./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec1_product30.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_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec1_product30.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB --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 b5032f6ecc7a7304ce28757cb2a6aad82a2091f27bc978e38426a37817981d0c --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:22:56,743 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:22:56,842 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 02:22:56,851 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:22:56,851 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:22:56,889 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:22:56,890 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:22:56,890 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:22:56,891 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:22:56,891 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:22:56,892 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:22:56,892 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:22:56,893 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:22:56,893 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:22:56,893 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:22:56,893 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:22:56,894 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:22:56,894 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:22:56,894 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:22:56,894 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:22:56,894 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:22:56,894 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:22:56,894 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:22:56,894 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:22:56,894 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:22:56,894 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:22:56,894 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:22:56,894 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:22:56,894 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:22:56,895 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:22:56,895 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:22:56,895 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:22:56,895 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:22:56,895 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:22:56,895 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:22:56,895 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:22:56,895 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:22:56,895 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:22:56,896 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:22:56,897 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:22:56,897 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:22:56,897 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:22:56,897 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:22:56,897 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:22:56,898 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:22:56,898 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:22:56,898 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:22:56,898 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:22:56,898 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_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB 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 -> b5032f6ecc7a7304ce28757cb2a6aad82a2091f27bc978e38426a37817981d0c [2024-11-28 02:22:57,190 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:22:57,202 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:22:57,207 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:22:57,209 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:22:57,210 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:22:57,212 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/product-lines/elevator_spec1_product30.cil.c [2024-11-28 02:23:00,170 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/data/451da0b7c/5d0c45d31f914378af9cb8321ef13c80/FLAGed7e7ca24 [2024-11-28 02:23:00,570 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:23:00,571 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/sv-benchmarks/c/product-lines/elevator_spec1_product30.cil.c [2024-11-28 02:23:00,592 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/data/451da0b7c/5d0c45d31f914378af9cb8321ef13c80/FLAGed7e7ca24 [2024-11-28 02:23:00,610 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/data/451da0b7c/5d0c45d31f914378af9cb8321ef13c80 [2024-11-28 02:23:00,612 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:23:00,614 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:23:00,617 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:23:00,618 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:23:00,623 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:23:00,623 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:23:00" (1/1) ... [2024-11-28 02:23:00,626 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26f60bea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:23:00, skipping insertion in model container [2024-11-28 02:23:00,626 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:23:00" (1/1) ... [2024-11-28 02:23:00,699 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:23:00,897 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_6517ede1-0c60-4f88-8f41-146d9d8794ff/sv-benchmarks/c/product-lines/elevator_spec1_product30.cil.c[1545,1558] [2024-11-28 02:23:01,335 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:23:01,354 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:23:01,364 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [48] [2024-11-28 02:23:01,366 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [57] [2024-11-28 02:23:01,366 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [159] [2024-11-28 02:23:01,367 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [525] [2024-11-28 02:23:01,367 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [541] [2024-11-28 02:23:01,368 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [579] [2024-11-28 02:23:01,368 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [932] [2024-11-28 02:23:01,368 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [1604] [2024-11-28 02:23:01,369 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1724] [2024-11-28 02:23:01,370 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification1_spec.i","") [3302] [2024-11-28 02:23:01,376 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/sv-benchmarks/c/product-lines/elevator_spec1_product30.cil.c[1545,1558] [2024-11-28 02:23:01,510 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:23:01,547 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:23:01,548 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:23:01 WrapperNode [2024-11-28 02:23:01,548 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:23:01,549 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:23:01,549 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:23:01,549 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:23:01,563 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:23:01" (1/1) ... [2024-11-28 02:23:01,592 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:23:01" (1/1) ... [2024-11-28 02:23:01,649 INFO L138 Inliner]: procedures = 95, calls = 348, calls flagged for inlining = 28, calls inlined = 24, statements flattened = 907 [2024-11-28 02:23:01,649 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:23:01,650 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:23:01,650 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:23:01,650 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:23:01,660 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:23:01" (1/1) ... [2024-11-28 02:23:01,661 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:23:01" (1/1) ... [2024-11-28 02:23:01,673 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:23:01" (1/1) ... [2024-11-28 02:23:01,727 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. The 0 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. [2024-11-28 02:23:01,728 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:23:01" (1/1) ... [2024-11-28 02:23:01,728 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:23:01" (1/1) ... [2024-11-28 02:23:01,757 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:23:01" (1/1) ... [2024-11-28 02:23:01,763 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:23:01" (1/1) ... [2024-11-28 02:23:01,782 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:23:01" (1/1) ... [2024-11-28 02:23:01,795 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:23:01" (1/1) ... [2024-11-28 02:23:01,805 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:23:01" (1/1) ... [2024-11-28 02:23:01,855 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:23:01,856 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:23:01,858 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:23:01,858 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:23:01,860 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:23:01" (1/1) ... [2024-11-28 02:23:01,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:23:01,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:23:01,902 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:23:01,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:23:01,938 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2024-11-28 02:23:01,938 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2024-11-28 02:23:01,939 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:23:01,939 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2024-11-28 02:23:01,939 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2024-11-28 02:23:01,939 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2024-11-28 02:23:01,939 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2024-11-28 02:23:01,939 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-11-28 02:23:01,939 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-11-28 02:23:01,939 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-11-28 02:23:01,939 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-11-28 02:23:01,940 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-11-28 02:23:01,941 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-11-28 02:23:01,941 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2024-11-28 02:23:01,941 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2024-11-28 02:23:01,941 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-28 02:23:01,941 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-28 02:23:01,942 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-28 02:23:01,942 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-28 02:23:01,942 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2024-11-28 02:23:01,942 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2024-11-28 02:23:01,942 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-11-28 02:23:01,942 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-11-28 02:23:01,942 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-11-28 02:23:01,942 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-11-28 02:23:01,942 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-11-28 02:23:01,942 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-11-28 02:23:01,942 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-11-28 02:23:01,942 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-11-28 02:23:01,942 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2024-11-28 02:23:01,942 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2024-11-28 02:23:01,943 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-11-28 02:23:01,943 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-11-28 02:23:01,943 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-11-28 02:23:01,943 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-11-28 02:23:01,943 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-11-28 02:23:01,943 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-11-28 02:23:01,943 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-11-28 02:23:01,943 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-11-28 02:23:01,943 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-11-28 02:23:01,943 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-11-28 02:23:01,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:23:01,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 02:23:01,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 02:23:01,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-28 02:23:01,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-28 02:23:01,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-28 02:23:01,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-28 02:23:01,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-28 02:23:01,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-28 02:23:01,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-28 02:23:01,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-28 02:23:01,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-28 02:23:01,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-28 02:23:01,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-28 02:23:01,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-11-28 02:23:01,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-11-28 02:23:01,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-11-28 02:23:01,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-11-28 02:23:01,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2024-11-28 02:23:01,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2024-11-28 02:23:01,948 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2024-11-28 02:23:01,948 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2024-11-28 02:23:01,948 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-11-28 02:23:01,948 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-11-28 02:23:01,948 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-11-28 02:23:01,948 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-11-28 02:23:01,948 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-11-28 02:23:01,949 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-11-28 02:23:01,949 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull [2024-11-28 02:23:01,949 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull [2024-11-28 02:23:01,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:23:01,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:23:01,949 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-11-28 02:23:01,949 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-11-28 02:23:02,192 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:23:02,195 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:23:03,905 INFO L? ?]: Removed 462 outVars from TransFormulas that were not future-live. [2024-11-28 02:23:03,905 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:23:03,928 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:23:03,928 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 02:23:03,929 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:23:03 BoogieIcfgContainer [2024-11-28 02:23:03,929 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:23:03,931 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:23:03,931 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:23:03,936 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:23:03,936 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:23:00" (1/3) ... [2024-11-28 02:23:03,936 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@142398c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:23:03, skipping insertion in model container [2024-11-28 02:23:03,937 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:23:01" (2/3) ... [2024-11-28 02:23:03,937 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@142398c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:23:03, skipping insertion in model container [2024-11-28 02:23:03,937 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:23:03" (3/3) ... [2024-11-28 02:23:03,938 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product30.cil.c [2024-11-28 02:23:03,954 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:23:03,971 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec1_product30.cil.c that has 27 procedures, 587 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-28 02:23:04,069 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:23:04,085 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;@62b48e2e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:23:04,085 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 02:23:04,093 INFO L276 IsEmpty]: Start isEmpty. Operand has 587 states, 458 states have (on average 1.6899563318777293) internal successors, (774), 481 states have internal predecessors, (774), 101 states have call successors, (101), 26 states have call predecessors, (101), 26 states have return successors, (101), 94 states have call predecessors, (101), 101 states have call successors, (101) [2024-11-28 02:23:04,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-28 02:23:04,114 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:23:04,115 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:23:04,116 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:23:04,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:04,121 INFO L85 PathProgramCache]: Analyzing trace with hash 244447473, now seen corresponding path program 1 times [2024-11-28 02:23:04,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:04,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663358741] [2024-11-28 02:23:04,131 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:04,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:04,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:04,892 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-28 02:23:04,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:04,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663358741] [2024-11-28 02:23:04,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663358741] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:23:04,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084314267] [2024-11-28 02:23:04,894 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:04,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:04,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:23:04,900 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:23:04,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:23:05,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:05,436 INFO L256 TraceCheckSpWp]: Trace formula consists of 1721 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-28 02:23:05,449 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:23:05,478 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-28 02:23:05,478 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:23:05,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1084314267] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:23:05,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:23:05,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 4 [2024-11-28 02:23:05,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007145284] [2024-11-28 02:23:05,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:23:05,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 02:23:05,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:05,512 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 02:23:05,513 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:23:05,516 INFO L87 Difference]: Start difference. First operand has 587 states, 458 states have (on average 1.6899563318777293) internal successors, (774), 481 states have internal predecessors, (774), 101 states have call successors, (101), 26 states have call predecessors, (101), 26 states have return successors, (101), 94 states have call predecessors, (101), 101 states have call successors, (101) Second operand has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-28 02:23:05,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:23:05,621 INFO L93 Difference]: Finished difference Result 608 states and 1006 transitions. [2024-11-28 02:23:05,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 02:23:05,623 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) Word has length 83 [2024-11-28 02:23:05,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:23:05,657 INFO L225 Difference]: With dead ends: 608 [2024-11-28 02:23:05,657 INFO L226 Difference]: Without dead ends: 579 [2024-11-28 02:23:05,661 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:23:05,664 INFO L435 NwaCegarLoop]: 967 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, 967 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 [2024-11-28 02:23:05,664 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 967 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:23:05,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2024-11-28 02:23:05,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 579. [2024-11-28 02:23:05,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579 states, 452 states have (on average 1.6880530973451326) internal successors, (763), 473 states have internal predecessors, (763), 101 states have call successors, (101), 26 states have call predecessors, (101), 25 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2024-11-28 02:23:05,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 960 transitions. [2024-11-28 02:23:05,755 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 960 transitions. Word has length 83 [2024-11-28 02:23:05,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:23:05,756 INFO L471 AbstractCegarLoop]: Abstraction has 579 states and 960 transitions. [2024-11-28 02:23:05,756 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-28 02:23:05,757 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 960 transitions. [2024-11-28 02:23:05,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-28 02:23:05,767 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:23:05,767 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:23:05,779 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 02:23:05,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-28 02:23:05,968 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:23:05,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:05,969 INFO L85 PathProgramCache]: Analyzing trace with hash 2041499455, now seen corresponding path program 1 times [2024-11-28 02:23:05,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:05,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684245588] [2024-11-28 02:23:05,969 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:05,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:06,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:06,258 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-28 02:23:06,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:06,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684245588] [2024-11-28 02:23:06,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684245588] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:23:06,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1789256748] [2024-11-28 02:23:06,258 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:06,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:06,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:23:06,263 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:23:06,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 02:23:06,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:06,766 INFO L256 TraceCheckSpWp]: Trace formula consists of 1723 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:23:06,771 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:23:06,833 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-28 02:23:06,833 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:23:06,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1789256748] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:23:06,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:23:06,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-28 02:23:06,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640002482] [2024-11-28 02:23:06,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:23:06,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:23:06,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:06,836 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:23:06,836 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:23:06,837 INFO L87 Difference]: Start difference. First operand 579 states and 960 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-28 02:23:06,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:23:06,973 INFO L93 Difference]: Finished difference Result 1149 states and 1912 transitions. [2024-11-28 02:23:06,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:23:06,975 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 84 [2024-11-28 02:23:06,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:23:06,985 INFO L225 Difference]: With dead ends: 1149 [2024-11-28 02:23:06,985 INFO L226 Difference]: Without dead ends: 579 [2024-11-28 02:23:06,991 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:23:06,994 INFO L435 NwaCegarLoop]: 948 mSDtfsCounter, 5 mSDsluCounter, 1890 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2838 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:23:06,996 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2838 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:23:06,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2024-11-28 02:23:07,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 579. [2024-11-28 02:23:07,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579 states, 452 states have (on average 1.6858407079646018) internal successors, (762), 473 states have internal predecessors, (762), 101 states have call successors, (101), 26 states have call predecessors, (101), 25 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2024-11-28 02:23:07,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 959 transitions. [2024-11-28 02:23:07,063 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 959 transitions. Word has length 84 [2024-11-28 02:23:07,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:23:07,066 INFO L471 AbstractCegarLoop]: Abstraction has 579 states and 959 transitions. [2024-11-28 02:23:07,066 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-28 02:23:07,066 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 959 transitions. [2024-11-28 02:23:07,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-28 02:23:07,071 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:23:07,071 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] [2024-11-28 02:23:07,083 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 02:23:07,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:07,275 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:23:07,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:07,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1458489575, now seen corresponding path program 1 times [2024-11-28 02:23:07,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:07,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509563501] [2024-11-28 02:23:07,280 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:07,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:07,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:07,565 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-28 02:23:07,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:07,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509563501] [2024-11-28 02:23:07,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509563501] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:23:07,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1806635666] [2024-11-28 02:23:07,566 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:07,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:07,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:23:07,570 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:23:07,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 02:23:07,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:08,000 INFO L256 TraceCheckSpWp]: Trace formula consists of 1725 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:23:08,009 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:23:08,050 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-28 02:23:08,053 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:23:08,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1806635666] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:23:08,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:23:08,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-28 02:23:08,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619129831] [2024-11-28 02:23:08,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:23:08,054 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:23:08,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:08,055 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:23:08,056 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:23:08,056 INFO L87 Difference]: Start difference. First operand 579 states and 959 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-28 02:23:08,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:23:08,161 INFO L93 Difference]: Finished difference Result 1149 states and 1910 transitions. [2024-11-28 02:23:08,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:23:08,162 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 86 [2024-11-28 02:23:08,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:23:08,171 INFO L225 Difference]: With dead ends: 1149 [2024-11-28 02:23:08,172 INFO L226 Difference]: Without dead ends: 579 [2024-11-28 02:23:08,175 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:23:08,175 INFO L435 NwaCegarLoop]: 948 mSDtfsCounter, 4 mSDsluCounter, 1890 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2838 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:23:08,177 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2838 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:23:08,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2024-11-28 02:23:08,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 579. [2024-11-28 02:23:08,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579 states, 452 states have (on average 1.6836283185840708) internal successors, (761), 473 states have internal predecessors, (761), 101 states have call successors, (101), 26 states have call predecessors, (101), 25 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2024-11-28 02:23:08,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 958 transitions. [2024-11-28 02:23:08,246 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 958 transitions. Word has length 86 [2024-11-28 02:23:08,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:23:08,247 INFO L471 AbstractCegarLoop]: Abstraction has 579 states and 958 transitions. [2024-11-28 02:23:08,247 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-28 02:23:08,247 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 958 transitions. [2024-11-28 02:23:08,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-28 02:23:08,250 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:23:08,251 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] [2024-11-28 02:23:08,263 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 02:23:08,451 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:08,452 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:23:08,452 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:08,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1758967359, now seen corresponding path program 1 times [2024-11-28 02:23:08,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:08,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397356047] [2024-11-28 02:23:08,453 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:08,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:08,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:08,669 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-28 02:23:08,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:08,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397356047] [2024-11-28 02:23:08,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397356047] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:23:08,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110381385] [2024-11-28 02:23:08,674 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:08,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:08,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:23:08,678 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:23:08,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 02:23:09,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:09,121 INFO L256 TraceCheckSpWp]: Trace formula consists of 1727 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:23:09,125 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:23:09,155 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-28 02:23:09,156 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:23:09,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110381385] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:23:09,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:23:09,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-28 02:23:09,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171534358] [2024-11-28 02:23:09,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:23:09,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:23:09,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:09,157 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:23:09,157 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:23:09,157 INFO L87 Difference]: Start difference. First operand 579 states and 958 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-28 02:23:09,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:23:09,278 INFO L93 Difference]: Finished difference Result 1156 states and 1917 transitions. [2024-11-28 02:23:09,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:23:09,279 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 88 [2024-11-28 02:23:09,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:23:09,286 INFO L225 Difference]: With dead ends: 1156 [2024-11-28 02:23:09,287 INFO L226 Difference]: Without dead ends: 588 [2024-11-28 02:23:09,290 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:23:09,292 INFO L435 NwaCegarLoop]: 947 mSDtfsCounter, 13 mSDsluCounter, 1888 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2835 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:23:09,293 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2835 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:23:09,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2024-11-28 02:23:09,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 588. [2024-11-28 02:23:09,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588 states, 460 states have (on average 1.6804347826086956) internal successors, (773), 481 states have internal predecessors, (773), 101 states have call successors, (101), 27 states have call predecessors, (101), 26 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2024-11-28 02:23:09,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 970 transitions. [2024-11-28 02:23:09,343 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 970 transitions. Word has length 88 [2024-11-28 02:23:09,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:23:09,343 INFO L471 AbstractCegarLoop]: Abstraction has 588 states and 970 transitions. [2024-11-28 02:23:09,343 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-28 02:23:09,344 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 970 transitions. [2024-11-28 02:23:09,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-28 02:23:09,348 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:23:09,348 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] [2024-11-28 02:23:09,360 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 02:23:09,549 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:09,549 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:23:09,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:09,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1216304377, now seen corresponding path program 1 times [2024-11-28 02:23:09,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:09,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080214607] [2024-11-28 02:23:09,550 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:09,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:09,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:09,771 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-28 02:23:09,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:09,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080214607] [2024-11-28 02:23:09,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080214607] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:23:09,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473393097] [2024-11-28 02:23:09,772 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:09,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:09,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:23:09,774 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:23:09,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 02:23:10,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:10,198 INFO L256 TraceCheckSpWp]: Trace formula consists of 1728 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:23:10,202 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:23:10,238 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-28 02:23:10,238 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:23:10,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1473393097] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:23:10,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:23:10,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-28 02:23:10,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341471799] [2024-11-28 02:23:10,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:23:10,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:23:10,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:10,241 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:23:10,242 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:23:10,243 INFO L87 Difference]: Start difference. First operand 588 states and 970 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-28 02:23:10,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:23:10,343 INFO L93 Difference]: Finished difference Result 1158 states and 1918 transitions. [2024-11-28 02:23:10,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:23:10,343 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 89 [2024-11-28 02:23:10,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:23:10,350 INFO L225 Difference]: With dead ends: 1158 [2024-11-28 02:23:10,350 INFO L226 Difference]: Without dead ends: 588 [2024-11-28 02:23:10,354 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:23:10,354 INFO L435 NwaCegarLoop]: 947 mSDtfsCounter, 11 mSDsluCounter, 1888 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2835 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:23:10,355 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2835 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:23:10,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2024-11-28 02:23:10,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 588. [2024-11-28 02:23:10,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588 states, 460 states have (on average 1.6782608695652175) internal successors, (772), 481 states have internal predecessors, (772), 101 states have call successors, (101), 27 states have call predecessors, (101), 26 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2024-11-28 02:23:10,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 969 transitions. [2024-11-28 02:23:10,386 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 969 transitions. Word has length 89 [2024-11-28 02:23:10,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:23:10,387 INFO L471 AbstractCegarLoop]: Abstraction has 588 states and 969 transitions. [2024-11-28 02:23:10,387 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-28 02:23:10,387 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 969 transitions. [2024-11-28 02:23:10,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-28 02:23:10,390 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:23:10,390 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] [2024-11-28 02:23:10,402 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 02:23:10,591 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:10,591 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:23:10,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:10,594 INFO L85 PathProgramCache]: Analyzing trace with hash -946900485, now seen corresponding path program 1 times [2024-11-28 02:23:10,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:10,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055406761] [2024-11-28 02:23:10,595 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:10,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:10,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:10,759 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-28 02:23:10,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:10,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055406761] [2024-11-28 02:23:10,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055406761] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:23:10,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579152482] [2024-11-28 02:23:10,760 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:10,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:10,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:23:10,762 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:23:10,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 02:23:11,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:11,153 INFO L256 TraceCheckSpWp]: Trace formula consists of 1729 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:23:11,157 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:23:11,188 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-28 02:23:11,189 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:23:11,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [579152482] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:23:11,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:23:11,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-28 02:23:11,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909569007] [2024-11-28 02:23:11,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:23:11,190 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:23:11,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:11,190 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:23:11,191 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:23:11,191 INFO L87 Difference]: Start difference. First operand 588 states and 969 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-28 02:23:11,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:23:11,276 INFO L93 Difference]: Finished difference Result 1158 states and 1917 transitions. [2024-11-28 02:23:11,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:23:11,277 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 90 [2024-11-28 02:23:11,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:23:11,282 INFO L225 Difference]: With dead ends: 1158 [2024-11-28 02:23:11,283 INFO L226 Difference]: Without dead ends: 588 [2024-11-28 02:23:11,285 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:23:11,286 INFO L435 NwaCegarLoop]: 947 mSDtfsCounter, 10 mSDsluCounter, 1888 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2835 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:23:11,287 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2835 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:23:11,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2024-11-28 02:23:11,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 588. [2024-11-28 02:23:11,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588 states, 460 states have (on average 1.6760869565217391) internal successors, (771), 481 states have internal predecessors, (771), 101 states have call successors, (101), 27 states have call predecessors, (101), 26 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2024-11-28 02:23:11,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 968 transitions. [2024-11-28 02:23:11,313 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 968 transitions. Word has length 90 [2024-11-28 02:23:11,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:23:11,313 INFO L471 AbstractCegarLoop]: Abstraction has 588 states and 968 transitions. [2024-11-28 02:23:11,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-28 02:23:11,313 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 968 transitions. [2024-11-28 02:23:11,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-28 02:23:11,315 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:23:11,315 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] [2024-11-28 02:23:11,327 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-28 02:23:11,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-28 02:23:11,516 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:23:11,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:11,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1807296075, now seen corresponding path program 1 times [2024-11-28 02:23:11,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:11,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82707010] [2024-11-28 02:23:11,517 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:11,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:11,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:11,781 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 02:23:11,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:11,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82707010] [2024-11-28 02:23:11,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82707010] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:23:11,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [568659686] [2024-11-28 02:23:11,782 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:11,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:11,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:23:11,785 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:23:11,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 02:23:12,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:12,162 INFO L256 TraceCheckSpWp]: Trace formula consists of 1730 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 02:23:12,166 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:23:12,249 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:12,249 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:23:12,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [568659686] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:23:12,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:23:12,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2024-11-28 02:23:12,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558950587] [2024-11-28 02:23:12,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:23:12,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:23:12,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:12,250 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:23:12,252 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-28 02:23:12,253 INFO L87 Difference]: Start difference. First operand 588 states and 968 transitions. Second operand has 7 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-28 02:23:12,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:23:12,395 INFO L93 Difference]: Finished difference Result 1177 states and 1947 transitions. [2024-11-28 02:23:12,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:23:12,396 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 91 [2024-11-28 02:23:12,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:23:12,402 INFO L225 Difference]: With dead ends: 1177 [2024-11-28 02:23:12,402 INFO L226 Difference]: Without dead ends: 611 [2024-11-28 02:23:12,405 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-28 02:23:12,405 INFO L435 NwaCegarLoop]: 948 mSDtfsCounter, 100 mSDsluCounter, 4654 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 5602 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:23:12,406 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 5602 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:23:12,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2024-11-28 02:23:12,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 607. [2024-11-28 02:23:12,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607 states, 476 states have (on average 1.6743697478991597) internal successors, (797), 499 states have internal predecessors, (797), 102 states have call successors, (102), 27 states have call predecessors, (102), 28 states have return successors, (100), 94 states have call predecessors, (100), 97 states have call successors, (100) [2024-11-28 02:23:12,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 999 transitions. [2024-11-28 02:23:12,440 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 999 transitions. Word has length 91 [2024-11-28 02:23:12,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:23:12,440 INFO L471 AbstractCegarLoop]: Abstraction has 607 states and 999 transitions. [2024-11-28 02:23:12,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-28 02:23:12,441 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 999 transitions. [2024-11-28 02:23:12,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-28 02:23:12,443 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:23:12,444 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] [2024-11-28 02:23:12,455 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-28 02:23:12,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-28 02:23:12,649 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:23:12,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:12,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1363684652, now seen corresponding path program 1 times [2024-11-28 02:23:12,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:12,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964318464] [2024-11-28 02:23:12,650 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:12,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:12,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:12,795 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-28 02:23:12,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:12,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964318464] [2024-11-28 02:23:12,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964318464] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:23:12,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1435288137] [2024-11-28 02:23:12,796 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:12,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:12,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:23:12,798 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:23:12,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 02:23:13,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:13,208 INFO L256 TraceCheckSpWp]: Trace formula consists of 1729 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:23:13,211 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:23:13,246 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:13,246 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:23:13,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1435288137] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:23:13,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:23:13,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-28 02:23:13,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207806123] [2024-11-28 02:23:13,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:23:13,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:23:13,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:13,249 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:23:13,249 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:23:13,251 INFO L87 Difference]: Start difference. First operand 607 states and 999 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-28 02:23:13,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:23:13,433 INFO L93 Difference]: Finished difference Result 1233 states and 2048 transitions. [2024-11-28 02:23:13,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:23:13,434 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 91 [2024-11-28 02:23:13,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:23:13,440 INFO L225 Difference]: With dead ends: 1233 [2024-11-28 02:23:13,440 INFO L226 Difference]: Without dead ends: 622 [2024-11-28 02:23:13,443 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:23:13,443 INFO L435 NwaCegarLoop]: 922 mSDtfsCounter, 76 mSDsluCounter, 1804 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 2726 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:23:13,444 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 2726 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:23:13,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2024-11-28 02:23:13,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 607. [2024-11-28 02:23:13,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607 states, 476 states have (on average 1.6638655462184875) internal successors, (792), 499 states have internal predecessors, (792), 102 states have call successors, (102), 27 states have call predecessors, (102), 28 states have return successors, (100), 94 states have call predecessors, (100), 97 states have call successors, (100) [2024-11-28 02:23:13,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 994 transitions. [2024-11-28 02:23:13,474 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 994 transitions. Word has length 91 [2024-11-28 02:23:13,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:23:13,474 INFO L471 AbstractCegarLoop]: Abstraction has 607 states and 994 transitions. [2024-11-28 02:23:13,475 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-28 02:23:13,475 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 994 transitions. [2024-11-28 02:23:13,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-28 02:23:13,477 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:23:13,477 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] [2024-11-28 02:23:13,488 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-28 02:23:13,677 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:13,678 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:23:13,678 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:13,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1449801150, now seen corresponding path program 1 times [2024-11-28 02:23:13,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:13,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856795112] [2024-11-28 02:23:13,679 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:13,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:13,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:13,819 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-28 02:23:13,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:13,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856795112] [2024-11-28 02:23:13,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856795112] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:23:13,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835284373] [2024-11-28 02:23:13,820 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:13,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:13,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:23:13,822 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:23:13,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 02:23:14,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:14,199 INFO L256 TraceCheckSpWp]: Trace formula consists of 1731 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:23:14,206 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:23:14,250 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:14,250 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:23:14,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1835284373] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:23:14,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:23:14,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-28 02:23:14,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904510014] [2024-11-28 02:23:14,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:23:14,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:23:14,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:14,252 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:23:14,252 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:23:14,252 INFO L87 Difference]: Start difference. First operand 607 states and 994 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, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-28 02:23:14,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:23:14,422 INFO L93 Difference]: Finished difference Result 1233 states and 2038 transitions. [2024-11-28 02:23:14,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:23:14,423 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, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 93 [2024-11-28 02:23:14,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:23:14,430 INFO L225 Difference]: With dead ends: 1233 [2024-11-28 02:23:14,430 INFO L226 Difference]: Without dead ends: 622 [2024-11-28 02:23:14,433 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:23:14,434 INFO L435 NwaCegarLoop]: 922 mSDtfsCounter, 75 mSDsluCounter, 1804 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 2726 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:23:14,435 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 2726 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:23:14,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2024-11-28 02:23:14,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 607. [2024-11-28 02:23:14,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607 states, 476 states have (on average 1.653361344537815) internal successors, (787), 499 states have internal predecessors, (787), 102 states have call successors, (102), 27 states have call predecessors, (102), 28 states have return successors, (100), 94 states have call predecessors, (100), 97 states have call successors, (100) [2024-11-28 02:23:14,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 989 transitions. [2024-11-28 02:23:14,470 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 989 transitions. Word has length 93 [2024-11-28 02:23:14,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:23:14,473 INFO L471 AbstractCegarLoop]: Abstraction has 607 states and 989 transitions. [2024-11-28 02:23:14,473 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, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-28 02:23:14,473 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 989 transitions. [2024-11-28 02:23:14,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-28 02:23:14,475 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:23:14,475 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] [2024-11-28 02:23:14,487 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 02:23:14,676 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-28 02:23:14,676 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:23:14,677 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:14,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1935007860, now seen corresponding path program 1 times [2024-11-28 02:23:14,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:14,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127989069] [2024-11-28 02:23:14,677 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:14,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:14,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:14,818 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-28 02:23:14,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:14,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127989069] [2024-11-28 02:23:14,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127989069] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:23:14,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245354498] [2024-11-28 02:23:14,819 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:14,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:14,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:23:14,821 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:23:14,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 02:23:15,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:15,209 INFO L256 TraceCheckSpWp]: Trace formula consists of 1733 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:23:15,215 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:23:15,258 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:15,258 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:23:15,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [245354498] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:23:15,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:23:15,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-28 02:23:15,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723758266] [2024-11-28 02:23:15,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:23:15,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:23:15,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:15,260 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:23:15,260 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:23:15,260 INFO L87 Difference]: Start difference. First operand 607 states and 989 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-28 02:23:15,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:23:15,505 INFO L93 Difference]: Finished difference Result 1284 states and 2110 transitions. [2024-11-28 02:23:15,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:23:15,506 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 95 [2024-11-28 02:23:15,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:23:15,513 INFO L225 Difference]: With dead ends: 1284 [2024-11-28 02:23:15,513 INFO L226 Difference]: Without dead ends: 703 [2024-11-28 02:23:15,516 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:23:15,517 INFO L435 NwaCegarLoop]: 955 mSDtfsCounter, 130 mSDsluCounter, 1802 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 2757 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:23:15,518 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 2757 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:23:15,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2024-11-28 02:23:15,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 658. [2024-11-28 02:23:15,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 658 states, 526 states have (on average 1.6577946768060836) internal successors, (872), 549 states have internal predecessors, (872), 102 states have call successors, (102), 28 states have call predecessors, (102), 29 states have return successors, (99), 94 states have call predecessors, (99), 97 states have call successors, (99) [2024-11-28 02:23:15,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 1073 transitions. [2024-11-28 02:23:15,550 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 1073 transitions. Word has length 95 [2024-11-28 02:23:15,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:23:15,551 INFO L471 AbstractCegarLoop]: Abstraction has 658 states and 1073 transitions. [2024-11-28 02:23:15,551 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-28 02:23:15,551 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 1073 transitions. [2024-11-28 02:23:15,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-28 02:23:15,553 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:23:15,553 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 02:23:15,565 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-28 02:23:15,754 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-28 02:23:15,754 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:23:15,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:15,755 INFO L85 PathProgramCache]: Analyzing trace with hash -248268668, now seen corresponding path program 1 times [2024-11-28 02:23:15,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:15,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868103518] [2024-11-28 02:23:15,755 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:15,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:15,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:15,952 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 02:23:15,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:15,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868103518] [2024-11-28 02:23:15,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868103518] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:23:15,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152289238] [2024-11-28 02:23:15,952 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:15,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:15,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:23:15,955 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:23:15,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 02:23:16,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:16,325 INFO L256 TraceCheckSpWp]: Trace formula consists of 1731 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 02:23:16,330 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:23:16,429 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:16,429 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:23:16,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [152289238] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:23:16,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:23:16,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2024-11-28 02:23:16,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49472137] [2024-11-28 02:23:16,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:23:16,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 02:23:16,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:16,430 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 02:23:16,431 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-11-28 02:23:16,431 INFO L87 Difference]: Start difference. First operand 658 states and 1073 transitions. Second operand has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-28 02:23:16,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:23:16,617 INFO L93 Difference]: Finished difference Result 1246 states and 2039 transitions. [2024-11-28 02:23:16,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 02:23:16,618 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 96 [2024-11-28 02:23:16,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:23:16,624 INFO L225 Difference]: With dead ends: 1246 [2024-11-28 02:23:16,624 INFO L226 Difference]: Without dead ends: 680 [2024-11-28 02:23:16,627 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-11-28 02:23:16,628 INFO L435 NwaCegarLoop]: 928 mSDtfsCounter, 113 mSDsluCounter, 5479 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 6407 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:23:16,628 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 6407 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:23:16,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2024-11-28 02:23:16,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 658. [2024-11-28 02:23:16,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 658 states, 526 states have (on average 1.6577946768060836) internal successors, (872), 549 states have internal predecessors, (872), 102 states have call successors, (102), 28 states have call predecessors, (102), 29 states have return successors, (99), 94 states have call predecessors, (99), 97 states have call successors, (99) [2024-11-28 02:23:16,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 1073 transitions. [2024-11-28 02:23:16,661 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 1073 transitions. Word has length 96 [2024-11-28 02:23:16,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:23:16,661 INFO L471 AbstractCegarLoop]: Abstraction has 658 states and 1073 transitions. [2024-11-28 02:23:16,661 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-28 02:23:16,661 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 1073 transitions. [2024-11-28 02:23:16,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-28 02:23:16,664 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:23:16,664 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] [2024-11-28 02:23:16,676 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-28 02:23:16,865 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:16,865 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:23:16,865 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:16,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1881708700, now seen corresponding path program 1 times [2024-11-28 02:23:16,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:16,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019180893] [2024-11-28 02:23:16,866 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:16,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:16,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:17,018 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-28 02:23:17,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:17,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019180893] [2024-11-28 02:23:17,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019180893] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:23:17,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1157785091] [2024-11-28 02:23:17,019 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:17,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:17,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:23:17,022 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:23:17,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 02:23:17,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:17,447 INFO L256 TraceCheckSpWp]: Trace formula consists of 1734 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:23:17,452 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:23:17,493 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:17,493 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:23:17,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1157785091] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:23:17,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:23:17,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-28 02:23:17,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347319940] [2024-11-28 02:23:17,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:23:17,494 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:23:17,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:17,494 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:23:17,494 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:23:17,495 INFO L87 Difference]: Start difference. First operand 658 states and 1073 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-28 02:23:17,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:23:17,724 INFO L93 Difference]: Finished difference Result 1287 states and 2111 transitions. [2024-11-28 02:23:17,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:23:17,725 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 96 [2024-11-28 02:23:17,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:23:17,731 INFO L225 Difference]: With dead ends: 1287 [2024-11-28 02:23:17,731 INFO L226 Difference]: Without dead ends: 691 [2024-11-28 02:23:17,734 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:23:17,735 INFO L435 NwaCegarLoop]: 954 mSDtfsCounter, 124 mSDsluCounter, 1776 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 2730 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:23:17,735 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 2730 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:23:17,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2024-11-28 02:23:17,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 658. [2024-11-28 02:23:17,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 658 states, 526 states have (on average 1.6482889733840305) internal successors, (867), 549 states have internal predecessors, (867), 102 states have call successors, (102), 28 states have call predecessors, (102), 29 states have return successors, (99), 94 states have call predecessors, (99), 97 states have call successors, (99) [2024-11-28 02:23:17,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 1068 transitions. [2024-11-28 02:23:17,764 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 1068 transitions. Word has length 96 [2024-11-28 02:23:17,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:23:17,765 INFO L471 AbstractCegarLoop]: Abstraction has 658 states and 1068 transitions. [2024-11-28 02:23:17,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-28 02:23:17,765 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 1068 transitions. [2024-11-28 02:23:17,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-28 02:23:17,767 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:23:17,767 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 02:23:17,778 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-28 02:23:17,968 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:17,968 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:23:17,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:17,969 INFO L85 PathProgramCache]: Analyzing trace with hash -128148795, now seen corresponding path program 1 times [2024-11-28 02:23:17,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:17,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840588920] [2024-11-28 02:23:17,969 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:17,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:17,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:18,077 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-28 02:23:18,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:18,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840588920] [2024-11-28 02:23:18,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840588920] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:23:18,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [254336144] [2024-11-28 02:23:18,077 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:18,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:18,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:23:18,080 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:23:18,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 02:23:18,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:18,478 INFO L256 TraceCheckSpWp]: Trace formula consists of 1730 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 02:23:18,482 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:23:18,555 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 02:23:18,555 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:23:18,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [254336144] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:23:18,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:23:18,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2024-11-28 02:23:18,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944176799] [2024-11-28 02:23:18,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:23:18,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:23:18,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:18,558 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:23:18,558 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:23:18,558 INFO L87 Difference]: Start difference. First operand 658 states and 1068 transitions. Second operand has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-28 02:23:18,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:23:18,687 INFO L93 Difference]: Finished difference Result 1181 states and 1931 transitions. [2024-11-28 02:23:18,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:23:18,688 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 96 [2024-11-28 02:23:18,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:23:18,695 INFO L225 Difference]: With dead ends: 1181 [2024-11-28 02:23:18,695 INFO L226 Difference]: Without dead ends: 682 [2024-11-28 02:23:18,698 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:23:18,699 INFO L435 NwaCegarLoop]: 941 mSDtfsCounter, 86 mSDsluCounter, 4626 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 5567 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:23:18,699 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 5567 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:23:18,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2024-11-28 02:23:18,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 677. [2024-11-28 02:23:18,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 677 states, 542 states have (on average 1.6476014760147601) internal successors, (893), 567 states have internal predecessors, (893), 103 states have call successors, (103), 28 states have call predecessors, (103), 31 states have return successors, (102), 95 states have call predecessors, (102), 98 states have call successors, (102) [2024-11-28 02:23:18,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 1098 transitions. [2024-11-28 02:23:18,734 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 1098 transitions. Word has length 96 [2024-11-28 02:23:18,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:23:18,734 INFO L471 AbstractCegarLoop]: Abstraction has 677 states and 1098 transitions. [2024-11-28 02:23:18,734 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-28 02:23:18,734 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 1098 transitions. [2024-11-28 02:23:18,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-28 02:23:18,737 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:23:18,737 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:23:18,748 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-28 02:23:18,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:18,938 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:23:18,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:18,938 INFO L85 PathProgramCache]: Analyzing trace with hash 674640882, now seen corresponding path program 1 times [2024-11-28 02:23:18,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:18,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622989538] [2024-11-28 02:23:18,939 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:18,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:18,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:19,043 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-28 02:23:19,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:19,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622989538] [2024-11-28 02:23:19,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622989538] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:23:19,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [624515993] [2024-11-28 02:23:19,044 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:19,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:19,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:23:19,048 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:23:19,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-28 02:23:19,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:19,418 INFO L256 TraceCheckSpWp]: Trace formula consists of 1731 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 02:23:19,422 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:23:19,494 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 02:23:19,494 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:23:19,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [624515993] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:23:19,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:23:19,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2024-11-28 02:23:19,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540678840] [2024-11-28 02:23:19,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:23:19,495 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:23:19,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:19,496 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:23:19,496 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:23:19,496 INFO L87 Difference]: Start difference. First operand 677 states and 1098 transitions. Second operand has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-28 02:23:19,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:23:19,617 INFO L93 Difference]: Finished difference Result 1211 states and 1982 transitions. [2024-11-28 02:23:19,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:23:19,618 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 97 [2024-11-28 02:23:19,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:23:19,623 INFO L225 Difference]: With dead ends: 1211 [2024-11-28 02:23:19,624 INFO L226 Difference]: Without dead ends: 712 [2024-11-28 02:23:19,627 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:23:19,628 INFO L435 NwaCegarLoop]: 941 mSDtfsCounter, 95 mSDsluCounter, 4616 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 5557 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:23:19,628 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 5557 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:23:19,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2024-11-28 02:23:19,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 677. [2024-11-28 02:23:19,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 677 states, 542 states have (on average 1.6476014760147601) internal successors, (893), 567 states have internal predecessors, (893), 103 states have call successors, (103), 28 states have call predecessors, (103), 31 states have return successors, (102), 95 states have call predecessors, (102), 98 states have call successors, (102) [2024-11-28 02:23:19,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 1098 transitions. [2024-11-28 02:23:19,680 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 1098 transitions. Word has length 97 [2024-11-28 02:23:19,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:23:19,680 INFO L471 AbstractCegarLoop]: Abstraction has 677 states and 1098 transitions. [2024-11-28 02:23:19,681 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-28 02:23:19,681 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 1098 transitions. [2024-11-28 02:23:19,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-28 02:23:19,683 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:23:19,683 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] [2024-11-28 02:23:19,694 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-28 02:23:19,883 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-28 02:23:19,884 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:23:19,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:19,885 INFO L85 PathProgramCache]: Analyzing trace with hash -2102040718, now seen corresponding path program 1 times [2024-11-28 02:23:19,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:19,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891811337] [2024-11-28 02:23:19,885 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:19,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:19,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:19,990 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-28 02:23:19,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:19,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891811337] [2024-11-28 02:23:19,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891811337] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:23:19,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1368039559] [2024-11-28 02:23:19,991 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:19,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:19,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:23:19,993 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:23:19,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-28 02:23:20,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:20,366 INFO L256 TraceCheckSpWp]: Trace formula consists of 1727 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 02:23:20,371 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:23:20,456 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 02:23:20,456 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:23:20,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1368039559] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:23:20,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:23:20,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2024-11-28 02:23:20,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142624583] [2024-11-28 02:23:20,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:23:20,457 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 02:23:20,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:20,458 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 02:23:20,458 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:23:20,458 INFO L87 Difference]: Start difference. First operand 677 states and 1098 transitions. Second operand has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-28 02:23:20,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:23:20,643 INFO L93 Difference]: Finished difference Result 1196 states and 1956 transitions. [2024-11-28 02:23:20,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 02:23:20,644 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 97 [2024-11-28 02:23:20,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:23:20,649 INFO L225 Difference]: With dead ends: 1196 [2024-11-28 02:23:20,649 INFO L226 Difference]: Without dead ends: 697 [2024-11-28 02:23:20,652 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-28 02:23:20,653 INFO L435 NwaCegarLoop]: 930 mSDtfsCounter, 113 mSDsluCounter, 5485 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 6415 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:23:20,653 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 6415 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:23:20,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2024-11-28 02:23:20,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 677. [2024-11-28 02:23:20,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 677 states, 542 states have (on average 1.6476014760147601) internal successors, (893), 567 states have internal predecessors, (893), 103 states have call successors, (103), 28 states have call predecessors, (103), 31 states have return successors, (102), 95 states have call predecessors, (102), 98 states have call successors, (102) [2024-11-28 02:23:20,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 1098 transitions. [2024-11-28 02:23:20,689 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 1098 transitions. Word has length 97 [2024-11-28 02:23:20,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:23:20,690 INFO L471 AbstractCegarLoop]: Abstraction has 677 states and 1098 transitions. [2024-11-28 02:23:20,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-28 02:23:20,690 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 1098 transitions. [2024-11-28 02:23:20,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-28 02:23:20,692 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:23:20,692 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:23:20,704 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-28 02:23:20,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-28 02:23:20,893 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:23:20,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:20,893 INFO L85 PathProgramCache]: Analyzing trace with hash 460665337, now seen corresponding path program 1 times [2024-11-28 02:23:20,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:20,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049603152] [2024-11-28 02:23:20,893 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:20,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:20,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:20,998 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-28 02:23:20,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:20,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049603152] [2024-11-28 02:23:20,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049603152] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:23:20,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640286741] [2024-11-28 02:23:20,999 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:20,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:20,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:23:21,001 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:23:21,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-28 02:23:21,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:21,380 INFO L256 TraceCheckSpWp]: Trace formula consists of 1731 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:23:21,384 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:23:21,412 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:23:21,412 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:23:21,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1640286741] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:23:21,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:23:21,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-28 02:23:21,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625429057] [2024-11-28 02:23:21,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:23:21,413 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:23:21,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:21,414 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:23:21,414 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:23:21,414 INFO L87 Difference]: Start difference. First operand 677 states and 1098 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, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-28 02:23:21,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:23:21,480 INFO L93 Difference]: Finished difference Result 1248 states and 2041 transitions. [2024-11-28 02:23:21,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:23:21,481 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, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 97 [2024-11-28 02:23:21,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:23:21,486 INFO L225 Difference]: With dead ends: 1248 [2024-11-28 02:23:21,487 INFO L226 Difference]: Without dead ends: 677 [2024-11-28 02:23:21,489 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:23:21,491 INFO L435 NwaCegarLoop]: 936 mSDtfsCounter, 13 mSDsluCounter, 1868 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2804 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:23:21,491 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2804 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:23:21,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2024-11-28 02:23:21,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 677. [2024-11-28 02:23:21,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 677 states, 542 states have (on average 1.6402214022140222) internal successors, (889), 567 states have internal predecessors, (889), 103 states have call successors, (103), 28 states have call predecessors, (103), 31 states have return successors, (102), 95 states have call predecessors, (102), 98 states have call successors, (102) [2024-11-28 02:23:21,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 1094 transitions. [2024-11-28 02:23:21,523 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 1094 transitions. Word has length 97 [2024-11-28 02:23:21,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:23:21,523 INFO L471 AbstractCegarLoop]: Abstraction has 677 states and 1094 transitions. [2024-11-28 02:23:21,524 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, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-28 02:23:21,524 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 1094 transitions. [2024-11-28 02:23:21,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-28 02:23:21,526 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:23:21,526 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] [2024-11-28 02:23:21,538 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-28 02:23:21,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:21,727 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:23:21,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:21,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1354445235, now seen corresponding path program 1 times [2024-11-28 02:23:21,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:21,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11228166] [2024-11-28 02:23:21,728 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:21,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:21,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:21,823 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-28 02:23:21,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:21,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11228166] [2024-11-28 02:23:21,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11228166] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:23:21,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [783626325] [2024-11-28 02:23:21,824 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:21,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:21,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:23:21,826 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:23:21,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-28 02:23:22,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:22,216 INFO L256 TraceCheckSpWp]: Trace formula consists of 1728 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 02:23:22,220 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:23:22,248 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-28 02:23:22,248 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:23:22,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [783626325] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:23:22,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:23:22,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-28 02:23:22,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021927917] [2024-11-28 02:23:22,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:23:22,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:23:22,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:22,249 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:23:22,249 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:23:22,249 INFO L87 Difference]: Start difference. First operand 677 states and 1094 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-28 02:23:22,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:23:22,340 INFO L93 Difference]: Finished difference Result 1292 states and 2109 transitions. [2024-11-28 02:23:22,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:23:22,340 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 98 [2024-11-28 02:23:22,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:23:22,347 INFO L225 Difference]: With dead ends: 1292 [2024-11-28 02:23:22,347 INFO L226 Difference]: Without dead ends: 701 [2024-11-28 02:23:22,350 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:23:22,351 INFO L435 NwaCegarLoop]: 930 mSDtfsCounter, 7 mSDsluCounter, 1847 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2777 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:23:22,352 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2777 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:23:22,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 701 states. [2024-11-28 02:23:22,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 701 to 701. [2024-11-28 02:23:22,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 701 states, 566 states have (on average 1.6201413427561837) internal successors, (917), 591 states have internal predecessors, (917), 103 states have call successors, (103), 28 states have call predecessors, (103), 31 states have return successors, (102), 95 states have call predecessors, (102), 98 states have call successors, (102) [2024-11-28 02:23:22,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 1122 transitions. [2024-11-28 02:23:22,384 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 1122 transitions. Word has length 98 [2024-11-28 02:23:22,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:23:22,385 INFO L471 AbstractCegarLoop]: Abstraction has 701 states and 1122 transitions. [2024-11-28 02:23:22,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-28 02:23:22,385 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 1122 transitions. [2024-11-28 02:23:22,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-28 02:23:22,388 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:23:22,388 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] [2024-11-28 02:23:22,401 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-28 02:23:22,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-28 02:23:22,589 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:23:22,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:22,590 INFO L85 PathProgramCache]: Analyzing trace with hash -851210788, now seen corresponding path program 1 times [2024-11-28 02:23:22,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:22,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988359856] [2024-11-28 02:23:22,590 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:22,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:22,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:22,697 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-28 02:23:22,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:22,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988359856] [2024-11-28 02:23:22,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988359856] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:23:22,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008409354] [2024-11-28 02:23:22,698 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:22,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:22,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:23:22,700 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:23:22,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-28 02:23:23,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:23,077 INFO L256 TraceCheckSpWp]: Trace formula consists of 1729 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 02:23:23,081 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:23:23,163 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 02:23:23,163 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:23:23,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1008409354] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:23:23,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:23:23,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2024-11-28 02:23:23,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897513605] [2024-11-28 02:23:23,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:23:23,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 02:23:23,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:23,165 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 02:23:23,165 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:23:23,165 INFO L87 Difference]: Start difference. First operand 701 states and 1122 transitions. Second operand has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-28 02:23:23,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:23:23,334 INFO L93 Difference]: Finished difference Result 1226 states and 1988 transitions. [2024-11-28 02:23:23,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 02:23:23,335 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 99 [2024-11-28 02:23:23,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:23:23,340 INFO L225 Difference]: With dead ends: 1226 [2024-11-28 02:23:23,341 INFO L226 Difference]: Without dead ends: 727 [2024-11-28 02:23:23,343 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-28 02:23:23,343 INFO L435 NwaCegarLoop]: 924 mSDtfsCounter, 119 mSDsluCounter, 5447 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 6371 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:23:23,344 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 6371 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:23:23,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2024-11-28 02:23:23,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 701. [2024-11-28 02:23:23,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 701 states, 566 states have (on average 1.6201413427561837) internal successors, (917), 591 states have internal predecessors, (917), 103 states have call successors, (103), 28 states have call predecessors, (103), 31 states have return successors, (102), 95 states have call predecessors, (102), 98 states have call successors, (102) [2024-11-28 02:23:23,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 1122 transitions. [2024-11-28 02:23:23,372 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 1122 transitions. Word has length 99 [2024-11-28 02:23:23,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:23:23,373 INFO L471 AbstractCegarLoop]: Abstraction has 701 states and 1122 transitions. [2024-11-28 02:23:23,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-28 02:23:23,373 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 1122 transitions. [2024-11-28 02:23:23,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-28 02:23:23,375 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:23:23,375 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] [2024-11-28 02:23:23,387 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-28 02:23:23,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-28 02:23:23,576 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:23:23,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:23,576 INFO L85 PathProgramCache]: Analyzing trace with hash 2050839422, now seen corresponding path program 1 times [2024-11-28 02:23:23,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:23,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440604851] [2024-11-28 02:23:23,576 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:23,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:23,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:23,687 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-28 02:23:23,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:23,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440604851] [2024-11-28 02:23:23,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440604851] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:23:23,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [176204127] [2024-11-28 02:23:23,687 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:23,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:23,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:23:23,690 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:23:23,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-28 02:23:24,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:24,067 INFO L256 TraceCheckSpWp]: Trace formula consists of 1732 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 02:23:24,072 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:23:24,602 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-28 02:23:24,602 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:23:24,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [176204127] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:23:24,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:23:24,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4] total 9 [2024-11-28 02:23:24,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228468162] [2024-11-28 02:23:24,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:23:24,604 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:23:24,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:24,605 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:23:24,605 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:23:24,605 INFO L87 Difference]: Start difference. First operand 701 states and 1122 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 6 states have internal predecessors, (63), 4 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-28 02:23:28,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:23:28,718 INFO L93 Difference]: Finished difference Result 2270 states and 3755 transitions. [2024-11-28 02:23:28,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:23:28,718 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 6 states have internal predecessors, (63), 4 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 99 [2024-11-28 02:23:28,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:23:28,729 INFO L225 Difference]: With dead ends: 2270 [2024-11-28 02:23:28,729 INFO L226 Difference]: Without dead ends: 1776 [2024-11-28 02:23:28,732 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:23:28,732 INFO L435 NwaCegarLoop]: 620 mSDtfsCounter, 2820 mSDsluCounter, 1217 mSDsCounter, 0 mSdLazyCounter, 3921 mSolverCounterSat, 504 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3002 SdHoareTripleChecker+Valid, 1837 SdHoareTripleChecker+Invalid, 4425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 504 IncrementalHoareTripleChecker+Valid, 3921 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2024-11-28 02:23:28,732 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3002 Valid, 1837 Invalid, 4425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [504 Valid, 3921 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2024-11-28 02:23:28,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1776 states. [2024-11-28 02:23:28,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1776 to 1589. [2024-11-28 02:23:28,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1589 states, 1267 states have (on average 1.6606156274664563) internal successors, (2104), 1310 states have internal predecessors, (2104), 256 states have call successors, (256), 60 states have call predecessors, (256), 65 states have return successors, (265), 233 states have call predecessors, (265), 251 states have call successors, (265) [2024-11-28 02:23:28,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1589 states to 1589 states and 2625 transitions. [2024-11-28 02:23:28,815 INFO L78 Accepts]: Start accepts. Automaton has 1589 states and 2625 transitions. Word has length 99 [2024-11-28 02:23:28,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:23:28,815 INFO L471 AbstractCegarLoop]: Abstraction has 1589 states and 2625 transitions. [2024-11-28 02:23:28,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 6 states have internal predecessors, (63), 4 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-28 02:23:28,816 INFO L276 IsEmpty]: Start isEmpty. Operand 1589 states and 2625 transitions. [2024-11-28 02:23:28,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-11-28 02:23:28,820 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:23:28,821 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:23:28,832 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-28 02:23:29,021 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:29,021 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:23:29,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:29,022 INFO L85 PathProgramCache]: Analyzing trace with hash 165512894, now seen corresponding path program 1 times [2024-11-28 02:23:29,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:29,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144436310] [2024-11-28 02:23:29,022 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:29,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:29,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:29,237 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-28 02:23:29,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:29,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144436310] [2024-11-28 02:23:29,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144436310] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:23:29,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555911808] [2024-11-28 02:23:29,237 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:29,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:29,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:23:29,240 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:23:29,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-28 02:23:29,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:29,677 INFO L256 TraceCheckSpWp]: Trace formula consists of 2076 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 02:23:29,681 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:23:29,714 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-28 02:23:29,714 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:23:29,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [555911808] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:23:29,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:23:29,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2024-11-28 02:23:29,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880703075] [2024-11-28 02:23:29,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:23:29,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:23:29,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:29,716 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:23:29,716 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:23:29,716 INFO L87 Difference]: Start difference. First operand 1589 states and 2625 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-28 02:23:29,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:23:29,797 INFO L93 Difference]: Finished difference Result 2979 states and 4968 transitions. [2024-11-28 02:23:29,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:23:29,797 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 138 [2024-11-28 02:23:29,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:23:29,805 INFO L225 Difference]: With dead ends: 2979 [2024-11-28 02:23:29,805 INFO L226 Difference]: Without dead ends: 1598 [2024-11-28 02:23:29,810 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:23:29,810 INFO L435 NwaCegarLoop]: 943 mSDtfsCounter, 0 mSDsluCounter, 2821 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3764 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:23:29,810 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3764 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:23:29,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1598 states. [2024-11-28 02:23:29,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1598 to 1598. [2024-11-28 02:23:29,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1598 states, 1276 states have (on average 1.6559561128526645) internal successors, (2113), 1319 states have internal predecessors, (2113), 256 states have call successors, (256), 60 states have call predecessors, (256), 65 states have return successors, (265), 233 states have call predecessors, (265), 251 states have call successors, (265) [2024-11-28 02:23:29,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1598 states to 1598 states and 2634 transitions. [2024-11-28 02:23:29,887 INFO L78 Accepts]: Start accepts. Automaton has 1598 states and 2634 transitions. Word has length 138 [2024-11-28 02:23:29,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:23:29,887 INFO L471 AbstractCegarLoop]: Abstraction has 1598 states and 2634 transitions. [2024-11-28 02:23:29,888 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-28 02:23:29,888 INFO L276 IsEmpty]: Start isEmpty. Operand 1598 states and 2634 transitions. [2024-11-28 02:23:29,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-28 02:23:29,892 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:23:29,892 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:23:29,905 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-28 02:23:30,093 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:30,093 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:23:30,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:30,094 INFO L85 PathProgramCache]: Analyzing trace with hash 685182054, now seen corresponding path program 1 times [2024-11-28 02:23:30,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:30,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962171522] [2024-11-28 02:23:30,094 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:30,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:30,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:30,279 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-28 02:23:30,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:30,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962171522] [2024-11-28 02:23:30,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962171522] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:23:30,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890367254] [2024-11-28 02:23:30,279 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:30,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:30,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:23:30,282 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:23:30,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-28 02:23:30,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:30,773 INFO L256 TraceCheckSpWp]: Trace formula consists of 2083 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 02:23:30,778 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:23:30,961 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-28 02:23:30,961 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:23:30,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890367254] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:23:30,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:23:30,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2024-11-28 02:23:30,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086747113] [2024-11-28 02:23:30,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:23:30,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 02:23:30,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:30,963 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 02:23:30,963 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:23:30,963 INFO L87 Difference]: Start difference. First operand 1598 states and 2634 transitions. Second operand has 8 states, 8 states have (on average 11.25) internal successors, (90), 7 states have internal predecessors, (90), 5 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-28 02:23:34,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:23:34,654 INFO L93 Difference]: Finished difference Result 4270 states and 7091 transitions. [2024-11-28 02:23:34,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 02:23:34,655 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.25) internal successors, (90), 7 states have internal predecessors, (90), 5 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) Word has length 140 [2024-11-28 02:23:34,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:23:34,674 INFO L225 Difference]: With dead ends: 4270 [2024-11-28 02:23:34,675 INFO L226 Difference]: Without dead ends: 2713 [2024-11-28 02:23:34,727 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2024-11-28 02:23:34,728 INFO L435 NwaCegarLoop]: 467 mSDtfsCounter, 1702 mSDsluCounter, 1831 mSDsCounter, 0 mSdLazyCounter, 5189 mSolverCounterSat, 250 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1795 SdHoareTripleChecker+Valid, 2298 SdHoareTripleChecker+Invalid, 5439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 250 IncrementalHoareTripleChecker+Valid, 5189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-28 02:23:34,728 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1795 Valid, 2298 Invalid, 5439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [250 Valid, 5189 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-28 02:23:34,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2713 states. [2024-11-28 02:23:34,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2713 to 2488. [2024-11-28 02:23:34,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2488 states, 1959 states have (on average 1.638080653394589) internal successors, (3209), 2011 states have internal predecessors, (3209), 420 states have call successors, (420), 89 states have call predecessors, (420), 108 states have return successors, (463), 398 states have call predecessors, (463), 415 states have call successors, (463) [2024-11-28 02:23:34,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2488 states to 2488 states and 4092 transitions. [2024-11-28 02:23:34,874 INFO L78 Accepts]: Start accepts. Automaton has 2488 states and 4092 transitions. Word has length 140 [2024-11-28 02:23:34,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:23:34,875 INFO L471 AbstractCegarLoop]: Abstraction has 2488 states and 4092 transitions. [2024-11-28 02:23:34,875 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.25) internal successors, (90), 7 states have internal predecessors, (90), 5 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-28 02:23:34,875 INFO L276 IsEmpty]: Start isEmpty. Operand 2488 states and 4092 transitions. [2024-11-28 02:23:34,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-28 02:23:34,881 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:23:34,881 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:23:34,894 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-28 02:23:35,085 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-28 02:23:35,086 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:23:35,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:35,086 INFO L85 PathProgramCache]: Analyzing trace with hash -2080976094, now seen corresponding path program 1 times [2024-11-28 02:23:35,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:35,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916129243] [2024-11-28 02:23:35,087 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:35,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:35,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:35,223 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-28 02:23:35,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:35,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916129243] [2024-11-28 02:23:35,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916129243] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:23:35,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [426169575] [2024-11-28 02:23:35,223 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:35,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:35,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:23:35,226 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:23:35,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-28 02:23:35,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:35,676 INFO L256 TraceCheckSpWp]: Trace formula consists of 2083 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 02:23:35,681 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:23:35,925 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-28 02:23:35,925 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:23:35,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [426169575] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:23:35,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:23:35,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-11-28 02:23:35,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044741566] [2024-11-28 02:23:35,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:23:35,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:23:35,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:35,928 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:23:35,928 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:23:35,928 INFO L87 Difference]: Start difference. First operand 2488 states and 4092 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-28 02:23:36,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:23:36,383 INFO L93 Difference]: Finished difference Result 2600 states and 4279 transitions. [2024-11-28 02:23:36,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:23:36,384 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) Word has length 141 [2024-11-28 02:23:36,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:23:36,401 INFO L225 Difference]: With dead ends: 2600 [2024-11-28 02:23:36,401 INFO L226 Difference]: Without dead ends: 2585 [2024-11-28 02:23:36,403 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:23:36,405 INFO L435 NwaCegarLoop]: 936 mSDtfsCounter, 866 mSDsluCounter, 776 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 874 SdHoareTripleChecker+Valid, 1712 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 02:23:36,405 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [874 Valid, 1712 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 02:23:36,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2585 states. [2024-11-28 02:23:36,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2585 to 2494. [2024-11-28 02:23:36,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2494 states, 1965 states have (on average 1.6361323155216285) internal successors, (3215), 2017 states have internal predecessors, (3215), 420 states have call successors, (420), 89 states have call predecessors, (420), 108 states have return successors, (463), 398 states have call predecessors, (463), 415 states have call successors, (463) [2024-11-28 02:23:36,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2494 states to 2494 states and 4098 transitions. [2024-11-28 02:23:36,563 INFO L78 Accepts]: Start accepts. Automaton has 2494 states and 4098 transitions. Word has length 141 [2024-11-28 02:23:36,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:23:36,564 INFO L471 AbstractCegarLoop]: Abstraction has 2494 states and 4098 transitions. [2024-11-28 02:23:36,565 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-28 02:23:36,565 INFO L276 IsEmpty]: Start isEmpty. Operand 2494 states and 4098 transitions. [2024-11-28 02:23:36,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-28 02:23:36,571 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:23:36,571 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:23:36,583 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-28 02:23:36,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-28 02:23:36,772 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:23:36,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:36,773 INFO L85 PathProgramCache]: Analyzing trace with hash -225605955, now seen corresponding path program 1 times [2024-11-28 02:23:36,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:36,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889752054] [2024-11-28 02:23:36,774 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:36,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:36,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:36,926 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-28 02:23:36,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:36,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889752054] [2024-11-28 02:23:36,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889752054] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:23:36,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064219246] [2024-11-28 02:23:36,927 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:36,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:36,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:23:36,929 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:23:36,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-28 02:23:37,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:37,359 INFO L256 TraceCheckSpWp]: Trace formula consists of 2099 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 02:23:37,364 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:23:37,492 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-28 02:23:37,493 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:23:37,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064219246] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:23:37,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:23:37,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4] total 8 [2024-11-28 02:23:37,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331000877] [2024-11-28 02:23:37,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:23:37,494 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:23:37,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:37,494 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:23:37,494 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:23:37,495 INFO L87 Difference]: Start difference. First operand 2494 states and 4098 transitions. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 5 states have internal predecessors, (95), 3 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-28 02:23:37,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:23:37,918 INFO L93 Difference]: Finished difference Result 2630 states and 4288 transitions. [2024-11-28 02:23:37,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:23:37,918 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 5 states have internal predecessors, (95), 3 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) Word has length 147 [2024-11-28 02:23:37,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:23:37,935 INFO L225 Difference]: With dead ends: 2630 [2024-11-28 02:23:37,936 INFO L226 Difference]: Without dead ends: 2615 [2024-11-28 02:23:37,938 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:23:37,939 INFO L435 NwaCegarLoop]: 943 mSDtfsCounter, 881 mSDsluCounter, 2766 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 882 SdHoareTripleChecker+Valid, 3709 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:23:37,939 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [882 Valid, 3709 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 02:23:37,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2615 states. [2024-11-28 02:23:38,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2615 to 2594. [2024-11-28 02:23:38,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2594 states, 2041 states have (on average 1.627143557079863) internal successors, (3321), 2093 states have internal predecessors, (3321), 436 states have call successors, (436), 99 states have call predecessors, (436), 116 states have return successors, (482), 412 states have call predecessors, (482), 431 states have call successors, (482) [2024-11-28 02:23:38,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2594 states to 2594 states and 4239 transitions. [2024-11-28 02:23:38,145 INFO L78 Accepts]: Start accepts. Automaton has 2594 states and 4239 transitions. Word has length 147 [2024-11-28 02:23:38,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:23:38,146 INFO L471 AbstractCegarLoop]: Abstraction has 2594 states and 4239 transitions. [2024-11-28 02:23:38,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 5 states have internal predecessors, (95), 3 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-28 02:23:38,146 INFO L276 IsEmpty]: Start isEmpty. Operand 2594 states and 4239 transitions. [2024-11-28 02:23:38,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-11-28 02:23:38,154 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:23:38,155 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:23:38,167 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-28 02:23:38,355 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-28 02:23:38,356 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:23:38,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:38,356 INFO L85 PathProgramCache]: Analyzing trace with hash -2117641170, now seen corresponding path program 1 times [2024-11-28 02:23:38,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:38,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154123955] [2024-11-28 02:23:38,357 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:38,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:38,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:38,509 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-28 02:23:38,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:38,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154123955] [2024-11-28 02:23:38,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154123955] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:23:38,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104869001] [2024-11-28 02:23:38,510 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:38,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:38,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:23:38,512 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:23:38,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-28 02:23:38,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:38,933 INFO L256 TraceCheckSpWp]: Trace formula consists of 2136 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 02:23:38,936 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:23:38,959 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-28 02:23:38,959 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:23:38,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2104869001] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:23:38,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:23:38,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-11-28 02:23:38,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393248863] [2024-11-28 02:23:38,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:23:38,960 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:23:38,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:38,961 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:23:38,962 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:23:38,962 INFO L87 Difference]: Start difference. First operand 2594 states and 4239 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-28 02:23:39,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:23:39,146 INFO L93 Difference]: Finished difference Result 5162 states and 8448 transitions. [2024-11-28 02:23:39,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:23:39,147 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) Word has length 158 [2024-11-28 02:23:39,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:23:39,165 INFO L225 Difference]: With dead ends: 5162 [2024-11-28 02:23:39,165 INFO L226 Difference]: Without dead ends: 2563 [2024-11-28 02:23:39,174 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:23:39,175 INFO L435 NwaCegarLoop]: 938 mSDtfsCounter, 7 mSDsluCounter, 1869 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2807 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:23:39,175 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2807 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:23:39,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2563 states. [2024-11-28 02:23:39,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2563 to 2563. [2024-11-28 02:23:39,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2563 states, 2013 states have (on average 1.6269249875807252) internal successors, (3275), 2063 states have internal predecessors, (3275), 435 states have call successors, (435), 99 states have call predecessors, (435), 114 states have return successors, (479), 411 states have call predecessors, (479), 430 states have call successors, (479) [2024-11-28 02:23:39,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2563 states to 2563 states and 4189 transitions. [2024-11-28 02:23:39,327 INFO L78 Accepts]: Start accepts. Automaton has 2563 states and 4189 transitions. Word has length 158 [2024-11-28 02:23:39,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:23:39,328 INFO L471 AbstractCegarLoop]: Abstraction has 2563 states and 4189 transitions. [2024-11-28 02:23:39,329 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-28 02:23:39,329 INFO L276 IsEmpty]: Start isEmpty. Operand 2563 states and 4189 transitions. [2024-11-28 02:23:39,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-28 02:23:39,336 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:23:39,338 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:23:39,350 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-28 02:23:39,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-28 02:23:39,539 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:23:39,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:39,539 INFO L85 PathProgramCache]: Analyzing trace with hash 516542595, now seen corresponding path program 1 times [2024-11-28 02:23:39,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:39,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800663542] [2024-11-28 02:23:39,540 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:39,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:39,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:39,754 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-28 02:23:39,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:39,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800663542] [2024-11-28 02:23:39,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800663542] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:23:39,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1323170057] [2024-11-28 02:23:39,754 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:39,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:39,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:23:39,757 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:23:39,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-28 02:23:40,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:40,241 INFO L256 TraceCheckSpWp]: Trace formula consists of 2139 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-28 02:23:40,245 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:23:40,281 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 02:23:40,281 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:23:40,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1323170057] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:23:40,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:23:40,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 7 [2024-11-28 02:23:40,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403474675] [2024-11-28 02:23:40,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:23:40,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:23:40,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:40,283 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:23:40,283 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:23:40,283 INFO L87 Difference]: Start difference. First operand 2563 states and 4189 transitions. Second operand has 7 states, 6 states have (on average 20.166666666666668) internal successors, (121), 6 states have internal predecessors, (121), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-28 02:23:40,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:23:40,452 INFO L93 Difference]: Finished difference Result 5095 states and 8342 transitions. [2024-11-28 02:23:40,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:23:40,453 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 20.166666666666668) internal successors, (121), 6 states have internal predecessors, (121), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) Word has length 160 [2024-11-28 02:23:40,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:23:40,469 INFO L225 Difference]: With dead ends: 5095 [2024-11-28 02:23:40,469 INFO L226 Difference]: Without dead ends: 2563 [2024-11-28 02:23:40,480 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:23:40,480 INFO L435 NwaCegarLoop]: 956 mSDtfsCounter, 119 mSDsluCounter, 4654 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 5610 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:23:40,481 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 5610 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:23:40,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2563 states. [2024-11-28 02:23:40,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2563 to 2542. [2024-11-28 02:23:40,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2542 states, 1992 states have (on average 1.627008032128514) internal successors, (3241), 2042 states have internal predecessors, (3241), 435 states have call successors, (435), 99 states have call predecessors, (435), 114 states have return successors, (479), 411 states have call predecessors, (479), 430 states have call successors, (479) [2024-11-28 02:23:40,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2542 states to 2542 states and 4155 transitions. [2024-11-28 02:23:40,608 INFO L78 Accepts]: Start accepts. Automaton has 2542 states and 4155 transitions. Word has length 160 [2024-11-28 02:23:40,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:23:40,608 INFO L471 AbstractCegarLoop]: Abstraction has 2542 states and 4155 transitions. [2024-11-28 02:23:40,608 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 20.166666666666668) internal successors, (121), 6 states have internal predecessors, (121), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-28 02:23:40,608 INFO L276 IsEmpty]: Start isEmpty. Operand 2542 states and 4155 transitions. [2024-11-28 02:23:40,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-11-28 02:23:40,614 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:23:40,614 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:23:40,626 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-11-28 02:23:40,815 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-28 02:23:40,815 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:23:40,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:40,816 INFO L85 PathProgramCache]: Analyzing trace with hash -169396216, now seen corresponding path program 1 times [2024-11-28 02:23:40,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:40,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90599383] [2024-11-28 02:23:40,816 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:40,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:40,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:41,038 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 02:23:41,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:41,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90599383] [2024-11-28 02:23:41,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90599383] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:23:41,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597573974] [2024-11-28 02:23:41,039 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:41,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:41,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:23:41,041 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:23:41,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-28 02:23:41,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:41,515 INFO L256 TraceCheckSpWp]: Trace formula consists of 2145 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:23:41,522 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:23:41,570 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 02:23:41,570 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:23:41,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597573974] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:23:41,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:23:41,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-28 02:23:41,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517578457] [2024-11-28 02:23:41,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:23:41,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:23:41,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:41,572 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:23:41,572 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:23:41,573 INFO L87 Difference]: Start difference. First operand 2542 states and 4155 transitions. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-28 02:23:41,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:23:41,789 INFO L93 Difference]: Finished difference Result 5077 states and 8312 transitions. [2024-11-28 02:23:41,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:23:41,790 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 162 [2024-11-28 02:23:41,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:23:41,809 INFO L225 Difference]: With dead ends: 5077 [2024-11-28 02:23:41,809 INFO L226 Difference]: Without dead ends: 2566 [2024-11-28 02:23:41,818 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:23:41,818 INFO L435 NwaCegarLoop]: 921 mSDtfsCounter, 128 mSDsluCounter, 1765 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 2686 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:23:41,820 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 2686 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:23:41,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2566 states. [2024-11-28 02:23:41,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2566 to 2542. [2024-11-28 02:23:41,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2542 states, 1992 states have (on average 1.6265060240963856) internal successors, (3240), 2042 states have internal predecessors, (3240), 435 states have call successors, (435), 99 states have call predecessors, (435), 114 states have return successors, (479), 411 states have call predecessors, (479), 430 states have call successors, (479) [2024-11-28 02:23:41,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2542 states to 2542 states and 4154 transitions. [2024-11-28 02:23:41,985 INFO L78 Accepts]: Start accepts. Automaton has 2542 states and 4154 transitions. Word has length 162 [2024-11-28 02:23:41,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:23:41,985 INFO L471 AbstractCegarLoop]: Abstraction has 2542 states and 4154 transitions. [2024-11-28 02:23:41,985 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-28 02:23:41,986 INFO L276 IsEmpty]: Start isEmpty. Operand 2542 states and 4154 transitions. [2024-11-28 02:23:41,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-11-28 02:23:41,993 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:23:41,994 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:23:42,006 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-28 02:23:42,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6517ede1-0c60-4f88-8f41-146d9d8794ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-28 02:23:42,198 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:23:42,200 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:42,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1292694628, now seen corresponding path program 1 times [2024-11-28 02:23:42,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:42,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457325596] [2024-11-28 02:23:42,201 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:42,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:42,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:42,380 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-28 02:23:42,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:42,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457325596] [2024-11-28 02:23:42,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457325596] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:23:42,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:23:42,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:23:42,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630654813] [2024-11-28 02:23:42,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:23:42,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:23:42,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:42,385 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:23:42,386 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:23:42,386 INFO L87 Difference]: Start difference. First operand 2542 states and 4154 transitions. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-28 02:23:42,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:23:42,542 INFO L93 Difference]: Finished difference Result 5012 states and 8221 transitions. [2024-11-28 02:23:42,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:23:42,543 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 163 [2024-11-28 02:23:42,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:23:42,559 INFO L225 Difference]: With dead ends: 5012 [2024-11-28 02:23:42,559 INFO L226 Difference]: Without dead ends: 2502 [2024-11-28 02:23:42,568 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:23:42,568 INFO L435 NwaCegarLoop]: 936 mSDtfsCounter, 8 mSDsluCounter, 1868 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2804 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:23:42,569 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 2804 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:23:42,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2502 states. [2024-11-28 02:23:42,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2502 to 2502. [2024-11-28 02:23:42,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2502 states, 1955 states have (on average 1.6250639386189258) internal successors, (3177), 2003 states have internal predecessors, (3177), 434 states have call successors, (434), 99 states have call predecessors, (434), 112 states have return successors, (476), 410 states have call predecessors, (476), 429 states have call successors, (476) [2024-11-28 02:23:42,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2502 states to 2502 states and 4087 transitions. [2024-11-28 02:23:42,690 INFO L78 Accepts]: Start accepts. Automaton has 2502 states and 4087 transitions. Word has length 163 [2024-11-28 02:23:42,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:23:42,692 INFO L471 AbstractCegarLoop]: Abstraction has 2502 states and 4087 transitions. [2024-11-28 02:23:42,692 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-28 02:23:42,692 INFO L276 IsEmpty]: Start isEmpty. Operand 2502 states and 4087 transitions. [2024-11-28 02:23:42,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-11-28 02:23:42,698 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:23:42,698 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:23:42,698 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-28 02:23:42,698 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:23:42,699 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:42,699 INFO L85 PathProgramCache]: Analyzing trace with hash -228588416, now seen corresponding path program 1 times [2024-11-28 02:23:42,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:42,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097472641] [2024-11-28 02:23:42,699 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:42,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:42,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:42,962 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-28 02:23:42,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:42,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097472641] [2024-11-28 02:23:42,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097472641] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:23:42,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:23:42,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 02:23:42,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602455717] [2024-11-28 02:23:42,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:23:42,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:23:42,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:42,963 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:23:42,963 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:23:42,964 INFO L87 Difference]: Start difference. First operand 2502 states and 4087 transitions. Second operand has 7 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-28 02:23:43,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:23:43,122 INFO L93 Difference]: Finished difference Result 4915 states and 8060 transitions. [2024-11-28 02:23:43,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:23:43,122 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 164 [2024-11-28 02:23:43,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:23:43,142 INFO L225 Difference]: With dead ends: 4915 [2024-11-28 02:23:43,142 INFO L226 Difference]: Without dead ends: 2488 [2024-11-28 02:23:43,150 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 [2024-11-28 02:23:43,152 INFO L435 NwaCegarLoop]: 919 mSDtfsCounter, 88 mSDsluCounter, 4517 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 5436 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:23:43,153 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 5436 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:23:43,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2488 states. [2024-11-28 02:23:43,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2488 to 2488. [2024-11-28 02:23:43,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2488 states, 1941 states have (on average 1.6239052035033488) internal successors, (3152), 1989 states have internal predecessors, (3152), 434 states have call successors, (434), 99 states have call predecessors, (434), 112 states have return successors, (476), 410 states have call predecessors, (476), 429 states have call successors, (476) [2024-11-28 02:23:43,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2488 states to 2488 states and 4062 transitions. [2024-11-28 02:23:43,273 INFO L78 Accepts]: Start accepts. Automaton has 2488 states and 4062 transitions. Word has length 164 [2024-11-28 02:23:43,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:23:43,273 INFO L471 AbstractCegarLoop]: Abstraction has 2488 states and 4062 transitions. [2024-11-28 02:23:43,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-28 02:23:43,273 INFO L276 IsEmpty]: Start isEmpty. Operand 2488 states and 4062 transitions. [2024-11-28 02:23:43,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-11-28 02:23:43,277 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:23:43,278 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:23:43,278 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-28 02:23:43,278 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:23:43,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:43,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1939289045, now seen corresponding path program 1 times [2024-11-28 02:23:43,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:43,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852370906] [2024-11-28 02:23:43,279 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:43,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:43,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:43,730 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 02:23:43,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:43,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852370906] [2024-11-28 02:23:43,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852370906] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:23:43,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:23:43,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-28 02:23:43,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68208366] [2024-11-28 02:23:43,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:23:43,732 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 02:23:43,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:43,733 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 02:23:43,734 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:23:43,734 INFO L87 Difference]: Start difference. First operand 2488 states and 4062 transitions. Second operand has 10 states, 9 states have (on average 14.0) internal successors, (126), 9 states have internal predecessors, (126), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-28 02:23:43,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:23:43,989 INFO L93 Difference]: Finished difference Result 4942 states and 8088 transitions. [2024-11-28 02:23:43,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 02:23:43,989 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 14.0) internal successors, (126), 9 states have internal predecessors, (126), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 165 [2024-11-28 02:23:43,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:23:44,006 INFO L225 Difference]: With dead ends: 4942 [2024-11-28 02:23:44,007 INFO L226 Difference]: Without dead ends: 2479 [2024-11-28 02:23:44,015 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-28 02:23:44,020 INFO L435 NwaCegarLoop]: 879 mSDtfsCounter, 45 mSDsluCounter, 6110 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 6989 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:23:44,020 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 6989 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:23:44,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2479 states. [2024-11-28 02:23:44,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2479 to 2479. [2024-11-28 02:23:44,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2479 states, 1932 states have (on average 1.6237060041407867) internal successors, (3137), 1980 states have internal predecessors, (3137), 434 states have call successors, (434), 99 states have call predecessors, (434), 112 states have return successors, (476), 410 states have call predecessors, (476), 429 states have call successors, (476) [2024-11-28 02:23:44,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2479 states to 2479 states and 4047 transitions. [2024-11-28 02:23:44,133 INFO L78 Accepts]: Start accepts. Automaton has 2479 states and 4047 transitions. Word has length 165 [2024-11-28 02:23:44,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:23:44,134 INFO L471 AbstractCegarLoop]: Abstraction has 2479 states and 4047 transitions. [2024-11-28 02:23:44,134 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 14.0) internal successors, (126), 9 states have internal predecessors, (126), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-28 02:23:44,134 INFO L276 IsEmpty]: Start isEmpty. Operand 2479 states and 4047 transitions. [2024-11-28 02:23:44,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-11-28 02:23:44,139 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:23:44,139 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:23:44,139 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-28 02:23:44,139 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:23:44,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:44,140 INFO L85 PathProgramCache]: Analyzing trace with hash -862055511, now seen corresponding path program 1 times [2024-11-28 02:23:44,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:44,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13712778] [2024-11-28 02:23:44,140 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:44,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:44,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:44,574 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 02:23:44,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:44,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13712778] [2024-11-28 02:23:44,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13712778] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:23:44,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:23:44,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-28 02:23:44,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374741490] [2024-11-28 02:23:44,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:23:44,576 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 02:23:44,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:44,577 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 02:23:44,578 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:23:44,578 INFO L87 Difference]: Start difference. First operand 2479 states and 4047 transitions. Second operand has 10 states, 9 states have (on average 14.11111111111111) internal successors, (127), 9 states have internal predecessors, (127), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-28 02:23:44,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:23:44,825 INFO L93 Difference]: Finished difference Result 4874 states and 7994 transitions. [2024-11-28 02:23:44,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 02:23:44,826 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 14.11111111111111) internal successors, (127), 9 states have internal predecessors, (127), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 166 [2024-11-28 02:23:44,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:23:44,842 INFO L225 Difference]: With dead ends: 4874 [2024-11-28 02:23:44,842 INFO L226 Difference]: Without dead ends: 2473 [2024-11-28 02:23:44,850 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-28 02:23:44,851 INFO L435 NwaCegarLoop]: 888 mSDtfsCounter, 31 mSDsluCounter, 7056 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 7944 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:23:44,854 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 7944 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:23:44,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2473 states. [2024-11-28 02:23:45,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2473 to 2473. [2024-11-28 02:23:45,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2473 states, 1926 states have (on average 1.6251298026998962) internal successors, (3130), 1974 states have internal predecessors, (3130), 434 states have call successors, (434), 99 states have call predecessors, (434), 112 states have return successors, (476), 410 states have call predecessors, (476), 429 states have call successors, (476) [2024-11-28 02:23:45,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2473 states to 2473 states and 4040 transitions. [2024-11-28 02:23:45,029 INFO L78 Accepts]: Start accepts. Automaton has 2473 states and 4040 transitions. Word has length 166 [2024-11-28 02:23:45,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:23:45,030 INFO L471 AbstractCegarLoop]: Abstraction has 2473 states and 4040 transitions. [2024-11-28 02:23:45,030 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 14.11111111111111) internal successors, (127), 9 states have internal predecessors, (127), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-28 02:23:45,030 INFO L276 IsEmpty]: Start isEmpty. Operand 2473 states and 4040 transitions. [2024-11-28 02:23:45,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-11-28 02:23:45,035 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:23:45,035 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:23:45,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-28 02:23:45,036 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:23:45,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:45,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1307728153, now seen corresponding path program 1 times [2024-11-28 02:23:45,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:45,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305522091] [2024-11-28 02:23:45,037 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:45,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:45,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:45,402 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-28 02:23:45,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:45,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305522091] [2024-11-28 02:23:45,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305522091] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:23:45,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:23:45,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:23:45,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323443436] [2024-11-28 02:23:45,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:23:45,403 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:23:45,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:45,404 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:23:45,404 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:23:45,404 INFO L87 Difference]: Start difference. First operand 2473 states and 4040 transitions. Second operand has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 6 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2024-11-28 02:23:48,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:23:48,728 INFO L93 Difference]: Finished difference Result 7036 states and 11725 transitions. [2024-11-28 02:23:48,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:23:48,728 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 6 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) Word has length 166 [2024-11-28 02:23:48,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:23:48,753 INFO L225 Difference]: With dead ends: 7036 [2024-11-28 02:23:48,753 INFO L226 Difference]: Without dead ends: 4652 [2024-11-28 02:23:48,763 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:23:48,764 INFO L435 NwaCegarLoop]: 880 mSDtfsCounter, 3463 mSDsluCounter, 1284 mSDsCounter, 0 mSdLazyCounter, 3574 mSolverCounterSat, 1075 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3499 SdHoareTripleChecker+Valid, 2164 SdHoareTripleChecker+Invalid, 4649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1075 IncrementalHoareTripleChecker+Valid, 3574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:23:48,764 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3499 Valid, 2164 Invalid, 4649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1075 Valid, 3574 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-28 02:23:48,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4652 states. [2024-11-28 02:23:48,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4652 to 4269. [2024-11-28 02:23:48,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4269 states, 3278 states have (on average 1.6122635753508237) internal successors, (5285), 3376 states have internal predecessors, (5285), 795 states have call successors, (795), 162 states have call predecessors, (795), 195 states have return successors, (912), 768 states have call predecessors, (912), 790 states have call successors, (912) [2024-11-28 02:23:49,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4269 states to 4269 states and 6992 transitions. [2024-11-28 02:23:49,020 INFO L78 Accepts]: Start accepts. Automaton has 4269 states and 6992 transitions. Word has length 166 [2024-11-28 02:23:49,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:23:49,020 INFO L471 AbstractCegarLoop]: Abstraction has 4269 states and 6992 transitions. [2024-11-28 02:23:49,020 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 6 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2024-11-28 02:23:49,021 INFO L276 IsEmpty]: Start isEmpty. Operand 4269 states and 6992 transitions. [2024-11-28 02:23:49,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-11-28 02:23:49,025 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:23:49,025 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:23:49,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-28 02:23:49,025 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:23:49,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:49,026 INFO L85 PathProgramCache]: Analyzing trace with hash -457139314, now seen corresponding path program 1 times [2024-11-28 02:23:49,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:49,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676756681] [2024-11-28 02:23:49,026 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:49,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:49,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:49,276 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-28 02:23:49,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:49,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676756681] [2024-11-28 02:23:49,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676756681] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:23:49,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:23:49,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:23:49,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126613774] [2024-11-28 02:23:49,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:23:49,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:23:49,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:49,278 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:23:49,278 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:23:49,278 INFO L87 Difference]: Start difference. First operand 4269 states and 6992 transitions. Second operand has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 6 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2024-11-28 02:23:52,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:23:52,707 INFO L93 Difference]: Finished difference Result 13572 states and 22766 transitions. [2024-11-28 02:23:52,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:23:52,708 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 6 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) Word has length 167 [2024-11-28 02:23:52,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:23:52,750 INFO L225 Difference]: With dead ends: 13572 [2024-11-28 02:23:52,750 INFO L226 Difference]: Without dead ends: 9395 [2024-11-28 02:23:52,768 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:23:52,769 INFO L435 NwaCegarLoop]: 879 mSDtfsCounter, 3476 mSDsluCounter, 1298 mSDsCounter, 0 mSdLazyCounter, 3535 mSolverCounterSat, 1099 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3513 SdHoareTripleChecker+Valid, 2177 SdHoareTripleChecker+Invalid, 4634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1099 IncrementalHoareTripleChecker+Valid, 3535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-28 02:23:52,769 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3513 Valid, 2177 Invalid, 4634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1099 Valid, 3535 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-28 02:23:52,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9395 states. [2024-11-28 02:23:53,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9395 to 8628. [2024-11-28 02:23:53,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8628 states, 6479 states have (on average 1.6008643309152648) internal successors, (10372), 6709 states have internal predecessors, (10372), 1764 states have call successors, (1764), 288 states have call predecessors, (1764), 384 states have return successors, (2146), 1751 states have call predecessors, (2146), 1759 states have call successors, (2146) [2024-11-28 02:23:53,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8628 states to 8628 states and 14282 transitions. [2024-11-28 02:23:53,415 INFO L78 Accepts]: Start accepts. Automaton has 8628 states and 14282 transitions. Word has length 167 [2024-11-28 02:23:53,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:23:53,416 INFO L471 AbstractCegarLoop]: Abstraction has 8628 states and 14282 transitions. [2024-11-28 02:23:53,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 6 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2024-11-28 02:23:53,416 INFO L276 IsEmpty]: Start isEmpty. Operand 8628 states and 14282 transitions. [2024-11-28 02:23:53,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-28 02:23:53,420 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:23:53,421 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:23:53,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-11-28 02:23:53,421 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:23:53,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:53,421 INFO L85 PathProgramCache]: Analyzing trace with hash -902180596, now seen corresponding path program 1 times [2024-11-28 02:23:53,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:53,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719243411] [2024-11-28 02:23:53,422 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:53,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:53,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:53,663 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-28 02:23:53,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:53,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719243411] [2024-11-28 02:23:53,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719243411] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:23:53,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:23:53,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:23:53,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041098883] [2024-11-28 02:23:53,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:23:53,664 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:23:53,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:53,665 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:23:53,665 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:23:53,665 INFO L87 Difference]: Start difference. First operand 8628 states and 14282 transitions. Second operand has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 6 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2024-11-28 02:23:58,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:23:58,536 INFO L93 Difference]: Finished difference Result 30593 states and 52162 transitions. [2024-11-28 02:23:58,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:23:58,537 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 6 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) Word has length 168 [2024-11-28 02:23:58,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:23:58,650 INFO L225 Difference]: With dead ends: 30593 [2024-11-28 02:23:58,650 INFO L226 Difference]: Without dead ends: 22063 [2024-11-28 02:23:58,690 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:23:58,691 INFO L435 NwaCegarLoop]: 885 mSDtfsCounter, 3488 mSDsluCounter, 1313 mSDsCounter, 0 mSdLazyCounter, 3542 mSolverCounterSat, 1102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3526 SdHoareTripleChecker+Valid, 2198 SdHoareTripleChecker+Invalid, 4644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1102 IncrementalHoareTripleChecker+Valid, 3542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:23:58,691 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3526 Valid, 2198 Invalid, 4644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1102 Valid, 3542 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-28 02:23:58,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22063 states. [2024-11-28 02:24:00,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22063 to 20089. [2024-11-28 02:24:00,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20089 states, 14661 states have (on average 1.591160220994475) internal successors, (23328), 15264 states have internal predecessors, (23328), 4583 states have call successors, (4583), 540 states have call predecessors, (4583), 844 states have return successors, (5977), 4674 states have call predecessors, (5977), 4578 states have call successors, (5977) [2024-11-28 02:24:00,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20089 states to 20089 states and 33888 transitions. [2024-11-28 02:24:00,648 INFO L78 Accepts]: Start accepts. Automaton has 20089 states and 33888 transitions. Word has length 168 [2024-11-28 02:24:00,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:24:00,649 INFO L471 AbstractCegarLoop]: Abstraction has 20089 states and 33888 transitions. [2024-11-28 02:24:00,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 6 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2024-11-28 02:24:00,649 INFO L276 IsEmpty]: Start isEmpty. Operand 20089 states and 33888 transitions. [2024-11-28 02:24:00,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-11-28 02:24:00,745 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:24:00,745 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:24:00,745 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-11-28 02:24:00,745 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:24:00,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:24:00,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1437917331, now seen corresponding path program 1 times [2024-11-28 02:24:00,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:24:00,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996844660] [2024-11-28 02:24:00,746 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:24:00,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:24:00,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:24:00,991 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-28 02:24:00,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:24:00,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996844660] [2024-11-28 02:24:00,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996844660] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:24:00,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:24:00,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:24:00,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217105812] [2024-11-28 02:24:00,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:24:00,993 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:24:00,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:24:00,994 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:24:00,994 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:24:00,994 INFO L87 Difference]: Start difference. First operand 20089 states and 33888 transitions. Second operand has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 6 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2024-11-28 02:24:08,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:24:08,074 INFO L93 Difference]: Finished difference Result 78966 states and 137791 transitions. [2024-11-28 02:24:08,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:24:08,075 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 6 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) Word has length 169 [2024-11-28 02:24:08,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:24:08,482 INFO L225 Difference]: With dead ends: 78966 [2024-11-28 02:24:08,482 INFO L226 Difference]: Without dead ends: 58987 [2024-11-28 02:24:08,716 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:24:08,717 INFO L435 NwaCegarLoop]: 891 mSDtfsCounter, 3500 mSDsluCounter, 1328 mSDsCounter, 0 mSdLazyCounter, 3551 mSolverCounterSat, 1104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3539 SdHoareTripleChecker+Valid, 2219 SdHoareTripleChecker+Invalid, 4655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1104 IncrementalHoareTripleChecker+Valid, 3551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:24:08,717 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3539 Valid, 2219 Invalid, 4655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1104 Valid, 3551 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-28 02:24:08,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58987 states. [2024-11-28 02:24:13,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58987 to 53198. [2024-11-28 02:24:13,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53198 states, 37711 states have (on average 1.5841531648590597) internal successors, (59740), 39431 states have internal predecessors, (59740), 13414 states have call successors, (13414), 1044 states have call predecessors, (13414), 2072 states have return successors, (18822), 14009 states have call predecessors, (18822), 13409 states have call successors, (18822) [2024-11-28 02:24:14,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53198 states to 53198 states and 91976 transitions. [2024-11-28 02:24:14,202 INFO L78 Accepts]: Start accepts. Automaton has 53198 states and 91976 transitions. Word has length 169 [2024-11-28 02:24:14,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:24:14,207 INFO L471 AbstractCegarLoop]: Abstraction has 53198 states and 91976 transitions. [2024-11-28 02:24:14,207 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 6 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2024-11-28 02:24:14,207 INFO L276 IsEmpty]: Start isEmpty. Operand 53198 states and 91976 transitions. [2024-11-28 02:24:14,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-11-28 02:24:14,246 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:24:14,250 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:24:14,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-11-28 02:24:14,250 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:24:14,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:24:14,252 INFO L85 PathProgramCache]: Analyzing trace with hash -76982479, now seen corresponding path program 1 times [2024-11-28 02:24:14,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:24:14,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089591108] [2024-11-28 02:24:14,252 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:24:14,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:24:14,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:24:15,590 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-28 02:24:15,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:24:15,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089591108] [2024-11-28 02:24:15,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089591108] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:24:15,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:24:15,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:24:15,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877925863] [2024-11-28 02:24:15,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:24:15,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:24:15,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:24:15,595 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:24:15,595 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:24:15,595 INFO L87 Difference]: Start difference. First operand 53198 states and 91976 transitions. Second operand has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 6 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2024-11-28 02:24:35,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:24:35,321 INFO L93 Difference]: Finished difference Result 228871 states and 409358 transitions. [2024-11-28 02:24:35,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:24:35,321 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 6 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) Word has length 170 [2024-11-28 02:24:35,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:24:36,482 INFO L225 Difference]: With dead ends: 228871 [2024-11-28 02:24:36,483 INFO L226 Difference]: Without dead ends: 175807 [2024-11-28 02:24:36,694 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:24:36,694 INFO L435 NwaCegarLoop]: 897 mSDtfsCounter, 3512 mSDsluCounter, 1343 mSDsCounter, 0 mSdLazyCounter, 3560 mSolverCounterSat, 1106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3552 SdHoareTripleChecker+Valid, 2240 SdHoareTripleChecker+Invalid, 4666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1106 IncrementalHoareTripleChecker+Valid, 3560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-28 02:24:36,695 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3552 Valid, 2240 Invalid, 4666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1106 Valid, 3560 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-28 02:24:36,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175807 states.