./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec13_product29.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_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/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_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec13_product29.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/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_1d418877-d185-4315-adcc-e96f6aa3ae0c/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 63ce65fdf446745f64534f105010543d07f1d807cf17249eadefb49fdfafb832 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 11:24:49,202 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 11:24:49,265 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 11:24:49,271 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 11:24:49,271 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 11:24:49,294 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 11:24:49,295 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 11:24:49,295 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 11:24:49,295 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 11:24:49,295 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 11:24:49,296 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 11:24:49,296 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 11:24:49,296 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 11:24:49,296 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 11:24:49,296 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 11:24:49,297 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 11:24:49,297 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 11:24:49,297 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 11:24:49,297 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 11:24:49,297 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 11:24:49,297 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 11:24:49,297 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 11:24:49,297 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 11:24:49,298 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 11:24:49,298 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 11:24:49,298 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 11:24:49,298 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 11:24:49,298 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 11:24:49,298 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 11:24:49,298 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 11:24:49,298 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 11:24:49,298 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 11:24:49,299 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 11:24:49,299 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 11:24:49,299 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 11:24:49,299 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 11:24:49,299 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 11:24:49,299 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 11:24:49,299 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 11:24:49,299 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 11:24:49,300 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 11:24:49,300 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 11:24:49,300 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 11:24:49,300 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 11:24:49,300 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 11:24:49,300 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 11:24:49,300 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 11:24:49,300 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 11:24:49,300 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_1d418877-d185-4315-adcc-e96f6aa3ae0c/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 -> 63ce65fdf446745f64534f105010543d07f1d807cf17249eadefb49fdfafb832 [2024-12-02 11:24:49,543 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 11:24:49,552 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 11:24:49,554 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 11:24:49,556 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 11:24:49,556 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 11:24:49,557 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/product-lines/elevator_spec13_product29.cil.c [2024-12-02 11:24:52,410 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/data/7621c8932/b83b5615fe924dc6aa415e29640a72a3/FLAG291f9af99 [2024-12-02 11:24:52,725 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 11:24:52,726 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/sv-benchmarks/c/product-lines/elevator_spec13_product29.cil.c [2024-12-02 11:24:52,744 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/data/7621c8932/b83b5615fe924dc6aa415e29640a72a3/FLAG291f9af99 [2024-12-02 11:24:52,761 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/data/7621c8932/b83b5615fe924dc6aa415e29640a72a3 [2024-12-02 11:24:52,764 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 11:24:52,766 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 11:24:52,767 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 11:24:52,767 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 11:24:52,772 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 11:24:52,773 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:24:52" (1/1) ... [2024-12-02 11:24:52,774 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21b49929 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:24:52, skipping insertion in model container [2024-12-02 11:24:52,774 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:24:52" (1/1) ... [2024-12-02 11:24:52,819 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 11:24:53,236 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_1d418877-d185-4315-adcc-e96f6aa3ae0c/sv-benchmarks/c/product-lines/elevator_spec13_product29.cil.c[54440,54453] [2024-12-02 11:24:53,318 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 11:24:53,331 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 11:24:53,341 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [48] [2024-12-02 11:24:53,342 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [716] [2024-12-02 11:24:53,343 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [736] [2024-12-02 11:24:53,343 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [857] [2024-12-02 11:24:53,343 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification13_spec.i","") [2398] [2024-12-02 11:24:53,343 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [2488] [2024-12-02 11:24:53,343 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [2497] [2024-12-02 11:24:53,343 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [2589] [2024-12-02 11:24:53,344 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [2940] [2024-12-02 11:24:53,344 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [2975] [2024-12-02 11:24:53,422 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_1d418877-d185-4315-adcc-e96f6aa3ae0c/sv-benchmarks/c/product-lines/elevator_spec13_product29.cil.c[54440,54453] [2024-12-02 11:24:53,452 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 11:24:53,476 INFO L204 MainTranslator]: Completed translation [2024-12-02 11:24:53,477 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:24:53 WrapperNode [2024-12-02 11:24:53,477 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 11:24:53,478 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 11:24:53,478 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 11:24:53,478 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 11:24:53,482 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:24:53" (1/1) ... [2024-12-02 11:24:53,499 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:24:53" (1/1) ... [2024-12-02 11:24:53,534 INFO L138 Inliner]: procedures = 91, calls = 340, calls flagged for inlining = 28, calls inlined = 25, statements flattened = 860 [2024-12-02 11:24:53,535 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 11:24:53,535 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 11:24:53,535 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 11:24:53,535 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 11:24:53,546 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:24:53" (1/1) ... [2024-12-02 11:24:53,546 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:24:53" (1/1) ... [2024-12-02 11:24:53,552 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:24:53" (1/1) ... [2024-12-02 11:24:53,577 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. The 0 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. [2024-12-02 11:24:53,577 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:24:53" (1/1) ... [2024-12-02 11:24:53,577 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:24:53" (1/1) ... [2024-12-02 11:24:53,599 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:24:53" (1/1) ... [2024-12-02 11:24:53,603 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:24:53" (1/1) ... [2024-12-02 11:24:53,615 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:24:53" (1/1) ... [2024-12-02 11:24:53,622 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:24:53" (1/1) ... [2024-12-02 11:24:53,626 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:24:53" (1/1) ... [2024-12-02 11:24:53,636 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 11:24:53,637 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 11:24:53,637 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 11:24:53,637 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 11:24:53,638 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:24:53" (1/1) ... [2024-12-02 11:24:53,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 11:24:53,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:24:53,672 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 11:24:53,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 11:24:53,707 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2024-12-02 11:24:53,708 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2024-12-02 11:24:53,708 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 11:24:53,708 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2024-12-02 11:24:53,708 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2024-12-02 11:24:53,708 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2024-12-02 11:24:53,708 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2024-12-02 11:24:53,708 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2024-12-02 11:24:53,708 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2024-12-02 11:24:53,709 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-12-02 11:24:53,709 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-12-02 11:24:53,709 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-12-02 11:24:53,709 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-12-02 11:24:53,709 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2024-12-02 11:24:53,709 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2024-12-02 11:24:53,709 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-12-02 11:24:53,709 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-12-02 11:24:53,709 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2024-12-02 11:24:53,709 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2024-12-02 11:24:53,709 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-12-02 11:24:53,710 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-12-02 11:24:53,710 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-12-02 11:24:53,710 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-12-02 11:24:53,710 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-12-02 11:24:53,710 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-12-02 11:24:53,710 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-12-02 11:24:53,710 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-12-02 11:24:53,710 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-12-02 11:24:53,710 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-12-02 11:24:53,710 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-12-02 11:24:53,710 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-12-02 11:24:53,710 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-12-02 11:24:53,710 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-12-02 11:24:53,711 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-12-02 11:24:53,711 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-12-02 11:24:53,711 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-12-02 11:24:53,711 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-12-02 11:24:53,711 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-12-02 11:24:53,711 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-12-02 11:24:53,711 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-12-02 11:24:53,711 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-12-02 11:24:53,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 11:24:53,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 11:24:53,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-12-02 11:24:53,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-12-02 11:24:53,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-12-02 11:24:53,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-12-02 11:24:53,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-12-02 11:24:53,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-12-02 11:24:53,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-12-02 11:24:53,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-12-02 11:24:53,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-12-02 11:24:53,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-12-02 11:24:53,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-12-02 11:24:53,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-12-02 11:24:53,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-12-02 11:24:53,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-12-02 11:24:53,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-12-02 11:24:53,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-12-02 11:24:53,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2024-12-02 11:24:53,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2024-12-02 11:24:53,713 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2024-12-02 11:24:53,713 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2024-12-02 11:24:53,713 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-12-02 11:24:53,713 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-12-02 11:24:53,713 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-12-02 11:24:53,713 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-12-02 11:24:53,713 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-12-02 11:24:53,713 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-12-02 11:24:53,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 11:24:53,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 11:24:53,713 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-12-02 11:24:53,714 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-12-02 11:24:53,894 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 11:24:53,897 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 11:24:55,144 INFO L? ?]: Removed 472 outVars from TransFormulas that were not future-live. [2024-12-02 11:24:55,144 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 11:24:55,170 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 11:24:55,170 INFO L312 CfgBuilder]: Removed 8 assume(true) statements. [2024-12-02 11:24:55,171 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:24:55 BoogieIcfgContainer [2024-12-02 11:24:55,171 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 11:24:55,174 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 11:24:55,174 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 11:24:55,178 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 11:24:55,178 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 11:24:52" (1/3) ... [2024-12-02 11:24:55,179 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3564c130 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 11:24:55, skipping insertion in model container [2024-12-02 11:24:55,179 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:24:53" (2/3) ... [2024-12-02 11:24:55,179 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3564c130 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 11:24:55, skipping insertion in model container [2024-12-02 11:24:55,179 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:24:55" (3/3) ... [2024-12-02 11:24:55,181 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product29.cil.c [2024-12-02 11:24:55,193 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 11:24:55,195 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec13_product29.cil.c that has 26 procedures, 597 locations, 1 initial locations, 4 loop locations, and 1 error locations. [2024-12-02 11:24:55,260 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 11:24:55,272 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;@4e1cce0d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 11:24:55,272 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 11:24:55,278 INFO L276 IsEmpty]: Start isEmpty. Operand has 597 states, 470 states have (on average 1.7) internal successors, (799), 488 states have internal predecessors, (799), 100 states have call successors, (100), 25 states have call predecessors, (100), 25 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2024-12-02 11:24:55,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-12-02 11:24:55,309 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:24:55,310 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 11:24:55,310 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:24:55,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:24:55,315 INFO L85 PathProgramCache]: Analyzing trace with hash 591917306, now seen corresponding path program 1 times [2024-12-02 11:24:55,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:24:55,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370986459] [2024-12-02 11:24:55,322 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:24:55,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:24:55,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:24:55,997 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-12-02 11:24:55,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:24:55,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370986459] [2024-12-02 11:24:55,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370986459] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:24:55,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [662878891] [2024-12-02 11:24:55,999 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:24:55,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:24:55,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:24:56,004 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:24:56,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 11:24:56,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:24:56,451 INFO L256 TraceCheckSpWp]: Trace formula consists of 1383 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 11:24:56,461 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:24:56,488 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-12-02 11:24:56,489 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 11:24:56,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [662878891] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:24:56,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 11:24:56,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 6 [2024-12-02 11:24:56,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848004627] [2024-12-02 11:24:56,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:24:56,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 11:24:56,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:24:56,521 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 11:24:56,522 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 11:24:56,525 INFO L87 Difference]: Start difference. First operand has 597 states, 470 states have (on average 1.7) internal successors, (799), 488 states have internal predecessors, (799), 100 states have call successors, (100), 25 states have call predecessors, (100), 25 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) Second operand has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 11:24:56,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:24:56,633 INFO L93 Difference]: Finished difference Result 1172 states and 1981 transitions. [2024-12-02 11:24:56,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 11:24:56,636 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 114 [2024-12-02 11:24:56,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:24:56,652 INFO L225 Difference]: With dead ends: 1172 [2024-12-02 11:24:56,652 INFO L226 Difference]: Without dead ends: 587 [2024-12-02 11:24:56,660 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 116 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 11:24:56,663 INFO L435 NwaCegarLoop]: 987 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 987 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 11:24:56,664 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 987 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 11:24:56,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2024-12-02 11:24:56,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 587. [2024-12-02 11:24:56,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 587 states, 463 states have (on average 1.6825053995680346) internal successors, (779), 479 states have internal predecessors, (779), 100 states have call successors, (100), 25 states have call predecessors, (100), 23 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2024-12-02 11:24:56,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 976 transitions. [2024-12-02 11:24:56,759 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 976 transitions. Word has length 114 [2024-12-02 11:24:56,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:24:56,761 INFO L471 AbstractCegarLoop]: Abstraction has 587 states and 976 transitions. [2024-12-02 11:24:56,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 11:24:56,761 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 976 transitions. [2024-12-02 11:24:56,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-12-02 11:24:56,771 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:24:56,771 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 11:24:56,785 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 11:24:56,972 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-12-02 11:24:56,972 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:24:56,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:24:56,973 INFO L85 PathProgramCache]: Analyzing trace with hash -670493254, now seen corresponding path program 1 times [2024-12-02 11:24:56,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:24:56,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666766943] [2024-12-02 11:24:56,973 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:24:56,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:24:57,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:24:57,361 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-12-02 11:24:57,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:24:57,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666766943] [2024-12-02 11:24:57,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666766943] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:24:57,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820826950] [2024-12-02 11:24:57,362 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:24:57,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:24:57,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:24:57,365 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:24:57,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 11:24:57,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:24:57,787 INFO L256 TraceCheckSpWp]: Trace formula consists of 1383 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 11:24:57,794 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:24:57,863 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-12-02 11:24:57,863 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 11:24:57,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1820826950] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:24:57,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 11:24:57,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-12-02 11:24:57,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932067230] [2024-12-02 11:24:57,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:24:57,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 11:24:57,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:24:57,866 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 11:24:57,866 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-02 11:24:57,866 INFO L87 Difference]: Start difference. First operand 587 states and 976 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, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 11:24:58,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:24:58,022 INFO L93 Difference]: Finished difference Result 1175 states and 1960 transitions. [2024-12-02 11:24:58,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 11:24:58,026 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, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 114 [2024-12-02 11:24:58,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:24:58,034 INFO L225 Difference]: With dead ends: 1175 [2024-12-02 11:24:58,034 INFO L226 Difference]: Without dead ends: 596 [2024-12-02 11:24:58,039 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-12-02 11:24:58,040 INFO L435 NwaCegarLoop]: 963 mSDtfsCounter, 17 mSDsluCounter, 1918 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 2881 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 11:24:58,041 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 2881 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 11:24:58,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2024-12-02 11:24:58,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 596. [2024-12-02 11:24:58,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 471 states have (on average 1.683651804670913) internal successors, (793), 487 states have internal predecessors, (793), 100 states have call successors, (100), 26 states have call predecessors, (100), 24 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2024-12-02 11:24:58,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 990 transitions. [2024-12-02 11:24:58,093 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 990 transitions. Word has length 114 [2024-12-02 11:24:58,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:24:58,093 INFO L471 AbstractCegarLoop]: Abstraction has 596 states and 990 transitions. [2024-12-02 11:24:58,093 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, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 11:24:58,093 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 990 transitions. [2024-12-02 11:24:58,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-12-02 11:24:58,100 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:24:58,100 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 11:24:58,114 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 11:24:58,301 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:24:58,301 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:24:58,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:24:58,301 INFO L85 PathProgramCache]: Analyzing trace with hash -592583340, now seen corresponding path program 1 times [2024-12-02 11:24:58,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:24:58,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960169986] [2024-12-02 11:24:58,302 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:24:58,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:24:58,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:24:58,636 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-12-02 11:24:58,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:24:58,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960169986] [2024-12-02 11:24:58,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960169986] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:24:58,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1244300667] [2024-12-02 11:24:58,637 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:24:58,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:24:58,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:24:58,639 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:24:58,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 11:24:58,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:24:58,965 INFO L256 TraceCheckSpWp]: Trace formula consists of 1385 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 11:24:58,969 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:24:59,007 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-12-02 11:24:59,007 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 11:24:59,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1244300667] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:24:59,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 11:24:59,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2024-12-02 11:24:59,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941101856] [2024-12-02 11:24:59,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:24:59,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 11:24:59,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:24:59,009 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 11:24:59,009 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-02 11:24:59,009 INFO L87 Difference]: Start difference. First operand 596 states and 990 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 11:24:59,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:24:59,292 INFO L93 Difference]: Finished difference Result 1245 states and 2084 transitions. [2024-12-02 11:24:59,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 11:24:59,294 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 116 [2024-12-02 11:24:59,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:24:59,299 INFO L225 Difference]: With dead ends: 1245 [2024-12-02 11:24:59,299 INFO L226 Difference]: Without dead ends: 659 [2024-12-02 11:24:59,303 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-12-02 11:24:59,304 INFO L435 NwaCegarLoop]: 951 mSDtfsCounter, 122 mSDsluCounter, 1825 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 2776 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 11:24:59,304 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 2776 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 11:24:59,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2024-12-02 11:24:59,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 641. [2024-12-02 11:24:59,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 641 states, 515 states have (on average 1.7029126213592234) internal successors, (877), 531 states have internal predecessors, (877), 100 states have call successors, (100), 27 states have call predecessors, (100), 25 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2024-12-02 11:24:59,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 1074 transitions. [2024-12-02 11:24:59,338 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 1074 transitions. Word has length 116 [2024-12-02 11:24:59,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:24:59,338 INFO L471 AbstractCegarLoop]: Abstraction has 641 states and 1074 transitions. [2024-12-02 11:24:59,338 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 11:24:59,338 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 1074 transitions. [2024-12-02 11:24:59,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-12-02 11:24:59,343 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:24:59,343 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 11:24:59,355 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 11:24:59,544 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:24:59,544 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:24:59,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:24:59,544 INFO L85 PathProgramCache]: Analyzing trace with hash -992951112, now seen corresponding path program 1 times [2024-12-02 11:24:59,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:24:59,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387916794] [2024-12-02 11:24:59,545 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:24:59,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:24:59,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:24:59,812 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-12-02 11:24:59,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:24:59,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387916794] [2024-12-02 11:24:59,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387916794] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:24:59,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874870403] [2024-12-02 11:24:59,812 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:24:59,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:24:59,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:24:59,814 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:24:59,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 11:25:00,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:25:00,127 INFO L256 TraceCheckSpWp]: Trace formula consists of 1387 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-12-02 11:25:00,131 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:25:00,203 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-12-02 11:25:00,203 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 11:25:00,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1874870403] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:25:00,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 11:25:00,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2024-12-02 11:25:00,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443514134] [2024-12-02 11:25:00,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:25:00,204 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 11:25:00,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:25:00,205 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 11:25:00,205 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-12-02 11:25:00,205 INFO L87 Difference]: Start difference. First operand 641 states and 1074 transitions. Second operand has 7 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-12-02 11:25:00,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:25:00,341 INFO L93 Difference]: Finished difference Result 1297 states and 2175 transitions. [2024-12-02 11:25:00,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 11:25:00,341 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 118 [2024-12-02 11:25:00,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:25:00,347 INFO L225 Difference]: With dead ends: 1297 [2024-12-02 11:25:00,347 INFO L226 Difference]: Without dead ends: 666 [2024-12-02 11:25:00,350 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-12-02 11:25:00,351 INFO L435 NwaCegarLoop]: 963 mSDtfsCounter, 89 mSDsluCounter, 4723 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 5686 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 11:25:00,352 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 5686 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 11:25:00,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2024-12-02 11:25:00,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 654. [2024-12-02 11:25:00,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 654 states, 525 states have (on average 1.6990476190476191) internal successors, (892), 543 states have internal predecessors, (892), 101 states have call successors, (101), 27 states have call predecessors, (101), 27 states have return successors, (102), 96 states have call predecessors, (102), 98 states have call successors, (102) [2024-12-02 11:25:00,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 1095 transitions. [2024-12-02 11:25:00,387 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 1095 transitions. Word has length 118 [2024-12-02 11:25:00,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:25:00,388 INFO L471 AbstractCegarLoop]: Abstraction has 654 states and 1095 transitions. [2024-12-02 11:25:00,388 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-12-02 11:25:00,388 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 1095 transitions. [2024-12-02 11:25:00,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-12-02 11:25:00,392 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:25:00,392 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 11:25:00,403 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 11:25:00,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:25:00,593 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:25:00,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:25:00,593 INFO L85 PathProgramCache]: Analyzing trace with hash 473534729, now seen corresponding path program 1 times [2024-12-02 11:25:00,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:25:00,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145365745] [2024-12-02 11:25:00,594 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:25:00,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:25:00,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:25:00,816 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-12-02 11:25:00,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:25:00,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145365745] [2024-12-02 11:25:00,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145365745] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:25:00,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591336974] [2024-12-02 11:25:00,816 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:25:00,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:25:00,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:25:00,819 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:25:00,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 11:25:01,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:25:01,156 INFO L256 TraceCheckSpWp]: Trace formula consists of 1388 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-12-02 11:25:01,159 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:25:01,224 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-12-02 11:25:01,224 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 11:25:01,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1591336974] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:25:01,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 11:25:01,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2024-12-02 11:25:01,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362033852] [2024-12-02 11:25:01,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:25:01,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 11:25:01,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:25:01,225 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 11:25:01,225 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-12-02 11:25:01,225 INFO L87 Difference]: Start difference. First operand 654 states and 1095 transitions. Second operand has 7 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-12-02 11:25:01,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:25:01,338 INFO L93 Difference]: Finished difference Result 1317 states and 2206 transitions. [2024-12-02 11:25:01,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 11:25:01,338 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 119 [2024-12-02 11:25:01,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:25:01,343 INFO L225 Difference]: With dead ends: 1317 [2024-12-02 11:25:01,343 INFO L226 Difference]: Without dead ends: 675 [2024-12-02 11:25:01,346 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-12-02 11:25:01,347 INFO L435 NwaCegarLoop]: 963 mSDtfsCounter, 100 mSDsluCounter, 4711 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 5674 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 11:25:01,347 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 5674 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 11:25:01,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2024-12-02 11:25:01,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 654. [2024-12-02 11:25:01,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 654 states, 525 states have (on average 1.6990476190476191) internal successors, (892), 543 states have internal predecessors, (892), 101 states have call successors, (101), 27 states have call predecessors, (101), 27 states have return successors, (102), 96 states have call predecessors, (102), 98 states have call successors, (102) [2024-12-02 11:25:01,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 1095 transitions. [2024-12-02 11:25:01,370 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 1095 transitions. Word has length 119 [2024-12-02 11:25:01,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:25:01,370 INFO L471 AbstractCegarLoop]: Abstraction has 654 states and 1095 transitions. [2024-12-02 11:25:01,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-12-02 11:25:01,370 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 1095 transitions. [2024-12-02 11:25:01,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-12-02 11:25:01,373 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:25:01,373 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 11:25:01,382 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 11:25:01,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:25:01,574 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:25:01,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:25:01,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1273412435, now seen corresponding path program 1 times [2024-12-02 11:25:01,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:25:01,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450420159] [2024-12-02 11:25:01,575 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:25:01,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:25:01,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:25:01,649 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-12-02 11:25:01,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:25:01,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450420159] [2024-12-02 11:25:01,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450420159] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:25:01,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944866923] [2024-12-02 11:25:01,649 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:25:01,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:25:01,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:25:01,651 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:25:01,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 11:25:01,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:25:01,959 INFO L256 TraceCheckSpWp]: Trace formula consists of 1388 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 11:25:01,963 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:25:01,995 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-12-02 11:25:01,995 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 11:25:01,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1944866923] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:25:01,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 11:25:01,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-12-02 11:25:01,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028063744] [2024-12-02 11:25:01,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:25:01,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 11:25:01,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:25:01,996 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 11:25:01,996 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-02 11:25:01,996 INFO L87 Difference]: Start difference. First operand 654 states and 1095 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 11:25:02,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:25:02,091 INFO L93 Difference]: Finished difference Result 1311 states and 2196 transitions. [2024-12-02 11:25:02,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 11:25:02,092 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 119 [2024-12-02 11:25:02,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:25:02,096 INFO L225 Difference]: With dead ends: 1311 [2024-12-02 11:25:02,097 INFO L226 Difference]: Without dead ends: 665 [2024-12-02 11:25:02,099 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-12-02 11:25:02,100 INFO L435 NwaCegarLoop]: 964 mSDtfsCounter, 12 mSDsluCounter, 1919 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2883 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 11:25:02,100 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2883 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 11:25:02,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2024-12-02 11:25:02,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 663. [2024-12-02 11:25:02,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 663 states, 533 states have (on average 1.6904315196998123) internal successors, (901), 551 states have internal predecessors, (901), 101 states have call successors, (101), 28 states have call predecessors, (101), 28 states have return successors, (101), 96 states have call predecessors, (101), 98 states have call successors, (101) [2024-12-02 11:25:02,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 1103 transitions. [2024-12-02 11:25:02,123 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 1103 transitions. Word has length 119 [2024-12-02 11:25:02,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:25:02,124 INFO L471 AbstractCegarLoop]: Abstraction has 663 states and 1103 transitions. [2024-12-02 11:25:02,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 11:25:02,124 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 1103 transitions. [2024-12-02 11:25:02,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-12-02 11:25:02,126 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:25:02,126 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 11:25:02,138 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-02 11:25:02,327 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-12-02 11:25:02,327 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:25:02,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:25:02,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1514841036, now seen corresponding path program 1 times [2024-12-02 11:25:02,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:25:02,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821777626] [2024-12-02 11:25:02,327 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:25:02,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:25:02,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:25:02,475 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-12-02 11:25:02,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:25:02,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821777626] [2024-12-02 11:25:02,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821777626] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:25:02,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1951382218] [2024-12-02 11:25:02,476 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:25:02,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:25:02,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:25:02,477 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:25:02,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 11:25:02,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:25:02,784 INFO L256 TraceCheckSpWp]: Trace formula consists of 1389 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-12-02 11:25:02,788 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:25:02,858 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-12-02 11:25:02,858 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 11:25:02,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1951382218] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:25:02,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 11:25:02,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2024-12-02 11:25:02,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103675179] [2024-12-02 11:25:02,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:25:02,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 11:25:02,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:25:02,860 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 11:25:02,860 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-12-02 11:25:02,860 INFO L87 Difference]: Start difference. First operand 663 states and 1103 transitions. Second operand has 7 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-12-02 11:25:02,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:25:02,988 INFO L93 Difference]: Finished difference Result 1326 states and 2209 transitions. [2024-12-02 11:25:02,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 11:25:02,989 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 120 [2024-12-02 11:25:02,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:25:02,994 INFO L225 Difference]: With dead ends: 1326 [2024-12-02 11:25:02,994 INFO L226 Difference]: Without dead ends: 686 [2024-12-02 11:25:02,997 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-12-02 11:25:02,998 INFO L435 NwaCegarLoop]: 963 mSDtfsCounter, 111 mSDsluCounter, 4699 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 5662 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 11:25:02,998 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 5662 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 11:25:02,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2024-12-02 11:25:03,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 663. [2024-12-02 11:25:03,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 663 states, 533 states have (on average 1.6904315196998123) internal successors, (901), 551 states have internal predecessors, (901), 101 states have call successors, (101), 28 states have call predecessors, (101), 28 states have return successors, (101), 96 states have call predecessors, (101), 98 states have call successors, (101) [2024-12-02 11:25:03,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 1103 transitions. [2024-12-02 11:25:03,028 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 1103 transitions. Word has length 120 [2024-12-02 11:25:03,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:25:03,029 INFO L471 AbstractCegarLoop]: Abstraction has 663 states and 1103 transitions. [2024-12-02 11:25:03,029 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-12-02 11:25:03,029 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 1103 transitions. [2024-12-02 11:25:03,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-12-02 11:25:03,033 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:25:03,033 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 11:25:03,043 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-02 11:25:03,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-12-02 11:25:03,234 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:25:03,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:25:03,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1442850574, now seen corresponding path program 1 times [2024-12-02 11:25:03,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:25:03,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530618379] [2024-12-02 11:25:03,234 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:25:03,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:25:03,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:25:03,441 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-12-02 11:25:03,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:25:03,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530618379] [2024-12-02 11:25:03,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530618379] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:25:03,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307301418] [2024-12-02 11:25:03,442 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:25:03,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:25:03,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:25:03,444 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:25:03,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 11:25:03,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:25:03,761 INFO L256 TraceCheckSpWp]: Trace formula consists of 1385 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-12-02 11:25:03,766 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:25:03,854 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-12-02 11:25:03,855 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 11:25:03,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307301418] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:25:03,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 11:25:03,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2024-12-02 11:25:03,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782880491] [2024-12-02 11:25:03,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:25:03,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 11:25:03,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:25:03,856 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 11:25:03,856 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-12-02 11:25:03,856 INFO L87 Difference]: Start difference. First operand 663 states and 1103 transitions. Second operand has 8 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-12-02 11:25:04,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:25:04,060 INFO L93 Difference]: Finished difference Result 1329 states and 2213 transitions. [2024-12-02 11:25:04,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 11:25:04,061 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 120 [2024-12-02 11:25:04,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:25:04,067 INFO L225 Difference]: With dead ends: 1329 [2024-12-02 11:25:04,067 INFO L226 Difference]: Without dead ends: 689 [2024-12-02 11:25:04,071 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-12-02 11:25:04,071 INFO L435 NwaCegarLoop]: 953 mSDtfsCounter, 95 mSDsluCounter, 5621 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 6574 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 11:25:04,072 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 6574 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 11:25:04,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2024-12-02 11:25:04,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 663. [2024-12-02 11:25:04,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 663 states, 533 states have (on average 1.6904315196998123) internal successors, (901), 551 states have internal predecessors, (901), 101 states have call successors, (101), 28 states have call predecessors, (101), 28 states have return successors, (101), 96 states have call predecessors, (101), 98 states have call successors, (101) [2024-12-02 11:25:04,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 1103 transitions. [2024-12-02 11:25:04,106 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 1103 transitions. Word has length 120 [2024-12-02 11:25:04,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:25:04,106 INFO L471 AbstractCegarLoop]: Abstraction has 663 states and 1103 transitions. [2024-12-02 11:25:04,106 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-12-02 11:25:04,107 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 1103 transitions. [2024-12-02 11:25:04,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-12-02 11:25:04,111 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:25:04,111 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 11:25:04,124 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-12-02 11:25:04,312 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-12-02 11:25:04,312 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:25:04,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:25:04,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1051100997, now seen corresponding path program 1 times [2024-12-02 11:25:04,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:25:04,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706012336] [2024-12-02 11:25:04,313 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:25:04,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:25:04,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:25:04,493 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-12-02 11:25:04,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:25:04,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706012336] [2024-12-02 11:25:04,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706012336] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:25:04,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133265325] [2024-12-02 11:25:04,493 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:25:04,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:25:04,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:25:04,496 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:25:04,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 11:25:04,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:25:04,871 INFO L256 TraceCheckSpWp]: Trace formula consists of 1386 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-12-02 11:25:04,875 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:25:04,974 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-12-02 11:25:04,974 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 11:25:04,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1133265325] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:25:04,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 11:25:04,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2024-12-02 11:25:04,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442400496] [2024-12-02 11:25:04,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:25:04,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 11:25:04,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:25:04,976 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 11:25:04,976 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-12-02 11:25:04,976 INFO L87 Difference]: Start difference. First operand 663 states and 1103 transitions. Second operand has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-12-02 11:25:05,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:25:05,177 INFO L93 Difference]: Finished difference Result 1329 states and 2213 transitions. [2024-12-02 11:25:05,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 11:25:05,178 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 121 [2024-12-02 11:25:05,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:25:05,184 INFO L225 Difference]: With dead ends: 1329 [2024-12-02 11:25:05,185 INFO L226 Difference]: Without dead ends: 689 [2024-12-02 11:25:05,189 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-12-02 11:25:05,189 INFO L435 NwaCegarLoop]: 953 mSDtfsCounter, 105 mSDsluCounter, 5609 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 6562 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 11:25:05,190 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 6562 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 11:25:05,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2024-12-02 11:25:05,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 663. [2024-12-02 11:25:05,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 663 states, 533 states have (on average 1.6904315196998123) internal successors, (901), 551 states have internal predecessors, (901), 101 states have call successors, (101), 28 states have call predecessors, (101), 28 states have return successors, (101), 96 states have call predecessors, (101), 98 states have call successors, (101) [2024-12-02 11:25:05,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 1103 transitions. [2024-12-02 11:25:05,232 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 1103 transitions. Word has length 121 [2024-12-02 11:25:05,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:25:05,232 INFO L471 AbstractCegarLoop]: Abstraction has 663 states and 1103 transitions. [2024-12-02 11:25:05,232 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-12-02 11:25:05,232 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 1103 transitions. [2024-12-02 11:25:05,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-12-02 11:25:05,238 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:25:05,238 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 11:25:05,251 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-12-02 11:25:05,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:25:05,439 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:25:05,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:25:05,439 INFO L85 PathProgramCache]: Analyzing trace with hash 583147501, now seen corresponding path program 1 times [2024-12-02 11:25:05,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:25:05,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784247522] [2024-12-02 11:25:05,440 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:25:05,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:25:05,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:25:05,639 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-12-02 11:25:05,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:25:05,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784247522] [2024-12-02 11:25:05,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784247522] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:25:05,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1071695048] [2024-12-02 11:25:05,639 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:25:05,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:25:05,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:25:05,642 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:25:05,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-02 11:25:05,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:25:05,938 INFO L256 TraceCheckSpWp]: Trace formula consists of 1387 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-12-02 11:25:05,942 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:25:06,018 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-12-02 11:25:06,018 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 11:25:06,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1071695048] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:25:06,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 11:25:06,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2024-12-02 11:25:06,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23882008] [2024-12-02 11:25:06,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:25:06,019 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 11:25:06,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:25:06,020 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 11:25:06,020 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-12-02 11:25:06,020 INFO L87 Difference]: Start difference. First operand 663 states and 1103 transitions. Second operand has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-12-02 11:25:06,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:25:06,188 INFO L93 Difference]: Finished difference Result 1320 states and 2198 transitions. [2024-12-02 11:25:06,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 11:25:06,189 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 122 [2024-12-02 11:25:06,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:25:06,194 INFO L225 Difference]: With dead ends: 1320 [2024-12-02 11:25:06,194 INFO L226 Difference]: Without dead ends: 680 [2024-12-02 11:25:06,197 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-12-02 11:25:06,198 INFO L435 NwaCegarLoop]: 953 mSDtfsCounter, 115 mSDsluCounter, 5597 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 6550 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 11:25:06,198 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 6550 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 11:25:06,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2024-12-02 11:25:06,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 663. [2024-12-02 11:25:06,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 663 states, 533 states have (on average 1.6904315196998123) internal successors, (901), 551 states have internal predecessors, (901), 101 states have call successors, (101), 28 states have call predecessors, (101), 28 states have return successors, (101), 96 states have call predecessors, (101), 98 states have call successors, (101) [2024-12-02 11:25:06,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 1103 transitions. [2024-12-02 11:25:06,228 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 1103 transitions. Word has length 122 [2024-12-02 11:25:06,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:25:06,229 INFO L471 AbstractCegarLoop]: Abstraction has 663 states and 1103 transitions. [2024-12-02 11:25:06,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-12-02 11:25:06,229 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 1103 transitions. [2024-12-02 11:25:06,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-12-02 11:25:06,233 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:25:06,234 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 11:25:06,246 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-12-02 11:25:06,434 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:25:06,434 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:25:06,435 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:25:06,435 INFO L85 PathProgramCache]: Analyzing trace with hash -474054705, now seen corresponding path program 1 times [2024-12-02 11:25:06,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:25:06,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726320752] [2024-12-02 11:25:06,435 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:25:06,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:25:06,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:25:06,543 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-12-02 11:25:06,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:25:06,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726320752] [2024-12-02 11:25:06,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726320752] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:25:06,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013442694] [2024-12-02 11:25:06,544 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:25:06,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:25:06,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:25:06,546 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:25:06,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-12-02 11:25:06,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:25:06,877 INFO L256 TraceCheckSpWp]: Trace formula consists of 1390 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 11:25:06,881 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:25:06,903 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-02 11:25:06,903 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 11:25:06,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1013442694] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:25:06,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 11:25:06,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-12-02 11:25:06,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582212745] [2024-12-02 11:25:06,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:25:06,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 11:25:06,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:25:06,904 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 11:25:06,904 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-02 11:25:06,904 INFO L87 Difference]: Start difference. First operand 663 states and 1103 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 11:25:06,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:25:06,970 INFO L93 Difference]: Finished difference Result 1292 states and 2158 transitions. [2024-12-02 11:25:06,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 11:25:06,970 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 122 [2024-12-02 11:25:06,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:25:06,974 INFO L225 Difference]: With dead ends: 1292 [2024-12-02 11:25:06,974 INFO L226 Difference]: Without dead ends: 663 [2024-12-02 11:25:06,977 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-12-02 11:25:06,978 INFO L435 NwaCegarLoop]: 961 mSDtfsCounter, 20 mSDsluCounter, 1916 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2877 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 11:25:06,978 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2877 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 11:25:06,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2024-12-02 11:25:06,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 663. [2024-12-02 11:25:06,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 663 states, 533 states have (on average 1.6810506566604129) internal successors, (896), 551 states have internal predecessors, (896), 101 states have call successors, (101), 28 states have call predecessors, (101), 28 states have return successors, (101), 96 states have call predecessors, (101), 98 states have call successors, (101) [2024-12-02 11:25:06,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 1098 transitions. [2024-12-02 11:25:06,998 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 1098 transitions. Word has length 122 [2024-12-02 11:25:06,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:25:06,998 INFO L471 AbstractCegarLoop]: Abstraction has 663 states and 1098 transitions. [2024-12-02 11:25:06,998 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 11:25:06,998 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 1098 transitions. [2024-12-02 11:25:07,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-12-02 11:25:07,002 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:25:07,002 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 11:25:07,014 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-12-02 11:25:07,202 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:25:07,202 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:25:07,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:25:07,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1072503328, now seen corresponding path program 1 times [2024-12-02 11:25:07,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:25:07,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564444247] [2024-12-02 11:25:07,203 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:25:07,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:25:07,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:25:07,263 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-12-02 11:25:07,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:25:07,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564444247] [2024-12-02 11:25:07,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564444247] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:25:07,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727022310] [2024-12-02 11:25:07,264 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:25:07,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:25:07,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:25:07,266 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:25:07,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-12-02 11:25:07,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:25:07,582 INFO L256 TraceCheckSpWp]: Trace formula consists of 1391 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 11:25:07,584 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:25:07,608 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-12-02 11:25:07,608 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 11:25:07,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [727022310] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:25:07,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 11:25:07,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-12-02 11:25:07,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193350888] [2024-12-02 11:25:07,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:25:07,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 11:25:07,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:25:07,609 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 11:25:07,609 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 11:25:07,610 INFO L87 Difference]: Start difference. First operand 663 states and 1098 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 11:25:07,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:25:07,781 INFO L93 Difference]: Finished difference Result 1321 states and 2198 transitions. [2024-12-02 11:25:07,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 11:25:07,782 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 123 [2024-12-02 11:25:07,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:25:07,786 INFO L225 Difference]: With dead ends: 1321 [2024-12-02 11:25:07,787 INFO L226 Difference]: Without dead ends: 750 [2024-12-02 11:25:07,788 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 123 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 11:25:07,789 INFO L435 NwaCegarLoop]: 926 mSDtfsCounter, 171 mSDsluCounter, 1823 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 2749 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 11:25:07,789 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 2749 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 11:25:07,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2024-12-02 11:25:07,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 708. [2024-12-02 11:25:07,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 708 states, 577 states have (on average 1.6984402079722705) internal successors, (980), 595 states have internal predecessors, (980), 101 states have call successors, (101), 29 states have call predecessors, (101), 29 states have return successors, (100), 96 states have call predecessors, (100), 98 states have call successors, (100) [2024-12-02 11:25:07,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 708 states to 708 states and 1181 transitions. [2024-12-02 11:25:07,808 INFO L78 Accepts]: Start accepts. Automaton has 708 states and 1181 transitions. Word has length 123 [2024-12-02 11:25:07,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:25:07,808 INFO L471 AbstractCegarLoop]: Abstraction has 708 states and 1181 transitions. [2024-12-02 11:25:07,808 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 11:25:07,808 INFO L276 IsEmpty]: Start isEmpty. Operand 708 states and 1181 transitions. [2024-12-02 11:25:07,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-12-02 11:25:07,811 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:25:07,811 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 11:25:07,818 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-12-02 11:25:08,011 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:25:08,011 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:25:08,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:25:08,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1541488891, now seen corresponding path program 1 times [2024-12-02 11:25:08,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:25:08,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675167289] [2024-12-02 11:25:08,012 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:25:08,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:25:08,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:25:08,077 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-12-02 11:25:08,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:25:08,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675167289] [2024-12-02 11:25:08,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675167289] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:25:08,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250643365] [2024-12-02 11:25:08,078 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:25:08,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:25:08,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:25:08,079 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:25:08,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-12-02 11:25:08,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:25:08,374 INFO L256 TraceCheckSpWp]: Trace formula consists of 1392 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-12-02 11:25:08,377 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:25:08,433 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-12-02 11:25:08,433 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 11:25:08,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1250643365] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:25:08,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 11:25:08,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2024-12-02 11:25:08,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750648313] [2024-12-02 11:25:08,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:25:08,434 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 11:25:08,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:25:08,435 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 11:25:08,435 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-02 11:25:08,435 INFO L87 Difference]: Start difference. First operand 708 states and 1181 transitions. Second operand has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-12-02 11:25:08,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:25:08,544 INFO L93 Difference]: Finished difference Result 1314 states and 2185 transitions. [2024-12-02 11:25:08,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 11:25:08,544 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 124 [2024-12-02 11:25:08,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:25:08,550 INFO L225 Difference]: With dead ends: 1314 [2024-12-02 11:25:08,550 INFO L226 Difference]: Without dead ends: 743 [2024-12-02 11:25:08,553 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-12-02 11:25:08,554 INFO L435 NwaCegarLoop]: 964 mSDtfsCounter, 89 mSDsluCounter, 4731 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 5695 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 11:25:08,554 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 5695 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 11:25:08,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 743 states. [2024-12-02 11:25:08,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 743 to 721. [2024-12-02 11:25:08,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 721 states, 587 states have (on average 1.6950596252129473) internal successors, (995), 607 states have internal predecessors, (995), 102 states have call successors, (102), 29 states have call predecessors, (102), 31 states have return successors, (103), 97 states have call predecessors, (103), 99 states have call successors, (103) [2024-12-02 11:25:08,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 1200 transitions. [2024-12-02 11:25:08,584 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 1200 transitions. Word has length 124 [2024-12-02 11:25:08,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:25:08,584 INFO L471 AbstractCegarLoop]: Abstraction has 721 states and 1200 transitions. [2024-12-02 11:25:08,584 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-12-02 11:25:08,584 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 1200 transitions. [2024-12-02 11:25:08,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-12-02 11:25:08,588 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:25:08,589 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 11:25:08,601 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-12-02 11:25:08,789 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:25:08,789 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:25:08,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:25:08,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1522799962, now seen corresponding path program 1 times [2024-12-02 11:25:08,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:25:08,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576899233] [2024-12-02 11:25:08,790 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:25:08,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:25:08,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:25:08,882 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-12-02 11:25:08,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:25:08,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576899233] [2024-12-02 11:25:08,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576899233] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:25:08,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462804467] [2024-12-02 11:25:08,883 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:25:08,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:25:08,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:25:08,885 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:25:08,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-12-02 11:25:09,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:25:09,124 INFO L256 TraceCheckSpWp]: Trace formula consists of 1393 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-12-02 11:25:09,127 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:25:09,171 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-12-02 11:25:09,172 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 11:25:09,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1462804467] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:25:09,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 11:25:09,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2024-12-02 11:25:09,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025985458] [2024-12-02 11:25:09,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:25:09,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 11:25:09,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:25:09,173 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 11:25:09,173 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-02 11:25:09,173 INFO L87 Difference]: Start difference. First operand 721 states and 1200 transitions. Second operand has 7 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-12-02 11:25:09,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:25:09,257 INFO L93 Difference]: Finished difference Result 1323 states and 2199 transitions. [2024-12-02 11:25:09,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 11:25:09,258 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 125 [2024-12-02 11:25:09,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:25:09,262 INFO L225 Difference]: With dead ends: 1323 [2024-12-02 11:25:09,263 INFO L226 Difference]: Without dead ends: 752 [2024-12-02 11:25:09,265 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-12-02 11:25:09,266 INFO L435 NwaCegarLoop]: 964 mSDtfsCounter, 100 mSDsluCounter, 4719 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 5683 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 11:25:09,266 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 5683 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 11:25:09,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2024-12-02 11:25:09,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 721. [2024-12-02 11:25:09,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 721 states, 587 states have (on average 1.6950596252129473) internal successors, (995), 607 states have internal predecessors, (995), 102 states have call successors, (102), 29 states have call predecessors, (102), 31 states have return successors, (103), 97 states have call predecessors, (103), 99 states have call successors, (103) [2024-12-02 11:25:09,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 1200 transitions. [2024-12-02 11:25:09,293 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 1200 transitions. Word has length 125 [2024-12-02 11:25:09,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:25:09,293 INFO L471 AbstractCegarLoop]: Abstraction has 721 states and 1200 transitions. [2024-12-02 11:25:09,293 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-12-02 11:25:09,293 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 1200 transitions. [2024-12-02 11:25:09,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-12-02 11:25:09,296 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:25:09,296 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 11:25:09,308 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-12-02 11:25:09,497 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:25:09,497 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:25:09,497 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:25:09,497 INFO L85 PathProgramCache]: Analyzing trace with hash -456161062, now seen corresponding path program 1 times [2024-12-02 11:25:09,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:25:09,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154918387] [2024-12-02 11:25:09,498 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:25:09,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:25:09,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:25:09,580 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-12-02 11:25:09,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:25:09,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154918387] [2024-12-02 11:25:09,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154918387] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:25:09,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321175228] [2024-12-02 11:25:09,581 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:25:09,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:25:09,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:25:09,583 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:25:09,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-12-02 11:25:09,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:25:09,862 INFO L256 TraceCheckSpWp]: Trace formula consists of 1389 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-12-02 11:25:09,864 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:25:09,923 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-12-02 11:25:09,923 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 11:25:09,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1321175228] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:25:09,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 11:25:09,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2024-12-02 11:25:09,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270589756] [2024-12-02 11:25:09,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:25:09,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 11:25:09,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:25:09,924 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 11:25:09,924 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-12-02 11:25:09,924 INFO L87 Difference]: Start difference. First operand 721 states and 1200 transitions. Second operand has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-12-02 11:25:10,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:25:10,059 INFO L93 Difference]: Finished difference Result 1326 states and 2202 transitions. [2024-12-02 11:25:10,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 11:25:10,060 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 125 [2024-12-02 11:25:10,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:25:10,065 INFO L225 Difference]: With dead ends: 1326 [2024-12-02 11:25:10,065 INFO L226 Difference]: Without dead ends: 755 [2024-12-02 11:25:10,068 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-12-02 11:25:10,068 INFO L435 NwaCegarLoop]: 954 mSDtfsCounter, 96 mSDsluCounter, 5630 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 6584 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 11:25:10,068 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 6584 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 11:25:10,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2024-12-02 11:25:10,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 721. [2024-12-02 11:25:10,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 721 states, 587 states have (on average 1.6950596252129473) internal successors, (995), 607 states have internal predecessors, (995), 102 states have call successors, (102), 29 states have call predecessors, (102), 31 states have return successors, (103), 97 states have call predecessors, (103), 99 states have call successors, (103) [2024-12-02 11:25:10,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 1200 transitions. [2024-12-02 11:25:10,096 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 1200 transitions. Word has length 125 [2024-12-02 11:25:10,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:25:10,096 INFO L471 AbstractCegarLoop]: Abstraction has 721 states and 1200 transitions. [2024-12-02 11:25:10,096 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-12-02 11:25:10,096 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 1200 transitions. [2024-12-02 11:25:10,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-12-02 11:25:10,099 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:25:10,099 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 11:25:10,111 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-12-02 11:25:10,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-12-02 11:25:10,300 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:25:10,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:25:10,300 INFO L85 PathProgramCache]: Analyzing trace with hash 183607056, now seen corresponding path program 1 times [2024-12-02 11:25:10,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:25:10,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588979393] [2024-12-02 11:25:10,300 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:25:10,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:25:10,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:25:10,391 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-12-02 11:25:10,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:25:10,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588979393] [2024-12-02 11:25:10,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588979393] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:25:10,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91328548] [2024-12-02 11:25:10,392 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:25:10,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:25:10,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:25:10,394 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:25:10,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-12-02 11:25:10,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:25:10,699 INFO L256 TraceCheckSpWp]: Trace formula consists of 1393 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 11:25:10,702 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:25:10,727 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-02 11:25:10,727 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 11:25:10,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [91328548] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:25:10,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 11:25:10,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-12-02 11:25:10,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062998684] [2024-12-02 11:25:10,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:25:10,728 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 11:25:10,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:25:10,728 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 11:25:10,728 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-02 11:25:10,728 INFO L87 Difference]: Start difference. First operand 721 states and 1200 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 11:25:10,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:25:10,766 INFO L93 Difference]: Finished difference Result 1368 states and 2281 transitions. [2024-12-02 11:25:10,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 11:25:10,767 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 125 [2024-12-02 11:25:10,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:25:10,770 INFO L225 Difference]: With dead ends: 1368 [2024-12-02 11:25:10,770 INFO L226 Difference]: Without dead ends: 721 [2024-12-02 11:25:10,772 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-02 11:25:10,773 INFO L435 NwaCegarLoop]: 965 mSDtfsCounter, 2 mSDsluCounter, 1921 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2886 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 11:25:10,773 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2886 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 11:25:10,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2024-12-02 11:25:10,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 721. [2024-12-02 11:25:10,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 721 states, 587 states have (on average 1.6899488926746167) internal successors, (992), 607 states have internal predecessors, (992), 102 states have call successors, (102), 29 states have call predecessors, (102), 31 states have return successors, (103), 97 states have call predecessors, (103), 99 states have call successors, (103) [2024-12-02 11:25:10,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 1197 transitions. [2024-12-02 11:25:10,790 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 1197 transitions. Word has length 125 [2024-12-02 11:25:10,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:25:10,790 INFO L471 AbstractCegarLoop]: Abstraction has 721 states and 1197 transitions. [2024-12-02 11:25:10,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 11:25:10,791 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 1197 transitions. [2024-12-02 11:25:10,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-12-02 11:25:10,792 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:25:10,793 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:25:10,803 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-12-02 11:25:10,993 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:25:10,993 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:25:10,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:25:10,993 INFO L85 PathProgramCache]: Analyzing trace with hash 520163193, now seen corresponding path program 1 times [2024-12-02 11:25:10,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:25:10,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724811772] [2024-12-02 11:25:10,994 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:25:10,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:25:11,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:25:11,063 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-12-02 11:25:11,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:25:11,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724811772] [2024-12-02 11:25:11,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724811772] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:25:11,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151307173] [2024-12-02 11:25:11,063 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:25:11,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:25:11,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:25:11,065 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:25:11,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-12-02 11:25:11,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:25:11,326 INFO L256 TraceCheckSpWp]: Trace formula consists of 1390 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-12-02 11:25:11,329 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:25:11,390 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-12-02 11:25:11,390 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 11:25:11,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1151307173] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:25:11,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 11:25:11,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2024-12-02 11:25:11,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971523228] [2024-12-02 11:25:11,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:25:11,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 11:25:11,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:25:11,392 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 11:25:11,392 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-12-02 11:25:11,392 INFO L87 Difference]: Start difference. First operand 721 states and 1197 transitions. Second operand has 8 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-12-02 11:25:11,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:25:11,519 INFO L93 Difference]: Finished difference Result 1317 states and 2185 transitions. [2024-12-02 11:25:11,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 11:25:11,520 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 126 [2024-12-02 11:25:11,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:25:11,525 INFO L225 Difference]: With dead ends: 1317 [2024-12-02 11:25:11,525 INFO L226 Difference]: Without dead ends: 746 [2024-12-02 11:25:11,528 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-12-02 11:25:11,529 INFO L435 NwaCegarLoop]: 951 mSDtfsCounter, 106 mSDsluCounter, 5603 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 6554 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 11:25:11,529 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 6554 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 11:25:11,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2024-12-02 11:25:11,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 721. [2024-12-02 11:25:11,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 721 states, 587 states have (on average 1.6899488926746167) internal successors, (992), 607 states have internal predecessors, (992), 102 states have call successors, (102), 29 states have call predecessors, (102), 31 states have return successors, (103), 97 states have call predecessors, (103), 99 states have call successors, (103) [2024-12-02 11:25:11,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 1197 transitions. [2024-12-02 11:25:11,556 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 1197 transitions. Word has length 126 [2024-12-02 11:25:11,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:25:11,557 INFO L471 AbstractCegarLoop]: Abstraction has 721 states and 1197 transitions. [2024-12-02 11:25:11,557 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-12-02 11:25:11,557 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 1197 transitions. [2024-12-02 11:25:11,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-12-02 11:25:11,560 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:25:11,560 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:25:11,572 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-12-02 11:25:11,762 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-12-02 11:25:11,762 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:25:11,762 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:25:11,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1475939115, now seen corresponding path program 1 times [2024-12-02 11:25:11,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:25:11,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647177764] [2024-12-02 11:25:11,763 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:25:11,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:25:11,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:25:11,849 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-12-02 11:25:11,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:25:11,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647177764] [2024-12-02 11:25:11,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647177764] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:25:11,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1177005779] [2024-12-02 11:25:11,849 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:25:11,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:25:11,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:25:11,851 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:25:11,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-12-02 11:25:12,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:25:12,172 INFO L256 TraceCheckSpWp]: Trace formula consists of 1391 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 11:25:12,174 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:25:12,192 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-12-02 11:25:12,192 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 11:25:12,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1177005779] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:25:12,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 11:25:12,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-12-02 11:25:12,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315729883] [2024-12-02 11:25:12,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:25:12,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 11:25:12,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:25:12,193 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 11:25:12,193 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 11:25:12,193 INFO L87 Difference]: Start difference. First operand 721 states and 1197 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 11:25:12,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:25:12,244 INFO L93 Difference]: Finished difference Result 1309 states and 2185 transitions. [2024-12-02 11:25:12,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 11:25:12,245 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 127 [2024-12-02 11:25:12,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:25:12,250 INFO L225 Difference]: With dead ends: 1309 [2024-12-02 11:25:12,250 INFO L226 Difference]: Without dead ends: 742 [2024-12-02 11:25:12,253 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 126 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 11:25:12,253 INFO L435 NwaCegarLoop]: 994 mSDtfsCounter, 54 mSDsluCounter, 1928 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 2922 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 11:25:12,254 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 2922 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 11:25:12,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2024-12-02 11:25:12,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 742. [2024-12-02 11:25:12,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 742 states, 607 states have (on average 1.6902800658978583) internal successors, (1026), 627 states have internal predecessors, (1026), 102 states have call successors, (102), 30 states have call predecessors, (102), 32 states have return successors, (103), 97 states have call predecessors, (103), 99 states have call successors, (103) [2024-12-02 11:25:12,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 742 states to 742 states and 1231 transitions. [2024-12-02 11:25:12,277 INFO L78 Accepts]: Start accepts. Automaton has 742 states and 1231 transitions. Word has length 127 [2024-12-02 11:25:12,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:25:12,278 INFO L471 AbstractCegarLoop]: Abstraction has 742 states and 1231 transitions. [2024-12-02 11:25:12,278 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 11:25:12,278 INFO L276 IsEmpty]: Start isEmpty. Operand 742 states and 1231 transitions. [2024-12-02 11:25:12,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-12-02 11:25:12,280 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:25:12,281 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 11:25:12,292 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-12-02 11:25:12,481 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-12-02 11:25:12,481 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:25:12,481 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:25:12,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1085130588, now seen corresponding path program 1 times [2024-12-02 11:25:12,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:25:12,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140764517] [2024-12-02 11:25:12,482 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:25:12,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:25:12,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:25:12,542 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-12-02 11:25:12,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:25:12,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140764517] [2024-12-02 11:25:12,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140764517] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:25:12,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680337413] [2024-12-02 11:25:12,543 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:25:12,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:25:12,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:25:12,544 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:25:12,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-12-02 11:25:12,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:25:12,824 INFO L256 TraceCheckSpWp]: Trace formula consists of 1388 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 11:25:12,826 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:25:12,871 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-12-02 11:25:12,871 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 11:25:12,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1680337413] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:25:12,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 11:25:12,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2024-12-02 11:25:12,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969062315] [2024-12-02 11:25:12,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:25:12,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 11:25:12,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:25:12,872 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 11:25:12,872 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-12-02 11:25:12,873 INFO L87 Difference]: Start difference. First operand 742 states and 1231 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-12-02 11:25:13,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:25:13,678 INFO L93 Difference]: Finished difference Result 2444 states and 4140 transitions. [2024-12-02 11:25:13,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 11:25:13,679 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 127 [2024-12-02 11:25:13,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:25:13,690 INFO L225 Difference]: With dead ends: 2444 [2024-12-02 11:25:13,690 INFO L226 Difference]: Without dead ends: 1856 [2024-12-02 11:25:13,694 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-12-02 11:25:13,695 INFO L435 NwaCegarLoop]: 1051 mSDtfsCounter, 1801 mSDsluCounter, 2373 mSDsCounter, 0 mSdLazyCounter, 700 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1801 SdHoareTripleChecker+Valid, 3424 SdHoareTripleChecker+Invalid, 756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-12-02 11:25:13,695 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1801 Valid, 3424 Invalid, 756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 700 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-12-02 11:25:13,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1856 states. [2024-12-02 11:25:13,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1856 to 1842. [2024-12-02 11:25:13,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1842 states, 1492 states have (on average 1.665549597855228) internal successors, (2485), 1540 states have internal predecessors, (2485), 271 states have call successors, (271), 78 states have call predecessors, (271), 78 states have return successors, (319), 262 states have call predecessors, (319), 266 states have call successors, (319) [2024-12-02 11:25:13,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1842 states to 1842 states and 3075 transitions. [2024-12-02 11:25:13,769 INFO L78 Accepts]: Start accepts. Automaton has 1842 states and 3075 transitions. Word has length 127 [2024-12-02 11:25:13,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:25:13,769 INFO L471 AbstractCegarLoop]: Abstraction has 1842 states and 3075 transitions. [2024-12-02 11:25:13,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-12-02 11:25:13,769 INFO L276 IsEmpty]: Start isEmpty. Operand 1842 states and 3075 transitions. [2024-12-02 11:25:13,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-12-02 11:25:13,773 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:25:13,773 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:25:13,785 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-12-02 11:25:13,973 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:25:13,974 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:25:13,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:25:13,974 INFO L85 PathProgramCache]: Analyzing trace with hash -949510155, now seen corresponding path program 1 times [2024-12-02 11:25:13,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:25:13,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871691483] [2024-12-02 11:25:13,974 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:25:13,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:25:13,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:25:14,036 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-12-02 11:25:14,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:25:14,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871691483] [2024-12-02 11:25:14,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871691483] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:25:14,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [975716047] [2024-12-02 11:25:14,036 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:25:14,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:25:14,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:25:14,038 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:25:14,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-12-02 11:25:14,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:25:14,290 INFO L256 TraceCheckSpWp]: Trace formula consists of 1385 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-02 11:25:14,292 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:25:14,307 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-12-02 11:25:14,307 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 11:25:14,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [975716047] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:25:14,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 11:25:14,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-12-02 11:25:14,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40684254] [2024-12-02 11:25:14,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:25:14,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 11:25:14,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:25:14,309 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 11:25:14,309 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 11:25:14,309 INFO L87 Difference]: Start difference. First operand 1842 states and 3075 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 11:25:14,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:25:14,399 INFO L93 Difference]: Finished difference Result 3661 states and 6128 transitions. [2024-12-02 11:25:14,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 11:25:14,400 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 127 [2024-12-02 11:25:14,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:25:14,407 INFO L225 Difference]: With dead ends: 3661 [2024-12-02 11:25:14,407 INFO L226 Difference]: Without dead ends: 1807 [2024-12-02 11:25:14,413 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 11:25:14,413 INFO L435 NwaCegarLoop]: 962 mSDtfsCounter, 7 mSDsluCounter, 1916 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2878 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 11:25:14,413 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2878 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 11:25:14,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1807 states. [2024-12-02 11:25:14,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1807 to 1807. [2024-12-02 11:25:14,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1807 states, 1460 states have (on average 1.6554794520547946) internal successors, (2417), 1506 states have internal predecessors, (2417), 270 states have call successors, (270), 78 states have call predecessors, (270), 76 states have return successors, (316), 261 states have call predecessors, (316), 265 states have call successors, (316) [2024-12-02 11:25:14,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1807 states to 1807 states and 3003 transitions. [2024-12-02 11:25:14,474 INFO L78 Accepts]: Start accepts. Automaton has 1807 states and 3003 transitions. Word has length 127 [2024-12-02 11:25:14,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:25:14,474 INFO L471 AbstractCegarLoop]: Abstraction has 1807 states and 3003 transitions. [2024-12-02 11:25:14,475 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 11:25:14,475 INFO L276 IsEmpty]: Start isEmpty. Operand 1807 states and 3003 transitions. [2024-12-02 11:25:14,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-12-02 11:25:14,478 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:25:14,478 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 11:25:14,490 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-12-02 11:25:14,678 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:25:14,679 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:25:14,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:25:14,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1946547836, now seen corresponding path program 1 times [2024-12-02 11:25:14,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:25:14,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253052561] [2024-12-02 11:25:14,679 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:25:14,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:25:14,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:25:14,793 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-12-02 11:25:14,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:25:14,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253052561] [2024-12-02 11:25:14,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253052561] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:25:14,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23258168] [2024-12-02 11:25:14,794 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:25:14,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:25:14,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:25:14,796 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:25:14,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-12-02 11:25:15,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:25:15,053 INFO L256 TraceCheckSpWp]: Trace formula consists of 1383 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-12-02 11:25:15,056 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:25:15,080 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-12-02 11:25:15,080 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 11:25:15,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [23258168] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:25:15,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 11:25:15,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 7 [2024-12-02 11:25:15,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410202290] [2024-12-02 11:25:15,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:25:15,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 11:25:15,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:25:15,081 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 11:25:15,081 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 11:25:15,081 INFO L87 Difference]: Start difference. First operand 1807 states and 3003 transitions. Second operand has 7 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-12-02 11:25:15,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:25:15,184 INFO L93 Difference]: Finished difference Result 3629 states and 6028 transitions. [2024-12-02 11:25:15,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 11:25:15,184 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 128 [2024-12-02 11:25:15,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:25:15,192 INFO L225 Difference]: With dead ends: 3629 [2024-12-02 11:25:15,192 INFO L226 Difference]: Without dead ends: 1839 [2024-12-02 11:25:15,199 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 129 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 11:25:15,199 INFO L435 NwaCegarLoop]: 972 mSDtfsCounter, 122 mSDsluCounter, 4721 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 5693 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 11:25:15,200 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 5693 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 11:25:15,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1839 states. [2024-12-02 11:25:15,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1839 to 1800. [2024-12-02 11:25:15,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1800 states, 1453 states have (on average 1.65244322092223) internal successors, (2401), 1499 states have internal predecessors, (2401), 270 states have call successors, (270), 78 states have call predecessors, (270), 76 states have return successors, (316), 261 states have call predecessors, (316), 265 states have call successors, (316) [2024-12-02 11:25:15,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1800 states to 1800 states and 2987 transitions. [2024-12-02 11:25:15,283 INFO L78 Accepts]: Start accepts. Automaton has 1800 states and 2987 transitions. Word has length 128 [2024-12-02 11:25:15,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:25:15,284 INFO L471 AbstractCegarLoop]: Abstraction has 1800 states and 2987 transitions. [2024-12-02 11:25:15,284 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-12-02 11:25:15,284 INFO L276 IsEmpty]: Start isEmpty. Operand 1800 states and 2987 transitions. [2024-12-02 11:25:15,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-12-02 11:25:15,287 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:25:15,287 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 11:25:15,299 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-12-02 11:25:15,487 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d418877-d185-4315-adcc-e96f6aa3ae0c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:25:15,488 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:25:15,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:25:15,488 INFO L85 PathProgramCache]: Analyzing trace with hash 840282455, now seen corresponding path program 1 times [2024-12-02 11:25:15,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:25:15,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156364715] [2024-12-02 11:25:15,488 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:25:15,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:25:15,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:25:15,647 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-12-02 11:25:15,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:25:15,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156364715] [2024-12-02 11:25:15,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156364715] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:25:15,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:25:15,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 11:25:15,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496724744] [2024-12-02 11:25:15,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:25:15,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 11:25:15,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:25:15,649 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 11:25:15,649 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 11:25:15,649 INFO L87 Difference]: Start difference. First operand 1800 states and 2987 transitions. Second operand has 7 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-12-02 11:25:15,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:25:15,784 INFO L93 Difference]: Finished difference Result 3533 states and 5876 transitions. [2024-12-02 11:25:15,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 11:25:15,785 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 129 [2024-12-02 11:25:15,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:25:15,797 INFO L225 Difference]: With dead ends: 3533 [2024-12-02 11:25:15,797 INFO L226 Difference]: Without dead ends: 1841 [2024-12-02 11:25:15,805 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 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 11:25:15,807 INFO L435 NwaCegarLoop]: 960 mSDtfsCounter, 126 mSDsluCounter, 4677 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 5637 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 11:25:15,807 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 5637 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 11:25:15,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1841 states. [2024-12-02 11:25:15,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1841 to 1800. [2024-12-02 11:25:15,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1800 states, 1453 states have (on average 1.65244322092223) internal successors, (2401), 1499 states have internal predecessors, (2401), 270 states have call successors, (270), 78 states have call predecessors, (270), 76 states have return successors, (316), 261 states have call predecessors, (316), 265 states have call successors, (316) [2024-12-02 11:25:15,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1800 states to 1800 states and 2987 transitions. [2024-12-02 11:25:15,879 INFO L78 Accepts]: Start accepts. Automaton has 1800 states and 2987 transitions. Word has length 129 [2024-12-02 11:25:15,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:25:15,879 INFO L471 AbstractCegarLoop]: Abstraction has 1800 states and 2987 transitions. [2024-12-02 11:25:15,880 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-12-02 11:25:15,880 INFO L276 IsEmpty]: Start isEmpty. Operand 1800 states and 2987 transitions. [2024-12-02 11:25:15,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-12-02 11:25:15,883 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:25:15,884 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 11:25:15,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-12-02 11:25:15,884 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:25:15,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:25:15,884 INFO L85 PathProgramCache]: Analyzing trace with hash 91637367, now seen corresponding path program 1 times [2024-12-02 11:25:15,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:25:15,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650608550] [2024-12-02 11:25:15,885 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:25:15,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:25:15,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:25:15,978 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-12-02 11:25:15,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:25:15,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650608550] [2024-12-02 11:25:15,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650608550] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:25:15,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:25:15,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 11:25:15,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058482868] [2024-12-02 11:25:15,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:25:15,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 11:25:15,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:25:15,979 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 11:25:15,980 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 11:25:15,980 INFO L87 Difference]: Start difference. First operand 1800 states and 2987 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 11:25:16,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:25:16,064 INFO L93 Difference]: Finished difference Result 3555 states and 5917 transitions. [2024-12-02 11:25:16,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 11:25:16,065 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 129 [2024-12-02 11:25:16,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:25:16,076 INFO L225 Difference]: With dead ends: 3555 [2024-12-02 11:25:16,077 INFO L226 Difference]: Without dead ends: 1758 [2024-12-02 11:25:16,084 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 11:25:16,084 INFO L435 NwaCegarLoop]: 961 mSDtfsCounter, 8 mSDsluCounter, 1916 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2877 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 11:25:16,085 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 2877 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 11:25:16,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1758 states. [2024-12-02 11:25:16,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1758 to 1758. [2024-12-02 11:25:16,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1758 states, 1414 states have (on average 1.6463932107496464) internal successors, (2328), 1458 states have internal predecessors, (2328), 269 states have call successors, (269), 78 states have call predecessors, (269), 74 states have return successors, (313), 260 states have call predecessors, (313), 264 states have call successors, (313) [2024-12-02 11:25:16,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1758 states to 1758 states and 2910 transitions. [2024-12-02 11:25:16,167 INFO L78 Accepts]: Start accepts. Automaton has 1758 states and 2910 transitions. Word has length 129 [2024-12-02 11:25:16,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:25:16,168 INFO L471 AbstractCegarLoop]: Abstraction has 1758 states and 2910 transitions. [2024-12-02 11:25:16,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-12-02 11:25:16,168 INFO L276 IsEmpty]: Start isEmpty. Operand 1758 states and 2910 transitions. [2024-12-02 11:25:16,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-12-02 11:25:16,171 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:25:16,171 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 11:25:16,171 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-12-02 11:25:16,171 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:25:16,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:25:16,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1826221808, now seen corresponding path program 1 times [2024-12-02 11:25:16,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:25:16,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155956847] [2024-12-02 11:25:16,172 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:25:16,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:25:16,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:25:16,274 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-12-02 11:25:16,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:25:16,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155956847] [2024-12-02 11:25:16,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155956847] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:25:16,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:25:16,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 11:25:16,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427404780] [2024-12-02 11:25:16,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:25:16,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 11:25:16,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:25:16,275 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 11:25:16,275 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 11:25:16,276 INFO L87 Difference]: Start difference. First operand 1758 states and 2910 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2024-12-02 11:25:16,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:25:16,934 INFO L93 Difference]: Finished difference Result 5072 states and 8628 transitions. [2024-12-02 11:25:16,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 11:25:16,935 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 130 [2024-12-02 11:25:16,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:25:16,952 INFO L225 Difference]: With dead ends: 5072 [2024-12-02 11:25:16,953 INFO L226 Difference]: Without dead ends: 3384 [2024-12-02 11:25:16,960 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 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 11:25:16,961 INFO L435 NwaCegarLoop]: 1878 mSDtfsCounter, 1855 mSDsluCounter, 1476 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1855 SdHoareTripleChecker+Valid, 3354 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 11:25:16,961 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1855 Valid, 3354 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 11:25:16,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3384 states. [2024-12-02 11:25:17,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3384 to 3378. [2024-12-02 11:25:17,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3378 states, 2718 states have (on average 1.6383370125091978) internal successors, (4453), 2804 states have internal predecessors, (4453), 516 states have call successors, (516), 150 states have call predecessors, (516), 143 states have return successors, (658), 501 states have call predecessors, (658), 508 states have call successors, (658) [2024-12-02 11:25:17,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3378 states to 3378 states and 5627 transitions. [2024-12-02 11:25:17,103 INFO L78 Accepts]: Start accepts. Automaton has 3378 states and 5627 transitions. Word has length 130 [2024-12-02 11:25:17,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:25:17,103 INFO L471 AbstractCegarLoop]: Abstraction has 3378 states and 5627 transitions. [2024-12-02 11:25:17,104 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2024-12-02 11:25:17,104 INFO L276 IsEmpty]: Start isEmpty. Operand 3378 states and 5627 transitions. [2024-12-02 11:25:17,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-12-02 11:25:17,108 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:25:17,108 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 11:25:17,109 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-12-02 11:25:17,109 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:25:17,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:25:17,109 INFO L85 PathProgramCache]: Analyzing trace with hash 709165645, now seen corresponding path program 1 times [2024-12-02 11:25:17,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:25:17,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423556103] [2024-12-02 11:25:17,110 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:25:17,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:25:17,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:25:17,299 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-12-02 11:25:17,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:25:17,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423556103] [2024-12-02 11:25:17,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423556103] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:25:17,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:25:17,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 11:25:17,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655284796] [2024-12-02 11:25:17,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:25:17,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 11:25:17,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:25:17,301 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 11:25:17,301 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 11:25:17,301 INFO L87 Difference]: Start difference. First operand 3378 states and 5627 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2024-12-02 11:25:18,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:25:18,191 INFO L93 Difference]: Finished difference Result 9947 states and 17017 transitions. [2024-12-02 11:25:18,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 11:25:18,192 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 131 [2024-12-02 11:25:18,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:25:18,221 INFO L225 Difference]: With dead ends: 9947 [2024-12-02 11:25:18,221 INFO L226 Difference]: Without dead ends: 6639 [2024-12-02 11:25:18,238 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 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 11:25:18,238 INFO L435 NwaCegarLoop]: 1887 mSDtfsCounter, 1864 mSDsluCounter, 1483 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1864 SdHoareTripleChecker+Valid, 3370 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-12-02 11:25:18,239 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1864 Valid, 3370 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-12-02 11:25:18,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6639 states. [2024-12-02 11:25:18,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6639 to 6631. [2024-12-02 11:25:18,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6631 states, 5336 states have (on average 1.6300599700149925) internal successors, (8698), 5506 states have internal predecessors, (8698), 1013 states have call successors, (1013), 294 states have call predecessors, (1013), 281 states have return successors, (1423), 986 states have call predecessors, (1423), 999 states have call successors, (1423) [2024-12-02 11:25:18,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6631 states to 6631 states and 11134 transitions. [2024-12-02 11:25:18,462 INFO L78 Accepts]: Start accepts. Automaton has 6631 states and 11134 transitions. Word has length 131 [2024-12-02 11:25:18,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:25:18,462 INFO L471 AbstractCegarLoop]: Abstraction has 6631 states and 11134 transitions. [2024-12-02 11:25:18,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2024-12-02 11:25:18,462 INFO L276 IsEmpty]: Start isEmpty. Operand 6631 states and 11134 transitions. [2024-12-02 11:25:18,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-12-02 11:25:18,464 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:25:18,464 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:25:18,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-12-02 11:25:18,465 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:25:18,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:25:18,465 INFO L85 PathProgramCache]: Analyzing trace with hash -762537685, now seen corresponding path program 1 times [2024-12-02 11:25:18,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:25:18,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225702365] [2024-12-02 11:25:18,465 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:25:18,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:25:18,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:25:18,549 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-12-02 11:25:18,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:25:18,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225702365] [2024-12-02 11:25:18,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225702365] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:25:18,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:25:18,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 11:25:18,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256397643] [2024-12-02 11:25:18,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:25:18,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 11:25:18,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:25:18,550 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 11:25:18,550 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 11:25:18,551 INFO L87 Difference]: Start difference. First operand 6631 states and 11134 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2024-12-02 11:25:19,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:25:19,600 INFO L93 Difference]: Finished difference Result 19721 states and 34293 transitions. [2024-12-02 11:25:19,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 11:25:19,600 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 132 [2024-12-02 11:25:19,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:25:19,668 INFO L225 Difference]: With dead ends: 19721 [2024-12-02 11:25:19,668 INFO L226 Difference]: Without dead ends: 13160 [2024-12-02 11:25:19,704 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 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 11:25:19,704 INFO L435 NwaCegarLoop]: 1896 mSDtfsCounter, 1873 mSDsluCounter, 1490 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1873 SdHoareTripleChecker+Valid, 3386 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 11:25:19,704 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1873 Valid, 3386 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 11:25:19,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13160 states. [2024-12-02 11:25:20,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13160 to 13152. [2024-12-02 11:25:20,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13152 states, 10584 states have (on average 1.621031746031746) internal successors, (17157), 10922 states have internal predecessors, (17157), 2010 states have call successors, (2010), 582 states have call predecessors, (2010), 557 states have return successors, (3208), 1959 states have call predecessors, (3208), 1984 states have call successors, (3208) [2024-12-02 11:25:20,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13152 states to 13152 states and 22375 transitions. [2024-12-02 11:25:20,375 INFO L78 Accepts]: Start accepts. Automaton has 13152 states and 22375 transitions. Word has length 132 [2024-12-02 11:25:20,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:25:20,376 INFO L471 AbstractCegarLoop]: Abstraction has 13152 states and 22375 transitions. [2024-12-02 11:25:20,376 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2024-12-02 11:25:20,376 INFO L276 IsEmpty]: Start isEmpty. Operand 13152 states and 22375 transitions. [2024-12-02 11:25:20,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-12-02 11:25:20,381 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:25:20,381 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:25:20,381 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-12-02 11:25:20,381 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:25:20,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:25:20,382 INFO L85 PathProgramCache]: Analyzing trace with hash -343401304, now seen corresponding path program 1 times [2024-12-02 11:25:20,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:25:20,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113511660] [2024-12-02 11:25:20,382 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:25:20,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:25:20,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:25:20,550 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-12-02 11:25:20,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:25:20,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113511660] [2024-12-02 11:25:20,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113511660] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:25:20,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:25:20,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 11:25:20,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595747850] [2024-12-02 11:25:20,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:25:20,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 11:25:20,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:25:20,552 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 11:25:20,552 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 11:25:20,552 INFO L87 Difference]: Start difference. First operand 13152 states and 22375 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2024-12-02 11:25:22,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:25:22,221 INFO L93 Difference]: Finished difference Result 39299 states and 70299 transitions. [2024-12-02 11:25:22,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 11:25:22,222 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 133 [2024-12-02 11:25:22,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:25:22,333 INFO L225 Difference]: With dead ends: 39299 [2024-12-02 11:25:22,333 INFO L226 Difference]: Without dead ends: 26217 [2024-12-02 11:25:22,424 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 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 11:25:22,425 INFO L435 NwaCegarLoop]: 1905 mSDtfsCounter, 1882 mSDsluCounter, 1497 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1882 SdHoareTripleChecker+Valid, 3402 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-12-02 11:25:22,425 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1882 Valid, 3402 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-12-02 11:25:22,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26217 states. [2024-12-02 11:25:23,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26217 to 26213. [2024-12-02 11:25:23,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26213 states, 21096 states have (on average 1.611490329920364) internal successors, (33996), 21770 states have internal predecessors, (33996), 4007 states have call successors, (4007), 1158 states have call predecessors, (4007), 1109 states have return successors, (7717), 3908 states have call predecessors, (7717), 3957 states have call successors, (7717) [2024-12-02 11:25:24,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26213 states to 26213 states and 45720 transitions. [2024-12-02 11:25:24,059 INFO L78 Accepts]: Start accepts. Automaton has 26213 states and 45720 transitions. Word has length 133 [2024-12-02 11:25:24,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:25:24,059 INFO L471 AbstractCegarLoop]: Abstraction has 26213 states and 45720 transitions. [2024-12-02 11:25:24,059 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2024-12-02 11:25:24,059 INFO L276 IsEmpty]: Start isEmpty. Operand 26213 states and 45720 transitions. [2024-12-02 11:25:24,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-12-02 11:25:24,063 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:25:24,063 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 11:25:24,063 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-12-02 11:25:24,063 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:25:24,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:25:24,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1437776026, now seen corresponding path program 1 times [2024-12-02 11:25:24,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:25:24,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697740390] [2024-12-02 11:25:24,064 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:25:24,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:25:24,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:25:24,303 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-12-02 11:25:24,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:25:24,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697740390] [2024-12-02 11:25:24,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697740390] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:25:24,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:25:24,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 11:25:24,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569519276] [2024-12-02 11:25:24,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:25:24,305 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 11:25:24,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:25:24,305 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 11:25:24,305 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 11:25:24,305 INFO L87 Difference]: Start difference. First operand 26213 states and 45720 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2024-12-02 11:25:27,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:25:27,448 INFO L93 Difference]: Finished difference Result 78497 states and 148329 transitions. [2024-12-02 11:25:27,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 11:25:27,449 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 134 [2024-12-02 11:25:27,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:25:27,659 INFO L225 Difference]: With dead ends: 78497 [2024-12-02 11:25:27,659 INFO L226 Difference]: Without dead ends: 52354 [2024-12-02 11:25:27,923 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 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 11:25:27,924 INFO L435 NwaCegarLoop]: 1914 mSDtfsCounter, 1891 mSDsluCounter, 1504 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1891 SdHoareTripleChecker+Valid, 3418 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-12-02 11:25:27,924 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1891 Valid, 3418 Invalid, 456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-12-02 11:25:27,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52354 states. [2024-12-02 11:25:30,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52354 to 52350. [2024-12-02 11:25:30,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52350 states, 42132 states have (on average 1.601799107566695) internal successors, (67487), 43478 states have internal predecessors, (67487), 8004 states have call successors, (8004), 2310 states have call predecessors, (8004), 2213 states have return successors, (20338), 7809 states have call predecessors, (20338), 7906 states have call successors, (20338) [2024-12-02 11:25:31,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52350 states to 52350 states and 95829 transitions. [2024-12-02 11:25:31,071 INFO L78 Accepts]: Start accepts. Automaton has 52350 states and 95829 transitions. Word has length 134 [2024-12-02 11:25:31,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:25:31,071 INFO L471 AbstractCegarLoop]: Abstraction has 52350 states and 95829 transitions. [2024-12-02 11:25:31,071 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2024-12-02 11:25:31,072 INFO L276 IsEmpty]: Start isEmpty. Operand 52350 states and 95829 transitions. [2024-12-02 11:25:31,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-12-02 11:25:31,074 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:25:31,074 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 11:25:31,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-12-02 11:25:31,074 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:25:31,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:25:31,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1918856284, now seen corresponding path program 1 times [2024-12-02 11:25:31,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:25:31,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714952914] [2024-12-02 11:25:31,074 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:25:31,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:25:31,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:25:31,198 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-12-02 11:25:31,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:25:31,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714952914] [2024-12-02 11:25:31,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714952914] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:25:31,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:25:31,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 11:25:31,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123079481] [2024-12-02 11:25:31,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:25:31,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 11:25:31,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:25:31,199 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 11:25:31,199 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 11:25:31,200 INFO L87 Difference]: Start difference. First operand 52350 states and 95829 transitions. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2024-12-02 11:25:36,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:25:36,374 INFO L93 Difference]: Finished difference Result 141575 states and 257961 transitions. [2024-12-02 11:25:36,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 11:25:36,375 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 134 [2024-12-02 11:25:36,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:25:36,879 INFO L225 Difference]: With dead ends: 141575 [2024-12-02 11:25:36,879 INFO L226 Difference]: Without dead ends: 89326 [2024-12-02 11:25:37,858 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-12-02 11:25:37,859 INFO L435 NwaCegarLoop]: 1067 mSDtfsCounter, 1107 mSDsluCounter, 5076 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1120 SdHoareTripleChecker+Valid, 6143 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 11:25:37,859 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1120 Valid, 6143 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 11:25:37,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89326 states. [2024-12-02 11:25:41,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89326 to 88138. [2024-12-02 11:25:41,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88138 states, 70939 states have (on average 1.5907046899448822) internal successors, (112843), 72989 states have internal predecessors, (112843), 13286 states have call successors, (13286), 3818 states have call predecessors, (13286), 3912 states have return successors, (32555), 13378 states have call predecessors, (32555), 13155 states have call successors, (32555) [2024-12-02 11:25:42,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88138 states to 88138 states and 158684 transitions. [2024-12-02 11:25:42,914 INFO L78 Accepts]: Start accepts. Automaton has 88138 states and 158684 transitions. Word has length 134 [2024-12-02 11:25:42,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:25:42,915 INFO L471 AbstractCegarLoop]: Abstraction has 88138 states and 158684 transitions. [2024-12-02 11:25:42,915 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2024-12-02 11:25:42,915 INFO L276 IsEmpty]: Start isEmpty. Operand 88138 states and 158684 transitions. [2024-12-02 11:25:42,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-12-02 11:25:42,918 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:25:42,918 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 11:25:42,918 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-12-02 11:25:42,918 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:25:42,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:25:42,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1111766359, now seen corresponding path program 1 times [2024-12-02 11:25:42,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:25:42,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304467783] [2024-12-02 11:25:42,919 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:25:42,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:25:42,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:25:43,040 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-12-02 11:25:43,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:25:43,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304467783] [2024-12-02 11:25:43,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304467783] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:25:43,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:25:43,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 11:25:43,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591101335] [2024-12-02 11:25:43,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:25:43,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 11:25:43,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:25:43,041 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 11:25:43,041 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 11:25:43,041 INFO L87 Difference]: Start difference. First operand 88138 states and 158684 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) [2024-12-02 11:25:48,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:25:48,682 INFO L93 Difference]: Finished difference Result 163926 states and 294400 transitions. [2024-12-02 11:25:48,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 11:25:48,682 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) Word has length 139 [2024-12-02 11:25:48,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:25:49,056 INFO L225 Difference]: With dead ends: 163926 [2024-12-02 11:25:49,056 INFO L226 Difference]: Without dead ends: 89866 [2024-12-02 11:25:49,826 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 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 11:25:49,826 INFO L435 NwaCegarLoop]: 970 mSDtfsCounter, 0 mSDsluCounter, 4818 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5788 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 11:25:49,827 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 5788 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 11:25:49,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89866 states. [2024-12-02 11:25:54,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89866 to 89546. [2024-12-02 11:25:54,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89546 states, 71931 states have (on average 1.5825582850231472) internal successors, (113835), 74013 states have internal predecessors, (113835), 13286 states have call successors, (13286), 3818 states have call predecessors, (13286), 4328 states have return successors, (34507), 13762 states have call predecessors, (34507), 13155 states have call successors, (34507) [2024-12-02 11:25:55,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89546 states to 89546 states and 161628 transitions. [2024-12-02 11:25:55,531 INFO L78 Accepts]: Start accepts. Automaton has 89546 states and 161628 transitions. Word has length 139 [2024-12-02 11:25:55,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:25:55,532 INFO L471 AbstractCegarLoop]: Abstraction has 89546 states and 161628 transitions. [2024-12-02 11:25:55,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) [2024-12-02 11:25:55,532 INFO L276 IsEmpty]: Start isEmpty. Operand 89546 states and 161628 transitions. [2024-12-02 11:25:55,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-12-02 11:25:55,535 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:25:55,535 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 11:25:55,535 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-12-02 11:25:55,535 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:25:55,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:25:55,535 INFO L85 PathProgramCache]: Analyzing trace with hash 181455730, now seen corresponding path program 1 times [2024-12-02 11:25:55,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:25:55,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572073300] [2024-12-02 11:25:55,535 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:25:55,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:25:55,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:25:55,683 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-12-02 11:25:55,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:25:55,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572073300] [2024-12-02 11:25:55,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572073300] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:25:55,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:25:55,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 11:25:55,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820693828] [2024-12-02 11:25:55,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:25:55,684 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 11:25:55,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:25:55,684 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 11:25:55,685 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 11:25:55,685 INFO L87 Difference]: Start difference. First operand 89546 states and 161628 transitions. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 5 states have internal predecessors, (92), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) [2024-12-02 11:26:01,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:26:01,595 INFO L93 Difference]: Finished difference Result 166294 states and 298784 transitions. [2024-12-02 11:26:01,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 11:26:01,596 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 5 states have internal predecessors, (92), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) Word has length 140 [2024-12-02 11:26:01,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:26:01,982 INFO L225 Difference]: With dead ends: 166294 [2024-12-02 11:26:01,982 INFO L226 Difference]: Without dead ends: 90826 [2024-12-02 11:26:02,761 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 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 11:26:02,762 INFO L435 NwaCegarLoop]: 974 mSDtfsCounter, 0 mSDsluCounter, 4833 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5807 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 11:26:02,762 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 5807 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 11:26:02,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90826 states. [2024-12-02 11:26:06,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90826 to 89738. [2024-12-02 11:26:06,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89738 states, 72123 states have (on average 1.5810074456137433) internal successors, (114027), 74013 states have internal predecessors, (114027), 13286 states have call successors, (13286), 3818 states have call predecessors, (13286), 4328 states have return successors, (34507), 13954 states have call predecessors, (34507), 13155 states have call successors, (34507) [2024-12-02 11:26:07,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89738 states to 89738 states and 161820 transitions. [2024-12-02 11:26:07,565 INFO L78 Accepts]: Start accepts. Automaton has 89738 states and 161820 transitions. Word has length 140 [2024-12-02 11:26:07,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:26:07,565 INFO L471 AbstractCegarLoop]: Abstraction has 89738 states and 161820 transitions. [2024-12-02 11:26:07,566 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 5 states have internal predecessors, (92), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 2 states have call successors, (14) [2024-12-02 11:26:07,566 INFO L276 IsEmpty]: Start isEmpty. Operand 89738 states and 161820 transitions. [2024-12-02 11:26:07,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-12-02 11:26:07,570 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:26:07,570 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 11:26:07,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-12-02 11:26:07,570 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:26:07,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:26:07,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1388615408, now seen corresponding path program 1 times [2024-12-02 11:26:07,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:26:07,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903700375] [2024-12-02 11:26:07,571 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:26:07,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:26:07,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:26:07,697 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-12-02 11:26:07,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:26:07,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903700375] [2024-12-02 11:26:07,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903700375] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:26:07,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:26:07,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 11:26:07,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018213630] [2024-12-02 11:26:07,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:26:07,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 11:26:07,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:26:07,698 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 11:26:07,698 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 11:26:07,698 INFO L87 Difference]: Start difference. First operand 89738 states and 161820 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-12-02 11:26:13,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:26:13,052 INFO L93 Difference]: Finished difference Result 165413 states and 295986 transitions. [2024-12-02 11:26:13,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 11:26:13,053 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 140 [2024-12-02 11:26:13,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:26:13,739 INFO L225 Difference]: With dead ends: 165413 [2024-12-02 11:26:13,739 INFO L226 Difference]: Without dead ends: 89753 [2024-12-02 11:26:14,770 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 11:26:14,771 INFO L435 NwaCegarLoop]: 972 mSDtfsCounter, 3 mSDsluCounter, 1935 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2907 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 11:26:14,771 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2907 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 11:26:14,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89753 states. [2024-12-02 11:26:18,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89753 to 89723. [2024-12-02 11:26:18,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89723 states, 72114 states have (on average 1.5809967551376987) internal successors, (114012), 74007 states have internal predecessors, (114012), 13280 states have call successors, (13280), 3818 states have call predecessors, (13280), 4328 states have return successors, (34476), 13945 states have call predecessors, (34476), 13149 states have call successors, (34476) [2024-12-02 11:26:19,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89723 states to 89723 states and 161768 transitions. [2024-12-02 11:26:19,559 INFO L78 Accepts]: Start accepts. Automaton has 89723 states and 161768 transitions. Word has length 140 [2024-12-02 11:26:19,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:26:19,560 INFO L471 AbstractCegarLoop]: Abstraction has 89723 states and 161768 transitions. [2024-12-02 11:26:19,560 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-12-02 11:26:19,560 INFO L276 IsEmpty]: Start isEmpty. Operand 89723 states and 161768 transitions. [2024-12-02 11:26:19,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-12-02 11:26:19,564 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:26:19,564 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 11:26:19,564 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-12-02 11:26:19,564 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:26:19,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:26:19,565 INFO L85 PathProgramCache]: Analyzing trace with hash 159254408, now seen corresponding path program 1 times [2024-12-02 11:26:19,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:26:19,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388428002] [2024-12-02 11:26:19,565 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:26:19,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:26:19,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:26:19,666 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-12-02 11:26:19,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:26:19,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388428002] [2024-12-02 11:26:19,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388428002] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:26:19,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:26:19,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 11:26:19,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144552414] [2024-12-02 11:26:19,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:26:19,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 11:26:19,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:26:19,668 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 11:26:19,668 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 11:26:19,668 INFO L87 Difference]: Start difference. First operand 89723 states and 161768 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2024-12-02 11:26:28,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:26:28,437 INFO L93 Difference]: Finished difference Result 211221 states and 381586 transitions. [2024-12-02 11:26:28,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 11:26:28,437 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 149 [2024-12-02 11:26:28,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:26:29,379 INFO L225 Difference]: With dead ends: 211221 [2024-12-02 11:26:29,379 INFO L226 Difference]: Without dead ends: 135576 [2024-12-02 11:26:30,462 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 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 11:26:30,463 INFO L435 NwaCegarLoop]: 1845 mSDtfsCounter, 1790 mSDsluCounter, 1657 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1790 SdHoareTripleChecker+Valid, 3502 SdHoareTripleChecker+Invalid, 591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-12-02 11:26:30,463 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1790 Valid, 3502 Invalid, 591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-12-02 11:26:30,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135576 states. [2024-12-02 11:26:36,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135576 to 135216. [2024-12-02 11:26:36,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135216 states, 108117 states have (on average 1.563491402832117) internal successors, (169040), 110906 states have internal predecessors, (169040), 20085 states have call successors, (20085), 6218 states have call predecessors, (20085), 7013 states have return successors, (54183), 20971 states have call predecessors, (54183), 19890 states have call successors, (54183) [2024-12-02 11:26:38,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135216 states to 135216 states and 243308 transitions. [2024-12-02 11:26:38,990 INFO L78 Accepts]: Start accepts. Automaton has 135216 states and 243308 transitions. Word has length 149 [2024-12-02 11:26:38,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:26:38,990 INFO L471 AbstractCegarLoop]: Abstraction has 135216 states and 243308 transitions. [2024-12-02 11:26:38,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2024-12-02 11:26:38,991 INFO L276 IsEmpty]: Start isEmpty. Operand 135216 states and 243308 transitions. [2024-12-02 11:26:38,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-12-02 11:26:38,996 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:26:38,996 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 11:26:38,996 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-12-02 11:26:38,996 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:26:38,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:26:38,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1884610381, now seen corresponding path program 1 times [2024-12-02 11:26:38,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:26:38,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914703784] [2024-12-02 11:26:38,997 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:26:38,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:26:39,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:26:39,473 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-12-02 11:26:39,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:26:39,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914703784] [2024-12-02 11:26:39,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914703784] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:26:39,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:26:39,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 11:26:39,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235115592] [2024-12-02 11:26:39,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:26:39,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 11:26:39,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:26:39,474 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 11:26:39,474 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 11:26:39,474 INFO L87 Difference]: Start difference. First operand 135216 states and 243308 transitions. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-02 11:26:48,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:26:48,371 INFO L93 Difference]: Finished difference Result 269722 states and 495239 transitions. [2024-12-02 11:26:48,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 11:26:48,372 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 151 [2024-12-02 11:26:48,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:26:49,287 INFO L225 Difference]: With dead ends: 269722 [2024-12-02 11:26:49,287 INFO L226 Difference]: Without dead ends: 136624 [2024-12-02 11:26:51,216 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 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 11:26:51,217 INFO L435 NwaCegarLoop]: 957 mSDtfsCounter, 5 mSDsluCounter, 3792 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 4749 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 11:26:51,217 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 4749 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 11:26:51,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136624 states. [2024-12-02 11:26:56,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136624 to 136624. [2024-12-02 11:26:56,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136624 states, 109173 states have (on average 1.5574546820184478) internal successors, (170032), 111962 states have internal predecessors, (170032), 20085 states have call successors, (20085), 6570 states have call predecessors, (20085), 7365 states have return successors, (54407), 20971 states have call predecessors, (54407), 19890 states have call successors, (54407) [2024-12-02 11:26:58,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136624 states to 136624 states and 244524 transitions. [2024-12-02 11:26:58,914 INFO L78 Accepts]: Start accepts. Automaton has 136624 states and 244524 transitions. Word has length 151 [2024-12-02 11:26:58,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:26:58,914 INFO L471 AbstractCegarLoop]: Abstraction has 136624 states and 244524 transitions. [2024-12-02 11:26:58,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-02 11:26:58,914 INFO L276 IsEmpty]: Start isEmpty. Operand 136624 states and 244524 transitions. [2024-12-02 11:26:58,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-12-02 11:26:58,917 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:26:58,917 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 11:26:58,918 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-12-02 11:26:58,918 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:26:58,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:26:58,918 INFO L85 PathProgramCache]: Analyzing trace with hash -995380787, now seen corresponding path program 1 times [2024-12-02 11:26:58,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:26:58,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329659299] [2024-12-02 11:26:58,918 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:26:58,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:26:58,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:26:59,392 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-12-02 11:26:59,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:26:59,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329659299] [2024-12-02 11:26:59,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329659299] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:26:59,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:26:59,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 11:26:59,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430032294] [2024-12-02 11:26:59,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:26:59,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 11:26:59,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:26:59,393 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 11:26:59,394 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 11:26:59,394 INFO L87 Difference]: Start difference. First operand 136624 states and 244524 transitions. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 7 states have internal predecessors, (102), 4 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (15), 6 states have call predecessors, (15), 4 states have call successors, (15) [2024-12-02 11:27:21,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:27:21,749 INFO L93 Difference]: Finished difference Result 409528 states and 760724 transitions. [2024-12-02 11:27:21,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 11:27:21,749 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 7 states have internal predecessors, (102), 4 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (15), 6 states have call predecessors, (15), 4 states have call successors, (15) Word has length 152 [2024-12-02 11:27:21,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:27:23,934 INFO L225 Difference]: With dead ends: 409528 [2024-12-02 11:27:23,934 INFO L226 Difference]: Without dead ends: 287046 [2024-12-02 11:27:26,297 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2024-12-02 11:27:26,298 INFO L435 NwaCegarLoop]: 753 mSDtfsCounter, 2990 mSDsluCounter, 2438 mSDsCounter, 0 mSdLazyCounter, 6133 mSolverCounterSat, 823 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3029 SdHoareTripleChecker+Valid, 3191 SdHoareTripleChecker+Invalid, 6956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 823 IncrementalHoareTripleChecker+Valid, 6133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-12-02 11:27:26,298 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3029 Valid, 3191 Invalid, 6956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [823 Valid, 6133 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-12-02 11:27:26,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287046 states.