./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec1_product22.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_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/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_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec1_product22.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/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_0b53a671-4bc4-401d-9483-97665b11372a/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 f0289d2bc768d77152556c65688d1c231999d9919b651d65a3b9e8da8ee9b3f9 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:34:12,541 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:34:12,628 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 04:34:12,633 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:34:12,633 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:34:12,657 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:34:12,658 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:34:12,658 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:34:12,659 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:34:12,659 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:34:12,659 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:34:12,659 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:34:12,660 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:34:12,660 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:34:12,660 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:34:12,660 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:34:12,660 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:34:12,660 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:34:12,661 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:34:12,661 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:34:12,663 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:34:12,664 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:34:12,664 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:34:12,664 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:34:12,664 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:34:12,664 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:34:12,664 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:34:12,664 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:34:12,664 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:34:12,664 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:34:12,665 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:34:12,665 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:34:12,665 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:34:12,665 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:34:12,665 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:34:12,665 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:34:12,665 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:34:12,665 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:34:12,666 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:34:12,666 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:34:12,666 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 04:34:12,666 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 04:34:12,666 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:34:12,666 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:34:12,666 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:34:12,666 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:34:12,666 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:34:12,666 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:34:12,666 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_0b53a671-4bc4-401d-9483-97665b11372a/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 -> f0289d2bc768d77152556c65688d1c231999d9919b651d65a3b9e8da8ee9b3f9 [2024-11-28 04:34:13,017 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:34:13,030 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:34:13,033 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:34:13,036 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:34:13,036 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:34:13,039 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/product-lines/elevator_spec1_product22.cil.c [2024-11-28 04:34:16,091 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/data/99c3f4d47/b688b45b28b346c0b29c1b2c232bc0df/FLAG1778b7232 [2024-11-28 04:34:16,580 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:34:16,581 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/sv-benchmarks/c/product-lines/elevator_spec1_product22.cil.c [2024-11-28 04:34:16,606 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/data/99c3f4d47/b688b45b28b346c0b29c1b2c232bc0df/FLAG1778b7232 [2024-11-28 04:34:16,627 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/data/99c3f4d47/b688b45b28b346c0b29c1b2c232bc0df [2024-11-28 04:34:16,630 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:34:16,633 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:34:16,635 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:34:16,636 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:34:16,644 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:34:16,645 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:34:16" (1/1) ... [2024-11-28 04:34:16,646 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c395bce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:34:16, skipping insertion in model container [2024-11-28 04:34:16,646 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:34:16" (1/1) ... [2024-11-28 04:34:16,726 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:34:17,081 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_0b53a671-4bc4-401d-9483-97665b11372a/sv-benchmarks/c/product-lines/elevator_spec1_product22.cil.c[27271,27284] [2024-11-28 04:34:17,322 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:34:17,337 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:34:17,350 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [48] [2024-11-28 04:34:17,351 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [414] [2024-11-28 04:34:17,352 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [1087] [2024-11-28 04:34:17,353 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [1096] [2024-11-28 04:34:17,353 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [1197] [2024-11-28 04:34:17,353 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [1554] [2024-11-28 04:34:17,353 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [1567] [2024-11-28 04:34:17,354 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [1687] [2024-11-28 04:34:17,354 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1722] [2024-11-28 04:34:17,355 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification1_spec.i","") [3280] [2024-11-28 04:34:17,437 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_0b53a671-4bc4-401d-9483-97665b11372a/sv-benchmarks/c/product-lines/elevator_spec1_product22.cil.c[27271,27284] [2024-11-28 04:34:17,529 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:34:17,570 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:34:17,571 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:34:17 WrapperNode [2024-11-28 04:34:17,571 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:34:17,572 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:34:17,573 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:34:17,573 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:34:17,579 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:34:17" (1/1) ... [2024-11-28 04:34:17,607 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:34:17" (1/1) ... [2024-11-28 04:34:17,646 INFO L138 Inliner]: procedures = 94, calls = 346, calls flagged for inlining = 26, calls inlined = 22, statements flattened = 863 [2024-11-28 04:34:17,646 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:34:17,647 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:34:17,647 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:34:17,647 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:34:17,658 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:34:17" (1/1) ... [2024-11-28 04:34:17,658 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:34:17" (1/1) ... [2024-11-28 04:34:17,672 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:34:17" (1/1) ... [2024-11-28 04:34:17,703 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 04:34:17,703 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:34:17" (1/1) ... [2024-11-28 04:34:17,704 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:34:17" (1/1) ... [2024-11-28 04:34:17,723 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:34:17" (1/1) ... [2024-11-28 04:34:17,725 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:34:17" (1/1) ... [2024-11-28 04:34:17,738 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:34:17" (1/1) ... [2024-11-28 04:34:17,743 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:34:17" (1/1) ... [2024-11-28 04:34:17,747 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:34:17" (1/1) ... [2024-11-28 04:34:17,761 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:34:17,762 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:34:17,762 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:34:17,762 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:34:17,763 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:34:17" (1/1) ... [2024-11-28 04:34:17,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:34:17,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:34:17,838 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:34:17,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:34:17,886 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2024-11-28 04:34:17,886 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2024-11-28 04:34:17,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:34:17,886 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2024-11-28 04:34:17,886 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2024-11-28 04:34:17,887 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2024-11-28 04:34:17,887 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2024-11-28 04:34:17,887 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-11-28 04:34:17,887 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-11-28 04:34:17,887 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-11-28 04:34:17,887 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-11-28 04:34:17,887 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-11-28 04:34:17,887 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-11-28 04:34:17,887 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-28 04:34:17,887 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-28 04:34:17,887 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-28 04:34:17,888 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-28 04:34:17,888 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2024-11-28 04:34:17,888 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2024-11-28 04:34:17,888 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-11-28 04:34:17,888 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-11-28 04:34:17,888 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-11-28 04:34:17,888 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-11-28 04:34:17,888 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-11-28 04:34:17,888 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-11-28 04:34:17,888 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-11-28 04:34:17,888 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-11-28 04:34:17,888 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2024-11-28 04:34:17,888 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2024-11-28 04:34:17,889 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-11-28 04:34:17,889 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-11-28 04:34:17,889 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-11-28 04:34:17,889 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-11-28 04:34:17,889 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-11-28 04:34:17,889 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-11-28 04:34:17,889 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-11-28 04:34:17,889 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-11-28 04:34:17,889 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-11-28 04:34:17,890 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-11-28 04:34:17,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:34:17,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 04:34:17,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 04:34:17,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-28 04:34:17,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-28 04:34:17,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-28 04:34:17,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-28 04:34:17,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-28 04:34:17,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-28 04:34:17,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-28 04:34:17,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-28 04:34:17,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-28 04:34:17,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-28 04:34:17,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-28 04:34:17,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-11-28 04:34:17,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-11-28 04:34:17,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-11-28 04:34:17,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-11-28 04:34:17,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2024-11-28 04:34:17,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2024-11-28 04:34:17,893 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2024-11-28 04:34:17,893 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2024-11-28 04:34:17,893 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-11-28 04:34:17,893 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-11-28 04:34:17,893 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-11-28 04:34:17,893 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-11-28 04:34:17,894 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-11-28 04:34:17,894 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-11-28 04:34:17,894 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull [2024-11-28 04:34:17,895 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull [2024-11-28 04:34:17,895 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2024-11-28 04:34:17,895 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2024-11-28 04:34:17,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:34:17,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:34:17,896 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-11-28 04:34:17,896 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-11-28 04:34:18,158 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:34:18,160 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:34:19,890 INFO L? ?]: Removed 450 outVars from TransFormulas that were not future-live. [2024-11-28 04:34:19,891 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:34:19,928 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:34:19,932 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 04:34:19,933 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:34:19 BoogieIcfgContainer [2024-11-28 04:34:19,933 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:34:19,936 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:34:19,936 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:34:19,946 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:34:19,946 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:34:16" (1/3) ... [2024-11-28 04:34:19,948 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cb56272 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:34:19, skipping insertion in model container [2024-11-28 04:34:19,948 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:34:17" (2/3) ... [2024-11-28 04:34:19,948 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cb56272 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:34:19, skipping insertion in model container [2024-11-28 04:34:19,949 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:34:19" (3/3) ... [2024-11-28 04:34:19,951 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product22.cil.c [2024-11-28 04:34:19,968 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:34:19,971 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec1_product22.cil.c that has 27 procedures, 578 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-28 04:34:20,082 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:34:20,099 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;@24611d97, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:34:20,100 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 04:34:20,107 INFO L276 IsEmpty]: Start isEmpty. Operand has 578 states, 449 states have (on average 1.688195991091314) internal successors, (758), 472 states have internal predecessors, (758), 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 04:34:20,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-28 04:34:20,131 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:34:20,131 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 04:34:20,132 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:34:20,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:34:20,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1459709573, now seen corresponding path program 1 times [2024-11-28 04:34:20,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:34:20,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248677184] [2024-11-28 04:34:20,148 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:34:20,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:34:20,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:34:20,970 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 04:34:20,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:34:20,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248677184] [2024-11-28 04:34:20,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248677184] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:34:20,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603566821] [2024-11-28 04:34:20,974 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:34:20,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:34:20,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:34:20,979 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:34:20,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 04:34:21,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:34:21,551 INFO L256 TraceCheckSpWp]: Trace formula consists of 1721 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-28 04:34:21,562 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:34:21,594 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 04:34:21,594 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:34:21,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603566821] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:34:21,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:34:21,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 4 [2024-11-28 04:34:21,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175045434] [2024-11-28 04:34:21,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:34:21,603 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 04:34:21,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:34:21,629 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 04:34:21,630 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:34:21,633 INFO L87 Difference]: Start difference. First operand has 578 states, 449 states have (on average 1.688195991091314) internal successors, (758), 472 states have internal predecessors, (758), 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 04:34:21,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:34:21,726 INFO L93 Difference]: Finished difference Result 599 states and 990 transitions. [2024-11-28 04:34:21,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 04:34:21,727 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 04:34:21,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:34:21,746 INFO L225 Difference]: With dead ends: 599 [2024-11-28 04:34:21,746 INFO L226 Difference]: Without dead ends: 570 [2024-11-28 04:34:21,750 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 04:34:21,753 INFO L435 NwaCegarLoop]: 951 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, 951 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 04:34:21,754 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 951 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:34:21,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2024-11-28 04:34:21,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 570. [2024-11-28 04:34:21,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 443 states have (on average 1.6862302483069977) internal successors, (747), 464 states have internal predecessors, (747), 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 04:34:21,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 944 transitions. [2024-11-28 04:34:21,853 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 944 transitions. Word has length 83 [2024-11-28 04:34:21,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:34:21,855 INFO L471 AbstractCegarLoop]: Abstraction has 570 states and 944 transitions. [2024-11-28 04:34:21,855 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 04:34:21,856 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 944 transitions. [2024-11-28 04:34:21,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-28 04:34:21,861 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:34:21,861 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 04:34:21,874 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 04:34:22,066 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-28 04:34:22,066 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:34:22,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:34:22,067 INFO L85 PathProgramCache]: Analyzing trace with hash -105446697, now seen corresponding path program 1 times [2024-11-28 04:34:22,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:34:22,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585874794] [2024-11-28 04:34:22,067 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:34:22,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:34:22,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:34:22,467 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 04:34:22,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:34:22,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585874794] [2024-11-28 04:34:22,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585874794] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:34:22,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [668156602] [2024-11-28 04:34:22,468 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:34:22,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:34:22,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:34:22,472 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:34:22,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 04:34:22,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:34:22,950 INFO L256 TraceCheckSpWp]: Trace formula consists of 1723 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:34:22,961 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:34:23,025 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 04:34:23,025 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:34:23,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [668156602] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:34:23,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:34:23,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-28 04:34:23,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757361752] [2024-11-28 04:34:23,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:34:23,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:34:23,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:34:23,031 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:34:23,031 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:34:23,032 INFO L87 Difference]: Start difference. First operand 570 states and 944 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 04:34:23,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:34:23,183 INFO L93 Difference]: Finished difference Result 1131 states and 1880 transitions. [2024-11-28 04:34:23,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:34:23,190 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 04:34:23,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:34:23,201 INFO L225 Difference]: With dead ends: 1131 [2024-11-28 04:34:23,201 INFO L226 Difference]: Without dead ends: 570 [2024-11-28 04:34:23,208 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 04:34:23,209 INFO L435 NwaCegarLoop]: 932 mSDtfsCounter, 5 mSDsluCounter, 1858 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2790 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 04:34:23,210 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2790 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:34:23,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2024-11-28 04:34:23,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 570. [2024-11-28 04:34:23,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 443 states have (on average 1.6839729119638827) internal successors, (746), 464 states have internal predecessors, (746), 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 04:34:23,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 943 transitions. [2024-11-28 04:34:23,256 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 943 transitions. Word has length 84 [2024-11-28 04:34:23,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:34:23,258 INFO L471 AbstractCegarLoop]: Abstraction has 570 states and 943 transitions. [2024-11-28 04:34:23,258 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 04:34:23,258 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 943 transitions. [2024-11-28 04:34:23,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-28 04:34:23,262 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:34:23,262 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 04:34:23,273 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 04:34:23,462 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:34:23,463 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:34:23,463 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:34:23,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1762017825, now seen corresponding path program 1 times [2024-11-28 04:34:23,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:34:23,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625347842] [2024-11-28 04:34:23,464 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:34:23,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:34:23,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:34:23,745 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 04:34:23,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:34:23,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625347842] [2024-11-28 04:34:23,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625347842] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:34:23,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881008857] [2024-11-28 04:34:23,746 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:34:23,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:34:23,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:34:23,752 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:34:23,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 04:34:24,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:34:24,187 INFO L256 TraceCheckSpWp]: Trace formula consists of 1725 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:34:24,192 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:34:24,224 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 04:34:24,224 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:34:24,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [881008857] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:34:24,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:34:24,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-28 04:34:24,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726812097] [2024-11-28 04:34:24,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:34:24,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:34:24,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:34:24,226 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:34:24,226 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:34:24,226 INFO L87 Difference]: Start difference. First operand 570 states and 943 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 04:34:24,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:34:24,311 INFO L93 Difference]: Finished difference Result 1131 states and 1878 transitions. [2024-11-28 04:34:24,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:34:24,312 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 04:34:24,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:34:24,322 INFO L225 Difference]: With dead ends: 1131 [2024-11-28 04:34:24,322 INFO L226 Difference]: Without dead ends: 570 [2024-11-28 04:34:24,328 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 04:34:24,329 INFO L435 NwaCegarLoop]: 932 mSDtfsCounter, 4 mSDsluCounter, 1858 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2790 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 04:34:24,329 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2790 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:34:24,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2024-11-28 04:34:24,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 570. [2024-11-28 04:34:24,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 443 states have (on average 1.6817155756207676) internal successors, (745), 464 states have internal predecessors, (745), 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 04:34:24,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 942 transitions. [2024-11-28 04:34:24,396 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 942 transitions. Word has length 86 [2024-11-28 04:34:24,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:34:24,397 INFO L471 AbstractCegarLoop]: Abstraction has 570 states and 942 transitions. [2024-11-28 04:34:24,397 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 04:34:24,397 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 942 transitions. [2024-11-28 04:34:24,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-28 04:34:24,399 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:34:24,399 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 04:34:24,411 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 04:34:24,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:34:24,604 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:34:24,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:34:24,604 INFO L85 PathProgramCache]: Analyzing trace with hash -490345001, now seen corresponding path program 1 times [2024-11-28 04:34:24,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:34:24,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616039587] [2024-11-28 04:34:24,605 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:34:24,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:34:24,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:34:24,826 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 04:34:24,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:34:24,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616039587] [2024-11-28 04:34:24,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616039587] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:34:24,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283478339] [2024-11-28 04:34:24,826 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:34:24,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:34:24,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:34:24,829 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:34:24,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 04:34:25,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:34:25,262 INFO L256 TraceCheckSpWp]: Trace formula consists of 1727 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:34:25,268 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:34:25,308 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 04:34:25,311 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:34:25,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [283478339] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:34:25,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:34:25,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-28 04:34:25,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698542855] [2024-11-28 04:34:25,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:34:25,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:34:25,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:34:25,313 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:34:25,314 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:34:25,315 INFO L87 Difference]: Start difference. First operand 570 states and 942 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 04:34:25,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:34:25,444 INFO L93 Difference]: Finished difference Result 1138 states and 1885 transitions. [2024-11-28 04:34:25,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:34:25,445 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 04:34:25,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:34:25,453 INFO L225 Difference]: With dead ends: 1138 [2024-11-28 04:34:25,455 INFO L226 Difference]: Without dead ends: 579 [2024-11-28 04:34:25,458 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 04:34:25,459 INFO L435 NwaCegarLoop]: 931 mSDtfsCounter, 13 mSDsluCounter, 1856 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2787 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:34:25,459 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2787 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:34:25,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2024-11-28 04:34:25,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 579. [2024-11-28 04:34:25,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579 states, 451 states have (on average 1.6784922394678492) internal successors, (757), 472 states have internal predecessors, (757), 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 04:34:25,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 954 transitions. [2024-11-28 04:34:25,504 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 954 transitions. Word has length 88 [2024-11-28 04:34:25,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:34:25,505 INFO L471 AbstractCegarLoop]: Abstraction has 579 states and 954 transitions. [2024-11-28 04:34:25,505 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 04:34:25,505 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 954 transitions. [2024-11-28 04:34:25,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-28 04:34:25,510 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:34:25,510 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 04:34:25,522 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-28 04:34:25,714 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:34:25,715 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:34:25,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:34:25,715 INFO L85 PathProgramCache]: Analyzing trace with hash -787474959, now seen corresponding path program 1 times [2024-11-28 04:34:25,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:34:25,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60391405] [2024-11-28 04:34:25,715 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:34:25,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:34:25,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:34:25,924 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 04:34:25,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:34:25,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60391405] [2024-11-28 04:34:25,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60391405] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:34:25,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1833739925] [2024-11-28 04:34:25,924 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:34:25,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:34:25,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:34:25,928 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:34:25,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 04:34:26,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:34:26,341 INFO L256 TraceCheckSpWp]: Trace formula consists of 1728 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:34:26,345 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:34:26,432 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 04:34:26,432 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:34:26,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1833739925] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:34:26,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:34:26,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-28 04:34:26,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76636854] [2024-11-28 04:34:26,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:34:26,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:34:26,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:34:26,437 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:34:26,437 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:34:26,437 INFO L87 Difference]: Start difference. First operand 579 states and 954 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 04:34:26,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:34:26,533 INFO L93 Difference]: Finished difference Result 1140 states and 1886 transitions. [2024-11-28 04:34:26,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:34:26,534 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 04:34:26,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:34:26,539 INFO L225 Difference]: With dead ends: 1140 [2024-11-28 04:34:26,539 INFO L226 Difference]: Without dead ends: 579 [2024-11-28 04:34:26,542 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 04:34:26,543 INFO L435 NwaCegarLoop]: 931 mSDtfsCounter, 11 mSDsluCounter, 1856 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2787 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 04:34:26,543 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2787 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:34:26,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2024-11-28 04:34:26,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 579. [2024-11-28 04:34:26,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579 states, 451 states have (on average 1.6762749445676275) internal successors, (756), 472 states have internal predecessors, (756), 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 04:34:26,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 953 transitions. [2024-11-28 04:34:26,578 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 953 transitions. Word has length 89 [2024-11-28 04:34:26,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:34:26,578 INFO L471 AbstractCegarLoop]: Abstraction has 579 states and 953 transitions. [2024-11-28 04:34:26,578 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 04:34:26,578 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 953 transitions. [2024-11-28 04:34:26,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-28 04:34:26,580 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:34:26,580 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 04:34:26,599 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-28 04:34:26,781 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:34:26,781 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:34:26,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:34:26,782 INFO L85 PathProgramCache]: Analyzing trace with hash 365876627, now seen corresponding path program 1 times [2024-11-28 04:34:26,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:34:26,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145496111] [2024-11-28 04:34:26,782 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:34:26,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:34:26,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:34:26,955 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 04:34:26,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:34:26,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145496111] [2024-11-28 04:34:26,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145496111] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:34:26,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1236590374] [2024-11-28 04:34:26,957 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:34:26,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:34:26,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:34:26,961 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:34:26,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 04:34:27,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:34:27,328 INFO L256 TraceCheckSpWp]: Trace formula consists of 1729 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:34:27,332 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:34:27,369 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 04:34:27,369 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:34:27,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1236590374] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:34:27,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:34:27,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-28 04:34:27,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117575550] [2024-11-28 04:34:27,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:34:27,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:34:27,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:34:27,374 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:34:27,374 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:34:27,374 INFO L87 Difference]: Start difference. First operand 579 states and 953 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 04:34:27,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:34:27,470 INFO L93 Difference]: Finished difference Result 1140 states and 1885 transitions. [2024-11-28 04:34:27,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:34:27,471 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 04:34:27,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:34:27,477 INFO L225 Difference]: With dead ends: 1140 [2024-11-28 04:34:27,477 INFO L226 Difference]: Without dead ends: 579 [2024-11-28 04:34:27,480 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 04:34:27,481 INFO L435 NwaCegarLoop]: 931 mSDtfsCounter, 10 mSDsluCounter, 1856 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2787 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 04:34:27,481 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2787 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:34:27,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2024-11-28 04:34:27,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 579. [2024-11-28 04:34:27,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579 states, 451 states have (on average 1.6740576496674058) internal successors, (755), 472 states have internal predecessors, (755), 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 04:34:27,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 952 transitions. [2024-11-28 04:34:27,511 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 952 transitions. Word has length 90 [2024-11-28 04:34:27,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:34:27,511 INFO L471 AbstractCegarLoop]: Abstraction has 579 states and 952 transitions. [2024-11-28 04:34:27,511 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 04:34:27,511 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 952 transitions. [2024-11-28 04:34:27,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-28 04:34:27,513 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:34:27,514 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 04:34:27,525 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 04:34:27,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-28 04:34:27,718 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:34:27,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:34:27,718 INFO L85 PathProgramCache]: Analyzing trace with hash -760484179, now seen corresponding path program 1 times [2024-11-28 04:34:27,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:34:27,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190388886] [2024-11-28 04:34:27,718 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:34:27,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:34:27,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:34:27,998 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 04:34:27,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:34:27,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190388886] [2024-11-28 04:34:27,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190388886] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:34:27,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175087888] [2024-11-28 04:34:27,999 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:34:27,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:34:27,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:34:28,003 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:34:28,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 04:34:28,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:34:28,381 INFO L256 TraceCheckSpWp]: Trace formula consists of 1730 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 04:34:28,387 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:34:28,466 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 04:34:28,466 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:34:28,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175087888] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:34:28,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:34:28,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2024-11-28 04:34:28,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171676088] [2024-11-28 04:34:28,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:34:28,468 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:34:28,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:34:28,469 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:34:28,469 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-28 04:34:28,469 INFO L87 Difference]: Start difference. First operand 579 states and 952 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 04:34:28,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:34:28,615 INFO L93 Difference]: Finished difference Result 1159 states and 1915 transitions. [2024-11-28 04:34:28,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:34:28,616 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 04:34:28,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:34:28,623 INFO L225 Difference]: With dead ends: 1159 [2024-11-28 04:34:28,623 INFO L226 Difference]: Without dead ends: 602 [2024-11-28 04:34:28,627 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 04:34:28,627 INFO L435 NwaCegarLoop]: 932 mSDtfsCounter, 100 mSDsluCounter, 4574 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 5506 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 04:34:28,628 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 5506 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:34:28,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2024-11-28 04:34:28,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 598. [2024-11-28 04:34:28,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 467 states have (on average 1.6723768736616702) internal successors, (781), 490 states have internal predecessors, (781), 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 04:34:28,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 983 transitions. [2024-11-28 04:34:28,666 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 983 transitions. Word has length 91 [2024-11-28 04:34:28,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:34:28,667 INFO L471 AbstractCegarLoop]: Abstraction has 598 states and 983 transitions. [2024-11-28 04:34:28,667 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 04:34:28,668 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 983 transitions. [2024-11-28 04:34:28,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-28 04:34:28,670 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:34:28,671 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 04:34:28,682 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 04:34:28,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:34:28,876 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:34:28,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:34:28,876 INFO L85 PathProgramCache]: Analyzing trace with hash -316872756, now seen corresponding path program 1 times [2024-11-28 04:34:28,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:34:28,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245788558] [2024-11-28 04:34:28,876 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:34:28,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:34:28,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:34:28,991 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 04:34:28,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:34:28,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245788558] [2024-11-28 04:34:28,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245788558] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:34:28,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289721751] [2024-11-28 04:34:28,992 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:34:28,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:34:28,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:34:28,994 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:34:28,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 04:34:29,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:34:29,373 INFO L256 TraceCheckSpWp]: Trace formula consists of 1729 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:34:29,376 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:34:29,409 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 04:34:29,409 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:34:29,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1289721751] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:34:29,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:34:29,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-28 04:34:29,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670969226] [2024-11-28 04:34:29,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:34:29,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:34:29,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:34:29,411 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:34:29,411 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:34:29,411 INFO L87 Difference]: Start difference. First operand 598 states and 983 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 04:34:29,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:34:29,584 INFO L93 Difference]: Finished difference Result 1215 states and 2016 transitions. [2024-11-28 04:34:29,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:34:29,585 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 04:34:29,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:34:29,591 INFO L225 Difference]: With dead ends: 1215 [2024-11-28 04:34:29,591 INFO L226 Difference]: Without dead ends: 613 [2024-11-28 04:34:29,594 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 04:34:29,595 INFO L435 NwaCegarLoop]: 906 mSDtfsCounter, 76 mSDsluCounter, 1772 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 2678 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 04:34:29,595 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 2678 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:34:29,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2024-11-28 04:34:29,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 598. [2024-11-28 04:34:29,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 467 states have (on average 1.6616702355460387) internal successors, (776), 490 states have internal predecessors, (776), 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 04:34:29,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 978 transitions. [2024-11-28 04:34:29,627 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 978 transitions. Word has length 91 [2024-11-28 04:34:29,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:34:29,627 INFO L471 AbstractCegarLoop]: Abstraction has 598 states and 978 transitions. [2024-11-28 04:34:29,627 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 04:34:29,627 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 978 transitions. [2024-11-28 04:34:29,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-28 04:34:29,629 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:34:29,630 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 04:34:29,641 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-28 04:34:29,830 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:34:29,831 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:34:29,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:34:29,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1135472298, now seen corresponding path program 1 times [2024-11-28 04:34:29,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:34:29,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201262675] [2024-11-28 04:34:29,831 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:34:29,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:34:29,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:34:29,983 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 04:34:29,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:34:29,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201262675] [2024-11-28 04:34:29,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201262675] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:34:29,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601078559] [2024-11-28 04:34:29,984 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:34:29,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:34:29,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:34:29,986 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:34:29,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 04:34:30,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:34:30,416 INFO L256 TraceCheckSpWp]: Trace formula consists of 1731 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:34:30,420 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:34:30,469 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 04:34:30,469 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:34:30,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1601078559] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:34:30,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:34:30,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-28 04:34:30,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164502197] [2024-11-28 04:34:30,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:34:30,470 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:34:30,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:34:30,472 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:34:30,472 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:34:30,472 INFO L87 Difference]: Start difference. First operand 598 states and 978 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 04:34:30,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:34:30,672 INFO L93 Difference]: Finished difference Result 1215 states and 2006 transitions. [2024-11-28 04:34:30,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:34:30,673 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 04:34:30,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:34:30,681 INFO L225 Difference]: With dead ends: 1215 [2024-11-28 04:34:30,681 INFO L226 Difference]: Without dead ends: 613 [2024-11-28 04:34:30,685 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 04:34:30,687 INFO L435 NwaCegarLoop]: 906 mSDtfsCounter, 75 mSDsluCounter, 1772 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 2678 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 04:34:30,688 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 2678 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:34:30,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2024-11-28 04:34:30,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 598. [2024-11-28 04:34:30,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 467 states have (on average 1.6509635974304069) internal successors, (771), 490 states have internal predecessors, (771), 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 04:34:30,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 973 transitions. [2024-11-28 04:34:30,727 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 973 transitions. Word has length 93 [2024-11-28 04:34:30,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:34:30,727 INFO L471 AbstractCegarLoop]: Abstraction has 598 states and 973 transitions. [2024-11-28 04:34:30,727 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 04:34:30,727 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 973 transitions. [2024-11-28 04:34:30,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-28 04:34:30,732 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:34:30,732 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 04:34:30,745 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 04:34:30,932 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:34:30,933 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:34:30,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:34:30,933 INFO L85 PathProgramCache]: Analyzing trace with hash -634205844, now seen corresponding path program 1 times [2024-11-28 04:34:30,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:34:30,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159553550] [2024-11-28 04:34:30,934 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:34:30,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:34:30,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:34:31,051 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 04:34:31,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:34:31,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159553550] [2024-11-28 04:34:31,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159553550] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:34:31,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1671980352] [2024-11-28 04:34:31,052 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:34:31,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:34:31,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:34:31,054 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:34:31,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 04:34:31,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:34:31,430 INFO L256 TraceCheckSpWp]: Trace formula consists of 1733 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:34:31,436 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:34:31,475 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 04:34:31,476 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:34:31,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1671980352] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:34:31,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:34:31,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-28 04:34:31,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485636416] [2024-11-28 04:34:31,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:34:31,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:34:31,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:34:31,479 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:34:31,479 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:34:31,479 INFO L87 Difference]: Start difference. First operand 598 states and 973 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 04:34:31,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:34:31,706 INFO L93 Difference]: Finished difference Result 1266 states and 2078 transitions. [2024-11-28 04:34:31,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:34:31,707 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 04:34:31,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:34:31,714 INFO L225 Difference]: With dead ends: 1266 [2024-11-28 04:34:31,714 INFO L226 Difference]: Without dead ends: 694 [2024-11-28 04:34:31,720 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 04:34:31,721 INFO L435 NwaCegarLoop]: 939 mSDtfsCounter, 130 mSDsluCounter, 1770 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 2709 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 04:34:31,721 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 2709 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:34:31,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2024-11-28 04:34:31,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 649. [2024-11-28 04:34:31,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 649 states, 517 states have (on average 1.6557059961315281) internal successors, (856), 540 states have internal predecessors, (856), 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 04:34:31,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 1057 transitions. [2024-11-28 04:34:31,756 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 1057 transitions. Word has length 95 [2024-11-28 04:34:31,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:34:31,758 INFO L471 AbstractCegarLoop]: Abstraction has 649 states and 1057 transitions. [2024-11-28 04:34:31,758 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 04:34:31,759 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 1057 transitions. [2024-11-28 04:34:31,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-28 04:34:31,762 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:34:31,762 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 04:34:31,774 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-28 04:34:31,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-28 04:34:31,963 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:34:31,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:34:31,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1502716548, now seen corresponding path program 1 times [2024-11-28 04:34:31,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:34:31,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090172671] [2024-11-28 04:34:31,964 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:34:31,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:34:31,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:34:32,184 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 04:34:32,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:34:32,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090172671] [2024-11-28 04:34:32,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090172671] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:34:32,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509438078] [2024-11-28 04:34:32,185 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:34:32,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:34:32,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:34:32,187 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:34:32,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 04:34:32,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:34:32,582 INFO L256 TraceCheckSpWp]: Trace formula consists of 1731 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 04:34:32,586 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:34:32,689 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 04:34:32,689 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:34:32,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1509438078] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:34:32,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:34:32,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2024-11-28 04:34:32,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846816284] [2024-11-28 04:34:32,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:34:32,690 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 04:34:32,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:34:32,691 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 04:34:32,691 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-11-28 04:34:32,691 INFO L87 Difference]: Start difference. First operand 649 states and 1057 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 04:34:32,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:34:32,891 INFO L93 Difference]: Finished difference Result 1228 states and 2007 transitions. [2024-11-28 04:34:32,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 04:34:32,892 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 04:34:32,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:34:32,898 INFO L225 Difference]: With dead ends: 1228 [2024-11-28 04:34:32,898 INFO L226 Difference]: Without dead ends: 671 [2024-11-28 04:34:32,901 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 04:34:32,902 INFO L435 NwaCegarLoop]: 912 mSDtfsCounter, 113 mSDsluCounter, 5383 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 6295 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 04:34:32,902 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 6295 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:34:32,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2024-11-28 04:34:32,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 649. [2024-11-28 04:34:32,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 649 states, 517 states have (on average 1.6557059961315281) internal successors, (856), 540 states have internal predecessors, (856), 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 04:34:32,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 1057 transitions. [2024-11-28 04:34:32,932 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 1057 transitions. Word has length 96 [2024-11-28 04:34:32,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:34:32,933 INFO L471 AbstractCegarLoop]: Abstraction has 649 states and 1057 transitions. [2024-11-28 04:34:32,933 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 04:34:32,933 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 1057 transitions. [2024-11-28 04:34:32,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-28 04:34:32,935 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:34:32,935 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 04:34:32,947 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-28 04:34:33,139 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:34:33,140 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:34:33,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:34:33,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1158810716, now seen corresponding path program 1 times [2024-11-28 04:34:33,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:34:33,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537566230] [2024-11-28 04:34:33,140 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:34:33,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:34:33,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:34:33,258 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 04:34:33,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:34:33,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537566230] [2024-11-28 04:34:33,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537566230] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:34:33,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1673480671] [2024-11-28 04:34:33,259 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:34:33,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:34:33,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:34:33,261 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:34:33,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 04:34:33,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:34:33,654 INFO L256 TraceCheckSpWp]: Trace formula consists of 1734 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:34:33,658 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:34:33,698 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 04:34:33,698 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:34:33,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1673480671] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:34:33,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:34:33,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-28 04:34:33,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50431769] [2024-11-28 04:34:33,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:34:33,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:34:33,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:34:33,701 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:34:33,701 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:34:33,701 INFO L87 Difference]: Start difference. First operand 649 states and 1057 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 04:34:33,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:34:33,926 INFO L93 Difference]: Finished difference Result 1269 states and 2079 transitions. [2024-11-28 04:34:33,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:34:33,927 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 04:34:33,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:34:33,934 INFO L225 Difference]: With dead ends: 1269 [2024-11-28 04:34:33,934 INFO L226 Difference]: Without dead ends: 682 [2024-11-28 04:34:33,936 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 04:34:33,937 INFO L435 NwaCegarLoop]: 938 mSDtfsCounter, 124 mSDsluCounter, 1744 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 2682 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 04:34:33,938 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 2682 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:34:33,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2024-11-28 04:34:33,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 649. [2024-11-28 04:34:33,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 649 states, 517 states have (on average 1.6460348162475822) internal successors, (851), 540 states have internal predecessors, (851), 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 04:34:33,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 1052 transitions. [2024-11-28 04:34:33,969 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 1052 transitions. Word has length 96 [2024-11-28 04:34:33,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:34:33,970 INFO L471 AbstractCegarLoop]: Abstraction has 649 states and 1052 transitions. [2024-11-28 04:34:33,970 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 04:34:33,971 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 1052 transitions. [2024-11-28 04:34:33,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-28 04:34:33,973 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:34:33,974 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 04:34:33,986 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-28 04:34:34,174 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:34:34,175 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:34:34,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:34:34,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1382596675, now seen corresponding path program 1 times [2024-11-28 04:34:34,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:34:34,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980394048] [2024-11-28 04:34:34,176 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:34:34,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:34:34,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:34:34,313 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 04:34:34,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:34:34,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980394048] [2024-11-28 04:34:34,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980394048] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:34:34,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1217716240] [2024-11-28 04:34:34,314 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:34:34,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:34:34,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:34:34,316 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:34:34,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 04:34:34,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:34:34,686 INFO L256 TraceCheckSpWp]: Trace formula consists of 1730 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 04:34:34,692 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:34:34,767 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 04:34:34,767 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:34:34,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1217716240] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:34:34,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:34:34,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2024-11-28 04:34:34,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034259682] [2024-11-28 04:34:34,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:34:34,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:34:34,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:34:34,770 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:34:34,770 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:34:34,770 INFO L87 Difference]: Start difference. First operand 649 states and 1052 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 04:34:34,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:34:34,893 INFO L93 Difference]: Finished difference Result 1163 states and 1899 transitions. [2024-11-28 04:34:34,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:34:34,894 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 04:34:34,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:34:34,901 INFO L225 Difference]: With dead ends: 1163 [2024-11-28 04:34:34,901 INFO L226 Difference]: Without dead ends: 673 [2024-11-28 04:34:34,904 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 92 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 04:34:34,905 INFO L435 NwaCegarLoop]: 925 mSDtfsCounter, 86 mSDsluCounter, 4546 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 5471 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 04:34:34,905 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 5471 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:34:34,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2024-11-28 04:34:34,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 668. [2024-11-28 04:34:34,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 668 states, 533 states have (on average 1.6454033771106942) internal successors, (877), 558 states have internal predecessors, (877), 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 04:34:34,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 1082 transitions. [2024-11-28 04:34:34,937 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 1082 transitions. Word has length 96 [2024-11-28 04:34:34,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:34:34,937 INFO L471 AbstractCegarLoop]: Abstraction has 668 states and 1082 transitions. [2024-11-28 04:34:34,937 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 04:34:34,938 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 1082 transitions. [2024-11-28 04:34:34,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-28 04:34:34,940 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:34:34,940 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 04:34:34,951 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-28 04:34:35,144 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-28 04:34:35,145 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:34:35,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:34:35,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1495186314, now seen corresponding path program 1 times [2024-11-28 04:34:35,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:34:35,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682961739] [2024-11-28 04:34:35,145 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:34:35,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:34:35,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:34:35,247 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 04:34:35,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:34:35,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682961739] [2024-11-28 04:34:35,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682961739] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:34:35,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075020758] [2024-11-28 04:34:35,248 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:34:35,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:34:35,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:34:35,250 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:34:35,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-28 04:34:35,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:34:35,616 INFO L256 TraceCheckSpWp]: Trace formula consists of 1731 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 04:34:35,620 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:34:35,692 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 04:34:35,693 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:34:35,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2075020758] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:34:35,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:34:35,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2024-11-28 04:34:35,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081360306] [2024-11-28 04:34:35,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:34:35,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:34:35,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:34:35,695 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:34:35,695 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:34:35,696 INFO L87 Difference]: Start difference. First operand 668 states and 1082 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 04:34:35,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:34:35,814 INFO L93 Difference]: Finished difference Result 1193 states and 1950 transitions. [2024-11-28 04:34:35,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:34:35,815 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 04:34:35,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:34:35,822 INFO L225 Difference]: With dead ends: 1193 [2024-11-28 04:34:35,822 INFO L226 Difference]: Without dead ends: 703 [2024-11-28 04:34:35,825 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 04:34:35,826 INFO L435 NwaCegarLoop]: 925 mSDtfsCounter, 95 mSDsluCounter, 4536 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 5461 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 04:34:35,826 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 5461 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:34:35,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2024-11-28 04:34:35,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 668. [2024-11-28 04:34:35,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 668 states, 533 states have (on average 1.6454033771106942) internal successors, (877), 558 states have internal predecessors, (877), 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 04:34:35,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 1082 transitions. [2024-11-28 04:34:35,861 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 1082 transitions. Word has length 97 [2024-11-28 04:34:35,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:34:35,861 INFO L471 AbstractCegarLoop]: Abstraction has 668 states and 1082 transitions. [2024-11-28 04:34:35,862 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 04:34:35,862 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 1082 transitions. [2024-11-28 04:34:35,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-28 04:34:35,864 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:34:35,864 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 04:34:35,876 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-28 04:34:36,064 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-28 04:34:36,065 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:34:36,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:34:36,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1281495286, now seen corresponding path program 1 times [2024-11-28 04:34:36,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:34:36,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599077867] [2024-11-28 04:34:36,066 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:34:36,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:34:36,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:34:36,212 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 04:34:36,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:34:36,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599077867] [2024-11-28 04:34:36,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599077867] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:34:36,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [319598233] [2024-11-28 04:34:36,212 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:34:36,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:34:36,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:34:36,215 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:34:36,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-28 04:34:36,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:34:36,590 INFO L256 TraceCheckSpWp]: Trace formula consists of 1727 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 04:34:36,594 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:34:36,673 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 04:34:36,674 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:34:36,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [319598233] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:34:36,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:34:36,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2024-11-28 04:34:36,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702866431] [2024-11-28 04:34:36,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:34:36,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 04:34:36,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:34:36,675 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 04:34:36,676 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:34:36,676 INFO L87 Difference]: Start difference. First operand 668 states and 1082 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 04:34:36,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:34:36,853 INFO L93 Difference]: Finished difference Result 1178 states and 1924 transitions. [2024-11-28 04:34:36,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 04:34:36,854 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 04:34:36,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:34:36,859 INFO L225 Difference]: With dead ends: 1178 [2024-11-28 04:34:36,860 INFO L226 Difference]: Without dead ends: 688 [2024-11-28 04:34:36,864 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 04:34:36,864 INFO L435 NwaCegarLoop]: 914 mSDtfsCounter, 113 mSDsluCounter, 5389 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 6303 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 04:34:36,864 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 6303 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:34:36,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2024-11-28 04:34:36,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 668. [2024-11-28 04:34:36,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 668 states, 533 states have (on average 1.6454033771106942) internal successors, (877), 558 states have internal predecessors, (877), 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 04:34:36,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 1082 transitions. [2024-11-28 04:34:36,897 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 1082 transitions. Word has length 97 [2024-11-28 04:34:36,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:34:36,898 INFO L471 AbstractCegarLoop]: Abstraction has 668 states and 1082 transitions. [2024-11-28 04:34:36,898 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 04:34:36,898 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 1082 transitions. [2024-11-28 04:34:36,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-28 04:34:36,900 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:34:36,900 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 04:34:36,911 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-28 04:34:37,104 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:34:37,105 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:34:37,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:34:37,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1116006671, now seen corresponding path program 1 times [2024-11-28 04:34:37,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:34:37,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237964118] [2024-11-28 04:34:37,105 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:34:37,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:34:37,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:34:37,200 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 04:34:37,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:34:37,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237964118] [2024-11-28 04:34:37,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237964118] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:34:37,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610664443] [2024-11-28 04:34:37,201 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:34:37,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:34:37,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:34:37,203 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:34:37,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-28 04:34:37,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:34:37,580 INFO L256 TraceCheckSpWp]: Trace formula consists of 1731 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:34:37,584 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:34:37,611 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 04:34:37,612 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:34:37,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [610664443] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:34:37,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:34:37,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-28 04:34:37,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256014255] [2024-11-28 04:34:37,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:34:37,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:34:37,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:34:37,615 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:34:37,615 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:34:37,615 INFO L87 Difference]: Start difference. First operand 668 states and 1082 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 04:34:37,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:34:37,680 INFO L93 Difference]: Finished difference Result 1230 states and 2009 transitions. [2024-11-28 04:34:37,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:34:37,681 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 04:34:37,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:34:37,687 INFO L225 Difference]: With dead ends: 1230 [2024-11-28 04:34:37,687 INFO L226 Difference]: Without dead ends: 668 [2024-11-28 04:34:37,690 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 04:34:37,691 INFO L435 NwaCegarLoop]: 920 mSDtfsCounter, 13 mSDsluCounter, 1836 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2756 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 04:34:37,691 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2756 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:34:37,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2024-11-28 04:34:37,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 668. [2024-11-28 04:34:37,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 668 states, 533 states have (on average 1.6378986866791745) internal successors, (873), 558 states have internal predecessors, (873), 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 04:34:37,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 1078 transitions. [2024-11-28 04:34:37,722 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 1078 transitions. Word has length 97 [2024-11-28 04:34:37,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:34:37,724 INFO L471 AbstractCegarLoop]: Abstraction has 668 states and 1078 transitions. [2024-11-28 04:34:37,724 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 04:34:37,724 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 1078 transitions. [2024-11-28 04:34:37,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-28 04:34:37,726 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:34:37,726 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 04:34:37,738 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-28 04:34:37,927 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:34:37,927 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:34:37,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:34:37,928 INFO L85 PathProgramCache]: Analyzing trace with hash -633616571, now seen corresponding path program 1 times [2024-11-28 04:34:37,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:34:37,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084615049] [2024-11-28 04:34:37,928 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:34:37,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:34:37,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:34:38,025 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 04:34:38,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:34:38,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084615049] [2024-11-28 04:34:38,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084615049] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:34:38,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322107101] [2024-11-28 04:34:38,025 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:34:38,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:34:38,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:34:38,028 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:34:38,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-28 04:34:38,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:34:38,456 INFO L256 TraceCheckSpWp]: Trace formula consists of 1728 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 04:34:38,460 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:34:38,488 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 04:34:38,488 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:34:38,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [322107101] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:34:38,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:34:38,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-28 04:34:38,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723615270] [2024-11-28 04:34:38,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:34:38,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:34:38,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:34:38,490 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:34:38,490 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:34:38,490 INFO L87 Difference]: Start difference. First operand 668 states and 1078 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 04:34:38,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:34:38,568 INFO L93 Difference]: Finished difference Result 1274 states and 2077 transitions. [2024-11-28 04:34:38,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:34:38,569 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 04:34:38,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:34:38,576 INFO L225 Difference]: With dead ends: 1274 [2024-11-28 04:34:38,576 INFO L226 Difference]: Without dead ends: 692 [2024-11-28 04:34:38,580 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 04:34:38,582 INFO L435 NwaCegarLoop]: 914 mSDtfsCounter, 7 mSDsluCounter, 1815 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2729 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:34:38,582 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2729 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:34:38,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692 states. [2024-11-28 04:34:38,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 692. [2024-11-28 04:34:38,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 557 states have (on average 1.6175942549371634) internal successors, (901), 582 states have internal predecessors, (901), 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 04:34:38,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1106 transitions. [2024-11-28 04:34:38,626 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1106 transitions. Word has length 98 [2024-11-28 04:34:38,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:34:38,627 INFO L471 AbstractCegarLoop]: Abstraction has 692 states and 1106 transitions. [2024-11-28 04:34:38,627 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 04:34:38,627 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1106 transitions. [2024-11-28 04:34:38,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-28 04:34:38,630 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:34:38,630 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 04:34:38,642 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-28 04:34:38,834 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-28 04:34:38,835 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:34:38,835 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:34:38,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1073365364, now seen corresponding path program 1 times [2024-11-28 04:34:38,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:34:38,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178153913] [2024-11-28 04:34:38,835 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:34:38,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:34:38,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:34:38,960 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 04:34:38,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:34:38,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178153913] [2024-11-28 04:34:38,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178153913] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:34:38,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1193400885] [2024-11-28 04:34:38,961 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:34:38,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:34:38,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:34:38,963 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:34:38,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-28 04:34:39,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:34:39,318 INFO L256 TraceCheckSpWp]: Trace formula consists of 1729 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 04:34:39,322 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:34:39,408 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 04:34:39,412 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:34:39,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1193400885] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:34:39,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:34:39,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2024-11-28 04:34:39,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970149094] [2024-11-28 04:34:39,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:34:39,413 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 04:34:39,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:34:39,413 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 04:34:39,413 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:34:39,414 INFO L87 Difference]: Start difference. First operand 692 states and 1106 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 04:34:39,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:34:39,586 INFO L93 Difference]: Finished difference Result 1208 states and 1956 transitions. [2024-11-28 04:34:39,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 04:34:39,587 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 04:34:39,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:34:39,593 INFO L225 Difference]: With dead ends: 1208 [2024-11-28 04:34:39,593 INFO L226 Difference]: Without dead ends: 718 [2024-11-28 04:34:39,596 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 04:34:39,597 INFO L435 NwaCegarLoop]: 908 mSDtfsCounter, 119 mSDsluCounter, 5351 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 6259 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 04:34:39,597 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 6259 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:34:39,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2024-11-28 04:34:39,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 692. [2024-11-28 04:34:39,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 557 states have (on average 1.6175942549371634) internal successors, (901), 582 states have internal predecessors, (901), 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 04:34:39,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1106 transitions. [2024-11-28 04:34:39,625 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1106 transitions. Word has length 99 [2024-11-28 04:34:39,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:34:39,625 INFO L471 AbstractCegarLoop]: Abstraction has 692 states and 1106 transitions. [2024-11-28 04:34:39,626 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 04:34:39,626 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1106 transitions. [2024-11-28 04:34:39,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-28 04:34:39,630 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:34:39,631 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 04:34:39,642 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-28 04:34:39,831 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-28 04:34:39,831 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:34:39,832 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:34:39,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1344587658, now seen corresponding path program 1 times [2024-11-28 04:34:39,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:34:39,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426879837] [2024-11-28 04:34:39,832 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:34:39,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:34:39,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:34:39,924 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 04:34:39,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:34:39,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426879837] [2024-11-28 04:34:39,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426879837] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:34:39,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817244593] [2024-11-28 04:34:39,925 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:34:39,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:34:39,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:34:39,927 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:34:39,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-28 04:34:40,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:34:40,303 INFO L256 TraceCheckSpWp]: Trace formula consists of 1732 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 04:34:40,309 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:34:40,831 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 04:34:40,831 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:34:40,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1817244593] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:34:40,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:34:40,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4] total 9 [2024-11-28 04:34:40,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443134278] [2024-11-28 04:34:40,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:34:40,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:34:40,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:34:40,833 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:34:40,833 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:34:40,833 INFO L87 Difference]: Start difference. First operand 692 states and 1106 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 04:34:44,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:34:44,954 INFO L93 Difference]: Finished difference Result 2252 states and 3723 transitions. [2024-11-28 04:34:44,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:34:44,955 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 04:34:44,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:34:44,968 INFO L225 Difference]: With dead ends: 2252 [2024-11-28 04:34:44,968 INFO L226 Difference]: Without dead ends: 1767 [2024-11-28 04:34:44,972 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 04:34:44,972 INFO L435 NwaCegarLoop]: 595 mSDtfsCounter, 2870 mSDsluCounter, 1074 mSDsCounter, 0 mSdLazyCounter, 3854 mSolverCounterSat, 537 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3052 SdHoareTripleChecker+Valid, 1669 SdHoareTripleChecker+Invalid, 4391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 537 IncrementalHoareTripleChecker+Valid, 3854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2024-11-28 04:34:44,972 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3052 Valid, 1669 Invalid, 4391 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [537 Valid, 3854 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2024-11-28 04:34:44,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1767 states. [2024-11-28 04:34:45,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1767 to 1580. [2024-11-28 04:34:45,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1580 states, 1258 states have (on average 1.6597774244833068) internal successors, (2088), 1301 states have internal predecessors, (2088), 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 04:34:45,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 2609 transitions. [2024-11-28 04:34:45,114 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 2609 transitions. Word has length 99 [2024-11-28 04:34:45,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:34:45,114 INFO L471 AbstractCegarLoop]: Abstraction has 1580 states and 2609 transitions. [2024-11-28 04:34:45,114 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 04:34:45,114 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 2609 transitions. [2024-11-28 04:34:45,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-11-28 04:34:45,122 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:34:45,122 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 04:34:45,134 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-28 04:34:45,322 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:34:45,323 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:34:45,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:34:45,323 INFO L85 PathProgramCache]: Analyzing trace with hash -1248155968, now seen corresponding path program 1 times [2024-11-28 04:34:45,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:34:45,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092899443] [2024-11-28 04:34:45,323 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:34:45,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:34:45,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:34:45,487 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 04:34:45,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:34:45,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092899443] [2024-11-28 04:34:45,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092899443] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:34:45,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89267200] [2024-11-28 04:34:45,487 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:34:45,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:34:45,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:34:45,489 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:34:45,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-28 04:34:45,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:34:45,932 INFO L256 TraceCheckSpWp]: Trace formula consists of 2076 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 04:34:45,937 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:34:45,969 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 04:34:45,969 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:34:45,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [89267200] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:34:45,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:34:45,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2024-11-28 04:34:45,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496632] [2024-11-28 04:34:45,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:34:45,971 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:34:45,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:34:45,971 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:34:45,971 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:34:45,972 INFO L87 Difference]: Start difference. First operand 1580 states and 2609 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 04:34:46,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:34:46,055 INFO L93 Difference]: Finished difference Result 2961 states and 4936 transitions. [2024-11-28 04:34:46,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:34:46,055 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 04:34:46,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:34:46,066 INFO L225 Difference]: With dead ends: 2961 [2024-11-28 04:34:46,066 INFO L226 Difference]: Without dead ends: 1589 [2024-11-28 04:34:46,072 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 04:34:46,073 INFO L435 NwaCegarLoop]: 927 mSDtfsCounter, 0 mSDsluCounter, 2773 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3700 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 04:34:46,073 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3700 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:34:46,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1589 states. [2024-11-28 04:34:46,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1589 to 1589. [2024-11-28 04:34:46,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1589 states, 1267 states have (on average 1.6550907655880032) internal successors, (2097), 1310 states have internal predecessors, (2097), 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 04:34:46,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1589 states to 1589 states and 2618 transitions. [2024-11-28 04:34:46,153 INFO L78 Accepts]: Start accepts. Automaton has 1589 states and 2618 transitions. Word has length 138 [2024-11-28 04:34:46,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:34:46,154 INFO L471 AbstractCegarLoop]: Abstraction has 1589 states and 2618 transitions. [2024-11-28 04:34:46,154 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 04:34:46,154 INFO L276 IsEmpty]: Start isEmpty. Operand 1589 states and 2618 transitions. [2024-11-28 04:34:46,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-28 04:34:46,159 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:34:46,159 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 04:34:46,171 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-28 04:34:46,360 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:34:46,360 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:34:46,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:34:46,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1156104562, now seen corresponding path program 1 times [2024-11-28 04:34:46,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:34:46,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596382194] [2024-11-28 04:34:46,361 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:34:46,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:34:46,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:34:46,497 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 04:34:46,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:34:46,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596382194] [2024-11-28 04:34:46,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596382194] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:34:46,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1959225759] [2024-11-28 04:34:46,497 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:34:46,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:34:46,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:34:46,500 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:34:46,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-28 04:34:46,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:34:46,999 INFO L256 TraceCheckSpWp]: Trace formula consists of 2083 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 04:34:47,004 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:34:47,171 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 04:34:47,172 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:34:47,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1959225759] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:34:47,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:34:47,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2024-11-28 04:34:47,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042161355] [2024-11-28 04:34:47,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:34:47,174 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 04:34:47,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:34:47,174 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 04:34:47,174 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:34:47,175 INFO L87 Difference]: Start difference. First operand 1589 states and 2618 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 04:34:50,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:34:50,833 INFO L93 Difference]: Finished difference Result 4252 states and 7059 transitions. [2024-11-28 04:34:50,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 04:34:50,834 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 04:34:50,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:34:50,856 INFO L225 Difference]: With dead ends: 4252 [2024-11-28 04:34:50,856 INFO L226 Difference]: Without dead ends: 2704 [2024-11-28 04:34:50,927 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 04:34:50,927 INFO L435 NwaCegarLoop]: 464 mSDtfsCounter, 1696 mSDsluCounter, 1802 mSDsCounter, 0 mSdLazyCounter, 5098 mSolverCounterSat, 251 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1789 SdHoareTripleChecker+Valid, 2266 SdHoareTripleChecker+Invalid, 5349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 251 IncrementalHoareTripleChecker+Valid, 5098 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:34:50,928 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1789 Valid, 2266 Invalid, 5349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [251 Valid, 5098 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-28 04:34:50,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2704 states. [2024-11-28 04:34:51,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2704 to 2479. [2024-11-28 04:34:51,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2479 states, 1950 states have (on average 1.6374358974358973) internal successors, (3193), 2002 states have internal predecessors, (3193), 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 04:34:51,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2479 states to 2479 states and 4076 transitions. [2024-11-28 04:34:51,065 INFO L78 Accepts]: Start accepts. Automaton has 2479 states and 4076 transitions. Word has length 140 [2024-11-28 04:34:51,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:34:51,066 INFO L471 AbstractCegarLoop]: Abstraction has 2479 states and 4076 transitions. [2024-11-28 04:34:51,066 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 04:34:51,066 INFO L276 IsEmpty]: Start isEmpty. Operand 2479 states and 4076 transitions. [2024-11-28 04:34:51,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-28 04:34:51,072 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:34:51,073 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 04:34:51,085 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-28 04:34:51,276 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-28 04:34:51,277 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:34:51,277 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:34:51,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1914828772, now seen corresponding path program 1 times [2024-11-28 04:34:51,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:34:51,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643001894] [2024-11-28 04:34:51,277 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:34:51,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:34:51,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:34:51,414 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 04:34:51,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:34:51,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643001894] [2024-11-28 04:34:51,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643001894] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:34:51,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1912832080] [2024-11-28 04:34:51,415 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:34:51,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:34:51,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:34:51,417 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:34:51,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-28 04:34:51,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:34:51,851 INFO L256 TraceCheckSpWp]: Trace formula consists of 2083 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 04:34:51,854 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:34:52,072 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 04:34:52,072 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:34:52,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1912832080] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:34:52,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:34:52,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-11-28 04:34:52,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107353253] [2024-11-28 04:34:52,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:34:52,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:34:52,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:34:52,075 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:34:52,075 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:34:52,075 INFO L87 Difference]: Start difference. First operand 2479 states and 4076 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 04:34:52,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:34:52,547 INFO L93 Difference]: Finished difference Result 2591 states and 4263 transitions. [2024-11-28 04:34:52,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:34:52,552 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 04:34:52,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:34:52,571 INFO L225 Difference]: With dead ends: 2591 [2024-11-28 04:34:52,571 INFO L226 Difference]: Without dead ends: 2576 [2024-11-28 04:34:52,574 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:34:52,577 INFO L435 NwaCegarLoop]: 920 mSDtfsCounter, 892 mSDsluCounter, 760 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 900 SdHoareTripleChecker+Valid, 1680 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 04:34:52,577 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [900 Valid, 1680 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 04:34:52,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2576 states. [2024-11-28 04:34:52,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2576 to 2485. [2024-11-28 04:34:52,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2485 states, 1956 states have (on average 1.635480572597137) internal successors, (3199), 2008 states have internal predecessors, (3199), 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 04:34:52,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2485 states to 2485 states and 4082 transitions. [2024-11-28 04:34:52,813 INFO L78 Accepts]: Start accepts. Automaton has 2485 states and 4082 transitions. Word has length 141 [2024-11-28 04:34:52,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:34:52,814 INFO L471 AbstractCegarLoop]: Abstraction has 2485 states and 4082 transitions. [2024-11-28 04:34:52,815 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 04:34:52,815 INFO L276 IsEmpty]: Start isEmpty. Operand 2485 states and 4082 transitions. [2024-11-28 04:34:52,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-28 04:34:52,823 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:34:52,823 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 04:34:52,836 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-28 04:34:53,024 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-28 04:34:53,024 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:34:53,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:34:53,025 INFO L85 PathProgramCache]: Analyzing trace with hash 732025855, now seen corresponding path program 1 times [2024-11-28 04:34:53,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:34:53,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65752277] [2024-11-28 04:34:53,025 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:34:53,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:34:53,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:34:53,182 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 04:34:53,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:34:53,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65752277] [2024-11-28 04:34:53,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65752277] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:34:53,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100196705] [2024-11-28 04:34:53,183 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:34:53,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:34:53,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:34:53,185 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:34:53,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-28 04:34:53,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:34:53,631 INFO L256 TraceCheckSpWp]: Trace formula consists of 2099 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 04:34:53,635 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:34:53,759 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 04:34:53,759 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:34:53,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1100196705] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:34:53,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:34:53,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4] total 8 [2024-11-28 04:34:53,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470372585] [2024-11-28 04:34:53,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:34:53,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:34:53,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:34:53,761 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:34:53,761 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:34:53,761 INFO L87 Difference]: Start difference. First operand 2485 states and 4082 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 04:34:54,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:34:54,193 INFO L93 Difference]: Finished difference Result 2621 states and 4272 transitions. [2024-11-28 04:34:54,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:34:54,194 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 04:34:54,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:34:54,210 INFO L225 Difference]: With dead ends: 2621 [2024-11-28 04:34:54,210 INFO L226 Difference]: Without dead ends: 2606 [2024-11-28 04:34:54,212 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 04:34:54,213 INFO L435 NwaCegarLoop]: 927 mSDtfsCounter, 865 mSDsluCounter, 2720 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 866 SdHoareTripleChecker+Valid, 3647 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:34:54,213 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [866 Valid, 3647 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:34:54,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2606 states. [2024-11-28 04:34:54,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2606 to 2585. [2024-11-28 04:34:54,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2585 states, 2032 states have (on average 1.626476377952756) internal successors, (3305), 2084 states have internal predecessors, (3305), 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 04:34:54,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2585 states to 2585 states and 4223 transitions. [2024-11-28 04:34:54,350 INFO L78 Accepts]: Start accepts. Automaton has 2585 states and 4223 transitions. Word has length 147 [2024-11-28 04:34:54,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:34:54,351 INFO L471 AbstractCegarLoop]: Abstraction has 2585 states and 4223 transitions. [2024-11-28 04:34:54,351 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 04:34:54,351 INFO L276 IsEmpty]: Start isEmpty. Operand 2585 states and 4223 transitions. [2024-11-28 04:34:54,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-11-28 04:34:54,358 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:34:54,358 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 04:34:54,370 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-28 04:34:54,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-28 04:34:54,559 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:34:54,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:34:54,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1367078640, now seen corresponding path program 1 times [2024-11-28 04:34:54,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:34:54,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156143569] [2024-11-28 04:34:54,560 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:34:54,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:34:54,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:34:54,723 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 04:34:54,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:34:54,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156143569] [2024-11-28 04:34:54,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156143569] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:34:54,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010109604] [2024-11-28 04:34:54,723 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:34:54,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:34:54,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:34:54,725 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:34:54,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-28 04:34:55,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:34:55,157 INFO L256 TraceCheckSpWp]: Trace formula consists of 2136 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 04:34:55,159 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:34:55,175 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 04:34:55,176 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:34:55,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1010109604] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:34:55,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:34:55,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-11-28 04:34:55,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252010346] [2024-11-28 04:34:55,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:34:55,176 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:34:55,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:34:55,177 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:34:55,177 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:34:55,177 INFO L87 Difference]: Start difference. First operand 2585 states and 4223 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 04:34:55,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:34:55,314 INFO L93 Difference]: Finished difference Result 5144 states and 8416 transitions. [2024-11-28 04:34:55,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:34:55,315 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 04:34:55,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:34:55,330 INFO L225 Difference]: With dead ends: 5144 [2024-11-28 04:34:55,331 INFO L226 Difference]: Without dead ends: 2554 [2024-11-28 04:34:55,340 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 04:34:55,341 INFO L435 NwaCegarLoop]: 922 mSDtfsCounter, 7 mSDsluCounter, 1837 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2759 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 04:34:55,341 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2759 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:34:55,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2554 states. [2024-11-28 04:34:55,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2554 to 2554. [2024-11-28 04:34:55,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2554 states, 2004 states have (on average 1.62624750499002) internal successors, (3259), 2054 states have internal predecessors, (3259), 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 04:34:55,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2554 states to 2554 states and 4173 transitions. [2024-11-28 04:34:55,477 INFO L78 Accepts]: Start accepts. Automaton has 2554 states and 4173 transitions. Word has length 158 [2024-11-28 04:34:55,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:34:55,479 INFO L471 AbstractCegarLoop]: Abstraction has 2554 states and 4173 transitions. [2024-11-28 04:34:55,479 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 04:34:55,479 INFO L276 IsEmpty]: Start isEmpty. Operand 2554 states and 4173 transitions. [2024-11-28 04:34:55,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-28 04:34:55,487 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:34:55,487 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 04:34:55,500 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-28 04:34:55,687 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:34:55,687 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:34:55,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:34:55,688 INFO L85 PathProgramCache]: Analyzing trace with hash 165079877, now seen corresponding path program 1 times [2024-11-28 04:34:55,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:34:55,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952215163] [2024-11-28 04:34:55,688 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:34:55,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:34:55,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:34:55,904 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 04:34:55,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:34:55,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952215163] [2024-11-28 04:34:55,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952215163] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:34:55,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1104451688] [2024-11-28 04:34:55,905 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:34:55,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:34:55,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:34:55,907 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:34:55,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-28 04:34:56,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:34:56,367 INFO L256 TraceCheckSpWp]: Trace formula consists of 2139 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-28 04:34:56,372 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:34:56,406 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 04:34:56,407 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:34:56,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1104451688] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:34:56,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:34:56,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 7 [2024-11-28 04:34:56,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402489329] [2024-11-28 04:34:56,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:34:56,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:34:56,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:34:56,409 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:34:56,409 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:34:56,409 INFO L87 Difference]: Start difference. First operand 2554 states and 4173 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 04:34:56,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:34:56,585 INFO L93 Difference]: Finished difference Result 5077 states and 8310 transitions. [2024-11-28 04:34:56,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:34:56,586 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 04:34:56,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:34:56,601 INFO L225 Difference]: With dead ends: 5077 [2024-11-28 04:34:56,601 INFO L226 Difference]: Without dead ends: 2554 [2024-11-28 04:34:56,612 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 04:34:56,613 INFO L435 NwaCegarLoop]: 940 mSDtfsCounter, 119 mSDsluCounter, 4574 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 5514 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 04:34:56,614 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 5514 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:34:56,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2554 states. [2024-11-28 04:34:56,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2554 to 2533. [2024-11-28 04:34:56,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2533 states, 1983 states have (on average 1.626323751891074) internal successors, (3225), 2033 states have internal predecessors, (3225), 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 04:34:56,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2533 states to 2533 states and 4139 transitions. [2024-11-28 04:34:56,750 INFO L78 Accepts]: Start accepts. Automaton has 2533 states and 4139 transitions. Word has length 160 [2024-11-28 04:34:56,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:34:56,751 INFO L471 AbstractCegarLoop]: Abstraction has 2533 states and 4139 transitions. [2024-11-28 04:34:56,751 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 04:34:56,751 INFO L276 IsEmpty]: Start isEmpty. Operand 2533 states and 4139 transitions. [2024-11-28 04:34:56,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-11-28 04:34:56,757 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:34:56,757 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 04:34:56,769 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-28 04:34:56,957 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-28 04:34:56,958 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:34:56,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:34:56,959 INFO L85 PathProgramCache]: Analyzing trace with hash -2010328374, now seen corresponding path program 1 times [2024-11-28 04:34:56,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:34:56,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632442876] [2024-11-28 04:34:56,959 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:34:56,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:34:56,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:34:57,160 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 04:34:57,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:34:57,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632442876] [2024-11-28 04:34:57,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632442876] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:34:57,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [242868292] [2024-11-28 04:34:57,161 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:34:57,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:34:57,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:34:57,164 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:34:57,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-28 04:34:57,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:34:57,611 INFO L256 TraceCheckSpWp]: Trace formula consists of 2145 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:34:57,617 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:34:57,672 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 04:34:57,672 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:34:57,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [242868292] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:34:57,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:34:57,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-28 04:34:57,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019289916] [2024-11-28 04:34:57,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:34:57,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:34:57,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:34:57,674 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:34:57,674 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:34:57,675 INFO L87 Difference]: Start difference. First operand 2533 states and 4139 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 04:34:57,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:34:57,923 INFO L93 Difference]: Finished difference Result 5059 states and 8280 transitions. [2024-11-28 04:34:57,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:34:57,923 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 04:34:57,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:34:57,942 INFO L225 Difference]: With dead ends: 5059 [2024-11-28 04:34:57,942 INFO L226 Difference]: Without dead ends: 2557 [2024-11-28 04:34:57,950 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 04:34:57,951 INFO L435 NwaCegarLoop]: 905 mSDtfsCounter, 128 mSDsluCounter, 1733 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 2638 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 04:34:57,952 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 2638 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:34:57,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2557 states. [2024-11-28 04:34:58,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2557 to 2533. [2024-11-28 04:34:58,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2533 states, 1983 states have (on average 1.6258194654563791) internal successors, (3224), 2033 states have internal predecessors, (3224), 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 04:34:58,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2533 states to 2533 states and 4138 transitions. [2024-11-28 04:34:58,090 INFO L78 Accepts]: Start accepts. Automaton has 2533 states and 4138 transitions. Word has length 162 [2024-11-28 04:34:58,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:34:58,090 INFO L471 AbstractCegarLoop]: Abstraction has 2533 states and 4138 transitions. [2024-11-28 04:34:58,090 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 04:34:58,091 INFO L276 IsEmpty]: Start isEmpty. Operand 2533 states and 4138 transitions. [2024-11-28 04:34:58,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-11-28 04:34:58,099 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:34:58,100 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 04:34:58,116 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-11-28 04:34:58,300 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b53a671-4bc4-401d-9483-97665b11372a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-28 04:34:58,302 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:34:58,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:34:58,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1424922018, now seen corresponding path program 1 times [2024-11-28 04:34:58,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:34:58,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421769721] [2024-11-28 04:34:58,303 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:34:58,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:34:58,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:34:58,439 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 04:34:58,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:34:58,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421769721] [2024-11-28 04:34:58,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421769721] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:34:58,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:34:58,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:34:58,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655060695] [2024-11-28 04:34:58,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:34:58,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:34:58,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:34:58,441 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:34:58,441 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:34:58,441 INFO L87 Difference]: Start difference. First operand 2533 states and 4138 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 04:34:58,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:34:58,578 INFO L93 Difference]: Finished difference Result 4994 states and 8189 transitions. [2024-11-28 04:34:58,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:34:58,579 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 04:34:58,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:34:58,602 INFO L225 Difference]: With dead ends: 4994 [2024-11-28 04:34:58,602 INFO L226 Difference]: Without dead ends: 2493 [2024-11-28 04:34:58,611 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 04:34:58,611 INFO L435 NwaCegarLoop]: 920 mSDtfsCounter, 8 mSDsluCounter, 1836 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2756 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 04:34:58,612 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 2756 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:34:58,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2493 states. [2024-11-28 04:34:58,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2493 to 2493. [2024-11-28 04:34:58,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2493 states, 1946 states have (on average 1.6243576567317575) internal successors, (3161), 1994 states have internal predecessors, (3161), 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 04:34:58,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2493 states to 2493 states and 4071 transitions. [2024-11-28 04:34:58,735 INFO L78 Accepts]: Start accepts. Automaton has 2493 states and 4071 transitions. Word has length 163 [2024-11-28 04:34:58,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:34:58,736 INFO L471 AbstractCegarLoop]: Abstraction has 2493 states and 4071 transitions. [2024-11-28 04:34:58,736 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 04:34:58,736 INFO L276 IsEmpty]: Start isEmpty. Operand 2493 states and 4071 transitions. [2024-11-28 04:34:58,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-11-28 04:34:58,741 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:34:58,741 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 04:34:58,742 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-28 04:34:58,742 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:34:58,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:34:58,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1305349310, now seen corresponding path program 1 times [2024-11-28 04:34:58,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:34:58,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282893036] [2024-11-28 04:34:58,743 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:34:58,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:34:58,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:34:59,054 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 04:34:59,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:34:59,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282893036] [2024-11-28 04:34:59,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282893036] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:34:59,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:34:59,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 04:34:59,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704667130] [2024-11-28 04:34:59,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:34:59,056 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:34:59,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:34:59,057 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:34:59,057 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:34:59,057 INFO L87 Difference]: Start difference. First operand 2493 states and 4071 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 04:34:59,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:34:59,291 INFO L93 Difference]: Finished difference Result 4897 states and 8028 transitions. [2024-11-28 04:34:59,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:34:59,292 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 04:34:59,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:34:59,308 INFO L225 Difference]: With dead ends: 4897 [2024-11-28 04:34:59,308 INFO L226 Difference]: Without dead ends: 2479 [2024-11-28 04:34:59,317 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 04:34:59,317 INFO L435 NwaCegarLoop]: 903 mSDtfsCounter, 88 mSDsluCounter, 4437 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 5340 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 04:34:59,318 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 5340 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:34:59,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2479 states. [2024-11-28 04:34:59,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2479 to 2479. [2024-11-28 04:34:59,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2479 states, 1932 states have (on average 1.6231884057971016) internal successors, (3136), 1980 states have internal predecessors, (3136), 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 04:34:59,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2479 states to 2479 states and 4046 transitions. [2024-11-28 04:34:59,434 INFO L78 Accepts]: Start accepts. Automaton has 2479 states and 4046 transitions. Word has length 164 [2024-11-28 04:34:59,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:34:59,435 INFO L471 AbstractCegarLoop]: Abstraction has 2479 states and 4046 transitions. [2024-11-28 04:34:59,435 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 04:34:59,435 INFO L276 IsEmpty]: Start isEmpty. Operand 2479 states and 4046 transitions. [2024-11-28 04:34:59,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-11-28 04:34:59,440 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:34:59,440 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 04:34:59,440 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-28 04:34:59,440 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:34:59,441 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:34:59,441 INFO L85 PathProgramCache]: Analyzing trace with hash -2127229875, now seen corresponding path program 1 times [2024-11-28 04:34:59,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:34:59,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269442341] [2024-11-28 04:34:59,441 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:34:59,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:34:59,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:34:59,793 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 04:34:59,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:34:59,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269442341] [2024-11-28 04:34:59,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269442341] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:34:59,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:34:59,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-28 04:34:59,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306290114] [2024-11-28 04:34:59,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:34:59,795 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 04:34:59,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:34:59,796 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 04:34:59,796 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:34:59,797 INFO L87 Difference]: Start difference. First operand 2479 states and 4046 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 04:35:00,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:35:00,137 INFO L93 Difference]: Finished difference Result 4924 states and 8056 transitions. [2024-11-28 04:35:00,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 04:35:00,138 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 04:35:00,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:35:00,155 INFO L225 Difference]: With dead ends: 4924 [2024-11-28 04:35:00,155 INFO L226 Difference]: Without dead ends: 2470 [2024-11-28 04:35:00,163 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 04:35:00,169 INFO L435 NwaCegarLoop]: 863 mSDtfsCounter, 45 mSDsluCounter, 6857 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 7720 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:35:00,169 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 7720 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:35:00,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2470 states. [2024-11-28 04:35:00,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2470 to 2470. [2024-11-28 04:35:00,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2470 states, 1923 states have (on average 1.6229849193967758) internal successors, (3121), 1971 states have internal predecessors, (3121), 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 04:35:00,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2470 states to 2470 states and 4031 transitions. [2024-11-28 04:35:00,285 INFO L78 Accepts]: Start accepts. Automaton has 2470 states and 4031 transitions. Word has length 165 [2024-11-28 04:35:00,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:35:00,286 INFO L471 AbstractCegarLoop]: Abstraction has 2470 states and 4031 transitions. [2024-11-28 04:35:00,286 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 04:35:00,286 INFO L276 IsEmpty]: Start isEmpty. Operand 2470 states and 4031 transitions. [2024-11-28 04:35:00,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-11-28 04:35:00,290 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:35:00,290 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 04:35:00,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-28 04:35:00,291 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:35:00,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:35:00,291 INFO L85 PathProgramCache]: Analyzing trace with hash 733621867, now seen corresponding path program 1 times [2024-11-28 04:35:00,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:35:00,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683920424] [2024-11-28 04:35:00,292 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:35:00,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:35:00,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:35:00,692 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 04:35:00,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:35:00,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683920424] [2024-11-28 04:35:00,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683920424] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:35:00,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:35:00,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-28 04:35:00,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016870278] [2024-11-28 04:35:00,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:35:00,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 04:35:00,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:35:00,695 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 04:35:00,695 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:35:00,696 INFO L87 Difference]: Start difference. First operand 2470 states and 4031 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 04:35:00,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:35:00,941 INFO L93 Difference]: Finished difference Result 4856 states and 7962 transitions. [2024-11-28 04:35:00,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 04:35:00,942 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 04:35:00,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:35:00,958 INFO L225 Difference]: With dead ends: 4856 [2024-11-28 04:35:00,958 INFO L226 Difference]: Without dead ends: 2464 [2024-11-28 04:35:00,967 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-28 04:35:00,969 INFO L435 NwaCegarLoop]: 872 mSDtfsCounter, 31 mSDsluCounter, 6060 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 6932 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:35:00,969 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 6932 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:35:00,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2464 states. [2024-11-28 04:35:01,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2464 to 2464. [2024-11-28 04:35:01,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2464 states, 1917 states have (on average 1.624413145539906) internal successors, (3114), 1965 states have internal predecessors, (3114), 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 04:35:01,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2464 states to 2464 states and 4024 transitions. [2024-11-28 04:35:01,123 INFO L78 Accepts]: Start accepts. Automaton has 2464 states and 4024 transitions. Word has length 166 [2024-11-28 04:35:01,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:35:01,124 INFO L471 AbstractCegarLoop]: Abstraction has 2464 states and 4024 transitions. [2024-11-28 04:35:01,124 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 04:35:01,124 INFO L276 IsEmpty]: Start isEmpty. Operand 2464 states and 4024 transitions. [2024-11-28 04:35:01,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-11-28 04:35:01,128 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:35:01,128 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 04:35:01,128 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-28 04:35:01,128 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:35:01,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:35:01,129 INFO L85 PathProgramCache]: Analyzing trace with hash 287949225, now seen corresponding path program 1 times [2024-11-28 04:35:01,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:35:01,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115037982] [2024-11-28 04:35:01,129 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:35:01,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:35:01,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:35:01,415 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 04:35:01,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:35:01,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115037982] [2024-11-28 04:35:01,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115037982] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:35:01,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:35:01,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:35:01,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389934373] [2024-11-28 04:35:01,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:35:01,417 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:35:01,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:35:01,418 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:35:01,418 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:35:01,418 INFO L87 Difference]: Start difference. First operand 2464 states and 4024 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 04:35:04,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:35:04,804 INFO L93 Difference]: Finished difference Result 6926 states and 11521 transitions. [2024-11-28 04:35:04,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:35:04,804 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 04:35:04,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:35:04,838 INFO L225 Difference]: With dead ends: 6926 [2024-11-28 04:35:04,838 INFO L226 Difference]: Without dead ends: 4551 [2024-11-28 04:35:04,852 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 04:35:04,852 INFO L435 NwaCegarLoop]: 705 mSDtfsCounter, 3258 mSDsluCounter, 1068 mSDsCounter, 0 mSdLazyCounter, 3416 mSolverCounterSat, 889 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3294 SdHoareTripleChecker+Valid, 1773 SdHoareTripleChecker+Invalid, 4305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 889 IncrementalHoareTripleChecker+Valid, 3416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:35:04,853 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3294 Valid, 1773 Invalid, 4305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [889 Valid, 3416 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-28 04:35:04,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4551 states. [2024-11-28 04:35:05,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4551 to 4168. [2024-11-28 04:35:05,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4168 states, 3219 states have (on average 1.6126126126126126) internal successors, (5191), 3306 states have internal predecessors, (5191), 754 states have call successors, (754), 162 states have call predecessors, (754), 194 states have return successors, (859), 726 states have call predecessors, (859), 749 states have call successors, (859) [2024-11-28 04:35:05,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4168 states to 4168 states and 6804 transitions. [2024-11-28 04:35:05,166 INFO L78 Accepts]: Start accepts. Automaton has 4168 states and 6804 transitions. Word has length 166 [2024-11-28 04:35:05,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:35:05,166 INFO L471 AbstractCegarLoop]: Abstraction has 4168 states and 6804 transitions. [2024-11-28 04:35:05,167 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 04:35:05,167 INFO L276 IsEmpty]: Start isEmpty. Operand 4168 states and 6804 transitions. [2024-11-28 04:35:05,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-11-28 04:35:05,171 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:35:05,171 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 04:35:05,172 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-28 04:35:05,172 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:35:05,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:35:05,172 INFO L85 PathProgramCache]: Analyzing trace with hash -496879624, now seen corresponding path program 1 times [2024-11-28 04:35:05,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:35:05,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37156171] [2024-11-28 04:35:05,173 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:35:05,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:35:05,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:35:05,467 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 04:35:05,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:35:05,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37156171] [2024-11-28 04:35:05,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37156171] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:35:05,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:35:05,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:35:05,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044021038] [2024-11-28 04:35:05,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:35:05,468 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:35:05,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:35:05,469 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:35:05,469 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:35:05,469 INFO L87 Difference]: Start difference. First operand 4168 states and 6804 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 04:35:08,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:35:08,810 INFO L93 Difference]: Finished difference Result 12926 states and 21539 transitions. [2024-11-28 04:35:08,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:35:08,811 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 04:35:08,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:35:08,861 INFO L225 Difference]: With dead ends: 12926 [2024-11-28 04:35:08,862 INFO L226 Difference]: Without dead ends: 8850 [2024-11-28 04:35:08,885 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 04:35:08,886 INFO L435 NwaCegarLoop]: 704 mSDtfsCounter, 3271 mSDsluCounter, 1082 mSDsCounter, 0 mSdLazyCounter, 3379 mSolverCounterSat, 912 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3308 SdHoareTripleChecker+Valid, 1786 SdHoareTripleChecker+Invalid, 4291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 912 IncrementalHoareTripleChecker+Valid, 3379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-28 04:35:08,886 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3308 Valid, 1786 Invalid, 4291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [912 Valid, 3379 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-28 04:35:08,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8850 states. [2024-11-28 04:35:09,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8850 to 8086. [2024-11-28 04:35:09,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8086 states, 6186 states have (on average 1.603297769156159) internal successors, (9918), 6366 states have internal predecessors, (9918), 1521 states have call successors, (1521), 288 states have call predecessors, (1521), 378 states have return successors, (1820), 1499 states have call predecessors, (1820), 1516 states have call successors, (1820) [2024-11-28 04:35:09,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8086 states to 8086 states and 13259 transitions. [2024-11-28 04:35:09,595 INFO L78 Accepts]: Start accepts. Automaton has 8086 states and 13259 transitions. Word has length 167 [2024-11-28 04:35:09,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:35:09,596 INFO L471 AbstractCegarLoop]: Abstraction has 8086 states and 13259 transitions. [2024-11-28 04:35:09,597 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 04:35:09,597 INFO L276 IsEmpty]: Start isEmpty. Operand 8086 states and 13259 transitions. [2024-11-28 04:35:09,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-28 04:35:09,603 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:35:09,604 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 04:35:09,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-11-28 04:35:09,604 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:35:09,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:35:09,605 INFO L85 PathProgramCache]: Analyzing trace with hash -100261682, now seen corresponding path program 1 times [2024-11-28 04:35:09,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:35:09,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679570201] [2024-11-28 04:35:09,605 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:35:09,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:35:09,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:35:09,897 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 04:35:09,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:35:09,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679570201] [2024-11-28 04:35:09,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679570201] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:35:09,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:35:09,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:35:09,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511425134] [2024-11-28 04:35:09,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:35:09,899 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:35:09,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:35:09,899 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:35:09,899 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:35:09,900 INFO L87 Difference]: Start difference. First operand 8086 states and 13259 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 04:35:14,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:35:14,382 INFO L93 Difference]: Finished difference Result 27383 states and 45981 transitions. [2024-11-28 04:35:14,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:35:14,382 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 04:35:14,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:35:14,499 INFO L225 Difference]: With dead ends: 27383 [2024-11-28 04:35:14,499 INFO L226 Difference]: Without dead ends: 19395 [2024-11-28 04:35:14,536 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 04:35:14,536 INFO L435 NwaCegarLoop]: 710 mSDtfsCounter, 3283 mSDsluCounter, 1097 mSDsCounter, 0 mSdLazyCounter, 3386 mSolverCounterSat, 915 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3321 SdHoareTripleChecker+Valid, 1807 SdHoareTripleChecker+Invalid, 4301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 915 IncrementalHoareTripleChecker+Valid, 3386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:35:14,536 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3321 Valid, 1807 Invalid, 4301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [915 Valid, 3386 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-28 04:35:14,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19395 states. [2024-11-28 04:35:15,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19395 to 17442. [2024-11-28 04:35:15,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17442 states, 13208 states have (on average 1.596305269533616) internal successors, (21084), 13616 states have internal predecessors, (21084), 3426 states have call successors, (3426), 540 states have call predecessors, (3426), 807 states have return successors, (4334), 3460 states have call predecessors, (4334), 3421 states have call successors, (4334) [2024-11-28 04:35:15,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17442 states to 17442 states and 28844 transitions. [2024-11-28 04:35:15,901 INFO L78 Accepts]: Start accepts. Automaton has 17442 states and 28844 transitions. Word has length 168 [2024-11-28 04:35:15,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:35:15,902 INFO L471 AbstractCegarLoop]: Abstraction has 17442 states and 28844 transitions. [2024-11-28 04:35:15,902 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 04:35:15,902 INFO L276 IsEmpty]: Start isEmpty. Operand 17442 states and 28844 transitions. [2024-11-28 04:35:15,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-11-28 04:35:15,908 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:35:15,908 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 04:35:15,908 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-11-28 04:35:15,908 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:35:15,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:35:15,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1733498883, now seen corresponding path program 1 times [2024-11-28 04:35:15,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:35:15,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233769663] [2024-11-28 04:35:15,909 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:35:15,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:35:15,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:35:16,421 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 04:35:16,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:35:16,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233769663] [2024-11-28 04:35:16,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233769663] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:35:16,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:35:16,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:35:16,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624999277] [2024-11-28 04:35:16,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:35:16,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:35:16,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:35:16,426 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:35:16,426 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:35:16,427 INFO L87 Difference]: Start difference. First operand 17442 states and 28844 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 04:35:23,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:35:23,379 INFO L93 Difference]: Finished difference Result 63872 states and 108494 transitions. [2024-11-28 04:35:23,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:35:23,380 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 04:35:23,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:35:23,665 INFO L225 Difference]: With dead ends: 63872 [2024-11-28 04:35:23,665 INFO L226 Difference]: Without dead ends: 46540 [2024-11-28 04:35:23,769 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:35:23,770 INFO L435 NwaCegarLoop]: 716 mSDtfsCounter, 3295 mSDsluCounter, 1112 mSDsCounter, 0 mSdLazyCounter, 3393 mSolverCounterSat, 918 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3334 SdHoareTripleChecker+Valid, 1828 SdHoareTripleChecker+Invalid, 4311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 918 IncrementalHoareTripleChecker+Valid, 3393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-28 04:35:23,770 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3334 Valid, 1828 Invalid, 4311 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [918 Valid, 3393 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-28 04:35:23,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46540 states. [2024-11-28 04:35:27,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46540 to 40862. [2024-11-28 04:35:27,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40862 states, 30650 states have (on average 1.591451876019576) internal successors, (48778), 31634 states have internal predecessors, (48778), 8355 states have call successors, (8355), 1044 states have call predecessors, (8355), 1856 states have return successors, (11198), 8641 states have call predecessors, (11198), 8350 states have call successors, (11198) [2024-11-28 04:35:27,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40862 states to 40862 states and 68331 transitions. [2024-11-28 04:35:27,563 INFO L78 Accepts]: Start accepts. Automaton has 40862 states and 68331 transitions. Word has length 169 [2024-11-28 04:35:27,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:35:27,564 INFO L471 AbstractCegarLoop]: Abstraction has 40862 states and 68331 transitions. [2024-11-28 04:35:27,564 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 04:35:27,564 INFO L276 IsEmpty]: Start isEmpty. Operand 40862 states and 68331 transitions. [2024-11-28 04:35:27,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-11-28 04:35:27,573 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:35:27,573 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 04:35:27,573 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-11-28 04:35:27,573 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:35:27,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:35:27,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1867736077, now seen corresponding path program 1 times [2024-11-28 04:35:27,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:35:27,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240153776] [2024-11-28 04:35:27,574 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:35:27,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:35:27,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:35:27,836 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 04:35:27,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:35:27,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240153776] [2024-11-28 04:35:27,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240153776] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:35:27,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:35:27,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:35:27,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891301002] [2024-11-28 04:35:27,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:35:27,838 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:35:27,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:35:27,839 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:35:27,839 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:35:27,840 INFO L87 Difference]: Start difference. First operand 40862 states and 68331 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 04:35:39,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:35:39,848 INFO L93 Difference]: Finished difference Result 160709 states and 276545 transitions. [2024-11-28 04:35:39,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:35:39,849 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 04:35:39,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:35:40,771 INFO L225 Difference]: With dead ends: 160709 [2024-11-28 04:35:40,771 INFO L226 Difference]: Without dead ends: 119981 [2024-11-28 04:35:40,982 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 04:35:40,983 INFO L435 NwaCegarLoop]: 722 mSDtfsCounter, 3307 mSDsluCounter, 1127 mSDsCounter, 0 mSdLazyCounter, 3402 mSolverCounterSat, 920 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3347 SdHoareTripleChecker+Valid, 1849 SdHoareTripleChecker+Invalid, 4322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 920 IncrementalHoareTripleChecker+Valid, 3402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:35:40,983 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3347 Valid, 1849 Invalid, 4322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [920 Valid, 3402 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-28 04:35:41,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119981 states.