024-12-02 13:50:02,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-12-02 13:50:02,371 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:50:02,371 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:50:02,371 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 13:50:02,371 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:50:02,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:50:02,372 INFO L85 PathProgramCache]: Analyzing trace with hash 581160714, now seen corresponding path program 1 times [2024-12-02 13:50:02,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:50:02,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297610788] [2024-12-02 13:50:02,372 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:50:02,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:50:02,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:50:02,482 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-02 13:50:02,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:50:02,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297610788] [2024-12-02 13:50:02,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297610788] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:50:02,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:50:02,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 13:50:02,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978043785] [2024-12-02 13:50:02,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:50:02,483 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 13:50:02,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:50:02,483 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 13:50:02,483 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 13:50:02,484 INFO L87 Difference]: Start difference. First operand 551 states and 912 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 13:50:02,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:50:02,520 INFO L93 Difference]: Finished difference Result 1084 states and 1804 transitions. [2024-12-02 13:50:02,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 13:50:02,521 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 109 [2024-12-02 13:50:02,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:50:02,524 INFO L225 Difference]: With dead ends: 1084 [2024-12-02 13:50:02,525 INFO L226 Difference]: Without dead ends: 551 [2024-12-02 13:50:02,526 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 13:50:02,527 INFO L435 NwaCegarLoop]: 904 mSDtfsCounter, 1 mSDsluCounter, 1804 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2708 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:50:02,527 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2708 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:50:02,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2024-12-02 13:50:02,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 551. [2024-12-02 13:50:02,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551 states, 434 states have (on average 1.6820276497695852) internal successors, (730), 453 states have internal predecessors, (730), 93 states have call successors, (93), 24 states have call predecessors, (93), 23 states have return successors, (88), 86 states have call predecessors, (88), 88 states have call successors, (88) [2024-12-02 13:50:02,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 911 transitions. [2024-12-02 13:50:02,547 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 911 transitions. Word has length 109 [2024-12-02 13:50:02,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:50:02,547 INFO L471 AbstractCegarLoop]: Abstraction has 551 states and 911 transitions. [2024-12-02 13:50:02,548 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 13:50:02,548 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 911 transitions. [2024-12-02 13:50:02,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-12-02 13:50:02,549 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:50:02,550 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:50:02,550 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 13:50:02,550 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:50:02,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:50:02,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1590268012, now seen corresponding path program 1 times [2024-12-02 13:50:02,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:50:02,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997154312] [2024-12-02 13:50:02,550 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:50:02,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:50:02,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:50:02,708 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-02 13:50:02,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:50:02,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997154312] [2024-12-02 13:50:02,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997154312] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:50:02,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:50:02,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 13:50:02,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72494566] [2024-12-02 13:50:02,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:50:02,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 13:50:02,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:50:02,709 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 13:50:02,709 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 13:50:02,710 INFO L87 Difference]: Start difference. First operand 551 states and 911 transitions. Second operand has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-12-02 13:50:02,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:50:02,800 INFO L93 Difference]: Finished difference Result 1050 states and 1736 transitions. [2024-12-02 13:50:02,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 13:50:02,800 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 110 [2024-12-02 13:50:02,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:50:02,804 INFO L225 Difference]: With dead ends: 1050 [2024-12-02 13:50:02,804 INFO L226 Difference]: Without dead ends: 566 [2024-12-02 13:50:02,806 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 13:50:02,806 INFO L435 NwaCegarLoop]: 901 mSDtfsCounter, 91 mSDsluCounter, 4424 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 5325 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:50:02,806 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 5325 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:50:02,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2024-12-02 13:50:02,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 564. [2024-12-02 13:50:02,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 444 states have (on average 1.677927927927928) internal successors, (745), 465 states have internal predecessors, (745), 94 states have call successors, (94), 24 states have call predecessors, (94), 25 states have return successors, (91), 87 states have call predecessors, (91), 89 states have call successors, (91) [2024-12-02 13:50:02,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 930 transitions. [2024-12-02 13:50:02,827 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 930 transitions. Word has length 110 [2024-12-02 13:50:02,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:50:02,828 INFO L471 AbstractCegarLoop]: Abstraction has 564 states and 930 transitions. [2024-12-02 13:50:02,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-12-02 13:50:02,828 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 930 transitions. [2024-12-02 13:50:02,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-12-02 13:50:02,832 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:50:02,832 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:50:02,832 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 13:50:02,833 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:50:02,833 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:50:02,833 INFO L85 PathProgramCache]: Analyzing trace with hash -2032022507, now seen corresponding path program 1 times [2024-12-02 13:50:02,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:50:02,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113821669] [2024-12-02 13:50:02,833 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:50:02,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:50:02,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:50:02,913 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-02 13:50:02,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:50:02,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113821669] [2024-12-02 13:50:02,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113821669] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:50:02,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:50:02,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 13:50:02,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404583657] [2024-12-02 13:50:02,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:50:02,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 13:50:02,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:50:02,915 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 13:50:02,915 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 13:50:02,915 INFO L87 Difference]: Start difference. First operand 564 states and 930 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 13:50:02,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:50:02,956 INFO L93 Difference]: Finished difference Result 1102 states and 1830 transitions. [2024-12-02 13:50:02,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 13:50:02,957 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 110 [2024-12-02 13:50:02,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:50:02,960 INFO L225 Difference]: With dead ends: 1102 [2024-12-02 13:50:02,960 INFO L226 Difference]: Without dead ends: 545 [2024-12-02 13:50:02,962 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 13:50:02,963 INFO L435 NwaCegarLoop]: 905 mSDtfsCounter, 0 mSDsluCounter, 1805 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2710 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:50:02,963 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2710 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:50:02,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2024-12-02 13:50:02,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 545. [2024-12-02 13:50:02,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545 states, 428 states have (on average 1.6728971962616823) internal successors, (716), 447 states have internal predecessors, (716), 93 states have call successors, (93), 24 states have call predecessors, (93), 23 states have return successors, (88), 86 states have call predecessors, (88), 88 states have call successors, (88) [2024-12-02 13:50:02,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 897 transitions. [2024-12-02 13:50:02,979 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 897 transitions. Word has length 110 [2024-12-02 13:50:02,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:50:02,980 INFO L471 AbstractCegarLoop]: Abstraction has 545 states and 897 transitions. [2024-12-02 13:50:02,980 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 13:50:02,980 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 897 transitions. [2024-12-02 13:50:02,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-12-02 13:50:02,994 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:50:02,994 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:50:02,994 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 13:50:02,995 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:50:02,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:50:02,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1780264855, now seen corresponding path program 1 times [2024-12-02 13:50:02,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:50:02,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332654215] [2024-12-02 13:50:02,995 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:50:02,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:50:03,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:50:03,113 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-02 13:50:03,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:50:03,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332654215] [2024-12-02 13:50:03,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332654215] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:50:03,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:50:03,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 13:50:03,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030919712] [2024-12-02 13:50:03,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:50:03,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 13:50:03,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:50:03,114 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 13:50:03,114 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 13:50:03,115 INFO L87 Difference]: Start difference. First operand 545 states and 897 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 2 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 13:50:03,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:50:03,301 INFO L93 Difference]: Finished difference Result 1047 states and 1728 transitions. [2024-12-02 13:50:03,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 13:50:03,301 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 2 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 111 [2024-12-02 13:50:03,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:50:03,306 INFO L225 Difference]: With dead ends: 1047 [2024-12-02 13:50:03,306 INFO L226 Difference]: Without dead ends: 554 [2024-12-02 13:50:03,307 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-12-02 13:50:03,308 INFO L435 NwaCegarLoop]: 854 mSDtfsCounter, 55 mSDsluCounter, 3387 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 4241 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 13:50:03,308 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 4241 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 13:50:03,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2024-12-02 13:50:03,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 545. [2024-12-02 13:50:03,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545 states, 428 states have (on average 1.6635514018691588) internal successors, (712), 447 states have internal predecessors, (712), 93 states have call successors, (93), 24 states have call predecessors, (93), 23 states have return successors, (88), 86 states have call predecessors, (88), 88 states have call successors, (88) [2024-12-02 13:50:03,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 893 transitions. [2024-12-02 13:50:03,327 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 893 transitions. Word has length 111 [2024-12-02 13:50:03,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:50:03,327 INFO L471 AbstractCegarLoop]: Abstraction has 545 states and 893 transitions. [2024-12-02 13:50:03,327 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 2 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 13:50:03,327 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 893 transitions. [2024-12-02 13:50:03,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-12-02 13:50:03,330 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:50:03,330 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:50:03,330 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 13:50:03,330 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:50:03,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:50:03,330 INFO L85 PathProgramCache]: Analyzing trace with hash 168538993, now seen corresponding path program 1 times [2024-12-02 13:50:03,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:50:03,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351250114] [2024-12-02 13:50:03,331 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:50:03,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:50:03,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:50:03,448 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-02 13:50:03,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:50:03,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351250114] [2024-12-02 13:50:03,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351250114] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:50:03,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:50:03,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 13:50:03,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045360437] [2024-12-02 13:50:03,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:50:03,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 13:50:03,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:50:03,449 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 13:50:03,449 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 13:50:03,450 INFO L87 Difference]: Start difference. First operand 545 states and 893 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 2 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 13:50:03,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:50:03,621 INFO L93 Difference]: Finished difference Result 1047 states and 1724 transitions. [2024-12-02 13:50:03,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 13:50:03,621 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 2 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 112 [2024-12-02 13:50:03,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:50:03,625 INFO L225 Difference]: With dead ends: 1047 [2024-12-02 13:50:03,625 INFO L226 Difference]: Without dead ends: 554 [2024-12-02 13:50:03,627 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-12-02 13:50:03,627 INFO L435 NwaCegarLoop]: 854 mSDtfsCounter, 54 mSDsluCounter, 3387 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 4241 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 13:50:03,628 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 4241 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 13:50:03,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2024-12-02 13:50:03,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 545. [2024-12-02 13:50:03,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545 states, 428 states have (on average 1.6542056074766356) internal successors, (708), 447 states have internal predecessors, (708), 93 states have call successors, (93), 24 states have call predecessors, (93), 23 states have return successors, (88), 86 states have call predecessors, (88), 88 states have call successors, (88) [2024-12-02 13:50:03,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 889 transitions. [2024-12-02 13:50:03,645 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 889 transitions. Word has length 112 [2024-12-02 13:50:03,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:50:03,645 INFO L471 AbstractCegarLoop]: Abstraction has 545 states and 889 transitions. [2024-12-02 13:50:03,645 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 2 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 13:50:03,645 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 889 transitions. [2024-12-02 13:50:03,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-12-02 13:50:03,650 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:50:03,650 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:50:03,650 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 13:50:03,650 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:50:03,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:50:03,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1004308494, now seen corresponding path program 1 times [2024-12-02 13:50:03,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:50:03,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691127467] [2024-12-02 13:50:03,651 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:50:03,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:50:03,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:50:03,781 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-02 13:50:03,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:50:03,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691127467] [2024-12-02 13:50:03,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691127467] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:50:03,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:50:03,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 13:50:03,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292059385] [2024-12-02 13:50:03,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:50:03,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 13:50:03,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:50:03,782 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 13:50:03,782 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 13:50:03,783 INFO L87 Difference]: Start difference. First operand 545 states and 889 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 2 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 13:50:03,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:50:03,951 INFO L93 Difference]: Finished difference Result 1047 states and 1720 transitions. [2024-12-02 13:50:03,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 13:50:03,952 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 2 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 113 [2024-12-02 13:50:03,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:50:03,956 INFO L225 Difference]: With dead ends: 1047 [2024-12-02 13:50:03,956 INFO L226 Difference]: Without dead ends: 554 [2024-12-02 13:50:03,958 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-12-02 13:50:03,959 INFO L435 NwaCegarLoop]: 853 mSDtfsCounter, 53 mSDsluCounter, 3370 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 4223 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 13:50:03,959 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 4223 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 13:50:03,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2024-12-02 13:50:03,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 545. [2024-12-02 13:50:03,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545 states, 428 states have (on average 1.644859813084112) internal successors, (704), 447 states have internal predecessors, (704), 93 states have call successors, (93), 24 states have call predecessors, (93), 23 states have return successors, (88), 86 states have call predecessors, (88), 88 states have call successors, (88) [2024-12-02 13:50:03,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 885 transitions. [2024-12-02 13:50:03,974 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 885 transitions. Word has length 113 [2024-12-02 13:50:03,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:50:03,974 INFO L471 AbstractCegarLoop]: Abstraction has 545 states and 885 transitions. [2024-12-02 13:50:03,975 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 2 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 13:50:03,975 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 885 transitions. [2024-12-02 13:50:03,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-12-02 13:50:03,977 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:50:03,977 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:50:03,978 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 13:50:03,978 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:50:03,978 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:50:03,978 INFO L85 PathProgramCache]: Analyzing trace with hash 967461746, now seen corresponding path program 1 times [2024-12-02 13:50:03,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:50:03,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768630234] [2024-12-02 13:50:03,978 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:50:03,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:50:04,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:50:04,101 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-02 13:50:04,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:50:04,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768630234] [2024-12-02 13:50:04,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768630234] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:50:04,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:50:04,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 13:50:04,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514002639] [2024-12-02 13:50:04,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:50:04,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 13:50:04,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:50:04,102 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 13:50:04,102 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 13:50:04,102 INFO L87 Difference]: Start difference. First operand 545 states and 885 transitions. Second operand has 7 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-12-02 13:50:04,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:50:04,166 INFO L93 Difference]: Finished difference Result 1038 states and 1702 transitions. [2024-12-02 13:50:04,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 13:50:04,166 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 113 [2024-12-02 13:50:04,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:50:04,170 INFO L225 Difference]: With dead ends: 1038 [2024-12-02 13:50:04,171 INFO L226 Difference]: Without dead ends: 524 [2024-12-02 13:50:04,173 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 13:50:04,173 INFO L435 NwaCegarLoop]: 874 mSDtfsCounter, 84 mSDsluCounter, 4297 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 5171 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:50:04,174 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 5171 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:50:04,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2024-12-02 13:50:04,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 524. [2024-12-02 13:50:04,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 407 states have (on average 1.6461916461916462) internal successors, (670), 426 states have internal predecessors, (670), 93 states have call successors, (93), 24 states have call predecessors, (93), 23 states have return successors, (88), 86 states have call predecessors, (88), 88 states have call successors, (88) [2024-12-02 13:50:04,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 851 transitions. [2024-12-02 13:50:04,188 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 851 transitions. Word has length 113 [2024-12-02 13:50:04,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:50:04,188 INFO L471 AbstractCegarLoop]: Abstraction has 524 states and 851 transitions. [2024-12-02 13:50:04,188 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-12-02 13:50:04,188 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 851 transitions. [2024-12-02 13:50:04,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-12-02 13:50:04,191 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:50:04,191 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:50:04,191 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 13:50:04,191 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:50:04,191 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:50:04,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1456828244, now seen corresponding path program 1 times [2024-12-02 13:50:04,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:50:04,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658578763] [2024-12-02 13:50:04,192 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:50:04,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:50:04,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:50:04,296 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-02 13:50:04,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:50:04,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658578763] [2024-12-02 13:50:04,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658578763] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:50:04,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:50:04,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 13:50:04,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941385936] [2024-12-02 13:50:04,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:50:04,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 13:50:04,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:50:04,297 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 13:50:04,297 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 13:50:04,298 INFO L87 Difference]: Start difference. First operand 524 states and 851 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 2 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 13:50:04,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:50:04,371 INFO L93 Difference]: Finished difference Result 1017 states and 1668 transitions. [2024-12-02 13:50:04,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 13:50:04,372 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 2 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 114 [2024-12-02 13:50:04,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:50:04,375 INFO L225 Difference]: With dead ends: 1017 [2024-12-02 13:50:04,376 INFO L226 Difference]: Without dead ends: 524 [2024-12-02 13:50:04,377 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-12-02 13:50:04,377 INFO L435 NwaCegarLoop]: 834 mSDtfsCounter, 17 mSDsluCounter, 3327 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 4161 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:50:04,378 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 4161 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:50:04,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2024-12-02 13:50:04,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 524. [2024-12-02 13:50:04,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 407 states have (on average 1.6437346437346438) internal successors, (669), 426 states have internal predecessors, (669), 93 states have call successors, (93), 24 states have call predecessors, (93), 23 states have return successors, (88), 86 states have call predecessors, (88), 88 states have call successors, (88) [2024-12-02 13:50:04,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 850 transitions. [2024-12-02 13:50:04,393 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 850 transitions. Word has length 114 [2024-12-02 13:50:04,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:50:04,393 INFO L471 AbstractCegarLoop]: Abstraction has 524 states and 850 transitions. [2024-12-02 13:50:04,393 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 2 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 13:50:04,393 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 850 transitions. [2024-12-02 13:50:04,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-12-02 13:50:04,395 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:50:04,395 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:50:04,395 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 13:50:04,396 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:50:04,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:50:04,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1054024627, now seen corresponding path program 1 times [2024-12-02 13:50:04,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:50:04,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030215944] [2024-12-02 13:50:04,396 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:50:04,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:50:04,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:50:04,518 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-02 13:50:04,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:50:04,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030215944] [2024-12-02 13:50:04,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030215944] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:50:04,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:50:04,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 13:50:04,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27295897] [2024-12-02 13:50:04,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:50:04,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 13:50:04,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:50:04,520 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 13:50:04,520 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 13:50:04,520 INFO L87 Difference]: Start difference. First operand 524 states and 850 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 2 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 13:50:04,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:50:04,588 INFO L93 Difference]: Finished difference Result 1017 states and 1667 transitions. [2024-12-02 13:50:04,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 13:50:04,588 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 2 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 115 [2024-12-02 13:50:04,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:50:04,592 INFO L225 Difference]: With dead ends: 1017 [2024-12-02 13:50:04,592 INFO L226 Difference]: Without dead ends: 524 [2024-12-02 13:50:04,593 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-12-02 13:50:04,594 INFO L435 NwaCegarLoop]: 834 mSDtfsCounter, 16 mSDsluCounter, 3327 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 4161 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:50:04,594 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 4161 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:50:04,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2024-12-02 13:50:04,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 524. [2024-12-02 13:50:04,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 407 states have (on average 1.6412776412776413) internal successors, (668), 426 states have internal predecessors, (668), 93 states have call successors, (93), 24 states have call predecessors, (93), 23 states have return successors, (88), 86 states have call predecessors, (88), 88 states have call successors, (88) [2024-12-02 13:50:04,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 849 transitions. [2024-12-02 13:50:04,608 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 849 transitions. Word has length 115 [2024-12-02 13:50:04,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:50:04,609 INFO L471 AbstractCegarLoop]: Abstraction has 524 states and 849 transitions. [2024-12-02 13:50:04,609 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 2 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 13:50:04,609 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 849 transitions. [2024-12-02 13:50:04,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-12-02 13:50:04,611 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:50:04,612 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:50:04,612 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 13:50:04,612 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:50:04,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:50:04,612 INFO L85 PathProgramCache]: Analyzing trace with hash 93999591, now seen corresponding path program 1 times [2024-12-02 13:50:04,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:50:04,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163880056] [2024-12-02 13:50:04,612 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:50:04,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:50:04,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:50:04,690 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-02 13:50:04,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:50:04,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163880056] [2024-12-02 13:50:04,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163880056] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:50:04,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:50:04,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 13:50:04,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413499687] [2024-12-02 13:50:04,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:50:04,691 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 13:50:04,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:50:04,691 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 13:50:04,692 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 13:50:04,692 INFO L87 Difference]: Start difference. First operand 524 states and 849 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 13:50:04,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:50:04,729 INFO L93 Difference]: Finished difference Result 1011 states and 1655 transitions. [2024-12-02 13:50:04,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 13:50:04,729 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 116 [2024-12-02 13:50:04,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:50:04,732 INFO L225 Difference]: With dead ends: 1011 [2024-12-02 13:50:04,732 INFO L226 Difference]: Without dead ends: 524 [2024-12-02 13:50:04,734 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 13:50:04,734 INFO L435 NwaCegarLoop]: 837 mSDtfsCounter, 5 mSDsluCounter, 1664 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2501 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:50:04,735 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2501 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:50:04,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2024-12-02 13:50:04,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 524. [2024-12-02 13:50:04,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 407 states have (on average 1.6388206388206388) internal successors, (667), 426 states have internal predecessors, (667), 93 states have call successors, (93), 24 states have call predecessors, (93), 23 states have return successors, (88), 86 states have call predecessors, (88), 88 states have call successors, (88) [2024-12-02 13:50:04,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 848 transitions. [2024-12-02 13:50:04,749 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 848 transitions. Word has length 116 [2024-12-02 13:50:04,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:50:04,749 INFO L471 AbstractCegarLoop]: Abstraction has 524 states and 848 transitions. [2024-12-02 13:50:04,750 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 13:50:04,750 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 848 transitions. [2024-12-02 13:50:04,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-12-02 13:50:04,752 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:50:04,752 INFO L218 NwaCegarLoop]: trace histogram [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 13:50:04,752 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 13:50:04,752 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:50:04,753 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:50:04,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1193716264, now seen corresponding path program 1 times [2024-12-02 13:50:04,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:50:04,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525910386] [2024-12-02 13:50:04,753 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:50:04,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:50:04,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:50:04,858 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 13:50:04,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:50:04,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525910386] [2024-12-02 13:50:04,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525910386] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:50:04,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340461803] [2024-12-02 13:50:04,859 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:50:04,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:50:04,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03333f4-9b8c-4f64-990b-53f3abe4ef4f/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:50:04,861 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03333f4-9b8c-4f64-990b-53f3abe4ef4f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:50:04,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03333f4-9b8c-4f64-990b-53f3abe4ef4f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 13:50:05,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:50:05,213 INFO L256 TraceCheckSpWp]: Trace formula consists of 1466 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 13:50:05,219 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:50:05,256 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-02 13:50:05,256 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 13:50:05,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340461803] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:50:05,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 13:50:05,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-12-02 13:50:05,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115951426] [2024-12-02 13:50:05,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:50:05,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:50:05,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:50:05,257 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:50:05,257 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 13:50:05,258 INFO L87 Difference]: Start difference. First operand 524 states and 848 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2024-12-02 13:50:05,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:50:05,309 INFO L93 Difference]: Finished difference Result 1473 states and 2441 transitions. [2024-12-02 13:50:05,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:50:05,309 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 117 [2024-12-02 13:50:05,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:50:05,315 INFO L225 Difference]: With dead ends: 1473 [2024-12-02 13:50:05,315 INFO L226 Difference]: Without dead ends: 994 [2024-12-02 13:50:05,317 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 117 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 13:50:05,317 INFO L435 NwaCegarLoop]: 967 mSDtfsCounter, 833 mSDsluCounter, 787 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 833 SdHoareTripleChecker+Valid, 1754 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:50:05,318 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [833 Valid, 1754 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:50:05,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 994 states. [2024-12-02 13:50:05,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 994 to 992. [2024-12-02 13:50:05,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 992 states, 772 states have (on average 1.660621761658031) internal successors, (1282), 805 states have internal predecessors, (1282), 176 states have call successors, (176), 43 states have call predecessors, (176), 43 states have return successors, (181), 169 states have call predecessors, (181), 171 states have call successors, (181) [2024-12-02 13:50:05,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 992 states to 992 states and 1639 transitions. [2024-12-02 13:50:05,351 INFO L78 Accepts]: Start accepts. Automaton has 992 states and 1639 transitions. Word has length 117 [2024-12-02 13:50:05,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:50:05,352 INFO L471 AbstractCegarLoop]: Abstraction has 992 states and 1639 transitions. [2024-12-02 13:50:05,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2024-12-02 13:50:05,352 INFO L276 IsEmpty]: Start isEmpty. Operand 992 states and 1639 transitions. [2024-12-02 13:50:05,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-12-02 13:50:05,355 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:50:05,355 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:50:05,364 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03333f4-9b8c-4f64-990b-53f3abe4ef4f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 13:50:05,555 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03333f4-9b8c-4f64-990b-53f3abe4ef4f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-12-02 13:50:05,555 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:50:05,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:50:05,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1649370558, now seen corresponding path program 1 times [2024-12-02 13:50:05,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:50:05,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033699957] [2024-12-02 13:50:05,556 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:50:05,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:50:05,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:50:05,712 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 13:50:05,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:50:05,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033699957] [2024-12-02 13:50:05,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033699957] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:50:05,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297768827] [2024-12-02 13:50:05,713 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:50:05,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:50:05,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03333f4-9b8c-4f64-990b-53f3abe4ef4f/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:50:05,714 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03333f4-9b8c-4f64-990b-53f3abe4ef4f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:50:05,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03333f4-9b8c-4f64-990b-53f3abe4ef4f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 13:50:06,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:50:06,078 INFO L256 TraceCheckSpWp]: Trace formula consists of 1468 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 13:50:06,084 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:50:06,119 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-02 13:50:06,119 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 13:50:06,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [297768827] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:50:06,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 13:50:06,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-12-02 13:50:06,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248535514] [2024-12-02 13:50:06,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:50:06,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:50:06,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:50:06,120 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:50:06,120 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 13:50:06,121 INFO L87 Difference]: Start difference. First operand 992 states and 1639 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2024-12-02 13:50:06,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:50:06,210 INFO L93 Difference]: Finished difference Result 2879 states and 4832 transitions. [2024-12-02 13:50:06,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:50:06,211 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 118 [2024-12-02 13:50:06,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:50:06,221 INFO L225 Difference]: With dead ends: 2879 [2024-12-02 13:50:06,221 INFO L226 Difference]: Without dead ends: 1932 [2024-12-02 13:50:06,225 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 118 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 13:50:06,225 INFO L435 NwaCegarLoop]: 921 mSDtfsCounter, 832 mSDsluCounter, 789 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 832 SdHoareTripleChecker+Valid, 1710 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:50:06,226 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [832 Valid, 1710 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:50:06,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1932 states. [2024-12-02 13:50:06,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1932 to 1929. [2024-12-02 13:50:06,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1929 states, 1503 states have (on average 1.6719893546240852) internal successors, (2513), 1564 states have internal predecessors, (2513), 342 states have call successors, (342), 81 states have call predecessors, (342), 83 states have return successors, (379), 335 states have call predecessors, (379), 337 states have call successors, (379) [2024-12-02 13:50:06,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1929 states to 1929 states and 3234 transitions. [2024-12-02 13:50:06,295 INFO L78 Accepts]: Start accepts. Automaton has 1929 states and 3234 transitions. Word has length 118 [2024-12-02 13:50:06,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:50:06,296 INFO L471 AbstractCegarLoop]: Abstraction has 1929 states and 3234 transitions. [2024-12-02 13:50:06,296 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2024-12-02 13:50:06,296 INFO L276 IsEmpty]: Start isEmpty. Operand 1929 states and 3234 transitions. [2024-12-02 13:50:06,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-12-02 13:50:06,299 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:50:06,299 INFO L218 NwaCegarLoop]: trace histogram [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 13:50:06,309 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03333f4-9b8c-4f64-990b-53f3abe4ef4f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 13:50:06,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03333f4-9b8c-4f64-990b-53f3abe4ef4f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-12-02 13:50:06,500 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:50:06,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:50:06,500 INFO L85 PathProgramCache]: Analyzing trace with hash -409247270, now seen corresponding path program 1 times [2024-12-02 13:50:06,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:50:06,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267783243] [2024-12-02 13:50:06,500 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:50:06,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:50:06,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:50:06,615 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 13:50:06,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:50:06,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267783243] [2024-12-02 13:50:06,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267783243] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:50:06,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1596445002] [2024-12-02 13:50:06,616 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:50:06,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:50:06,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03333f4-9b8c-4f64-990b-53f3abe4ef4f/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:50:06,618 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03333f4-9b8c-4f64-990b-53f3abe4ef4f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:50:06,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03333f4-9b8c-4f64-990b-53f3abe4ef4f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 13:50:06,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:50:06,960 INFO L256 TraceCheckSpWp]: Trace formula consists of 1470 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 13:50:06,965 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:50:07,000 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-02 13:50:07,000 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 13:50:07,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1596445002] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:50:07,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 13:50:07,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-12-02 13:50:07,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891208316] [2024-12-02 13:50:07,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:50:07,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:50:07,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:50:07,002 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:50:07,002 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 13:50:07,002 INFO L87 Difference]: Start difference. First operand 1929 states and 3234 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2024-12-02 13:50:07,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:50:07,134 INFO L93 Difference]: Finished difference Result 5692 states and 9668 transitions. [2024-12-02 13:50:07,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:50:07,134 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 119 [2024-12-02 13:50:07,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:50:07,182 INFO L225 Difference]: With dead ends: 5692 [2024-12-02 13:50:07,182 INFO L226 Difference]: Without dead ends: 3808 [2024-12-02 13:50:07,191 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 119 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 13:50:07,191 INFO L435 NwaCegarLoop]: 911 mSDtfsCounter, 831 mSDsluCounter, 792 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 831 SdHoareTripleChecker+Valid, 1703 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:50:07,192 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [831 Valid, 1703 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:50:07,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3808 states. [2024-12-02 13:50:07,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3808 to 3804. [2024-12-02 13:50:07,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3804 states, 2966 states have (on average 1.677343223196224) internal successors, (4975), 3083 states have internal predecessors, (4975), 674 states have call successors, (674), 157 states have call predecessors, (674), 163 states have return successors, (811), 667 states have call predecessors, (811), 669 states have call successors, (811) [2024-12-02 13:50:07,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3804 states to 3804 states and 6460 transitions. [2024-12-02 13:50:07,389 INFO L78 Accepts]: Start accepts. Automaton has 3804 states and 6460 transitions. Word has length 119 [2024-12-02 13:50:07,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:50:07,389 INFO L471 AbstractCegarLoop]: Abstraction has 3804 states and 6460 transitions. [2024-12-02 13:50:07,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2024-12-02 13:50:07,389 INFO L276 IsEmpty]: Start isEmpty. Operand 3804 states and 6460 transitions. [2024-12-02 13:50:07,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-12-02 13:50:07,393 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:50:07,393 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:50:07,404 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03333f4-9b8c-4f64-990b-53f3abe4ef4f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 13:50:07,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03333f4-9b8c-4f64-990b-53f3abe4ef4f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-12-02 13:50:07,594 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:50:07,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:50:07,594 INFO L85 PathProgramCache]: Analyzing trace with hash 198113408, now seen corresponding path program 1 times [2024-12-02 13:50:07,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:50:07,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049938334] [2024-12-02 13:50:07,594 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:50:07,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:50:07,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:50:07,725 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 13:50:07,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:50:07,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049938334] [2024-12-02 13:50:07,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049938334] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:50:07,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995171553] [2024-12-02 13:50:07,726 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:50:07,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:50:07,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03333f4-9b8c-4f64-990b-53f3abe4ef4f/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:50:07,728 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03333f4-9b8c-4f64-990b-53f3abe4ef4f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:50:07,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03333f4-9b8c-4f64-990b-53f3abe4ef4f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 13:50:08,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:50:08,038 INFO L256 TraceCheckSpWp]: Trace formula consists of 1472 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 13:50:08,043 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:50:08,074 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-02 13:50:08,075 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 13:50:08,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [995171553] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:50:08,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 13:50:08,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-12-02 13:50:08,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856404304] [2024-12-02 13:50:08,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:50:08,075 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:50:08,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:50:08,076 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:50:08,076 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 13:50:08,076 INFO L87 Difference]: Start difference. First operand 3804 states and 6460 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2024-12-02 13:50:08,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:50:08,310 INFO L93 Difference]: Finished difference Result 11319 states and 19517 transitions. [2024-12-02 13:50:08,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:50:08,310 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 120 [2024-12-02 13:50:08,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:50:08,346 INFO L225 Difference]: With dead ends: 11319 [2024-12-02 13:50:08,347 INFO L226 Difference]: Without dead ends: 7560 [2024-12-02 13:50:08,358 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 120 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 13:50:08,358 INFO L435 NwaCegarLoop]: 940 mSDtfsCounter, 829 mSDsluCounter, 795 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 829 SdHoareTripleChecker+Valid, 1735 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:50:08,358 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [829 Valid, 1735 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:50:08,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7560 states. [2024-12-02 13:50:08,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7560 to 7555. [2024-12-02 13:50:08,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7555 states, 5893 states have (on average 1.6794501951467844) internal successors, (9897), 6122 states have internal predecessors, (9897), 1338 states have call successors, (1338), 309 states have call predecessors, (1338), 323 states have return successors, (1795), 1331 states have call predecessors, (1795), 1333 states have call successors, (1795) [2024-12-02 13:50:08,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7555 states to 7555 states and 13030 transitions. [2024-12-02 13:50:08,646 INFO L78 Accepts]: Start accepts. Automaton has 7555 states and 13030 transitions. Word has length 120 [2024-12-02 13:50:08,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:50:08,646 INFO L471 AbstractCegarLoop]: Abstraction has 7555 states and 13030 transitions. [2024-12-02 13:50:08,647 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2024-12-02 13:50:08,647 INFO L276 IsEmpty]: Start isEmpty. Operand 7555 states and 13030 transitions. [2024-12-02 13:50:08,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-12-02 13:50:08,649 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:50:08,649 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:50:08,660 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03333f4-9b8c-4f64-990b-53f3abe4ef4f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 13:50:08,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03333f4-9b8c-4f64-990b-53f3abe4ef4f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-12-02 13:50:08,850 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:50:08,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:50:08,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1846429148, now seen corresponding path program 1 times [2024-12-02 13:50:08,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:50:08,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322673116] [2024-12-02 13:50:08,850 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:50:08,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:50:08,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:50:08,984 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 13:50:08,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:50:08,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322673116] [2024-12-02 13:50:08,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322673116] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:50:08,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140395752] [2024-12-02 13:50:08,984 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:50:08,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:50:08,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03333f4-9b8c-4f64-990b-53f3abe4ef4f/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:50:08,987 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03333f4-9b8c-4f64-990b-53f3abe4ef4f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:50:08,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03333f4-9b8c-4f64-990b-53f3abe4ef4f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 13:50:09,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:50:09,339 INFO L256 TraceCheckSpWp]: Trace formula consists of 1474 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 13:50:09,343 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:50:09,371 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-02 13:50:09,371 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 13:50:09,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140395752] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:50:09,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 13:50:09,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-12-02 13:50:09,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420928226] [2024-12-02 13:50:09,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:50:09,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:50:09,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:50:09,373 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:50:09,373 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 13:50:09,373 INFO L87 Difference]: Start difference. First operand 7555 states and 13030 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2024-12-02 13:50:09,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:50:09,844 INFO L93 Difference]: Finished difference Result 22574 states and 39853 transitions. [2024-12-02 13:50:09,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:50:09,845 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 121 [2024-12-02 13:50:09,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:50:10,006 INFO L225 Difference]: With dead ends: 22574 [2024-12-02 13:50:10,007 INFO L226 Difference]: Without dead ends: 15056 [2024-12-02 13:50:10,038 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 121 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 13:50:10,039 INFO L435 NwaCegarLoop]: 958 mSDtfsCounter, 827 mSDsluCounter, 799 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 827 SdHoareTripleChecker+Valid, 1757 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:50:10,039 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [827 Valid, 1757 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:50:10,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15056 states. [2024-12-02 13:50:10,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15056 to 15050. [2024-12-02 13:50:10,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15050 states, 11741 states have (on average 1.6796695341112342) internal successors, (19721), 12194 states have internal predecessors, (19721), 2666 states have call successors, (2666), 613 states have call predecessors, (2666), 642 states have return successors, (4194), 2658 states have call predecessors, (4194), 2661 states have call successors, (4194) [2024-12-02 13:50:10,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15050 states to 15050 states and 26581 transitions. [2024-12-02 13:50:10,903 INFO L78 Accepts]: Start accepts. Automaton has 15050 states and 26581 transitions. Word has length 121 [2024-12-02 13:50:10,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:50:10,903 INFO L471 AbstractCegarLoop]: Abstraction has 15050 states and 26581 transitions. [2024-12-02 13:50:10,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2024-12-02 13:50:10,904 INFO L276 IsEmpty]: Start isEmpty. Operand 15050 states and 26581 transitions. [2024-12-02 13:50:10,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2024-12-02 13:50:10,926 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:50:10,927 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:50:10,937 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03333f4-9b8c-4f64-990b-53f3abe4ef4f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 13:50:11,127 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03333f4-9b8c-4f64-990b-53f3abe4ef4f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:50:11,127 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:50:11,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:50:11,128 INFO L85 PathProgramCache]: Analyzing trace with hash -815684169, now seen corresponding path program 1 times [2024-12-02 13:50:11,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:50:11,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505896093] [2024-12-02 13:50:11,128 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:50:11,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:50:11,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:50:11,252 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-12-02 13:50:11,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:50:11,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505896093] [2024-12-02 13:50:11,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505896093] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:50:11,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:50:11,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 13:50:11,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824289254] [2024-12-02 13:50:11,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:50:11,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 13:50:11,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:50:11,254 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 13:50:11,254 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 13:50:11,254 INFO L87 Difference]: Start difference. First operand 15050 states and 26581 transitions. Second operand has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 4 states have call predecessors, (23), 3 states have call successors, (23) [2024-12-02 13:50:12,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:50:12,191 INFO L93 Difference]: Finished difference Result 30183 states and 54936 transitions. [2024-12-02 13:50:12,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 13:50:12,191 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 4 states have call predecessors, (23), 3 states have call successors, (23) Word has length 189 [2024-12-02 13:50:12,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:50:12,307 INFO L225 Difference]: With dead ends: 30183 [2024-12-02 13:50:12,307 INFO L226 Difference]: Without dead ends: 15178 [2024-12-02 13:50:12,377 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-12-02 13:50:12,378 INFO L435 NwaCegarLoop]: 830 mSDtfsCounter, 842 mSDsluCounter, 2277 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 846 SdHoareTripleChecker+Valid, 3107 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 13:50:12,378 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [846 Valid, 3107 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 13:50:12,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15178 states. [2024-12-02 13:50:12,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15178 to 15178. [2024-12-02 13:50:12,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15178 states, 11837 states have (on average 1.6741573033707866) internal successors, (19817), 12290 states have internal predecessors, (19817), 2666 states have call successors, (2666), 645 states have call predecessors, (2666), 674 states have return successors, (4226), 2658 states have call predecessors, (4226), 2661 states have call successors, (4226) [2024-12-02 13:50:13,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15178 states to 15178 states and 26709 transitions. [2024-12-02 13:50:13,087 INFO L78 Accepts]: Start accepts. Automaton has 15178 states and 26709 transitions. Word has length 189 [2024-12-02 13:50:13,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:50:13,087 INFO L471 AbstractCegarLoop]: Abstraction has 15178 states and 26709 transitions. [2024-12-02 13:50:13,087 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 4 states have call predecessors, (23), 3 states have call successors, (23) [2024-12-02 13:50:13,087 INFO L276 IsEmpty]: Start isEmpty. Operand 15178 states and 26709 transitions. [2024-12-02 13:50:13,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2024-12-02 13:50:13,104 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:50:13,105 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:50:13,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-12-02 13:50:13,105 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:50:13,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:50:13,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1030109366, now seen corresponding path program 1 times [2024-12-02 13:50:13,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:50:13,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269187624] [2024-12-02 13:50:13,106 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:50:13,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:50:13,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:50:13,273 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-12-02 13:50:13,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:50:13,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269187624] [2024-12-02 13:50:13,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269187624] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:50:13,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:50:13,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 13:50:13,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700912014] [2024-12-02 13:50:13,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:50:13,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 13:50:13,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:50:13,275 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 13:50:13,275 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 13:50:13,275 INFO L87 Difference]: Start difference. First operand 15178 states and 26709 transitions. Second operand has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 4 states have call predecessors, (23), 3 states have call successors, (23) [2024-12-02 13:50:14,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:50:14,342 INFO L93 Difference]: Finished difference Result 30471 states and 55160 transitions. [2024-12-02 13:50:14,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 13:50:14,342 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 4 states have call predecessors, (23), 3 states have call successors, (23) Word has length 190 [2024-12-02 13:50:14,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:50:14,445 INFO L225 Difference]: With dead ends: 30471 [2024-12-02 13:50:14,445 INFO L226 Difference]: Without dead ends: 15338 [2024-12-02 13:50:14,524 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-12-02 13:50:14,525 INFO L435 NwaCegarLoop]: 832 mSDtfsCounter, 841 mSDsluCounter, 2281 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 844 SdHoareTripleChecker+Valid, 3113 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 13:50:14,525 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [844 Valid, 3113 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 13:50:14,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15338 states. [2024-12-02 13:50:15,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15338 to 15338. [2024-12-02 13:50:15,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15338 states, 11965 states have (on average 1.6669452569995822) internal successors, (19945), 12418 states have internal predecessors, (19945), 2666 states have call successors, (2666), 677 states have call predecessors, (2666), 706 states have return successors, (4258), 2658 states have call predecessors, (4258), 2661 states have call successors, (4258) [2024-12-02 13:50:15,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15338 states to 15338 states and 26869 transitions. [2024-12-02 13:50:15,118 INFO L78 Accepts]: Start accepts. Automaton has 15338 states and 26869 transitions. Word has length 190 [2024-12-02 13:50:15,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:50:15,118 INFO L471 AbstractCegarLoop]: Abstraction has 15338 states and 26869 transitions. [2024-12-02 13:50:15,118 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 4 states have call predecessors, (23), 3 states have call successors, (23) [2024-12-02 13:50:15,119 INFO L276 IsEmpty]: Start isEmpty. Operand 15338 states and 26869 transitions. [2024-12-02 13:50:15,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2024-12-02 13:50:15,133 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:50:15,134 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:50:15,134 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-12-02 13:50:15,134 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:50:15,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:50:15,134 INFO L85 PathProgramCache]: Analyzing trace with hash -168214893, now seen corresponding path program 1 times [2024-12-02 13:50:15,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:50:15,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939343330] [2024-12-02 13:50:15,134 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:50:15,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:50:15,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:50:15,293 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-12-02 13:50:15,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:50:15,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939343330] [2024-12-02 13:50:15,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939343330] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:50:15,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:50:15,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 13:50:15,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788729558] [2024-12-02 13:50:15,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:50:15,294 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 13:50:15,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:50:15,295 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 13:50:15,295 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 13:50:15,295 INFO L87 Difference]: Start difference. First operand 15338 states and 26869 transitions. Second operand has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 4 states have call predecessors, (23), 3 states have call successors, (23) [2024-12-02 13:50:16,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:50:16,226 INFO L93 Difference]: Finished difference Result 30823 states and 55448 transitions. [2024-12-02 13:50:16,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 13:50:16,228 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 4 states have call predecessors, (23), 3 states have call successors, (23) Word has length 191 [2024-12-02 13:50:16,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:50:16,348 INFO L225 Difference]: With dead ends: 30823 [2024-12-02 13:50:16,348 INFO L226 Difference]: Without dead ends: 15530 [2024-12-02 13:50:16,422 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-12-02 13:50:16,424 INFO L435 NwaCegarLoop]: 832 mSDtfsCounter, 841 mSDsluCounter, 2281 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 844 SdHoareTripleChecker+Valid, 3113 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 13:50:16,424 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [844 Valid, 3113 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 13:50:16,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15530 states. [2024-12-02 13:50:16,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15530 to 15530. [2024-12-02 13:50:16,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15530 states, 12125 states have (on average 1.6581443298969072) internal successors, (20105), 12578 states have internal predecessors, (20105), 2666 states have call successors, (2666), 709 states have call predecessors, (2666), 738 states have return successors, (4290), 2658 states have call predecessors, (4290), 2661 states have call successors, (4290) [2024-12-02 13:50:17,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15530 states to 15530 states and 27061 transitions. [2024-12-02 13:50:17,040 INFO L78 Accepts]: Start accepts. Automaton has 15530 states and 27061 transitions. Word has length 191 [2024-12-02 13:50:17,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:50:17,041 INFO L471 AbstractCegarLoop]: Abstraction has 15530 states and 27061 transitions. [2024-12-02 13:50:17,041 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 4 states have call predecessors, (23), 3 states have call successors, (23) [2024-12-02 13:50:17,041 INFO L276 IsEmpty]: Start isEmpty. Operand 15530 states and 27061 transitions. [2024-12-02 13:50:17,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2024-12-02 13:50:17,054 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:50:17,054 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:50:17,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-12-02 13:50:17,054 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:50:17,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:50:17,054 INFO L85 PathProgramCache]: Analyzing trace with hash -300149018, now seen corresponding path program 1 times [2024-12-02 13:50:17,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:50:17,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538950191] [2024-12-02 13:50:17,055 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:50:17,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:50:17,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:50:17,216 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-12-02 13:50:17,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:50:17,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538950191] [2024-12-02 13:50:17,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538950191] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:50:17,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:50:17,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 13:50:17,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077507296] [2024-12-02 13:50:17,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:50:17,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 13:50:17,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:50:17,217 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 13:50:17,217 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 13:50:17,217 INFO L87 Difference]: Start difference. First operand 15530 states and 27061 transitions. Second operand has 6 states, 6 states have (on average 20.0) internal successors, (120), 6 states have internal predecessors, (120), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 4 states have call predecessors, (23), 3 states have call successors, (23) [2024-12-02 13:50:18,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:50:18,072 INFO L93 Difference]: Finished difference Result 31239 states and 55800 transitions. [2024-12-02 13:50:18,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 13:50:18,073 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.0) internal successors, (120), 6 states have internal predecessors, (120), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 4 states have call predecessors, (23), 3 states have call successors, (23) Word has length 192 [2024-12-02 13:50:18,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:50:18,140 INFO L225 Difference]: With dead ends: 31239 [2024-12-02 13:50:18,140 INFO L226 Difference]: Without dead ends: 15754 [2024-12-02 13:50:18,199 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-12-02 13:50:18,200 INFO L435 NwaCegarLoop]: 832 mSDtfsCounter, 841 mSDsluCounter, 2281 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 844 SdHoareTripleChecker+Valid, 3113 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 13:50:18,200 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [844 Valid, 3113 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 13:50:18,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15754 states. [2024-12-02 13:50:18,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15754 to 15754. [2024-12-02 13:50:18,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15754 states, 12317 states have (on average 1.6478850369408136) internal successors, (20297), 12770 states have internal predecessors, (20297), 2666 states have call successors, (2666), 741 states have call predecessors, (2666), 770 states have return successors, (4322), 2658 states have call predecessors, (4322), 2661 states have call successors, (4322) [2024-12-02 13:50:18,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15754 states to 15754 states and 27285 transitions. [2024-12-02 13:50:18,899 INFO L78 Accepts]: Start accepts. Automaton has 15754 states and 27285 transitions. Word has length 192 [2024-12-02 13:50:18,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:50:18,899 INFO L471 AbstractCegarLoop]: Abstraction has 15754 states and 27285 transitions. [2024-12-02 13:50:18,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.0) internal successors, (120), 6 states have internal predecessors, (120), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 4 states have call predecessors, (23), 3 states have call successors, (23) [2024-12-02 13:50:18,899 INFO L276 IsEmpty]: Start isEmpty. Operand 15754 states and 27285 transitions. [2024-12-02 13:50:18,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2024-12-02 13:50:18,913 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:50:18,913 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:50:18,913 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-12-02 13:50:18,914 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:50:18,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:50:18,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1175998609, now seen corresponding path program 1 times [2024-12-02 13:50:18,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:50:18,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910879854] [2024-12-02 13:50:18,914 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:50:18,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:50:18,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:50:19,280 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-12-02 13:50:19,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:50:19,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910879854] [2024-12-02 13:50:19,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910879854] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:50:19,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:50:19,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-12-02 13:50:19,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683617430] [2024-12-02 13:50:19,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:50:19,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 13:50:19,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:50:19,282 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 13:50:19,282 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-12-02 13:50:19,282 INFO L87 Difference]: Start difference. First operand 15754 states and 27285 transitions. Second operand has 10 states, 10 states have (on average 12.1) internal successors, (121), 8 states have internal predecessors, (121), 5 states have call successors, (24), 3 states have call predecessors, (24), 5 states have return successors, (23), 7 states have call predecessors, (23), 4 states have call successors, (23) [2024-12-02 13:50:25,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:50:25,547 INFO L93 Difference]: Finished difference Result 70182 states and 133698 transitions. [2024-12-02 13:50:25,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-12-02 13:50:25,548 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.1) internal successors, (121), 8 states have internal predecessors, (121), 5 states have call successors, (24), 3 states have call predecessors, (24), 5 states have return successors, (23), 7 states have call predecessors, (23), 4 states have call successors, (23) Word has length 193 [2024-12-02 13:50:25,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:50:25,872 INFO L225 Difference]: With dead ends: 70182 [2024-12-02 13:50:25,872 INFO L226 Difference]: Without dead ends: 54473 [2024-12-02 13:50:25,997 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=119, Invalid=637, Unknown=0, NotChecked=0, Total=756 [2024-12-02 13:50:25,997 INFO L435 NwaCegarLoop]: 869 mSDtfsCounter, 2592 mSDsluCounter, 4350 mSDsCounter, 0 mSdLazyCounter, 10403 mSolverCounterSat, 617 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2703 SdHoareTripleChecker+Valid, 5219 SdHoareTripleChecker+Invalid, 11020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 617 IncrementalHoareTripleChecker+Valid, 10403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-12-02 13:50:25,998 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2703 Valid, 5219 Invalid, 11020 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [617 Valid, 10403 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2024-12-02 13:50:26,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54473 states. [2024-12-02 13:50:28,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54473 to 53168. [2024-12-02 13:50:28,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53168 states, 40448 states have (on average 1.6306121439873418) internal successors, (65955), 42181 states have internal predecessors, (65955), 10124 states have call successors, (10124), 2214 states have call predecessors, (10124), 2595 states have return successors, (23234), 10340 states have call predecessors, (23234), 10119 states have call successors, (23234) [2024-12-02 13:50:28,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53168 states to 53168 states and 99313 transitions. [2024-12-02 13:50:28,617 INFO L78 Accepts]: Start accepts. Automaton has 53168 states and 99313 transitions. Word has length 193 [2024-12-02 13:50:28,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:50:28,617 INFO L471 AbstractCegarLoop]: Abstraction has 53168 states and 99313 transitions. [2024-12-02 13:50:28,617 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.1) internal successors, (121), 8 states have internal predecessors, (121), 5 states have call successors, (24), 3 states have call predecessors, (24), 5 states have return successors, (23), 7 states have call predecessors, (23), 4 states have call successors, (23) [2024-12-02 13:50:28,617 INFO L276 IsEmpty]: Start isEmpty. Operand 53168 states and 99313 transitions. [2024-12-02 13:50:28,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-12-02 13:50:28,671 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:50:28,671 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:50:28,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-12-02 13:50:28,671 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:50:28,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:50:28,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1200763892, now seen corresponding path program 1 times [2024-12-02 13:50:28,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:50:28,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526088004] [2024-12-02 13:50:28,672 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:50:28,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:50:28,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:50:28,819 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-12-02 13:50:28,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:50:28,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526088004] [2024-12-02 13:50:28,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526088004] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:50:28,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:50:28,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 13:50:28,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661948666] [2024-12-02 13:50:28,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:50:28,820 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 13:50:28,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:50:28,821 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 13:50:28,821 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 13:50:28,821 INFO L87 Difference]: Start difference. First operand 53168 states and 99313 transitions. Second operand has 8 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 3 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2024-12-02 13:50:29,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:50:29,811 INFO L93 Difference]: Finished difference Result 68725 states and 126268 transitions. [2024-12-02 13:50:29,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 13:50:29,812 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 3 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 196 [2024-12-02 13:50:29,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:50:29,906 INFO L225 Difference]: With dead ends: 68725 [2024-12-02 13:50:29,906 INFO L226 Difference]: Without dead ends: 15591 [2024-12-02 13:50:30,087 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-12-02 13:50:30,088 INFO L435 NwaCegarLoop]: 828 mSDtfsCounter, 8 mSDsluCounter, 4945 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 5773 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:50:30,088 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 5773 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:50:30,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15591 states. [2024-12-02 13:50:30,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15591 to 15591. [2024-12-02 13:50:30,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15591 states, 12218 states have (on average 1.647569160255361) internal successors, (20130), 12671 states have internal predecessors, (20130), 2602 states have call successors, (2602), 741 states have call predecessors, (2602), 770 states have return successors, (4258), 2594 states have call predecessors, (4258), 2597 states have call successors, (4258) [2024-12-02 13:50:30,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15591 states to 15591 states and 26990 transitions. [2024-12-02 13:50:30,696 INFO L78 Accepts]: Start accepts. Automaton has 15591 states and 26990 transitions. Word has length 196 [2024-12-02 13:50:30,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:50:30,697 INFO L471 AbstractCegarLoop]: Abstraction has 15591 states and 26990 transitions. [2024-12-02 13:50:30,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 3 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2024-12-02 13:50:30,697 INFO L276 IsEmpty]: Start isEmpty. Operand 15591 states and 26990 transitions. [2024-12-02 13:50:30,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2024-12-02 13:50:30,704 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:50:30,704 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:50:30,704 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-12-02 13:50:30,704 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:50:30,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:50:30,704 INFO L85 PathProgramCache]: Analyzing trace with hash 669111720, now seen corresponding path program 1 times [2024-12-02 13:50:30,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:50:30,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655191149] [2024-12-02 13:50:30,705 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:50:30,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:50:30,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:50:30,962 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-12-02 13:50:30,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:50:30,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655191149] [2024-12-02 13:50:30,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655191149] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:50:30,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:50:30,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 13:50:30,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81153207] [2024-12-02 13:50:30,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:50:30,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 13:50:30,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:50:30,963 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 13:50:30,963 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-02 13:50:30,964 INFO L87 Difference]: Start difference. First operand 15591 states and 26990 transitions. Second operand has 9 states, 9 states have (on average 14.0) internal successors, (126), 8 states have internal predecessors, (126), 5 states have call successors, (25), 3 states have call predecessors, (25), 5 states have return successors, (24), 6 states have call predecessors, (24), 4 states have call successors, (24) [2024-12-02 13:50:32,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:50:32,786 INFO L93 Difference]: Finished difference Result 31268 states and 55281 transitions. [2024-12-02 13:50:32,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 13:50:32,786 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.0) internal successors, (126), 8 states have internal predecessors, (126), 5 states have call successors, (25), 3 states have call predecessors, (25), 5 states have return successors, (24), 6 states have call predecessors, (24), 4 states have call successors, (24) Word has length 199 [2024-12-02 13:50:32,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:50:32,891 INFO L225 Difference]: With dead ends: 31268 [2024-12-02 13:50:32,891 INFO L226 Difference]: Without dead ends: 15719 [2024-12-02 13:50:32,946 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-12-02 13:50:32,946 INFO L435 NwaCegarLoop]: 346 mSDtfsCounter, 1274 mSDsluCounter, 1379 mSDsCounter, 0 mSdLazyCounter, 3309 mSolverCounterSat, 343 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1274 SdHoareTripleChecker+Valid, 1725 SdHoareTripleChecker+Invalid, 3652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 343 IncrementalHoareTripleChecker+Valid, 3309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-12-02 13:50:32,947 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1274 Valid, 1725 Invalid, 3652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [343 Valid, 3309 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-12-02 13:50:32,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15719 states. [2024-12-02 13:50:33,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15719 to 15719. [2024-12-02 13:50:33,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15719 states, 12314 states have (on average 1.6425207081370798) internal successors, (20226), 12767 states have internal predecessors, (20226), 2602 states have call successors, (2602), 741 states have call predecessors, (2602), 802 states have return successors, (4418), 2626 states have call predecessors, (4418), 2597 states have call successors, (4418) [2024-12-02 13:50:33,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15719 states to 15719 states and 27246 transitions. [2024-12-02 13:50:33,532 INFO L78 Accepts]: Start accepts. Automaton has 15719 states and 27246 transitions. Word has length 199 [2024-12-02 13:50:33,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:50:33,532 INFO L471 AbstractCegarLoop]: Abstraction has 15719 states and 27246 transitions. [2024-12-02 13:50:33,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.0) internal successors, (126), 8 states have internal predecessors, (126), 5 states have call successors, (25), 3 states have call predecessors, (25), 5 states have return successors, (24), 6 states have call predecessors, (24), 4 states have call successors, (24) [2024-12-02 13:50:33,532 INFO L276 IsEmpty]: Start isEmpty. Operand 15719 states and 27246 transitions. [2024-12-02 13:50:33,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2024-12-02 13:50:33,542 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:50:33,543 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:50:33,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-12-02 13:50:33,543 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:50:33,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:50:33,543 INFO L85 PathProgramCache]: Analyzing trace with hash -694517709, now seen corresponding path program 1 times [2024-12-02 13:50:33,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:50:33,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061897573] [2024-12-02 13:50:33,543 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:50:33,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:50:33,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:50:33,684 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-12-02 13:50:33,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:50:33,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061897573] [2024-12-02 13:50:33,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061897573] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:50:33,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:50:33,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 13:50:33,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144520272] [2024-12-02 13:50:33,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:50:33,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 13:50:33,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:50:33,685 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 13:50:33,685 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 13:50:33,685 INFO L87 Difference]: Start difference. First operand 15719 states and 27246 transitions. Second operand has 8 states, 8 states have (on average 16.0) internal successors, (128), 8 states have internal predecessors, (128), 5 states have call successors, (25), 3 states have call predecessors, (25), 4 states have return successors, (24), 6 states have call predecessors, (24), 4 states have call successors, (24) [2024-12-02 13:50:38,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:50:38,523 INFO L93 Difference]: Finished difference Result 61823 states and 111547 transitions. [2024-12-02 13:50:38,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-12-02 13:50:38,524 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.0) internal successors, (128), 8 states have internal predecessors, (128), 5 states have call successors, (25), 3 states have call predecessors, (25), 4 states have return successors, (24), 6 states have call predecessors, (24), 4 states have call successors, (24) Word has length 200 [2024-12-02 13:50:38,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:50:38,825 INFO L225 Difference]: With dead ends: 61823 [2024-12-02 13:50:38,825 INFO L226 Difference]: Without dead ends: 46146 [2024-12-02 13:50:38,948 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2024-12-02 13:50:38,948 INFO L435 NwaCegarLoop]: 491 mSDtfsCounter, 3414 mSDsluCounter, 1710 mSDsCounter, 0 mSdLazyCounter, 4989 mSolverCounterSat, 911 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3486 SdHoareTripleChecker+Valid, 2201 SdHoareTripleChecker+Invalid, 5900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 911 IncrementalHoareTripleChecker+Valid, 4989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-12-02 13:50:38,948 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3486 Valid, 2201 Invalid, 5900 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [911 Valid, 4989 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-12-02 13:50:38,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46146 states. [2024-12-02 13:50:40,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46146 to 45742. [2024-12-02 13:50:40,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45742 states, 35748 states have (on average 1.6124538435716684) internal successors, (57642), 37096 states have internal predecessors, (57642), 7592 states have call successors, (7592), 2309 states have call predecessors, (7592), 2401 states have return successors, (15136), 7489 states have call predecessors, (15136), 7587 states have call successors, (15136) [2024-12-02 13:50:40,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45742 states to 45742 states and 80370 transitions. [2024-12-02 13:50:40,967 INFO L78 Accepts]: Start accepts. Automaton has 45742 states and 80370 transitions. Word has length 200 [2024-12-02 13:50:40,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:50:40,967 INFO L471 AbstractCegarLoop]: Abstraction has 45742 states and 80370 transitions. [2024-12-02 13:50:40,967 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.0) internal successors, (128), 8 states have internal predecessors, (128), 5 states have call successors, (25), 3 states have call predecessors, (25), 4 states have return successors, (24), 6 states have call predecessors, (24), 4 states have call successors, (24) [2024-12-02 13:50:40,967 INFO L276 IsEmpty]: Start isEmpty. Operand 45742 states and 80370 transitions. [2024-12-02 13:50:40,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2024-12-02 13:50:40,976 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:50:40,977 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:50:40,977 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-12-02 13:50:40,977 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:50:40,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:50:40,977 INFO L85 PathProgramCache]: Analyzing trace with hash -635448361, now seen corresponding path program 1 times [2024-12-02 13:50:40,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:50:40,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57216960] [2024-12-02 13:50:40,978 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:50:40,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:50:41,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:50:41,190 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2024-12-02 13:50:41,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:50:41,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57216960] [2024-12-02 13:50:41,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57216960] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:50:41,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:50:41,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 13:50:41,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677853676] [2024-12-02 13:50:41,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:50:41,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 13:50:41,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:50:41,191 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 13:50:41,191 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 13:50:41,191 INFO L87 Difference]: Start difference. First operand 45742 states and 80370 transitions. Second operand has 8 states, 8 states have (on average 16.0) internal successors, (128), 8 states have internal predecessors, (128), 5 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (24), 5 states have call predecessors, (24), 4 states have call successors, (24) [2024-12-02 13:50:50,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:50:50,001 INFO L93 Difference]: Finished difference Result 165043 states and 341718 transitions. [2024-12-02 13:50:50,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 13:50:50,002 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.0) internal successors, (128), 8 states have internal predecessors, (128), 5 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (24), 5 states have call predecessors, (24), 4 states have call successors, (24) Word has length 202 [2024-12-02 13:50:50,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:50:50,802 INFO L225 Difference]: With dead ends: 165043 [2024-12-02 13:50:50,802 INFO L226 Difference]: Without dead ends: 119343 [2024-12-02 13:50:51,087 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2024-12-02 13:50:51,088 INFO L435 NwaCegarLoop]: 817 mSDtfsCounter, 3245 mSDsluCounter, 2390 mSDsCounter, 0 mSdLazyCounter, 6193 mSolverCounterSat, 938 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3279 SdHoareTripleChecker+Valid, 3207 SdHoareTripleChecker+Invalid, 7131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 938 IncrementalHoareTripleChecker+Valid, 6193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-12-02 13:50:51,088 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3279 Valid, 3207 Invalid, 7131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [938 Valid, 6193 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-12-02 13:50:51,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119343 states. [2024-12-02 13:50:57,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119343 to 106932. [2024-12-02 13:50:57,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106932 states, 80077 states have (on average 1.5928418896811818) internal successors, (127550), 84497 states have internal predecessors, (127550), 21702 states have call successors, (21702), 4613 states have call predecessors, (21702), 5152 states have return successors, (52141), 21663 states have call predecessors, (52141), 21697 states have call successors, (52141) [2024-12-02 13:50:58,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106932 states to 106932 states and 201393 transitions. [2024-12-02 13:50:58,638 INFO L78 Accepts]: Start accepts. Automaton has 106932 states and 201393 transitions. Word has length 202 [2024-12-02 13:50:58,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:50:58,638 INFO L471 AbstractCegarLoop]: Abstraction has 106932 states and 201393 transitions. [2024-12-02 13:50:58,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.0) internal successors, (128), 8 states have internal predecessors, (128), 5 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (24), 5 states have call predecessors, (24), 4 states have call successors, (24) [2024-12-02 13:50:58,638 INFO L276 IsEmpty]: Start isEmpty. Operand 106932 states and 201393 transitions. [2024-12-02 13:50:58,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2024-12-02 13:50:58,650 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:50:58,650 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:50:58,650 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-12-02 13:50:58,650 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:50:58,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:50:58,650 INFO L85 PathProgramCache]: Analyzing trace with hash -491038666, now seen corresponding path program 1 times [2024-12-02 13:50:58,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:50:58,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33083725] [2024-12-02 13:50:58,651 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:50:58,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:50:58,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:50:58,811 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2024-12-02 13:50:58,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:50:58,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33083725] [2024-12-02 13:50:58,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33083725] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:50:58,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:50:58,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 13:50:58,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882647802] [2024-12-02 13:50:58,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:50:58,812 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 13:50:58,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:50:58,812 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 13:50:58,812 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 13:50:58,812 INFO L87 Difference]: Start difference. First operand 106932 states and 201393 transitions. Second operand has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 5 states have internal predecessors, (128), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) [2024-12-02 13:51:05,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:51:05,380 INFO L93 Difference]: Finished difference Result 214781 states and 420341 transitions. [2024-12-02 13:51:05,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 13:51:05,380 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 5 states have internal predecessors, (128), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) Word has length 202 [2024-12-02 13:51:05,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:51:06,178 INFO L225 Difference]: With dead ends: 214781 [2024-12-02 13:51:06,178 INFO L226 Difference]: Without dead ends: 107892 [2024-12-02 13:51:06,968 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 13:51:06,969 INFO L435 NwaCegarLoop]: 829 mSDtfsCounter, 0 mSDsluCounter, 3309 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4138 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:51:06,969 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4138 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:51:07,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107892 states. [2024-12-02 13:51:12,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107892 to 107892. [2024-12-02 13:51:12,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107892 states, 80845 states have (on average 1.587210093388583) internal successors, (128318), 85265 states have internal predecessors, (128318), 21702 states have call successors, (21702), 4613 states have call predecessors, (21702), 5344 states have return successors, (52397), 21855 states have call predecessors, (52397), 21697 states have call successors, (52397) [2024-12-02 13:51:13,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107892 states to 107892 states and 202417 transitions. [2024-12-02 13:51:13,582 INFO L78 Accepts]: Start accepts. Automaton has 107892 states and 202417 transitions. Word has length 202 [2024-12-02 13:51:13,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:51:13,582 INFO L471 AbstractCegarLoop]: Abstraction has 107892 states and 202417 transitions. [2024-12-02 13:51:13,582 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 5 states have internal predecessors, (128), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) [2024-12-02 13:51:13,582 INFO L276 IsEmpty]: Start isEmpty. Operand 107892 states and 202417 transitions. [2024-12-02 13:51:13,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2024-12-02 13:51:13,594 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:51:13,594 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:51:13,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-12-02 13:51:13,595 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:51:13,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:51:13,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1394257279, now seen corresponding path program 1 times [2024-12-02 13:51:13,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:51:13,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386666082] [2024-12-02 13:51:13,595 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:51:13,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:51:13,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:51:13,738 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2024-12-02 13:51:13,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:51:13,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386666082] [2024-12-02 13:51:13,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386666082] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:51:13,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:51:13,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 13:51:13,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492308762] [2024-12-02 13:51:13,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:51:13,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 13:51:13,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:51:13,739 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 13:51:13,739 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 13:51:13,740 INFO L87 Difference]: Start difference. First operand 107892 states and 202417 transitions. Second operand has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 5 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (24), 5 states have call predecessors, (24), 4 states have call successors, (24) [2024-12-02 13:51:25,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:51:25,795 INFO L93 Difference]: Finished difference Result 292767 states and 594509 transitions. [2024-12-02 13:51:25,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 13:51:25,796 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 5 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (24), 5 states have call predecessors, (24), 4 states have call successors, (24) Word has length 203 [2024-12-02 13:51:25,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:51:27,071 INFO L225 Difference]: With dead ends: 292767 [2024-12-02 13:51:27,071 INFO L226 Difference]: Without dead ends: 184663 [2024-12-02 13:51:27,795 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-12-02 13:51:27,796 INFO L435 NwaCegarLoop]: 492 mSDtfsCounter, 2948 mSDsluCounter, 1363 mSDsCounter, 0 mSdLazyCounter, 4810 mSolverCounterSat, 748 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3028 SdHoareTripleChecker+Valid, 1855 SdHoareTripleChecker+Invalid, 5558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 748 IncrementalHoareTripleChecker+Valid, 4810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-12-02 13:51:27,796 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3028 Valid, 1855 Invalid, 5558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [748 Valid, 4810 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-12-02 13:51:27,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184663 states. [2024-12-02 13:51:36,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184663 to 183711. [2024-12-02 13:51:36,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183711 states, 138380 states have (on average 1.5651177915883798) internal successors, (216581), 145424 states have internal predecessors, (216581), 35214 states have call successors, (35214), 8968 states have call predecessors, (35214), 10116 states have return successors, (111847), 35174 states have call predecessors, (111847), 35209 states have call successors, (111847) [2024-12-02 13:51:38,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183711 states to 183711 states and 363642 transitions. [2024-12-02 13:51:38,932 INFO L78 Accepts]: Start accepts. Automaton has 183711 states and 363642 transitions. Word has length 203 [2024-12-02 13:51:38,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:51:38,932 INFO L471 AbstractCegarLoop]: Abstraction has 183711 states and 363642 transitions. [2024-12-02 13:51:38,933 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 5 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (24), 5 states have call predecessors, (24), 4 states have call successors, (24) [2024-12-02 13:51:38,933 INFO L276 IsEmpty]: Start isEmpty. Operand 183711 states and 363642 transitions. [2024-12-02 13:51:38,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2024-12-02 13:51:38,949 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:51:38,949 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:51:38,949 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-12-02 13:51:38,949 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:51:38,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:51:38,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1914431530, now seen corresponding path program 1 times [2024-12-02 13:51:38,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:51:38,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527643576] [2024-12-02 13:51:38,950 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:51:38,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:51:38,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:51:39,634 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2024-12-02 13:51:39,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:51:39,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527643576] [2024-12-02 13:51:39,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527643576] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:51:39,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497307106] [2024-12-02 13:51:39,634 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:51:39,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:51:39,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03333f4-9b8c-4f64-990b-53f3abe4ef4f/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:51:39,636 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03333f4-9b8c-4f64-990b-53f3abe4ef4f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:51:39,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03333f4-9b8c-4f64-990b-53f3abe4ef4f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 13:51:40,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:51:40,026 INFO L256 TraceCheckSpWp]: Trace formula consists of 2469 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 13:51:40,033 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:51:40,223 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2024-12-02 13:51:40,223 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:51:40,725 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2024-12-02 13:51:40,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1497307106] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:51:40,725 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:51:40,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 6] total 14 [2024-12-02 13:51:40,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909805272] [2024-12-02 13:51:40,726 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:51:40,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-12-02 13:51:40,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:51:40,728 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-12-02 13:51:40,728 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-12-02 13:51:40,728 INFO L87 Difference]: Start difference. First operand 183711 states and 363642 transitions. Second operand has 14 states, 14 states have (on average 18.357142857142858) internal successors, (257), 14 states have internal predecessors, (257), 10 states have call successors, (59), 6 states have call predecessors, (59), 7 states have return successors, (57), 11 states have call predecessors, (57), 9 states have call successors, (57)