./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec1_product01.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_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/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_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec1_product01.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/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_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/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 a24bdc0807d94f83606acfe112db107808ae7409e0ad1ecc1d01e9704d0b4ece --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:58:54,728 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:58:54,835 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 04:58:54,844 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:58:54,848 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:58:54,897 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:58:54,898 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:58:54,898 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:58:54,899 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:58:54,899 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:58:54,900 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:58:54,901 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:58:54,902 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:58:54,902 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:58:54,902 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:58:54,903 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:58:54,903 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:58:54,903 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:58:54,903 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:58:54,903 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:58:54,903 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:58:54,903 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:58:54,904 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:58:54,904 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:58:54,904 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:58:54,904 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:58:54,905 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:58:54,905 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:58:54,905 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:58:54,905 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:58:54,905 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:58:54,905 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:58:54,906 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:58:54,907 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:58:54,907 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:58:54,907 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:58:54,907 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:58:54,907 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:58:54,908 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:58:54,908 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:58:54,908 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 04:58:54,908 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 04:58:54,908 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:58:54,908 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:58:54,908 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:58:54,908 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:58:54,909 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:58:54,909 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:58:54,909 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_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/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 -> a24bdc0807d94f83606acfe112db107808ae7409e0ad1ecc1d01e9704d0b4ece [2024-11-28 04:58:55,316 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:58:55,330 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:58:55,336 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:58:55,338 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:58:55,338 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:58:55,340 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/product-lines/elevator_spec1_product01.cil.c [2024-11-28 04:58:58,763 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/data/6e890dea2/328e5e163d0c4b2cb3f594251b302660/FLAGb93c0a2b6 [2024-11-28 04:58:59,283 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:58:59,284 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/sv-benchmarks/c/product-lines/elevator_spec1_product01.cil.c [2024-11-28 04:58:59,313 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/data/6e890dea2/328e5e163d0c4b2cb3f594251b302660/FLAGb93c0a2b6 [2024-11-28 04:58:59,330 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/data/6e890dea2/328e5e163d0c4b2cb3f594251b302660 [2024-11-28 04:58:59,333 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:58:59,335 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:58:59,337 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:58:59,337 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:58:59,343 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:58:59,344 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:58:59" (1/1) ... [2024-11-28 04:58:59,345 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@269bdc9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:58:59, skipping insertion in model container [2024-11-28 04:58:59,345 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:58:59" (1/1) ... [2024-11-28 04:58:59,435 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:58:59,619 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_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/sv-benchmarks/c/product-lines/elevator_spec1_product01.cil.c[1545,1558] [2024-11-28 04:59:00,150 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:59:00,180 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:59:00,191 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [48] [2024-11-28 04:59:00,192 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [57] [2024-11-28 04:59:00,193 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [1490] [2024-11-28 04:59:00,193 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [1849] [2024-11-28 04:59:00,193 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [2515] [2024-11-28 04:59:00,195 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [2881] [2024-11-28 04:59:00,195 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [2894] [2024-11-28 04:59:00,195 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [2985] [2024-11-28 04:59:00,195 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [3104] [2024-11-28 04:59:00,195 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification1_spec.i","") [3139] [2024-11-28 04:59:00,203 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_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/sv-benchmarks/c/product-lines/elevator_spec1_product01.cil.c[1545,1558] [2024-11-28 04:59:00,381 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:59:00,420 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:59:00,421 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:59:00 WrapperNode [2024-11-28 04:59:00,421 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:59:00,422 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:59:00,422 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:59:00,422 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:59:00,432 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:59:00" (1/1) ... [2024-11-28 04:59:00,476 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:59:00" (1/1) ... [2024-11-28 04:59:00,550 INFO L138 Inliner]: procedures = 88, calls = 329, calls flagged for inlining = 23, calls inlined = 20, statements flattened = 741 [2024-11-28 04:59:00,550 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:59:00,551 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:59:00,551 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:59:00,551 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:59:00,568 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:59:00" (1/1) ... [2024-11-28 04:59:00,568 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:59:00" (1/1) ... [2024-11-28 04:59:00,581 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:59:00" (1/1) ... [2024-11-28 04:59:00,635 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. The 0 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. [2024-11-28 04:59:00,640 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:59:00" (1/1) ... [2024-11-28 04:59:00,641 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:59:00" (1/1) ... [2024-11-28 04:59:00,675 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:59:00" (1/1) ... [2024-11-28 04:59:00,680 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:59:00" (1/1) ... [2024-11-28 04:59:00,704 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:59:00" (1/1) ... [2024-11-28 04:59:00,709 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:59:00" (1/1) ... [2024-11-28 04:59:00,714 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:59:00" (1/1) ... [2024-11-28 04:59:00,722 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:59:00,723 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:59:00,723 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:59:00,723 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:59:00,725 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:59:00" (1/1) ... [2024-11-28 04:59:00,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:59:00,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:59:00,780 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:59:00,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:59:00,823 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2024-11-28 04:59:00,826 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2024-11-28 04:59:00,826 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:59:00,827 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2024-11-28 04:59:00,827 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2024-11-28 04:59:00,827 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-11-28 04:59:00,827 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-11-28 04:59:00,827 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-11-28 04:59:00,827 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-11-28 04:59:00,828 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-11-28 04:59:00,828 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-11-28 04:59:00,830 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-28 04:59:00,830 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-28 04:59:00,830 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-28 04:59:00,830 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-28 04:59:00,831 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2024-11-28 04:59:00,831 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2024-11-28 04:59:00,831 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-11-28 04:59:00,831 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-11-28 04:59:00,831 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-11-28 04:59:00,831 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-11-28 04:59:00,831 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-11-28 04:59:00,831 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-11-28 04:59:00,831 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-11-28 04:59:00,831 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-11-28 04:59:00,831 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-11-28 04:59:00,831 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-11-28 04:59:00,831 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-11-28 04:59:00,832 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-11-28 04:59:00,832 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-11-28 04:59:00,832 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-11-28 04:59:00,832 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-11-28 04:59:00,832 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-11-28 04:59:00,832 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-11-28 04:59:00,832 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-11-28 04:59:00,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:59:00,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 04:59:00,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 04:59:00,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-28 04:59:00,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-28 04:59:00,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-28 04:59:00,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-28 04:59:00,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-28 04:59:00,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-28 04:59:00,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-28 04:59:00,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-28 04:59:00,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-28 04:59:00,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-28 04:59:00,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-28 04:59:00,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-11-28 04:59:00,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-11-28 04:59:00,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-11-28 04:59:00,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-11-28 04:59:00,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2024-11-28 04:59:00,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2024-11-28 04:59:00,837 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-11-28 04:59:00,837 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-11-28 04:59:00,838 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-11-28 04:59:00,838 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-11-28 04:59:00,838 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-11-28 04:59:00,838 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-11-28 04:59:00,838 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:59:00,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:59:00,838 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-11-28 04:59:00,838 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-11-28 04:59:01,134 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:59:01,140 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:59:03,034 INFO L? ?]: Removed 409 outVars from TransFormulas that were not future-live. [2024-11-28 04:59:03,035 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:59:03,075 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:59:03,076 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 04:59:03,080 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:59:03 BoogieIcfgContainer [2024-11-28 04:59:03,080 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:59:03,087 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:59:03,087 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:59:03,093 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:59:03,094 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:58:59" (1/3) ... [2024-11-28 04:59:03,095 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1120cdbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:59:03, skipping insertion in model container [2024-11-28 04:59:03,095 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:59:00" (2/3) ... [2024-11-28 04:59:03,095 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1120cdbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:59:03, skipping insertion in model container [2024-11-28 04:59:03,095 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:59:03" (3/3) ... [2024-11-28 04:59:03,097 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product01.cil.c [2024-11-28 04:59:03,125 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:59:03,131 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec1_product01.cil.c that has 22 procedures, 523 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-28 04:59:03,228 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:59:03,247 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;@2504a274, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:59:03,247 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 04:59:03,256 INFO L276 IsEmpty]: Start isEmpty. Operand has 523 states, 411 states have (on average 1.7128953771289537) internal successors, (704), 432 states have internal predecessors, (704), 89 states have call successors, (89), 21 states have call predecessors, (89), 21 states have return successors, (89), 83 states have call predecessors, (89), 89 states have call successors, (89) [2024-11-28 04:59:03,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-28 04:59:03,286 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:59:03,287 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 04:59:03,288 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:59:03,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:59:03,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1129196241, now seen corresponding path program 1 times [2024-11-28 04:59:03,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:59:03,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229370571] [2024-11-28 04:59:03,306 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:59:03,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:59:03,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:59:04,334 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 04:59:04,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:59:04,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229370571] [2024-11-28 04:59:04,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229370571] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:59:04,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314481985] [2024-11-28 04:59:04,338 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:59:04,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:59:04,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:59:04,345 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:59:04,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 04:59:05,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:59:05,051 INFO L256 TraceCheckSpWp]: Trace formula consists of 1758 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-28 04:59:05,066 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:59:05,121 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 04:59:05,121 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:59:05,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1314481985] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:59:05,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:59:05,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 4 [2024-11-28 04:59:05,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042325637] [2024-11-28 04:59:05,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:59:05,133 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 04:59:05,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:59:05,166 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 04:59:05,167 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:59:05,172 INFO L87 Difference]: Start difference. First operand has 523 states, 411 states have (on average 1.7128953771289537) internal successors, (704), 432 states have internal predecessors, (704), 89 states have call successors, (89), 21 states have call predecessors, (89), 21 states have return successors, (89), 83 states have call predecessors, (89), 89 states have call successors, (89) Second operand has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2024-11-28 04:59:05,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:59:05,317 INFO L93 Difference]: Finished difference Result 544 states and 912 transitions. [2024-11-28 04:59:05,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 04:59:05,320 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 97 [2024-11-28 04:59:05,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:59:05,355 INFO L225 Difference]: With dead ends: 544 [2024-11-28 04:59:05,356 INFO L226 Difference]: Without dead ends: 515 [2024-11-28 04:59:05,361 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 98 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 04:59:05,364 INFO L435 NwaCegarLoop]: 873 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, 873 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 04:59:05,365 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 873 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:59:05,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2024-11-28 04:59:05,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 515. [2024-11-28 04:59:05,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 405 states have (on average 1.711111111111111) internal successors, (693), 424 states have internal predecessors, (693), 89 states have call successors, (89), 21 states have call predecessors, (89), 20 states have return successors, (84), 82 states have call predecessors, (84), 84 states have call successors, (84) [2024-11-28 04:59:05,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 866 transitions. [2024-11-28 04:59:05,542 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 866 transitions. Word has length 97 [2024-11-28 04:59:05,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:59:05,545 INFO L471 AbstractCegarLoop]: Abstraction has 515 states and 866 transitions. [2024-11-28 04:59:05,545 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2024-11-28 04:59:05,545 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 866 transitions. [2024-11-28 04:59:05,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-28 04:59:05,554 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:59:05,554 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, 1] [2024-11-28 04:59:05,570 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 04:59:05,755 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-28 04:59:05,756 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:59:05,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:59:05,756 INFO L85 PathProgramCache]: Analyzing trace with hash 183414090, now seen corresponding path program 1 times [2024-11-28 04:59:05,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:59:05,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991754895] [2024-11-28 04:59:05,757 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:59:05,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:59:05,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:59:06,270 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 04:59:06,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:59:06,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991754895] [2024-11-28 04:59:06,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991754895] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:59:06,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [845700940] [2024-11-28 04:59:06,272 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:59:06,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:59:06,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:59:06,277 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:59:06,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 04:59:06,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:59:06,924 INFO L256 TraceCheckSpWp]: Trace formula consists of 1760 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:59:06,938 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:59:07,024 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 04:59:07,028 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:59:07,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [845700940] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:59:07,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:59:07,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-28 04:59:07,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137772945] [2024-11-28 04:59:07,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:59:07,030 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:59:07,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:59:07,031 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:59:07,031 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:59:07,031 INFO L87 Difference]: Start difference. First operand 515 states and 866 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-28 04:59:07,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:59:07,232 INFO L93 Difference]: Finished difference Result 1021 states and 1724 transitions. [2024-11-28 04:59:07,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:59:07,233 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) Word has length 98 [2024-11-28 04:59:07,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:59:07,245 INFO L225 Difference]: With dead ends: 1021 [2024-11-28 04:59:07,245 INFO L226 Difference]: Without dead ends: 515 [2024-11-28 04:59:07,254 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 97 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 04:59:07,255 INFO L435 NwaCegarLoop]: 854 mSDtfsCounter, 5 mSDsluCounter, 1702 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2556 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:59:07,257 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2556 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:59:07,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2024-11-28 04:59:07,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 515. [2024-11-28 04:59:07,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 405 states have (on average 1.708641975308642) internal successors, (692), 424 states have internal predecessors, (692), 89 states have call successors, (89), 21 states have call predecessors, (89), 20 states have return successors, (84), 82 states have call predecessors, (84), 84 states have call successors, (84) [2024-11-28 04:59:07,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 865 transitions. [2024-11-28 04:59:07,325 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 865 transitions. Word has length 98 [2024-11-28 04:59:07,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:59:07,326 INFO L471 AbstractCegarLoop]: Abstraction has 515 states and 865 transitions. [2024-11-28 04:59:07,327 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-28 04:59:07,327 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 865 transitions. [2024-11-28 04:59:07,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-28 04:59:07,335 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:59:07,335 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] [2024-11-28 04:59:07,350 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 04:59:07,536 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:59:07,536 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:59:07,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:59:07,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1671316342, now seen corresponding path program 1 times [2024-11-28 04:59:07,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:59:07,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499623182] [2024-11-28 04:59:07,537 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:59:07,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:59:07,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:59:07,858 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 04:59:07,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:59:07,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499623182] [2024-11-28 04:59:07,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499623182] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:59:07,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216704738] [2024-11-28 04:59:07,859 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:59:07,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:59:07,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:59:07,865 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:59:07,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 04:59:08,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:59:08,430 INFO L256 TraceCheckSpWp]: Trace formula consists of 1762 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:59:08,436 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:59:08,472 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 04:59:08,472 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:59:08,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [216704738] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:59:08,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:59:08,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-28 04:59:08,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601372484] [2024-11-28 04:59:08,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:59:08,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:59:08,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:59:08,474 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:59:08,474 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:59:08,474 INFO L87 Difference]: Start difference. First operand 515 states and 865 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-28 04:59:08,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:59:08,580 INFO L93 Difference]: Finished difference Result 1021 states and 1722 transitions. [2024-11-28 04:59:08,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:59:08,582 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) Word has length 100 [2024-11-28 04:59:08,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:59:08,588 INFO L225 Difference]: With dead ends: 1021 [2024-11-28 04:59:08,588 INFO L226 Difference]: Without dead ends: 515 [2024-11-28 04:59:08,592 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 99 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 04:59:08,593 INFO L435 NwaCegarLoop]: 854 mSDtfsCounter, 4 mSDsluCounter, 1702 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2556 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 04:59:08,593 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2556 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:59:08,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2024-11-28 04:59:08,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 515. [2024-11-28 04:59:08,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 405 states have (on average 1.7061728395061728) internal successors, (691), 424 states have internal predecessors, (691), 89 states have call successors, (89), 21 states have call predecessors, (89), 20 states have return successors, (84), 82 states have call predecessors, (84), 84 states have call successors, (84) [2024-11-28 04:59:08,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 864 transitions. [2024-11-28 04:59:08,624 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 864 transitions. Word has length 100 [2024-11-28 04:59:08,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:59:08,624 INFO L471 AbstractCegarLoop]: Abstraction has 515 states and 864 transitions. [2024-11-28 04:59:08,625 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-28 04:59:08,625 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 864 transitions. [2024-11-28 04:59:08,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-28 04:59:08,628 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:59:08,629 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] [2024-11-28 04:59:08,646 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 04:59:08,832 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:59:08,833 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:59:08,833 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:59:08,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1115959030, now seen corresponding path program 1 times [2024-11-28 04:59:08,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:59:08,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208963530] [2024-11-28 04:59:08,834 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:59:08,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:59:08,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:59:09,125 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 04:59:09,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:59:09,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208963530] [2024-11-28 04:59:09,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208963530] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:59:09,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2097462597] [2024-11-28 04:59:09,126 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:59:09,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:59:09,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:59:09,133 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:59:09,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 04:59:09,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:59:09,702 INFO L256 TraceCheckSpWp]: Trace formula consists of 1764 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:59:09,710 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:59:09,763 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 04:59:09,763 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:59:09,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2097462597] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:59:09,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:59:09,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-28 04:59:09,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109442910] [2024-11-28 04:59:09,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:59:09,764 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:59:09,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:59:09,766 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:59:09,767 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:59:09,767 INFO L87 Difference]: Start difference. First operand 515 states and 864 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, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-28 04:59:09,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:59:09,909 INFO L93 Difference]: Finished difference Result 1028 states and 1729 transitions. [2024-11-28 04:59:09,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:59:09,910 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, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) Word has length 102 [2024-11-28 04:59:09,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:59:09,920 INFO L225 Difference]: With dead ends: 1028 [2024-11-28 04:59:09,920 INFO L226 Difference]: Without dead ends: 524 [2024-11-28 04:59:09,923 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 101 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 04:59:09,927 INFO L435 NwaCegarLoop]: 853 mSDtfsCounter, 13 mSDsluCounter, 1700 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2553 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:59:09,927 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2553 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:59:09,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2024-11-28 04:59:10,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 524. [2024-11-28 04:59:10,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 413 states have (on average 1.702179176755448) internal successors, (703), 432 states have internal predecessors, (703), 89 states have call successors, (89), 22 states have call predecessors, (89), 21 states have return successors, (84), 82 states have call predecessors, (84), 84 states have call successors, (84) [2024-11-28 04:59:10,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 876 transitions. [2024-11-28 04:59:10,024 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 876 transitions. Word has length 102 [2024-11-28 04:59:10,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:59:10,025 INFO L471 AbstractCegarLoop]: Abstraction has 524 states and 876 transitions. [2024-11-28 04:59:10,025 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, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-28 04:59:10,025 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 876 transitions. [2024-11-28 04:59:10,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-28 04:59:10,029 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:59:10,029 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] [2024-11-28 04:59:10,045 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 04:59:10,231 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:59:10,231 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:59:10,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:59:10,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1681650341, now seen corresponding path program 1 times [2024-11-28 04:59:10,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:59:10,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965815280] [2024-11-28 04:59:10,233 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:59:10,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:59:10,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:59:10,487 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 04:59:10,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:59:10,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965815280] [2024-11-28 04:59:10,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965815280] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:59:10,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2072184413] [2024-11-28 04:59:10,488 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:59:10,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:59:10,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:59:10,490 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:59:10,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 04:59:10,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:59:10,999 INFO L256 TraceCheckSpWp]: Trace formula consists of 1765 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:59:11,004 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:59:11,053 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 04:59:11,053 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:59:11,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2072184413] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:59:11,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:59:11,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-28 04:59:11,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151680689] [2024-11-28 04:59:11,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:59:11,054 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:59:11,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:59:11,055 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:59:11,056 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:59:11,056 INFO L87 Difference]: Start difference. First operand 524 states and 876 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-28 04:59:11,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:59:11,193 INFO L93 Difference]: Finished difference Result 1030 states and 1730 transitions. [2024-11-28 04:59:11,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:59:11,194 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) Word has length 103 [2024-11-28 04:59:11,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:59:11,201 INFO L225 Difference]: With dead ends: 1030 [2024-11-28 04:59:11,202 INFO L226 Difference]: Without dead ends: 524 [2024-11-28 04:59:11,205 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 102 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 04:59:11,206 INFO L435 NwaCegarLoop]: 853 mSDtfsCounter, 11 mSDsluCounter, 1700 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2553 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:59:11,207 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2553 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:59:11,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2024-11-28 04:59:11,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 524. [2024-11-28 04:59:11,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 413 states have (on average 1.6997578692493946) internal successors, (702), 432 states have internal predecessors, (702), 89 states have call successors, (89), 22 states have call predecessors, (89), 21 states have return successors, (84), 82 states have call predecessors, (84), 84 states have call successors, (84) [2024-11-28 04:59:11,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 875 transitions. [2024-11-28 04:59:11,262 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 875 transitions. Word has length 103 [2024-11-28 04:59:11,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:59:11,262 INFO L471 AbstractCegarLoop]: Abstraction has 524 states and 875 transitions. [2024-11-28 04:59:11,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-28 04:59:11,263 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 875 transitions. [2024-11-28 04:59:11,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-28 04:59:11,268 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:59:11,268 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] [2024-11-28 04:59:11,283 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-28 04:59:11,472 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:59:11,473 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:59:11,473 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:59:11,473 INFO L85 PathProgramCache]: Analyzing trace with hash 518807526, now seen corresponding path program 1 times [2024-11-28 04:59:11,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:59:11,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220867586] [2024-11-28 04:59:11,474 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:59:11,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:59:11,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:59:11,670 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 04:59:11,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:59:11,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220867586] [2024-11-28 04:59:11,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220867586] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:59:11,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [528621857] [2024-11-28 04:59:11,674 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:59:11,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:59:11,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:59:11,678 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:59:11,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 04:59:12,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:59:12,222 INFO L256 TraceCheckSpWp]: Trace formula consists of 1766 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:59:12,228 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:59:12,283 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 04:59:12,284 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:59:12,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [528621857] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:59:12,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:59:12,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-28 04:59:12,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194925288] [2024-11-28 04:59:12,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:59:12,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:59:12,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:59:12,286 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:59:12,286 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:59:12,286 INFO L87 Difference]: Start difference. First operand 524 states and 875 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, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-28 04:59:12,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:59:12,398 INFO L93 Difference]: Finished difference Result 1030 states and 1729 transitions. [2024-11-28 04:59:12,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:59:12,399 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, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) Word has length 104 [2024-11-28 04:59:12,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:59:12,405 INFO L225 Difference]: With dead ends: 1030 [2024-11-28 04:59:12,406 INFO L226 Difference]: Without dead ends: 524 [2024-11-28 04:59:12,409 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 103 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 04:59:12,410 INFO L435 NwaCegarLoop]: 853 mSDtfsCounter, 10 mSDsluCounter, 1700 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2553 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:59:12,410 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2553 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:59:12,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2024-11-28 04:59:12,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 524. [2024-11-28 04:59:12,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 413 states have (on average 1.6973365617433414) internal successors, (701), 432 states have internal predecessors, (701), 89 states have call successors, (89), 22 states have call predecessors, (89), 21 states have return successors, (84), 82 states have call predecessors, (84), 84 states have call successors, (84) [2024-11-28 04:59:12,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 874 transitions. [2024-11-28 04:59:12,442 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 874 transitions. Word has length 104 [2024-11-28 04:59:12,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:59:12,442 INFO L471 AbstractCegarLoop]: Abstraction has 524 states and 874 transitions. [2024-11-28 04:59:12,443 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, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-28 04:59:12,443 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 874 transitions. [2024-11-28 04:59:12,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-28 04:59:12,447 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:59:12,447 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] [2024-11-28 04:59:12,463 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 04:59:12,651 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-28 04:59:12,652 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:59:12,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:59:12,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1135998529, now seen corresponding path program 1 times [2024-11-28 04:59:12,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:59:12,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133246507] [2024-11-28 04:59:12,653 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:59:12,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:59:12,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:59:12,966 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 04:59:12,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:59:12,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133246507] [2024-11-28 04:59:12,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133246507] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:59:12,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [988369701] [2024-11-28 04:59:12,967 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:59:12,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:59:12,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:59:12,970 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:59:12,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 04:59:13,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:59:13,497 INFO L256 TraceCheckSpWp]: Trace formula consists of 1767 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:59:13,502 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:59:13,563 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 04:59:13,567 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:59:13,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [988369701] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:59:13,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:59:13,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2024-11-28 04:59:13,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065840883] [2024-11-28 04:59:13,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:59:13,570 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:59:13,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:59:13,571 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:59:13,571 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:59:13,572 INFO L87 Difference]: Start difference. First operand 524 states and 874 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-28 04:59:13,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:59:13,829 INFO L93 Difference]: Finished difference Result 1056 states and 1776 transitions. [2024-11-28 04:59:13,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:59:13,831 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 105 [2024-11-28 04:59:13,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:59:13,839 INFO L225 Difference]: With dead ends: 1056 [2024-11-28 04:59:13,840 INFO L226 Difference]: Without dead ends: 539 [2024-11-28 04:59:13,843 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:59:13,845 INFO L435 NwaCegarLoop]: 828 mSDtfsCounter, 76 mSDsluCounter, 1616 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 2444 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:59:13,846 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 2444 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:59:13,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2024-11-28 04:59:13,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 524. [2024-11-28 04:59:13,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 413 states have (on average 1.685230024213075) internal successors, (696), 432 states have internal predecessors, (696), 89 states have call successors, (89), 22 states have call predecessors, (89), 21 states have return successors, (84), 82 states have call predecessors, (84), 84 states have call successors, (84) [2024-11-28 04:59:13,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 869 transitions. [2024-11-28 04:59:13,882 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 869 transitions. Word has length 105 [2024-11-28 04:59:13,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:59:13,883 INFO L471 AbstractCegarLoop]: Abstraction has 524 states and 869 transitions. [2024-11-28 04:59:13,883 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-28 04:59:13,883 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 869 transitions. [2024-11-28 04:59:13,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-28 04:59:13,887 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:59:13,887 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] [2024-11-28 04:59:13,903 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 04:59:14,088 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:59:14,089 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:59:14,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:59:14,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1973539777, now seen corresponding path program 1 times [2024-11-28 04:59:14,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:59:14,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950333106] [2024-11-28 04:59:14,090 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:59:14,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:59:14,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:59:14,451 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 04:59:14,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:59:14,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950333106] [2024-11-28 04:59:14,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950333106] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:59:14,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [294158219] [2024-11-28 04:59:14,452 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:59:14,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:59:14,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:59:14,455 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:59:14,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 04:59:15,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:59:15,037 INFO L256 TraceCheckSpWp]: Trace formula consists of 1769 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:59:15,045 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:59:15,123 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 04:59:15,123 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:59:15,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [294158219] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:59:15,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:59:15,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2024-11-28 04:59:15,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690067224] [2024-11-28 04:59:15,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:59:15,125 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:59:15,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:59:15,126 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:59:15,127 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:59:15,127 INFO L87 Difference]: Start difference. First operand 524 states and 869 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-28 04:59:15,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:59:15,341 INFO L93 Difference]: Finished difference Result 1056 states and 1766 transitions. [2024-11-28 04:59:15,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:59:15,342 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 107 [2024-11-28 04:59:15,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:59:15,349 INFO L225 Difference]: With dead ends: 1056 [2024-11-28 04:59:15,349 INFO L226 Difference]: Without dead ends: 539 [2024-11-28 04:59:15,353 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:59:15,353 INFO L435 NwaCegarLoop]: 828 mSDtfsCounter, 75 mSDsluCounter, 1616 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 2444 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:59:15,354 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 2444 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:59:15,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2024-11-28 04:59:15,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 524. [2024-11-28 04:59:15,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 413 states have (on average 1.6731234866828086) internal successors, (691), 432 states have internal predecessors, (691), 89 states have call successors, (89), 22 states have call predecessors, (89), 21 states have return successors, (84), 82 states have call predecessors, (84), 84 states have call successors, (84) [2024-11-28 04:59:15,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 864 transitions. [2024-11-28 04:59:15,386 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 864 transitions. Word has length 107 [2024-11-28 04:59:15,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:59:15,387 INFO L471 AbstractCegarLoop]: Abstraction has 524 states and 864 transitions. [2024-11-28 04:59:15,387 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-28 04:59:15,387 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 864 transitions. [2024-11-28 04:59:15,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-28 04:59:15,391 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:59:15,391 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] [2024-11-28 04:59:15,408 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-28 04:59:15,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:59:15,592 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:59:15,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:59:15,593 INFO L85 PathProgramCache]: Analyzing trace with hash 392647201, now seen corresponding path program 1 times [2024-11-28 04:59:15,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:59:15,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498071457] [2024-11-28 04:59:15,593 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:59:15,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:59:15,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:59:15,860 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 04:59:15,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:59:15,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498071457] [2024-11-28 04:59:15,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498071457] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:59:15,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794550149] [2024-11-28 04:59:15,860 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:59:15,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:59:15,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:59:15,864 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:59:15,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 04:59:16,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:59:16,367 INFO L256 TraceCheckSpWp]: Trace formula consists of 1771 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:59:16,373 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:59:16,434 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 04:59:16,435 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:59:16,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [794550149] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:59:16,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:59:16,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2024-11-28 04:59:16,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74079929] [2024-11-28 04:59:16,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:59:16,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:59:16,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:59:16,437 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:59:16,438 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:59:16,438 INFO L87 Difference]: Start difference. First operand 524 states and 864 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-28 04:59:16,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:59:16,800 INFO L93 Difference]: Finished difference Result 1107 states and 1839 transitions. [2024-11-28 04:59:16,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:59:16,801 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 109 [2024-11-28 04:59:16,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:59:16,808 INFO L225 Difference]: With dead ends: 1107 [2024-11-28 04:59:16,808 INFO L226 Difference]: Without dead ends: 605 [2024-11-28 04:59:16,811 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:59:16,812 INFO L435 NwaCegarLoop]: 861 mSDtfsCounter, 130 mSDsluCounter, 1614 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 2475 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:59:16,813 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 2475 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:59:16,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2024-11-28 04:59:16,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 575. [2024-11-28 04:59:16,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 463 states have (on average 1.676025917926566) internal successors, (776), 482 states have internal predecessors, (776), 89 states have call successors, (89), 23 states have call predecessors, (89), 22 states have return successors, (84), 82 states have call predecessors, (84), 84 states have call successors, (84) [2024-11-28 04:59:16,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 949 transitions. [2024-11-28 04:59:16,848 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 949 transitions. Word has length 109 [2024-11-28 04:59:16,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:59:16,849 INFO L471 AbstractCegarLoop]: Abstraction has 575 states and 949 transitions. [2024-11-28 04:59:16,849 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-28 04:59:16,849 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 949 transitions. [2024-11-28 04:59:16,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-28 04:59:16,853 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:59:16,853 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] [2024-11-28 04:59:16,869 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-28 04:59:17,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:59:17,055 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:59:17,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:59:17,055 INFO L85 PathProgramCache]: Analyzing trace with hash 224135999, now seen corresponding path program 1 times [2024-11-28 04:59:17,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:59:17,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253190635] [2024-11-28 04:59:17,056 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:59:17,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:59:17,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:59:17,323 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 04:59:17,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:59:17,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253190635] [2024-11-28 04:59:17,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253190635] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:59:17,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893704115] [2024-11-28 04:59:17,324 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:59:17,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:59:17,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:59:17,327 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:59:17,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 04:59:17,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:59:17,808 INFO L256 TraceCheckSpWp]: Trace formula consists of 1772 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:59:17,815 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:59:17,872 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 04:59:17,873 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:59:17,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1893704115] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:59:17,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:59:17,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2024-11-28 04:59:17,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337667319] [2024-11-28 04:59:17,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:59:17,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:59:17,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:59:17,876 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:59:17,876 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:59:17,876 INFO L87 Difference]: Start difference. First operand 575 states and 949 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-28 04:59:18,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:59:18,185 INFO L93 Difference]: Finished difference Result 1122 states and 1863 transitions. [2024-11-28 04:59:18,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:59:18,185 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 110 [2024-11-28 04:59:18,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:59:18,193 INFO L225 Difference]: With dead ends: 1122 [2024-11-28 04:59:18,193 INFO L226 Difference]: Without dead ends: 605 [2024-11-28 04:59:18,197 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:59:18,201 INFO L435 NwaCegarLoop]: 860 mSDtfsCounter, 124 mSDsluCounter, 1588 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 2448 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 04:59:18,201 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 2448 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:59:18,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2024-11-28 04:59:18,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 575. [2024-11-28 04:59:18,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 463 states have (on average 1.6652267818574513) internal successors, (771), 482 states have internal predecessors, (771), 89 states have call successors, (89), 23 states have call predecessors, (89), 22 states have return successors, (84), 82 states have call predecessors, (84), 84 states have call successors, (84) [2024-11-28 04:59:18,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 944 transitions. [2024-11-28 04:59:18,238 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 944 transitions. Word has length 110 [2024-11-28 04:59:18,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:59:18,238 INFO L471 AbstractCegarLoop]: Abstraction has 575 states and 944 transitions. [2024-11-28 04:59:18,239 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-28 04:59:18,239 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 944 transitions. [2024-11-28 04:59:18,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-28 04:59:18,243 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:59:18,243 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:59:18,260 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-28 04:59:18,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-28 04:59:18,445 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:59:18,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:59:18,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1802453216, now seen corresponding path program 1 times [2024-11-28 04:59:18,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:59:18,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710690637] [2024-11-28 04:59:18,446 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:59:18,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:59:18,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:59:18,684 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 04:59:18,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:59:18,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710690637] [2024-11-28 04:59:18,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710690637] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:59:18,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385813519] [2024-11-28 04:59:18,685 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:59:18,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:59:18,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:59:18,688 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:59:18,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 04:59:19,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:59:19,158 INFO L256 TraceCheckSpWp]: Trace formula consists of 1768 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 04:59:19,163 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:59:19,292 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 04:59:19,293 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:59:19,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1385813519] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:59:19,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:59:19,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2024-11-28 04:59:19,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991615635] [2024-11-28 04:59:19,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:59:19,294 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 04:59:19,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:59:19,294 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 04:59:19,295 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-11-28 04:59:19,295 INFO L87 Difference]: Start difference. First operand 575 states and 944 transitions. Second operand has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-28 04:59:19,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:59:19,552 INFO L93 Difference]: Finished difference Result 1115 states and 1843 transitions. [2024-11-28 04:59:19,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 04:59:19,553 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 110 [2024-11-28 04:59:19,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:59:19,560 INFO L225 Difference]: With dead ends: 1115 [2024-11-28 04:59:19,560 INFO L226 Difference]: Without dead ends: 613 [2024-11-28 04:59:19,564 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 105 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 04:59:19,564 INFO L435 NwaCegarLoop]: 834 mSDtfsCounter, 113 mSDsluCounter, 4915 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 5749 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:59:19,565 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 5749 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:59:19,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2024-11-28 04:59:19,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 594. [2024-11-28 04:59:19,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 594 states, 479 states have (on average 1.663883089770355) internal successors, (797), 500 states have internal predecessors, (797), 90 states have call successors, (90), 23 states have call predecessors, (90), 24 states have return successors, (87), 83 states have call predecessors, (87), 85 states have call successors, (87) [2024-11-28 04:59:19,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 974 transitions. [2024-11-28 04:59:19,603 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 974 transitions. Word has length 110 [2024-11-28 04:59:19,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:59:19,604 INFO L471 AbstractCegarLoop]: Abstraction has 594 states and 974 transitions. [2024-11-28 04:59:19,605 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-28 04:59:19,605 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 974 transitions. [2024-11-28 04:59:19,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-28 04:59:19,611 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:59:19,611 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:59:19,626 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-28 04:59:19,811 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-28 04:59:19,812 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:59:19,812 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:59:19,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1360698721, now seen corresponding path program 1 times [2024-11-28 04:59:19,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:59:19,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706982227] [2024-11-28 04:59:19,813 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:59:19,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:59:19,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:59:19,952 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 04:59:19,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:59:19,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706982227] [2024-11-28 04:59:19,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706982227] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:59:19,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692738095] [2024-11-28 04:59:19,953 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:59:19,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:59:19,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:59:19,956 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:59:19,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 04:59:20,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:59:20,456 INFO L256 TraceCheckSpWp]: Trace formula consists of 1767 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 04:59:20,465 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:59:20,563 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 04:59:20,564 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:59:20,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [692738095] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:59:20,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:59:20,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2024-11-28 04:59:20,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317239438] [2024-11-28 04:59:20,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:59:20,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:59:20,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:59:20,566 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:59:20,566 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:59:20,566 INFO L87 Difference]: Start difference. First operand 594 states and 974 transitions. Second operand has 7 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-28 04:59:20,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:59:20,729 INFO L93 Difference]: Finished difference Result 1053 states and 1743 transitions. [2024-11-28 04:59:20,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:59:20,730 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 110 [2024-11-28 04:59:20,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:59:20,737 INFO L225 Difference]: With dead ends: 1053 [2024-11-28 04:59:20,737 INFO L226 Difference]: Without dead ends: 618 [2024-11-28 04:59:20,740 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:59:20,741 INFO L435 NwaCegarLoop]: 847 mSDtfsCounter, 86 mSDsluCounter, 4156 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 5003 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 04:59:20,741 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 5003 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:59:20,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2024-11-28 04:59:20,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 613. [2024-11-28 04:59:20,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 613 states, 495 states have (on average 1.6626262626262627) internal successors, (823), 518 states have internal predecessors, (823), 91 states have call successors, (91), 23 states have call predecessors, (91), 26 states have return successors, (90), 84 states have call predecessors, (90), 86 states have call successors, (90) [2024-11-28 04:59:20,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 1004 transitions. [2024-11-28 04:59:20,778 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 1004 transitions. Word has length 110 [2024-11-28 04:59:20,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:59:20,778 INFO L471 AbstractCegarLoop]: Abstraction has 613 states and 1004 transitions. [2024-11-28 04:59:20,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-28 04:59:20,779 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 1004 transitions. [2024-11-28 04:59:20,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-28 04:59:20,783 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:59:20,783 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:59:20,797 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-28 04:59:20,983 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-28 04:59:20,984 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:59:20,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:59:20,985 INFO L85 PathProgramCache]: Analyzing trace with hash 142189396, now seen corresponding path program 1 times [2024-11-28 04:59:20,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:59:20,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616498915] [2024-11-28 04:59:20,985 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:59:20,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:59:21,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:59:21,122 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 04:59:21,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:59:21,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616498915] [2024-11-28 04:59:21,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616498915] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:59:21,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012996176] [2024-11-28 04:59:21,123 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:59:21,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:59:21,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:59:21,125 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:59:21,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 04:59:21,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:59:21,760 INFO L256 TraceCheckSpWp]: Trace formula consists of 1768 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 04:59:21,765 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:59:21,866 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 04:59:21,866 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:59:21,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2012996176] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:59:21,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:59:21,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2024-11-28 04:59:21,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222051786] [2024-11-28 04:59:21,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:59:21,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:59:21,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:59:21,869 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:59:21,869 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:59:21,869 INFO L87 Difference]: Start difference. First operand 613 states and 1004 transitions. Second operand has 7 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-28 04:59:22,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:59:22,028 INFO L93 Difference]: Finished difference Result 1083 states and 1794 transitions. [2024-11-28 04:59:22,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:59:22,029 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 111 [2024-11-28 04:59:22,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:59:22,037 INFO L225 Difference]: With dead ends: 1083 [2024-11-28 04:59:22,037 INFO L226 Difference]: Without dead ends: 648 [2024-11-28 04:59:22,041 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:59:22,042 INFO L435 NwaCegarLoop]: 847 mSDtfsCounter, 95 mSDsluCounter, 4146 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 4993 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 04:59:22,042 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 4993 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:59:22,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2024-11-28 04:59:22,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 613. [2024-11-28 04:59:22,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 613 states, 495 states have (on average 1.6626262626262627) internal successors, (823), 518 states have internal predecessors, (823), 91 states have call successors, (91), 23 states have call predecessors, (91), 26 states have return successors, (90), 84 states have call predecessors, (90), 86 states have call successors, (90) [2024-11-28 04:59:22,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 1004 transitions. [2024-11-28 04:59:22,080 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 1004 transitions. Word has length 111 [2024-11-28 04:59:22,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:59:22,081 INFO L471 AbstractCegarLoop]: Abstraction has 613 states and 1004 transitions. [2024-11-28 04:59:22,081 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-28 04:59:22,081 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 1004 transitions. [2024-11-28 04:59:22,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-28 04:59:22,085 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:59:22,086 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:59:22,101 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-28 04:59:22,286 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-28 04:59:22,287 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:59:22,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:59:22,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1016641236, now seen corresponding path program 1 times [2024-11-28 04:59:22,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:59:22,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782469350] [2024-11-28 04:59:22,288 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:59:22,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:59:22,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:59:22,415 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 04:59:22,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:59:22,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782469350] [2024-11-28 04:59:22,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782469350] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:59:22,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964543593] [2024-11-28 04:59:22,416 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:59:22,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:59:22,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:59:22,422 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:59:22,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-28 04:59:22,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:59:22,917 INFO L256 TraceCheckSpWp]: Trace formula consists of 1764 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 04:59:22,922 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:59:23,027 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 04:59:23,028 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:59:23,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [964543593] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:59:23,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:59:23,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2024-11-28 04:59:23,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971083855] [2024-11-28 04:59:23,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:59:23,029 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 04:59:23,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:59:23,030 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 04:59:23,030 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:59:23,030 INFO L87 Difference]: Start difference. First operand 613 states and 1004 transitions. Second operand has 8 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-28 04:59:23,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:59:23,281 INFO L93 Difference]: Finished difference Result 1068 states and 1768 transitions. [2024-11-28 04:59:23,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 04:59:23,282 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 111 [2024-11-28 04:59:23,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:59:23,289 INFO L225 Difference]: With dead ends: 1068 [2024-11-28 04:59:23,290 INFO L226 Difference]: Without dead ends: 633 [2024-11-28 04:59:23,293 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 107 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 04:59:23,294 INFO L435 NwaCegarLoop]: 836 mSDtfsCounter, 113 mSDsluCounter, 4921 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 5757 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:59:23,294 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 5757 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:59:23,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2024-11-28 04:59:23,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 613. [2024-11-28 04:59:23,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 613 states, 495 states have (on average 1.6626262626262627) internal successors, (823), 518 states have internal predecessors, (823), 91 states have call successors, (91), 23 states have call predecessors, (91), 26 states have return successors, (90), 84 states have call predecessors, (90), 86 states have call successors, (90) [2024-11-28 04:59:23,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 1004 transitions. [2024-11-28 04:59:23,329 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 1004 transitions. Word has length 111 [2024-11-28 04:59:23,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:59:23,330 INFO L471 AbstractCegarLoop]: Abstraction has 613 states and 1004 transitions. [2024-11-28 04:59:23,330 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-28 04:59:23,330 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 1004 transitions. [2024-11-28 04:59:23,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-28 04:59:23,334 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:59:23,335 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:59:23,351 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-28 04:59:23,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-28 04:59:23,539 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:59:23,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:59:23,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1827696232, now seen corresponding path program 1 times [2024-11-28 04:59:23,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:59:23,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389534586] [2024-11-28 04:59:23,539 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:59:23,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:59:23,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:59:23,667 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 04:59:23,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:59:23,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389534586] [2024-11-28 04:59:23,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389534586] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:59:23,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1808945514] [2024-11-28 04:59:23,668 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:59:23,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:59:23,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:59:23,671 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:59:23,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-28 04:59:24,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:59:24,227 INFO L256 TraceCheckSpWp]: Trace formula consists of 1768 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:59:24,232 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:59:24,273 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 04:59:24,276 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:59:24,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1808945514] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:59:24,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:59:24,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-28 04:59:24,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607055601] [2024-11-28 04:59:24,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:59:24,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:59:24,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:59:24,278 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:59:24,278 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:59:24,278 INFO L87 Difference]: Start difference. First operand 613 states and 1004 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-28 04:59:24,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:59:24,370 INFO L93 Difference]: Finished difference Result 1120 states and 1853 transitions. [2024-11-28 04:59:24,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:59:24,371 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 111 [2024-11-28 04:59:24,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:59:24,380 INFO L225 Difference]: With dead ends: 1120 [2024-11-28 04:59:24,380 INFO L226 Difference]: Without dead ends: 613 [2024-11-28 04:59:24,383 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 110 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 04:59:24,386 INFO L435 NwaCegarLoop]: 842 mSDtfsCounter, 13 mSDsluCounter, 1680 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2522 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 04:59:24,386 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2522 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:59:24,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2024-11-28 04:59:24,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 613. [2024-11-28 04:59:24,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 613 states, 495 states have (on average 1.6545454545454545) internal successors, (819), 518 states have internal predecessors, (819), 91 states have call successors, (91), 23 states have call predecessors, (91), 26 states have return successors, (90), 84 states have call predecessors, (90), 86 states have call successors, (90) [2024-11-28 04:59:24,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 1000 transitions. [2024-11-28 04:59:24,425 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 1000 transitions. Word has length 111 [2024-11-28 04:59:24,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:59:24,425 INFO L471 AbstractCegarLoop]: Abstraction has 613 states and 1000 transitions. [2024-11-28 04:59:24,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-28 04:59:24,426 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 1000 transitions. [2024-11-28 04:59:24,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-28 04:59:24,430 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:59:24,430 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] [2024-11-28 04:59:24,446 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-28 04:59:24,631 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-28 04:59:24,631 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:59:24,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:59:24,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1798173609, now seen corresponding path program 1 times [2024-11-28 04:59:24,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:59:24,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509100538] [2024-11-28 04:59:24,633 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:59:24,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:59:24,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:59:24,766 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 04:59:24,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:59:24,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509100538] [2024-11-28 04:59:24,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509100538] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:59:24,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605263052] [2024-11-28 04:59:24,767 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:59:24,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:59:24,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:59:24,770 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:59:24,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-28 04:59:25,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:59:25,280 INFO L256 TraceCheckSpWp]: Trace formula consists of 1765 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 04:59:25,289 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:59:25,409 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 04:59:25,409 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:59:25,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [605263052] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:59:25,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:59:25,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2024-11-28 04:59:25,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538584496] [2024-11-28 04:59:25,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:59:25,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 04:59:25,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:59:25,411 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 04:59:25,411 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:59:25,412 INFO L87 Difference]: Start difference. First operand 613 states and 1000 transitions. Second operand has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-28 04:59:25,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:59:25,646 INFO L93 Difference]: Finished difference Result 1068 states and 1765 transitions. [2024-11-28 04:59:25,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 04:59:25,648 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 112 [2024-11-28 04:59:25,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:59:25,655 INFO L225 Difference]: With dead ends: 1068 [2024-11-28 04:59:25,655 INFO L226 Difference]: Without dead ends: 633 [2024-11-28 04:59:25,658 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 108 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 04:59:25,659 INFO L435 NwaCegarLoop]: 830 mSDtfsCounter, 121 mSDsluCounter, 4883 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 5713 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:59:25,660 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 5713 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:59:25,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2024-11-28 04:59:25,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 613. [2024-11-28 04:59:25,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 613 states, 495 states have (on average 1.6545454545454545) internal successors, (819), 518 states have internal predecessors, (819), 91 states have call successors, (91), 23 states have call predecessors, (91), 26 states have return successors, (90), 84 states have call predecessors, (90), 86 states have call successors, (90) [2024-11-28 04:59:25,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 1000 transitions. [2024-11-28 04:59:25,696 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 1000 transitions. Word has length 112 [2024-11-28 04:59:25,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:59:25,697 INFO L471 AbstractCegarLoop]: Abstraction has 613 states and 1000 transitions. [2024-11-28 04:59:25,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-28 04:59:25,697 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 1000 transitions. [2024-11-28 04:59:25,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-28 04:59:25,701 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:59:25,702 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] [2024-11-28 04:59:25,717 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-28 04:59:25,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-28 04:59:25,903 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:59:25,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:59:25,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1849046385, now seen corresponding path program 1 times [2024-11-28 04:59:25,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:59:25,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462261015] [2024-11-28 04:59:25,904 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:59:25,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:59:25,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:59:26,042 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 04:59:26,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:59:26,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462261015] [2024-11-28 04:59:26,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462261015] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:59:26,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417883636] [2024-11-28 04:59:26,043 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:59:26,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:59:26,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:59:26,046 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:59:26,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-28 04:59:26,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:59:26,553 INFO L256 TraceCheckSpWp]: Trace formula consists of 1766 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 04:59:26,559 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:59:26,643 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 04:59:26,643 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:59:26,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [417883636] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:59:26,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:59:26,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-28 04:59:26,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665015345] [2024-11-28 04:59:26,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:59:26,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:59:26,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:59:26,645 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:59:26,645 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:59:26,645 INFO L87 Difference]: Start difference. First operand 613 states and 1000 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-28 04:59:26,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:59:26,744 INFO L93 Difference]: Finished difference Result 1164 states and 1921 transitions. [2024-11-28 04:59:26,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:59:26,745 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 113 [2024-11-28 04:59:26,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:59:26,752 INFO L225 Difference]: With dead ends: 1164 [2024-11-28 04:59:26,752 INFO L226 Difference]: Without dead ends: 637 [2024-11-28 04:59:26,756 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 112 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 04:59:26,758 INFO L435 NwaCegarLoop]: 836 mSDtfsCounter, 6 mSDsluCounter, 1659 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 2495 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:59:26,758 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 2495 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:59:26,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2024-11-28 04:59:26,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 637. [2024-11-28 04:59:26,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 519 states have (on average 1.6319845857418112) internal successors, (847), 542 states have internal predecessors, (847), 91 states have call successors, (91), 23 states have call predecessors, (91), 26 states have return successors, (90), 84 states have call predecessors, (90), 86 states have call successors, (90) [2024-11-28 04:59:26,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 1028 transitions. [2024-11-28 04:59:26,797 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 1028 transitions. Word has length 113 [2024-11-28 04:59:26,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:59:26,797 INFO L471 AbstractCegarLoop]: Abstraction has 637 states and 1028 transitions. [2024-11-28 04:59:26,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-28 04:59:26,798 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 1028 transitions. [2024-11-28 04:59:26,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-28 04:59:26,802 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:59:26,802 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] [2024-11-28 04:59:26,817 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-28 04:59:27,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-28 04:59:27,003 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:59:27,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:59:27,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1405563389, now seen corresponding path program 1 times [2024-11-28 04:59:27,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:59:27,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528505568] [2024-11-28 04:59:27,004 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:59:27,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:59:27,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:59:27,139 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 04:59:27,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:59:27,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528505568] [2024-11-28 04:59:27,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528505568] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:59:27,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257011857] [2024-11-28 04:59:27,140 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:59:27,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:59:27,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:59:27,143 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:59:27,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-28 04:59:27,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:59:27,634 INFO L256 TraceCheckSpWp]: Trace formula consists of 1769 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 04:59:27,638 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:59:27,661 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 04:59:27,661 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:59:27,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [257011857] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:59:27,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:59:27,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-28 04:59:27,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65077563] [2024-11-28 04:59:27,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:59:27,662 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:59:27,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:59:27,663 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:59:27,663 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:59:27,664 INFO L87 Difference]: Start difference. First operand 637 states and 1028 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, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-28 04:59:27,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:59:27,704 INFO L93 Difference]: Finished difference Result 1069 states and 1760 transitions. [2024-11-28 04:59:27,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:59:27,705 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, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 113 [2024-11-28 04:59:27,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:59:27,712 INFO L225 Difference]: With dead ends: 1069 [2024-11-28 04:59:27,713 INFO L226 Difference]: Without dead ends: 639 [2024-11-28 04:59:27,716 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 112 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 04:59:27,716 INFO L435 NwaCegarLoop]: 850 mSDtfsCounter, 0 mSDsluCounter, 1694 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2544 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:59:27,717 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2544 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:59:27,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2024-11-28 04:59:27,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 639. [2024-11-28 04:59:27,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 639 states, 521 states have (on average 1.6295585412667946) internal successors, (849), 544 states have internal predecessors, (849), 91 states have call successors, (91), 23 states have call predecessors, (91), 26 states have return successors, (90), 84 states have call predecessors, (90), 86 states have call successors, (90) [2024-11-28 04:59:27,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 1030 transitions. [2024-11-28 04:59:27,750 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 1030 transitions. Word has length 113 [2024-11-28 04:59:27,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:59:27,750 INFO L471 AbstractCegarLoop]: Abstraction has 639 states and 1030 transitions. [2024-11-28 04:59:27,751 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, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-28 04:59:27,751 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 1030 transitions. [2024-11-28 04:59:27,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-28 04:59:27,755 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:59:27,755 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] [2024-11-28 04:59:27,770 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-28 04:59:27,956 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-28 04:59:27,956 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:59:27,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:59:27,957 INFO L85 PathProgramCache]: Analyzing trace with hash -398481554, now seen corresponding path program 1 times [2024-11-28 04:59:27,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:59:27,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509241477] [2024-11-28 04:59:27,957 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:59:27,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:59:27,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:59:28,082 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 04:59:28,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:59:28,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509241477] [2024-11-28 04:59:28,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509241477] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:59:28,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600399405] [2024-11-28 04:59:28,083 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:59:28,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:59:28,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:59:28,086 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:59:28,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-28 04:59:28,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:59:28,566 INFO L256 TraceCheckSpWp]: Trace formula consists of 1786 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 04:59:28,575 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:59:28,900 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-28 04:59:28,900 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:59:28,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1600399405] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:59:28,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:59:28,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [4] total 11 [2024-11-28 04:59:28,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389600708] [2024-11-28 04:59:28,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:59:28,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 04:59:28,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:59:28,903 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 04:59:28,903 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-28 04:59:28,904 INFO L87 Difference]: Start difference. First operand 639 states and 1030 transitions. Second operand has 9 states, 9 states have (on average 9.0) internal successors, (81), 8 states have internal predecessors, (81), 5 states have call successors, (12), 4 states have call predecessors, (12), 5 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2024-11-28 04:59:34,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:59:34,669 INFO L93 Difference]: Finished difference Result 1742 states and 2904 transitions. [2024-11-28 04:59:34,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 04:59:34,670 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 8 states have internal predecessors, (81), 5 states have call successors, (12), 4 states have call predecessors, (12), 5 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) Word has length 116 [2024-11-28 04:59:34,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:59:34,684 INFO L225 Difference]: With dead ends: 1742 [2024-11-28 04:59:34,684 INFO L226 Difference]: Without dead ends: 1310 [2024-11-28 04:59:34,689 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2024-11-28 04:59:34,690 INFO L435 NwaCegarLoop]: 949 mSDtfsCounter, 2761 mSDsluCounter, 3367 mSDsCounter, 0 mSdLazyCounter, 5462 mSolverCounterSat, 666 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2883 SdHoareTripleChecker+Valid, 4316 SdHoareTripleChecker+Invalid, 6128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 666 IncrementalHoareTripleChecker+Valid, 5462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:59:34,690 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2883 Valid, 4316 Invalid, 6128 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [666 Valid, 5462 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2024-11-28 04:59:34,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1310 states. [2024-11-28 04:59:34,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1310 to 1291. [2024-11-28 04:59:34,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1291 states, 1021 states have (on average 1.633692458374143) internal successors, (1668), 1068 states have internal predecessors, (1668), 214 states have call successors, (214), 42 states have call predecessors, (214), 55 states have return successors, (247), 211 states have call predecessors, (247), 209 states have call successors, (247) [2024-11-28 04:59:34,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1291 states to 1291 states and 2129 transitions. [2024-11-28 04:59:34,796 INFO L78 Accepts]: Start accepts. Automaton has 1291 states and 2129 transitions. Word has length 116 [2024-11-28 04:59:34,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:59:34,797 INFO L471 AbstractCegarLoop]: Abstraction has 1291 states and 2129 transitions. [2024-11-28 04:59:34,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 8 states have internal predecessors, (81), 5 states have call successors, (12), 4 states have call predecessors, (12), 5 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2024-11-28 04:59:34,797 INFO L276 IsEmpty]: Start isEmpty. Operand 1291 states and 2129 transitions. [2024-11-28 04:59:34,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-28 04:59:34,806 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:59:34,806 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] [2024-11-28 04:59:34,822 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-28 04:59:35,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:59:35,007 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:59:35,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:59:35,008 INFO L85 PathProgramCache]: Analyzing trace with hash 389988419, now seen corresponding path program 1 times [2024-11-28 04:59:35,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:59:35,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175386756] [2024-11-28 04:59:35,008 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:59:35,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:59:35,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:59:35,175 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 04:59:35,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:59:35,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175386756] [2024-11-28 04:59:35,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175386756] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:59:35,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143106563] [2024-11-28 04:59:35,176 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:59:35,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:59:35,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:59:35,179 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:59:35,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-28 04:59:35,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:59:35,675 INFO L256 TraceCheckSpWp]: Trace formula consists of 1787 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 04:59:35,679 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:59:35,743 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 04:59:35,743 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:59:35,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2143106563] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:59:35,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:59:35,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2024-11-28 04:59:35,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972029872] [2024-11-28 04:59:35,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:59:35,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:59:35,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:59:35,745 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:59:35,745 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:59:35,746 INFO L87 Difference]: Start difference. First operand 1291 states and 2129 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-28 04:59:36,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:59:36,366 INFO L93 Difference]: Finished difference Result 3188 states and 5399 transitions. [2024-11-28 04:59:36,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 04:59:36,367 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 117 [2024-11-28 04:59:36,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:59:36,390 INFO L225 Difference]: With dead ends: 3188 [2024-11-28 04:59:36,391 INFO L226 Difference]: Without dead ends: 2216 [2024-11-28 04:59:36,399 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-28 04:59:36,399 INFO L435 NwaCegarLoop]: 1309 mSDtfsCounter, 692 mSDsluCounter, 3282 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 703 SdHoareTripleChecker+Valid, 4591 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:59:36,400 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [703 Valid, 4591 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 04:59:36,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2216 states. [2024-11-28 04:59:36,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2216 to 2197. [2024-11-28 04:59:36,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2197 states, 1709 states have (on average 1.6430661205383266) internal successors, (2808), 1790 states have internal predecessors, (2808), 393 states have call successors, (393), 76 states have call predecessors, (393), 94 states have return successors, (464), 392 states have call predecessors, (464), 388 states have call successors, (464) [2024-11-28 04:59:36,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2197 states to 2197 states and 3665 transitions. [2024-11-28 04:59:36,564 INFO L78 Accepts]: Start accepts. Automaton has 2197 states and 3665 transitions. Word has length 117 [2024-11-28 04:59:36,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:59:36,565 INFO L471 AbstractCegarLoop]: Abstraction has 2197 states and 3665 transitions. [2024-11-28 04:59:36,565 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-28 04:59:36,565 INFO L276 IsEmpty]: Start isEmpty. Operand 2197 states and 3665 transitions. [2024-11-28 04:59:36,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-28 04:59:36,578 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:59:36,578 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] [2024-11-28 04:59:36,594 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-28 04:59:36,779 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2024-11-28 04:59:36,779 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:59:36,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:59:36,780 INFO L85 PathProgramCache]: Analyzing trace with hash -117110660, now seen corresponding path program 1 times [2024-11-28 04:59:36,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:59:36,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168083624] [2024-11-28 04:59:36,780 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:59:36,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:59:36,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:59:37,020 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 04:59:37,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:59:37,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168083624] [2024-11-28 04:59:37,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168083624] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:59:37,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892634265] [2024-11-28 04:59:37,021 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:59:37,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:59:37,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:59:37,024 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:59:37,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-28 04:59:37,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:59:37,487 INFO L256 TraceCheckSpWp]: Trace formula consists of 1787 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 04:59:37,490 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:59:37,578 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 04:59:37,578 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:59:37,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [892634265] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:59:37,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:59:37,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2024-11-28 04:59:37,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458802187] [2024-11-28 04:59:37,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:59:37,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:59:37,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:59:37,580 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:59:37,580 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:59:37,581 INFO L87 Difference]: Start difference. First operand 2197 states and 3665 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-28 04:59:37,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:59:37,710 INFO L93 Difference]: Finished difference Result 4232 states and 7111 transitions. [2024-11-28 04:59:37,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:59:37,711 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 119 [2024-11-28 04:59:37,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:59:37,735 INFO L225 Difference]: With dead ends: 4232 [2024-11-28 04:59:37,735 INFO L226 Difference]: Without dead ends: 2233 [2024-11-28 04:59:37,748 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:59:37,749 INFO L435 NwaCegarLoop]: 835 mSDtfsCounter, 5 mSDsluCounter, 1659 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2494 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 04:59:37,750 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2494 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:59:37,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2233 states. [2024-11-28 04:59:37,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2233 to 2215. [2024-11-28 04:59:37,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2215 states, 1727 states have (on average 1.643312101910828) internal successors, (2838), 1808 states have internal predecessors, (2838), 393 states have call successors, (393), 76 states have call predecessors, (393), 94 states have return successors, (464), 392 states have call predecessors, (464), 388 states have call successors, (464) [2024-11-28 04:59:37,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2215 states to 2215 states and 3695 transitions. [2024-11-28 04:59:37,910 INFO L78 Accepts]: Start accepts. Automaton has 2215 states and 3695 transitions. Word has length 119 [2024-11-28 04:59:37,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:59:37,911 INFO L471 AbstractCegarLoop]: Abstraction has 2215 states and 3695 transitions. [2024-11-28 04:59:37,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-28 04:59:37,911 INFO L276 IsEmpty]: Start isEmpty. Operand 2215 states and 3695 transitions. [2024-11-28 04:59:37,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-28 04:59:37,925 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:59:37,926 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] [2024-11-28 04:59:37,943 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-28 04:59:38,126 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:59:38,127 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:59:38,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:59:38,128 INFO L85 PathProgramCache]: Analyzing trace with hash -907489960, now seen corresponding path program 1 times [2024-11-28 04:59:38,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:59:38,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661132846] [2024-11-28 04:59:38,128 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:59:38,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:59:38,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:59:38,363 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 04:59:38,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:59:38,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661132846] [2024-11-28 04:59:38,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661132846] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:59:38,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871329681] [2024-11-28 04:59:38,364 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:59:38,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:59:38,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:59:38,367 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:59:38,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-28 04:59:38,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:59:38,886 INFO L256 TraceCheckSpWp]: Trace formula consists of 1785 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 04:59:38,890 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:59:39,032 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 04:59:39,032 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:59:39,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [871329681] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:59:39,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:59:39,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2024-11-28 04:59:39,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144063715] [2024-11-28 04:59:39,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:59:39,033 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 04:59:39,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:59:39,034 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 04:59:39,034 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-11-28 04:59:39,035 INFO L87 Difference]: Start difference. First operand 2215 states and 3695 transitions. Second operand has 8 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-28 04:59:39,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:59:39,285 INFO L93 Difference]: Finished difference Result 4174 states and 7006 transitions. [2024-11-28 04:59:39,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 04:59:39,286 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 120 [2024-11-28 04:59:39,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:59:39,308 INFO L225 Difference]: With dead ends: 4174 [2024-11-28 04:59:39,309 INFO L226 Difference]: Without dead ends: 2285 [2024-11-28 04:59:39,321 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-11-28 04:59:39,323 INFO L435 NwaCegarLoop]: 830 mSDtfsCounter, 89 mSDsluCounter, 4904 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 5734 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:59:39,324 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 5734 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:59:39,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2285 states. [2024-11-28 04:59:39,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2285 to 2218. [2024-11-28 04:59:39,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2218 states, 1729 states have (on average 1.6419895893580103) internal successors, (2839), 1811 states have internal predecessors, (2839), 393 states have call successors, (393), 76 states have call predecessors, (393), 95 states have return successors, (465), 392 states have call predecessors, (465), 388 states have call successors, (465) [2024-11-28 04:59:39,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2218 states to 2218 states and 3697 transitions. [2024-11-28 04:59:39,546 INFO L78 Accepts]: Start accepts. Automaton has 2218 states and 3697 transitions. Word has length 120 [2024-11-28 04:59:39,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:59:39,547 INFO L471 AbstractCegarLoop]: Abstraction has 2218 states and 3697 transitions. [2024-11-28 04:59:39,549 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-28 04:59:39,549 INFO L276 IsEmpty]: Start isEmpty. Operand 2218 states and 3697 transitions. [2024-11-28 04:59:39,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-28 04:59:39,561 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:59:39,562 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:59:39,578 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-28 04:59:39,762 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:59:39,763 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:59:39,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:59:39,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1946145258, now seen corresponding path program 1 times [2024-11-28 04:59:39,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:59:39,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131450503] [2024-11-28 04:59:39,764 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:59:39,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:59:39,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:59:39,981 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 04:59:39,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:59:39,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131450503] [2024-11-28 04:59:39,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131450503] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:59:39,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [885989318] [2024-11-28 04:59:39,982 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:59:39,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:59:39,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:59:39,985 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:59:39,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-28 04:59:40,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:59:40,510 INFO L256 TraceCheckSpWp]: Trace formula consists of 1788 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 04:59:40,515 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:59:40,784 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 04:59:40,785 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:59:40,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [885989318] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:59:40,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:59:40,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2024-11-28 04:59:40,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522799884] [2024-11-28 04:59:40,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:59:40,786 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:59:40,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:59:40,788 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:59:40,788 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:59:40,789 INFO L87 Difference]: Start difference. First operand 2218 states and 3697 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2024-11-28 04:59:41,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:59:41,439 INFO L93 Difference]: Finished difference Result 2425 states and 4045 transitions. [2024-11-28 04:59:41,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:59:41,440 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 120 [2024-11-28 04:59:41,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:59:41,472 INFO L225 Difference]: With dead ends: 2425 [2024-11-28 04:59:41,472 INFO L226 Difference]: Without dead ends: 2408 [2024-11-28 04:59:41,475 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:59:41,477 INFO L435 NwaCegarLoop]: 842 mSDtfsCounter, 834 mSDsluCounter, 1344 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 842 SdHoareTripleChecker+Valid, 2186 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:59:41,477 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [842 Valid, 2186 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 04:59:41,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2408 states. [2024-11-28 04:59:41,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2408 to 2230. [2024-11-28 04:59:41,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2230 states, 1741 states have (on average 1.6375646180356118) internal successors, (2851), 1823 states have internal predecessors, (2851), 393 states have call successors, (393), 76 states have call predecessors, (393), 95 states have return successors, (465), 392 states have call predecessors, (465), 388 states have call successors, (465) [2024-11-28 04:59:41,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2230 states to 2230 states and 3709 transitions. [2024-11-28 04:59:41,701 INFO L78 Accepts]: Start accepts. Automaton has 2230 states and 3709 transitions. Word has length 120 [2024-11-28 04:59:41,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:59:41,702 INFO L471 AbstractCegarLoop]: Abstraction has 2230 states and 3709 transitions. [2024-11-28 04:59:41,703 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2024-11-28 04:59:41,703 INFO L276 IsEmpty]: Start isEmpty. Operand 2230 states and 3709 transitions. [2024-11-28 04:59:41,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-28 04:59:41,715 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:59:41,715 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:59:41,732 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-28 04:59:41,916 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:59:41,916 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:59:41,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:59:41,917 INFO L85 PathProgramCache]: Analyzing trace with hash 631819057, now seen corresponding path program 1 times [2024-11-28 04:59:41,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:59:41,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546511983] [2024-11-28 04:59:41,918 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:59:41,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:59:41,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:59:42,166 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 04:59:42,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:59:42,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546511983] [2024-11-28 04:59:42,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546511983] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:59:42,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951946046] [2024-11-28 04:59:42,167 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:59:42,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:59:42,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:59:42,170 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:59:42,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-28 04:59:42,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:59:42,697 INFO L256 TraceCheckSpWp]: Trace formula consists of 1804 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 04:59:42,702 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:59:42,765 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 04:59:42,765 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:59:42,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [951946046] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:59:42,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:59:42,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2024-11-28 04:59:42,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72568258] [2024-11-28 04:59:42,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:59:42,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:59:42,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:59:42,766 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:59:42,766 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:59:42,767 INFO L87 Difference]: Start difference. First operand 2230 states and 3709 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-28 04:59:42,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:59:42,863 INFO L93 Difference]: Finished difference Result 2247 states and 3729 transitions. [2024-11-28 04:59:42,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:59:42,864 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) Word has length 126 [2024-11-28 04:59:42,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:59:42,890 INFO L225 Difference]: With dead ends: 2247 [2024-11-28 04:59:42,890 INFO L226 Difference]: Without dead ends: 2230 [2024-11-28 04:59:42,893 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:59:42,894 INFO L435 NwaCegarLoop]: 849 mSDtfsCounter, 0 mSDsluCounter, 2543 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3392 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:59:42,894 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3392 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:59:42,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2230 states. [2024-11-28 04:59:43,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2230 to 2230. [2024-11-28 04:59:43,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2230 states, 1741 states have (on average 1.6341183228029867) internal successors, (2845), 1823 states have internal predecessors, (2845), 393 states have call successors, (393), 76 states have call predecessors, (393), 95 states have return successors, (465), 392 states have call predecessors, (465), 388 states have call successors, (465) [2024-11-28 04:59:43,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2230 states to 2230 states and 3703 transitions. [2024-11-28 04:59:43,034 INFO L78 Accepts]: Start accepts. Automaton has 2230 states and 3703 transitions. Word has length 126 [2024-11-28 04:59:43,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:59:43,035 INFO L471 AbstractCegarLoop]: Abstraction has 2230 states and 3703 transitions. [2024-11-28 04:59:43,035 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-28 04:59:43,035 INFO L276 IsEmpty]: Start isEmpty. Operand 2230 states and 3703 transitions. [2024-11-28 04:59:43,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-11-28 04:59:43,048 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:59:43,048 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:59:43,064 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-28 04:59:43,248 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-28 04:59:43,250 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:59:43,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:59:43,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1701748061, now seen corresponding path program 1 times [2024-11-28 04:59:43,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:59:43,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970111961] [2024-11-28 04:59:43,251 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:59:43,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:59:43,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:59:43,616 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-28 04:59:43,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:59:43,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970111961] [2024-11-28 04:59:43,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970111961] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:59:43,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575147509] [2024-11-28 04:59:43,617 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:59:43,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:59:43,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:59:43,620 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:59:43,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-28 04:59:44,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:59:44,235 INFO L256 TraceCheckSpWp]: Trace formula consists of 1841 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-28 04:59:44,242 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:59:44,316 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:59:44,316 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:59:44,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [575147509] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:59:44,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:59:44,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 7 [2024-11-28 04:59:44,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871238740] [2024-11-28 04:59:44,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:59:44,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:59:44,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:59:44,318 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:59:44,318 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:59:44,319 INFO L87 Difference]: Start difference. First operand 2230 states and 3703 transitions. Second operand has 7 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-28 04:59:44,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:59:44,616 INFO L93 Difference]: Finished difference Result 4315 states and 7199 transitions. [2024-11-28 04:59:44,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:59:44,617 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 137 [2024-11-28 04:59:44,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:59:44,649 INFO L225 Difference]: With dead ends: 4315 [2024-11-28 04:59:44,649 INFO L226 Difference]: Without dead ends: 2310 [2024-11-28 04:59:44,662 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 138 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 04:59:44,663 INFO L435 NwaCegarLoop]: 840 mSDtfsCounter, 119 mSDsluCounter, 4098 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 4938 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:59:44,665 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 4938 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:59:44,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2310 states. [2024-11-28 04:59:44,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2310 to 2230. [2024-11-28 04:59:44,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2230 states, 1741 states have (on average 1.6341183228029867) internal successors, (2845), 1823 states have internal predecessors, (2845), 393 states have call successors, (393), 76 states have call predecessors, (393), 95 states have return successors, (465), 392 states have call predecessors, (465), 388 states have call successors, (465) [2024-11-28 04:59:44,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2230 states to 2230 states and 3703 transitions. [2024-11-28 04:59:44,799 INFO L78 Accepts]: Start accepts. Automaton has 2230 states and 3703 transitions. Word has length 137 [2024-11-28 04:59:44,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:59:44,800 INFO L471 AbstractCegarLoop]: Abstraction has 2230 states and 3703 transitions. [2024-11-28 04:59:44,800 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-28 04:59:44,800 INFO L276 IsEmpty]: Start isEmpty. Operand 2230 states and 3703 transitions. [2024-11-28 04:59:44,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-11-28 04:59:44,814 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:59:44,814 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] [2024-11-28 04:59:44,830 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-28 04:59:45,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:59:45,019 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:59:45,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:59:45,020 INFO L85 PathProgramCache]: Analyzing trace with hash 218887772, now seen corresponding path program 1 times [2024-11-28 04:59:45,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:59:45,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035964560] [2024-11-28 04:59:45,020 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:59:45,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:59:45,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:59:45,170 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-28 04:59:45,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:59:45,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035964560] [2024-11-28 04:59:45,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035964560] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:59:45,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956833899] [2024-11-28 04:59:45,171 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:59:45,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:59:45,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:59:45,174 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:59:45,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-28 04:59:45,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:59:45,709 INFO L256 TraceCheckSpWp]: Trace formula consists of 1842 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 04:59:45,714 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:59:45,739 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-28 04:59:45,740 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:59:45,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1956833899] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:59:45,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:59:45,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-11-28 04:59:45,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92918313] [2024-11-28 04:59:45,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:59:45,741 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:59:45,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:59:45,742 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:59:45,742 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:59:45,742 INFO L87 Difference]: Start difference. First operand 2230 states and 3703 transitions. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-28 04:59:45,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:59:45,898 INFO L93 Difference]: Finished difference Result 4322 states and 7208 transitions. [2024-11-28 04:59:45,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:59:45,899 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 137 [2024-11-28 04:59:45,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:59:45,922 INFO L225 Difference]: With dead ends: 4322 [2024-11-28 04:59:45,923 INFO L226 Difference]: Without dead ends: 2060 [2024-11-28 04:59:45,934 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 138 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 04:59:45,935 INFO L435 NwaCegarLoop]: 843 mSDtfsCounter, 7 mSDsluCounter, 1679 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2522 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 04:59:45,935 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2522 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:59:45,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2060 states. [2024-11-28 04:59:46,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2060 to 2060. [2024-11-28 04:59:46,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2060 states, 1586 states have (on average 1.6418663303909204) internal successors, (2604), 1662 states have internal predecessors, (2604), 388 states have call successors, (388), 73 states have call predecessors, (388), 85 states have return successors, (451), 386 states have call predecessors, (451), 383 states have call successors, (451) [2024-11-28 04:59:46,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2060 states to 2060 states and 3443 transitions. [2024-11-28 04:59:46,108 INFO L78 Accepts]: Start accepts. Automaton has 2060 states and 3443 transitions. Word has length 137 [2024-11-28 04:59:46,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:59:46,108 INFO L471 AbstractCegarLoop]: Abstraction has 2060 states and 3443 transitions. [2024-11-28 04:59:46,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-28 04:59:46,109 INFO L276 IsEmpty]: Start isEmpty. Operand 2060 states and 3443 transitions. [2024-11-28 04:59:46,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-28 04:59:46,122 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:59:46,122 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, 1] [2024-11-28 04:59:46,137 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-11-28 04:59:46,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:59:46,323 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:59:46,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:59:46,324 INFO L85 PathProgramCache]: Analyzing trace with hash -276991624, now seen corresponding path program 1 times [2024-11-28 04:59:46,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:59:46,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865654338] [2024-11-28 04:59:46,324 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:59:46,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:59:46,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:59:46,533 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 04:59:46,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:59:46,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865654338] [2024-11-28 04:59:46,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865654338] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:59:46,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128110780] [2024-11-28 04:59:46,537 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:59:46,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:59:46,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:59:46,540 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:59:46,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-28 04:59:47,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:59:47,083 INFO L256 TraceCheckSpWp]: Trace formula consists of 1847 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:59:47,087 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:59:47,151 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:59:47,152 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:59:47,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2128110780] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:59:47,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:59:47,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-28 04:59:47,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770990069] [2024-11-28 04:59:47,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:59:47,154 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:59:47,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:59:47,155 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:59:47,155 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:59:47,156 INFO L87 Difference]: Start difference. First operand 2060 states and 3443 transitions. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-28 04:59:47,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:59:47,407 INFO L93 Difference]: Finished difference Result 4122 states and 6899 transitions. [2024-11-28 04:59:47,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:59:47,408 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 139 [2024-11-28 04:59:47,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:59:47,439 INFO L225 Difference]: With dead ends: 4122 [2024-11-28 04:59:47,439 INFO L226 Difference]: Without dead ends: 2093 [2024-11-28 04:59:47,450 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:59:47,451 INFO L435 NwaCegarLoop]: 826 mSDtfsCounter, 128 mSDsluCounter, 1575 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 2401 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 04:59:47,452 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 2401 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:59:47,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2093 states. [2024-11-28 04:59:47,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2093 to 2060. [2024-11-28 04:59:47,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2060 states, 1586 states have (on average 1.641235813366961) internal successors, (2603), 1662 states have internal predecessors, (2603), 388 states have call successors, (388), 73 states have call predecessors, (388), 85 states have return successors, (451), 386 states have call predecessors, (451), 383 states have call successors, (451) [2024-11-28 04:59:47,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2060 states to 2060 states and 3442 transitions. [2024-11-28 04:59:47,579 INFO L78 Accepts]: Start accepts. Automaton has 2060 states and 3442 transitions. Word has length 139 [2024-11-28 04:59:47,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:59:47,580 INFO L471 AbstractCegarLoop]: Abstraction has 2060 states and 3442 transitions. [2024-11-28 04:59:47,580 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-28 04:59:47,580 INFO L276 IsEmpty]: Start isEmpty. Operand 2060 states and 3442 transitions. [2024-11-28 04:59:47,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-28 04:59:47,590 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:59:47,591 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] [2024-11-28 04:59:47,604 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-28 04:59:47,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-28 04:59:47,791 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:59:47,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:59:47,792 INFO L85 PathProgramCache]: Analyzing trace with hash 937511860, now seen corresponding path program 1 times [2024-11-28 04:59:47,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:59:47,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771197798] [2024-11-28 04:59:47,792 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:59:47,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:59:47,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:59:48,030 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-28 04:59:48,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:59:48,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771197798] [2024-11-28 04:59:48,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771197798] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:59:48,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:59:48,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 04:59:48,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942344690] [2024-11-28 04:59:48,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:59:48,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:59:48,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:59:48,033 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:59:48,033 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:59:48,033 INFO L87 Difference]: Start difference. First operand 2060 states and 3442 transitions. Second operand has 7 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-28 04:59:48,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:59:48,259 INFO L93 Difference]: Finished difference Result 2927 states and 4887 transitions. [2024-11-28 04:59:48,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:59:48,260 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 140 [2024-11-28 04:59:48,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:59:48,285 INFO L225 Difference]: With dead ends: 2927 [2024-11-28 04:59:48,286 INFO L226 Difference]: Without dead ends: 2095 [2024-11-28 04:59:48,290 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 04:59:48,291 INFO L435 NwaCegarLoop]: 839 mSDtfsCounter, 115 mSDsluCounter, 4093 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 4932 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:59:48,292 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 4932 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:59:48,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2095 states. [2024-11-28 04:59:48,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2095 to 2060. [2024-11-28 04:59:48,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2060 states, 1586 states have (on average 1.641235813366961) internal successors, (2603), 1662 states have internal predecessors, (2603), 388 states have call successors, (388), 73 states have call predecessors, (388), 85 states have return successors, (451), 386 states have call predecessors, (451), 383 states have call successors, (451) [2024-11-28 04:59:48,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2060 states to 2060 states and 3442 transitions. [2024-11-28 04:59:48,411 INFO L78 Accepts]: Start accepts. Automaton has 2060 states and 3442 transitions. Word has length 140 [2024-11-28 04:59:48,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:59:48,412 INFO L471 AbstractCegarLoop]: Abstraction has 2060 states and 3442 transitions. [2024-11-28 04:59:48,412 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-28 04:59:48,412 INFO L276 IsEmpty]: Start isEmpty. Operand 2060 states and 3442 transitions. [2024-11-28 04:59:48,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-28 04:59:48,422 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:59:48,422 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:59:48,422 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-28 04:59:48,423 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:59:48,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:59:48,423 INFO L85 PathProgramCache]: Analyzing trace with hash 720677777, now seen corresponding path program 1 times [2024-11-28 04:59:48,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:59:48,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456246388] [2024-11-28 04:59:48,424 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:59:48,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:59:48,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:59:48,574 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-28 04:59:48,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:59:48,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456246388] [2024-11-28 04:59:48,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456246388] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:59:48,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:59:48,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:59:48,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128350485] [2024-11-28 04:59:48,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:59:48,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:59:48,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:59:48,578 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:59:48,578 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:59:48,578 INFO L87 Difference]: Start difference. First operand 2060 states and 3442 transitions. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-28 04:59:48,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:59:48,683 INFO L93 Difference]: Finished difference Result 2976 states and 4969 transitions. [2024-11-28 04:59:48,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:59:48,684 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 140 [2024-11-28 04:59:48,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:59:48,696 INFO L225 Difference]: With dead ends: 2976 [2024-11-28 04:59:48,696 INFO L226 Difference]: Without dead ends: 931 [2024-11-28 04:59:48,706 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 04:59:48,706 INFO L435 NwaCegarLoop]: 841 mSDtfsCounter, 8 mSDsluCounter, 1678 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2519 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 04:59:48,710 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 2519 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:59:48,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 931 states. [2024-11-28 04:59:48,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 931 to 931. [2024-11-28 04:59:48,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 931 states, 733 states have (on average 1.6330150068212823) internal successors, (1197), 766 states have internal predecessors, (1197), 158 states have call successors, (158), 40 states have call predecessors, (158), 39 states have return successors, (162), 150 states have call predecessors, (162), 153 states have call successors, (162) [2024-11-28 04:59:48,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 931 states to 931 states and 1517 transitions. [2024-11-28 04:59:48,766 INFO L78 Accepts]: Start accepts. Automaton has 931 states and 1517 transitions. Word has length 140 [2024-11-28 04:59:48,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:59:48,766 INFO L471 AbstractCegarLoop]: Abstraction has 931 states and 1517 transitions. [2024-11-28 04:59:48,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-28 04:59:48,767 INFO L276 IsEmpty]: Start isEmpty. Operand 931 states and 1517 transitions. [2024-11-28 04:59:48,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-28 04:59:48,771 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:59:48,771 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] [2024-11-28 04:59:48,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-28 04:59:48,772 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:59:48,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:59:48,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1188289273, now seen corresponding path program 1 times [2024-11-28 04:59:48,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:59:48,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493011241] [2024-11-28 04:59:48,774 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:59:48,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:59:48,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:59:49,054 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-28 04:59:49,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:59:49,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493011241] [2024-11-28 04:59:49,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493011241] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:59:49,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:59:49,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 04:59:49,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652371178] [2024-11-28 04:59:49,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:59:49,057 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:59:49,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:59:49,057 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:59:49,058 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:59:49,058 INFO L87 Difference]: Start difference. First operand 931 states and 1517 transitions. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 5 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2024-11-28 04:59:52,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:59:52,700 INFO L93 Difference]: Finished difference Result 3052 states and 5116 transitions. [2024-11-28 04:59:52,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 04:59:52,701 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 5 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) Word has length 141 [2024-11-28 04:59:52,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:59:52,720 INFO L225 Difference]: With dead ends: 3052 [2024-11-28 04:59:52,720 INFO L226 Difference]: Without dead ends: 2225 [2024-11-28 04:59:52,725 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2024-11-28 04:59:52,726 INFO L435 NwaCegarLoop]: 406 mSDtfsCounter, 2258 mSDsluCounter, 1509 mSDsCounter, 0 mSdLazyCounter, 3449 mSolverCounterSat, 475 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2335 SdHoareTripleChecker+Valid, 1915 SdHoareTripleChecker+Invalid, 3924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 475 IncrementalHoareTripleChecker+Valid, 3449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:59:52,726 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2335 Valid, 1915 Invalid, 3924 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [475 Valid, 3449 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-28 04:59:52,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2225 states. [2024-11-28 04:59:52,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2225 to 2080. [2024-11-28 04:59:52,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2080 states, 1638 states have (on average 1.6587301587301588) internal successors, (2717), 1710 states have internal predecessors, (2717), 350 states have call successors, (350), 82 states have call predecessors, (350), 91 states have return successors, (392), 337 states have call predecessors, (392), 345 states have call successors, (392) [2024-11-28 04:59:52,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2080 states to 2080 states and 3459 transitions. [2024-11-28 04:59:52,852 INFO L78 Accepts]: Start accepts. Automaton has 2080 states and 3459 transitions. Word has length 141 [2024-11-28 04:59:52,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:59:52,853 INFO L471 AbstractCegarLoop]: Abstraction has 2080 states and 3459 transitions. [2024-11-28 04:59:52,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 5 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2024-11-28 04:59:52,853 INFO L276 IsEmpty]: Start isEmpty. Operand 2080 states and 3459 transitions. [2024-11-28 04:59:52,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-28 04:59:52,858 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:59:52,858 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] [2024-11-28 04:59:52,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-28 04:59:52,858 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:59:52,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:59:52,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1785915707, now seen corresponding path program 1 times [2024-11-28 04:59:52,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:59:52,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193664497] [2024-11-28 04:59:52,859 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:59:52,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:59:52,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:59:53,037 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-28 04:59:53,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:59:53,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193664497] [2024-11-28 04:59:53,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193664497] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:59:53,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:59:53,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:59:53,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254831097] [2024-11-28 04:59:53,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:59:53,039 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:59:53,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:59:53,039 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:59:53,040 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:59:53,040 INFO L87 Difference]: Start difference. First operand 2080 states and 3459 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-28 04:59:53,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:59:53,203 INFO L93 Difference]: Finished difference Result 4081 states and 6845 transitions. [2024-11-28 04:59:53,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:59:53,203 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 146 [2024-11-28 04:59:53,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:59:53,223 INFO L225 Difference]: With dead ends: 4081 [2024-11-28 04:59:53,223 INFO L226 Difference]: Without dead ends: 2105 [2024-11-28 04:59:53,231 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:59:53,232 INFO L435 NwaCegarLoop]: 808 mSDtfsCounter, 0 mSDsluCounter, 2394 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3202 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:59:53,232 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3202 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:59:53,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2105 states. [2024-11-28 04:59:53,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2105 to 2099. [2024-11-28 04:59:53,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2099 states, 1653 states have (on average 1.6521476104053237) internal successors, (2731), 1724 states have internal predecessors, (2731), 349 states have call successors, (349), 82 states have call predecessors, (349), 96 states have return successors, (406), 342 states have call predecessors, (406), 344 states have call successors, (406) [2024-11-28 04:59:53,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2099 states to 2099 states and 3486 transitions. [2024-11-28 04:59:53,411 INFO L78 Accepts]: Start accepts. Automaton has 2099 states and 3486 transitions. Word has length 146 [2024-11-28 04:59:53,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:59:53,412 INFO L471 AbstractCegarLoop]: Abstraction has 2099 states and 3486 transitions. [2024-11-28 04:59:53,412 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-28 04:59:53,412 INFO L276 IsEmpty]: Start isEmpty. Operand 2099 states and 3486 transitions. [2024-11-28 04:59:53,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-11-28 04:59:53,418 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:59:53,419 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] [2024-11-28 04:59:53,419 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-28 04:59:53,419 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:59:53,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:59:53,420 INFO L85 PathProgramCache]: Analyzing trace with hash 93446227, now seen corresponding path program 1 times [2024-11-28 04:59:53,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:59:53,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217532688] [2024-11-28 04:59:53,420 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:59:53,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:59:53,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:59:53,884 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-28 04:59:53,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:59:53,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217532688] [2024-11-28 04:59:53,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217532688] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:59:53,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:59:53,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 04:59:53,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049441965] [2024-11-28 04:59:53,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:59:53,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 04:59:53,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:59:53,887 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 04:59:53,887 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:59:53,888 INFO L87 Difference]: Start difference. First operand 2099 states and 3486 transitions. Second operand has 8 states, 8 states have (on average 13.25) internal successors, (106), 8 states have internal predecessors, (106), 7 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2024-11-28 04:59:57,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:59:57,117 INFO L93 Difference]: Finished difference Result 6758 states and 11418 transitions. [2024-11-28 04:59:57,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:59:57,118 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.25) internal successors, (106), 8 states have internal predecessors, (106), 7 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) Word has length 150 [2024-11-28 04:59:57,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:59:57,164 INFO L225 Difference]: With dead ends: 6758 [2024-11-28 04:59:57,164 INFO L226 Difference]: Without dead ends: 4758 [2024-11-28 04:59:57,177 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:59:57,178 INFO L435 NwaCegarLoop]: 597 mSDtfsCounter, 3650 mSDsluCounter, 1092 mSDsCounter, 0 mSdLazyCounter, 2704 mSolverCounterSat, 902 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3792 SdHoareTripleChecker+Valid, 1689 SdHoareTripleChecker+Invalid, 3606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 902 IncrementalHoareTripleChecker+Valid, 2704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-28 04:59:57,178 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3792 Valid, 1689 Invalid, 3606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [902 Valid, 2704 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-28 04:59:57,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4758 states. [2024-11-28 04:59:57,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4758 to 4659. [2024-11-28 04:59:57,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4659 states, 3628 states have (on average 1.6510474090407938) internal successors, (5990), 3791 states have internal predecessors, (5990), 816 states have call successors, (816), 182 states have call predecessors, (816), 214 states have return successors, (1005), 807 states have call predecessors, (1005), 811 states have call successors, (1005) [2024-11-28 04:59:57,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4659 states to 4659 states and 7811 transitions. [2024-11-28 04:59:57,535 INFO L78 Accepts]: Start accepts. Automaton has 4659 states and 7811 transitions. Word has length 150 [2024-11-28 04:59:57,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:59:57,536 INFO L471 AbstractCegarLoop]: Abstraction has 4659 states and 7811 transitions. [2024-11-28 04:59:57,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.25) internal successors, (106), 8 states have internal predecessors, (106), 7 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2024-11-28 04:59:57,537 INFO L276 IsEmpty]: Start isEmpty. Operand 4659 states and 7811 transitions. [2024-11-28 04:59:57,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-28 04:59:57,540 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:59:57,540 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] [2024-11-28 04:59:57,541 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-11-28 04:59:57,541 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:59:57,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:59:57,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1839739197, now seen corresponding path program 1 times [2024-11-28 04:59:57,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:59:57,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364306900] [2024-11-28 04:59:57,542 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:59:57,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:59:57,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:59:57,857 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-28 04:59:57,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:59:57,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364306900] [2024-11-28 04:59:57,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364306900] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:59:57,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1583556413] [2024-11-28 04:59:57,858 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:59:57,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:59:57,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:59:57,861 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:59:57,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-28 04:59:58,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:59:58,424 INFO L256 TraceCheckSpWp]: Trace formula consists of 1879 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:59:58,430 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:59:58,487 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-28 04:59:58,487 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:59:58,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1583556413] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:59:58,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:59:58,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2024-11-28 04:59:58,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206397154] [2024-11-28 04:59:58,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:59:58,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:59:58,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:59:58,489 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:59:58,489 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-11-28 04:59:58,489 INFO L87 Difference]: Start difference. First operand 4659 states and 7811 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-28 04:59:58,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:59:58,873 INFO L93 Difference]: Finished difference Result 9072 states and 15471 transitions. [2024-11-28 04:59:58,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:59:58,874 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), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 153 [2024-11-28 04:59:58,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:59:58,913 INFO L225 Difference]: With dead ends: 9072 [2024-11-28 04:59:58,913 INFO L226 Difference]: Without dead ends: 4717 [2024-11-28 04:59:58,931 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 154 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 04:59:58,932 INFO L435 NwaCegarLoop]: 869 mSDtfsCounter, 266 mSDsluCounter, 1461 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 2330 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:59:58,932 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [276 Valid, 2330 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:59:58,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4717 states. [2024-11-28 04:59:59,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4717 to 4663. [2024-11-28 04:59:59,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4663 states, 3630 states have (on average 1.6355371900826445) internal successors, (5937), 3795 states have internal predecessors, (5937), 816 states have call successors, (816), 182 states have call predecessors, (816), 216 states have return successors, (1009), 807 states have call predecessors, (1009), 811 states have call successors, (1009) [2024-11-28 04:59:59,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4663 states to 4663 states and 7762 transitions. [2024-11-28 04:59:59,238 INFO L78 Accepts]: Start accepts. Automaton has 4663 states and 7762 transitions. Word has length 153 [2024-11-28 04:59:59,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:59:59,239 INFO L471 AbstractCegarLoop]: Abstraction has 4663 states and 7762 transitions. [2024-11-28 04:59:59,239 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), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-28 04:59:59,239 INFO L276 IsEmpty]: Start isEmpty. Operand 4663 states and 7762 transitions. [2024-11-28 04:59:59,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-28 04:59:59,243 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:59:59,243 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 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 04:59:59,258 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2024-11-28 04:59:59,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-11-28 04:59:59,445 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:59:59,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:59:59,445 INFO L85 PathProgramCache]: Analyzing trace with hash 439745, now seen corresponding path program 1 times [2024-11-28 04:59:59,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:59:59,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143698073] [2024-11-28 04:59:59,446 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:59:59,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:59:59,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:59:59,779 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-28 04:59:59,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:59:59,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143698073] [2024-11-28 04:59:59,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143698073] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:59:59,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [718130110] [2024-11-28 04:59:59,779 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:59:59,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:59:59,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:59:59,786 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:59:59,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-28 05:00:00,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:00:00,332 INFO L256 TraceCheckSpWp]: Trace formula consists of 1895 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 05:00:00,335 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:00:00,377 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-28 05:00:00,377 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:00:00,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [718130110] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:00:00,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:00:00,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2024-11-28 05:00:00,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136620191] [2024-11-28 05:00:00,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:00:00,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:00:00,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:00:00,379 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:00:00,379 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-11-28 05:00:00,380 INFO L87 Difference]: Start difference. First operand 4663 states and 7762 transitions. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-28 05:00:00,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:00:00,754 INFO L93 Difference]: Finished difference Result 9279 states and 15677 transitions. [2024-11-28 05:00:00,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 05:00:00,754 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 157 [2024-11-28 05:00:00,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:00:00,797 INFO L225 Difference]: With dead ends: 9279 [2024-11-28 05:00:00,797 INFO L226 Difference]: Without dead ends: 4713 [2024-11-28 05:00:00,820 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 159 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 05:00:00,820 INFO L435 NwaCegarLoop]: 786 mSDtfsCounter, 14 mSDsluCounter, 1538 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2324 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:00:00,821 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2324 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 05:00:00,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4713 states. [2024-11-28 05:00:01,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4713 to 4713. [2024-11-28 05:00:01,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4713 states, 3670 states have (on average 1.6256130790190735) internal successors, (5966), 3840 states have internal predecessors, (5966), 816 states have call successors, (816), 187 states have call predecessors, (816), 226 states have return successors, (1019), 807 states have call predecessors, (1019), 811 states have call successors, (1019) [2024-11-28 05:00:01,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4713 states to 4713 states and 7801 transitions. [2024-11-28 05:00:01,128 INFO L78 Accepts]: Start accepts. Automaton has 4713 states and 7801 transitions. Word has length 157 [2024-11-28 05:00:01,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:00:01,128 INFO L471 AbstractCegarLoop]: Abstraction has 4713 states and 7801 transitions. [2024-11-28 05:00:01,129 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-28 05:00:01,129 INFO L276 IsEmpty]: Start isEmpty. Operand 4713 states and 7801 transitions. [2024-11-28 05:00:01,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-11-28 05:00:01,132 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:00:01,133 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 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] [2024-11-28 05:00:01,147 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-11-28 05:00:01,333 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-11-28 05:00:01,334 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:00:01,334 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:00:01,334 INFO L85 PathProgramCache]: Analyzing trace with hash 821082646, now seen corresponding path program 1 times [2024-11-28 05:00:01,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:00:01,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121565467] [2024-11-28 05:00:01,335 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:00:01,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:00:01,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:00:01,614 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-28 05:00:01,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:00:01,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121565467] [2024-11-28 05:00:01,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121565467] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:00:01,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:00:01,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 05:00:01,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946875355] [2024-11-28 05:00:01,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:00:01,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 05:00:01,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:00:01,617 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 05:00:01,617 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 05:00:01,617 INFO L87 Difference]: Start difference. First operand 4713 states and 7801 transitions. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 5 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2024-11-28 05:00:04,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:00:04,981 INFO L93 Difference]: Finished difference Result 9092 states and 15141 transitions. [2024-11-28 05:00:04,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 05:00:04,981 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 5 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) Word has length 158 [2024-11-28 05:00:04,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:00:05,022 INFO L225 Difference]: With dead ends: 9092 [2024-11-28 05:00:05,022 INFO L226 Difference]: Without dead ends: 5237 [2024-11-28 05:00:05,043 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2024-11-28 05:00:05,043 INFO L435 NwaCegarLoop]: 380 mSDtfsCounter, 1942 mSDsluCounter, 1304 mSDsCounter, 0 mSdLazyCounter, 2982 mSolverCounterSat, 441 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2016 SdHoareTripleChecker+Valid, 1684 SdHoareTripleChecker+Invalid, 3423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 441 IncrementalHoareTripleChecker+Valid, 2982 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-28 05:00:05,044 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2016 Valid, 1684 Invalid, 3423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [441 Valid, 2982 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-28 05:00:05,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5237 states. [2024-11-28 05:00:05,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5237 to 4862. [2024-11-28 05:00:05,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4862 states, 3780 states have (on average 1.615873015873016) internal successors, (6108), 3960 states have internal predecessors, (6108), 830 states have call successors, (830), 202 states have call predecessors, (830), 251 states have return successors, (1070), 821 states have call predecessors, (1070), 825 states have call successors, (1070) [2024-11-28 05:00:05,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4862 states to 4862 states and 8008 transitions. [2024-11-28 05:00:05,384 INFO L78 Accepts]: Start accepts. Automaton has 4862 states and 8008 transitions. Word has length 158 [2024-11-28 05:00:05,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:00:05,385 INFO L471 AbstractCegarLoop]: Abstraction has 4862 states and 8008 transitions. [2024-11-28 05:00:05,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 5 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2024-11-28 05:00:05,385 INFO L276 IsEmpty]: Start isEmpty. Operand 4862 states and 8008 transitions. [2024-11-28 05:00:05,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-11-28 05:00:05,389 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:00:05,389 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:00:05,389 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-11-28 05:00:05,390 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:00:05,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:00:05,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1334896875, now seen corresponding path program 1 times [2024-11-28 05:00:05,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:00:05,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672583606] [2024-11-28 05:00:05,391 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:00:05,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:00:05,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:00:06,253 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-28 05:00:06,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:00:06,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672583606] [2024-11-28 05:00:06,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672583606] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:00:06,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [631549217] [2024-11-28 05:00:06,255 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:00:06,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:00:06,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:00:06,258 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:00:06,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-28 05:00:06,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:00:06,781 INFO L256 TraceCheckSpWp]: Trace formula consists of 1937 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 05:00:06,786 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:00:06,813 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-28 05:00:06,813 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:00:06,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [631549217] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:00:06,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:00:06,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [13] total 14 [2024-11-28 05:00:06,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317706206] [2024-11-28 05:00:06,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:00:06,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:00:06,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:00:06,815 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:00:06,816 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2024-11-28 05:00:06,816 INFO L87 Difference]: Start difference. First operand 4862 states and 8008 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-28 05:00:07,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:00:07,263 INFO L93 Difference]: Finished difference Result 10187 states and 16907 transitions. [2024-11-28 05:00:07,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:00:07,264 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 165 [2024-11-28 05:00:07,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:00:07,319 INFO L225 Difference]: With dead ends: 10187 [2024-11-28 05:00:07,319 INFO L226 Difference]: Without dead ends: 6156 [2024-11-28 05:00:07,340 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2024-11-28 05:00:07,341 INFO L435 NwaCegarLoop]: 1247 mSDtfsCounter, 708 mSDsluCounter, 789 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 708 SdHoareTripleChecker+Valid, 2036 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 05:00:07,341 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [708 Valid, 2036 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 05:00:07,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6156 states. [2024-11-28 05:00:07,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6156 to 5823. [2024-11-28 05:00:07,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5823 states, 4539 states have (on average 1.6186384666226041) internal successors, (7347), 4742 states have internal predecessors, (7347), 989 states have call successors, (989), 243 states have call predecessors, (989), 294 states have return successors, (1264), 983 states have call predecessors, (1264), 984 states have call successors, (1264) [2024-11-28 05:00:08,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5823 states to 5823 states and 9600 transitions. [2024-11-28 05:00:08,037 INFO L78 Accepts]: Start accepts. Automaton has 5823 states and 9600 transitions. Word has length 165 [2024-11-28 05:00:08,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:00:08,037 INFO L471 AbstractCegarLoop]: Abstraction has 5823 states and 9600 transitions. [2024-11-28 05:00:08,038 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-28 05:00:08,038 INFO L276 IsEmpty]: Start isEmpty. Operand 5823 states and 9600 transitions. [2024-11-28 05:00:08,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-11-28 05:00:08,051 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:00:08,052 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:00:08,092 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-11-28 05:00:08,252 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-28 05:00:08,253 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:00:08,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:00:08,254 INFO L85 PathProgramCache]: Analyzing trace with hash -510470291, now seen corresponding path program 1 times [2024-11-28 05:00:08,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:00:08,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526189511] [2024-11-28 05:00:08,255 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:00:08,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:00:08,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:00:08,955 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-28 05:00:08,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:00:08,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526189511] [2024-11-28 05:00:08,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526189511] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:00:08,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2093775386] [2024-11-28 05:00:08,956 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:00:08,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:00:08,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:00:08,959 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:00:08,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-28 05:00:09,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:00:09,526 INFO L256 TraceCheckSpWp]: Trace formula consists of 1936 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 05:00:09,532 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:00:09,873 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-28 05:00:09,873 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:00:09,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2093775386] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:00:09,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:00:09,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13] total 18 [2024-11-28 05:00:09,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038421600] [2024-11-28 05:00:09,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:00:09,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 05:00:09,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:00:09,875 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 05:00:09,876 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2024-11-28 05:00:09,876 INFO L87 Difference]: Start difference. First operand 5823 states and 9600 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 5 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2024-11-28 05:00:13,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:00:13,606 INFO L93 Difference]: Finished difference Result 11494 states and 19113 transitions. [2024-11-28 05:00:13,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 05:00:13,607 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 5 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) Word has length 165 [2024-11-28 05:00:13,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:00:13,641 INFO L225 Difference]: With dead ends: 11494 [2024-11-28 05:00:13,641 INFO L226 Difference]: Without dead ends: 6396 [2024-11-28 05:00:13,655 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=519, Unknown=0, NotChecked=0, Total=600 [2024-11-28 05:00:13,656 INFO L435 NwaCegarLoop]: 504 mSDtfsCounter, 1681 mSDsluCounter, 1876 mSDsCounter, 0 mSdLazyCounter, 3413 mSolverCounterSat, 338 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1763 SdHoareTripleChecker+Valid, 2380 SdHoareTripleChecker+Invalid, 3751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 338 IncrementalHoareTripleChecker+Valid, 3413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-28 05:00:13,656 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1763 Valid, 2380 Invalid, 3751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [338 Valid, 3413 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-28 05:00:13,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6396 states. [2024-11-28 05:00:14,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6396 to 5929. [2024-11-28 05:00:14,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5929 states, 4603 states have (on average 1.6139474255920052) internal successors, (7429), 4820 states have internal predecessors, (7429), 1021 states have call successors, (1021), 243 states have call predecessors, (1021), 304 states have return successors, (1394), 1011 states have call predecessors, (1394), 1016 states have call successors, (1394) [2024-11-28 05:00:14,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5929 states to 5929 states and 9844 transitions. [2024-11-28 05:00:14,256 INFO L78 Accepts]: Start accepts. Automaton has 5929 states and 9844 transitions. Word has length 165 [2024-11-28 05:00:14,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:00:14,256 INFO L471 AbstractCegarLoop]: Abstraction has 5929 states and 9844 transitions. [2024-11-28 05:00:14,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 5 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2024-11-28 05:00:14,257 INFO L276 IsEmpty]: Start isEmpty. Operand 5929 states and 9844 transitions. [2024-11-28 05:00:14,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-11-28 05:00:14,261 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:00:14,261 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:00:14,279 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-11-28 05:00:14,462 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-28 05:00:14,463 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:00:14,463 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:00:14,464 INFO L85 PathProgramCache]: Analyzing trace with hash -409558324, now seen corresponding path program 1 times [2024-11-28 05:00:14,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:00:14,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061528945] [2024-11-28 05:00:14,464 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:00:14,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:00:14,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:00:15,070 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-28 05:00:15,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:00:15,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061528945] [2024-11-28 05:00:15,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061528945] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:00:15,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:00:15,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 05:00:15,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888118243] [2024-11-28 05:00:15,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:00:15,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 05:00:15,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:00:15,073 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 05:00:15,073 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 05:00:15,078 INFO L87 Difference]: Start difference. First operand 5929 states and 9844 transitions. Second operand has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 4 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (17), 5 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-28 05:00:17,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:00:17,530 INFO L93 Difference]: Finished difference Result 11785 states and 19683 transitions. [2024-11-28 05:00:17,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 05:00:17,531 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 4 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (17), 5 states have call predecessors, (17), 3 states have call successors, (17) Word has length 165 [2024-11-28 05:00:17,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:00:17,584 INFO L225 Difference]: With dead ends: 11785 [2024-11-28 05:00:17,584 INFO L226 Difference]: Without dead ends: 5963 [2024-11-28 05:00:17,607 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-11-28 05:00:17,608 INFO L435 NwaCegarLoop]: 402 mSDtfsCounter, 1172 mSDsluCounter, 1311 mSDsCounter, 0 mSdLazyCounter, 2354 mSolverCounterSat, 323 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1172 SdHoareTripleChecker+Valid, 1713 SdHoareTripleChecker+Invalid, 2677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 323 IncrementalHoareTripleChecker+Valid, 2354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-28 05:00:17,608 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1172 Valid, 1713 Invalid, 2677 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [323 Valid, 2354 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-28 05:00:17,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5963 states. [2024-11-28 05:00:18,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5963 to 5941. [2024-11-28 05:00:18,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5941 states, 4609 states have (on average 1.6053373833803428) internal successors, (7399), 4832 states have internal predecessors, (7399), 1021 states have call successors, (1021), 243 states have call predecessors, (1021), 310 states have return successors, (1442), 1011 states have call predecessors, (1442), 1016 states have call successors, (1442) [2024-11-28 05:00:18,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5941 states to 5941 states and 9862 transitions. [2024-11-28 05:00:18,243 INFO L78 Accepts]: Start accepts. Automaton has 5941 states and 9862 transitions. Word has length 165 [2024-11-28 05:00:18,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:00:18,245 INFO L471 AbstractCegarLoop]: Abstraction has 5941 states and 9862 transitions. [2024-11-28 05:00:18,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 4 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (17), 5 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-28 05:00:18,249 INFO L276 IsEmpty]: Start isEmpty. Operand 5941 states and 9862 transitions. [2024-11-28 05:00:18,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-11-28 05:00:18,258 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:00:18,259 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:00:18,259 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-11-28 05:00:18,259 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:00:18,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:00:18,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1934435827, now seen corresponding path program 1 times [2024-11-28 05:00:18,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:00:18,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139106100] [2024-11-28 05:00:18,260 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:00:18,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:00:18,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:00:18,737 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-28 05:00:18,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:00:18,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139106100] [2024-11-28 05:00:18,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139106100] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:00:18,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:00:18,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 05:00:18,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58769741] [2024-11-28 05:00:18,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:00:18,742 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 05:00:18,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:00:18,743 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 05:00:18,744 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:00:18,744 INFO L87 Difference]: Start difference. First operand 5941 states and 9862 transitions. Second operand has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 4 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-28 05:00:22,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:00:22,804 INFO L93 Difference]: Finished difference Result 20233 states and 34371 transitions. [2024-11-28 05:00:22,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:00:22,805 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 4 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) Word has length 166 [2024-11-28 05:00:22,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:00:22,885 INFO L225 Difference]: With dead ends: 20233 [2024-11-28 05:00:22,885 INFO L226 Difference]: Without dead ends: 14407 [2024-11-28 05:00:22,908 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 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 05:00:22,908 INFO L435 NwaCegarLoop]: 429 mSDtfsCounter, 1976 mSDsluCounter, 723 mSDsCounter, 0 mSdLazyCounter, 2180 mSolverCounterSat, 449 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2045 SdHoareTripleChecker+Valid, 1152 SdHoareTripleChecker+Invalid, 2629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 449 IncrementalHoareTripleChecker+Valid, 2180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-28 05:00:22,909 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2045 Valid, 1152 Invalid, 2629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [449 Valid, 2180 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-28 05:00:22,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14407 states. [2024-11-28 05:00:24,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14407 to 13904. [2024-11-28 05:00:24,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13904 states, 10634 states have (on average 1.5978935489937935) internal successors, (16992), 11186 states have internal predecessors, (16992), 2563 states have call successors, (2563), 522 states have call predecessors, (2563), 706 states have return successors, (3918), 2547 states have call predecessors, (3918), 2558 states have call successors, (3918) [2024-11-28 05:00:24,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13904 states to 13904 states and 23473 transitions. [2024-11-28 05:00:24,432 INFO L78 Accepts]: Start accepts. Automaton has 13904 states and 23473 transitions. Word has length 166 [2024-11-28 05:00:24,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:00:24,433 INFO L471 AbstractCegarLoop]: Abstraction has 13904 states and 23473 transitions. [2024-11-28 05:00:24,433 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 4 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-28 05:00:24,434 INFO L276 IsEmpty]: Start isEmpty. Operand 13904 states and 23473 transitions. [2024-11-28 05:00:24,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-11-28 05:00:24,446 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:00:24,447 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:00:24,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-11-28 05:00:24,448 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:00:24,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:00:24,449 INFO L85 PathProgramCache]: Analyzing trace with hash 386731531, now seen corresponding path program 1 times [2024-11-28 05:00:24,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:00:24,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908761284] [2024-11-28 05:00:24,449 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:00:24,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:00:24,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:00:25,011 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-28 05:00:25,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:00:25,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908761284] [2024-11-28 05:00:25,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908761284] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:00:25,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:00:25,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 05:00:25,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320043568] [2024-11-28 05:00:25,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:00:25,013 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:00:25,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:00:25,014 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:00:25,014 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:00:25,014 INFO L87 Difference]: Start difference. First operand 13904 states and 23473 transitions. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 4 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-28 05:00:29,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:00:29,310 INFO L93 Difference]: Finished difference Result 42095 states and 72331 transitions. [2024-11-28 05:00:29,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 05:00:29,311 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 4 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 172 [2024-11-28 05:00:29,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:00:29,572 INFO L225 Difference]: With dead ends: 42095 [2024-11-28 05:00:29,573 INFO L226 Difference]: Without dead ends: 28295 [2024-11-28 05:00:29,669 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 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 05:00:29,670 INFO L435 NwaCegarLoop]: 322 mSDtfsCounter, 1753 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 1044 mSolverCounterSat, 391 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1828 SdHoareTripleChecker+Valid, 608 SdHoareTripleChecker+Invalid, 1435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 391 IncrementalHoareTripleChecker+Valid, 1044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-28 05:00:29,671 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1828 Valid, 608 Invalid, 1435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [391 Valid, 1044 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-28 05:00:29,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28295 states. [2024-11-28 05:00:32,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28295 to 28293. [2024-11-28 05:00:32,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28293 states, 21652 states have (on average 1.5853038980232772) internal successors, (34325), 22828 states have internal predecessors, (34325), 5146 states have call successors, (5146), 1040 states have call predecessors, (5146), 1494 states have return successors, (8804), 5128 states have call predecessors, (8804), 5141 states have call successors, (8804) [2024-11-28 05:00:32,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28293 states to 28293 states and 48275 transitions. [2024-11-28 05:00:32,680 INFO L78 Accepts]: Start accepts. Automaton has 28293 states and 48275 transitions. Word has length 172 [2024-11-28 05:00:32,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:00:32,681 INFO L471 AbstractCegarLoop]: Abstraction has 28293 states and 48275 transitions. [2024-11-28 05:00:32,681 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 4 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-28 05:00:32,681 INFO L276 IsEmpty]: Start isEmpty. Operand 28293 states and 48275 transitions. [2024-11-28 05:00:32,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-11-28 05:00:32,697 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:00:32,698 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:00:32,698 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-11-28 05:00:32,698 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:00:32,699 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:00:32,699 INFO L85 PathProgramCache]: Analyzing trace with hash -1823206199, now seen corresponding path program 1 times [2024-11-28 05:00:32,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:00:32,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317702971] [2024-11-28 05:00:32,700 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:00:32,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:00:32,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:00:33,798 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-28 05:00:33,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:00:33,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317702971] [2024-11-28 05:00:33,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317702971] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:00:33,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261579885] [2024-11-28 05:00:33,798 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:00:33,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:00:33,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:00:33,804 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:00:33,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-28 05:00:34,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:00:34,409 INFO L256 TraceCheckSpWp]: Trace formula consists of 1961 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 05:00:34,413 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:00:34,450 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-28 05:00:34,451 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:00:34,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1261579885] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:00:34,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:00:34,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 11 [2024-11-28 05:00:34,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3612567] [2024-11-28 05:00:34,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:00:34,452 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 05:00:34,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:00:34,452 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 05:00:34,452 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-28 05:00:34,452 INFO L87 Difference]: Start difference. First operand 28293 states and 48275 transitions. Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-28 05:00:36,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:00:36,242 INFO L93 Difference]: Finished difference Result 28422 states and 48444 transitions. [2024-11-28 05:00:36,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 05:00:36,243 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) Word has length 175 [2024-11-28 05:00:36,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:00:36,409 INFO L225 Difference]: With dead ends: 28422 [2024-11-28 05:00:36,409 INFO L226 Difference]: Without dead ends: 28401 [2024-11-28 05:00:36,425 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-28 05:00:36,425 INFO L435 NwaCegarLoop]: 796 mSDtfsCounter, 0 mSDsluCounter, 2374 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3170 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 05:00:36,426 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3170 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 05:00:36,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28401 states. [2024-11-28 05:00:38,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28401 to 28401. [2024-11-28 05:00:38,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28401 states, 21760 states have (on average 1.5807444852941177) internal successors, (34397), 22936 states have internal predecessors, (34397), 5146 states have call successors, (5146), 1040 states have call predecessors, (5146), 1494 states have return successors, (8804), 5128 states have call predecessors, (8804), 5141 states have call successors, (8804) [2024-11-28 05:00:38,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28401 states to 28401 states and 48347 transitions. [2024-11-28 05:00:38,824 INFO L78 Accepts]: Start accepts. Automaton has 28401 states and 48347 transitions. Word has length 175 [2024-11-28 05:00:38,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:00:38,825 INFO L471 AbstractCegarLoop]: Abstraction has 28401 states and 48347 transitions. [2024-11-28 05:00:38,825 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-28 05:00:38,825 INFO L276 IsEmpty]: Start isEmpty. Operand 28401 states and 48347 transitions. [2024-11-28 05:00:38,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-11-28 05:00:38,860 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:00:38,860 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:00:38,877 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-11-28 05:00:39,061 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:00:39,061 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:00:39,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:00:39,062 INFO L85 PathProgramCache]: Analyzing trace with hash 250462582, now seen corresponding path program 1 times [2024-11-28 05:00:39,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:00:39,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62914852] [2024-11-28 05:00:39,062 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:00:39,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:00:39,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:00:39,431 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-11-28 05:00:39,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:00:39,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62914852] [2024-11-28 05:00:39,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62914852] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:00:39,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547452210] [2024-11-28 05:00:39,432 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:00:39,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:00:39,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:00:39,435 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:00:39,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-28 05:00:40,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:00:40,135 INFO L256 TraceCheckSpWp]: Trace formula consists of 2015 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 05:00:40,142 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:00:40,195 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-11-28 05:00:40,195 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:00:40,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [547452210] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:00:40,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:00:40,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-28 05:00:40,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704845558] [2024-11-28 05:00:40,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:00:40,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:00:40,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:00:40,197 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:00:40,198 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:00:40,198 INFO L87 Difference]: Start difference. First operand 28401 states and 48347 transitions. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-28 05:00:42,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:00:42,251 INFO L93 Difference]: Finished difference Result 41960 states and 71154 transitions. [2024-11-28 05:00:42,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:00:42,251 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 204 [2024-11-28 05:00:42,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:00:42,397 INFO L225 Difference]: With dead ends: 41960 [2024-11-28 05:00:42,397 INFO L226 Difference]: Without dead ends: 13660 [2024-11-28 05:00:42,569 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 203 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 05:00:42,569 INFO L435 NwaCegarLoop]: 780 mSDtfsCounter, 15 mSDsluCounter, 1537 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 2317 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 05:00:42,570 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 2317 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 05:00:42,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13660 states. [2024-11-28 05:00:43,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13660 to 13660. [2024-11-28 05:00:43,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13660 states, 10483 states have (on average 1.5876180482686253) internal successors, (16643), 11034 states have internal predecessors, (16643), 2470 states have call successors, (2470), 522 states have call predecessors, (2470), 706 states have return successors, (3826), 2455 states have call predecessors, (3826), 2466 states have call successors, (3826) [2024-11-28 05:00:44,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13660 states to 13660 states and 22939 transitions. [2024-11-28 05:00:44,027 INFO L78 Accepts]: Start accepts. Automaton has 13660 states and 22939 transitions. Word has length 204 [2024-11-28 05:00:44,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:00:44,028 INFO L471 AbstractCegarLoop]: Abstraction has 13660 states and 22939 transitions. [2024-11-28 05:00:44,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-28 05:00:44,028 INFO L276 IsEmpty]: Start isEmpty. Operand 13660 states and 22939 transitions. [2024-11-28 05:00:44,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2024-11-28 05:00:44,039 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:00:44,039 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:00:44,056 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-11-28 05:00:44,240 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2024-11-28 05:00:44,240 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:00:44,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:00:44,240 INFO L85 PathProgramCache]: Analyzing trace with hash 738832303, now seen corresponding path program 1 times [2024-11-28 05:00:44,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:00:44,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491005405] [2024-11-28 05:00:44,241 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:00:44,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:00:44,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:00:44,913 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 5 proven. 19 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-28 05:00:44,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:00:44,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491005405] [2024-11-28 05:00:44,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491005405] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:00:44,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1207201760] [2024-11-28 05:00:44,914 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:00:44,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:00:44,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:00:44,916 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:00:44,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-28 05:00:45,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:00:45,529 INFO L256 TraceCheckSpWp]: Trace formula consists of 2036 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 05:00:45,535 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:00:45,986 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 46 proven. 9 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-28 05:00:45,987 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:00:47,049 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-11-28 05:00:47,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1207201760] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:00:47,050 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:00:47,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9, 8] total 26 [2024-11-28 05:00:47,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460103732] [2024-11-28 05:00:47,050 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:00:47,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-28 05:00:47,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:00:47,053 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-28 05:00:47,053 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=566, Unknown=0, NotChecked=0, Total=650 [2024-11-28 05:00:47,054 INFO L87 Difference]: Start difference. First operand 13660 states and 22939 transitions. Second operand has 26 states, 25 states have (on average 12.16) internal successors, (304), 22 states have internal predecessors, (304), 11 states have call successors, (55), 6 states have call predecessors, (55), 15 states have return successors, (56), 14 states have call predecessors, (56), 10 states have call successors, (56) [2024-11-28 05:01:07,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:01:07,154 INFO L93 Difference]: Finished difference Result 76403 states and 131573 transitions. [2024-11-28 05:01:07,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-28 05:01:07,155 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 12.16) internal successors, (304), 22 states have internal predecessors, (304), 11 states have call successors, (55), 6 states have call predecessors, (55), 15 states have return successors, (56), 14 states have call predecessors, (56), 10 states have call successors, (56) Word has length 203 [2024-11-28 05:01:07,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:01:07,531 INFO L225 Difference]: With dead ends: 76403 [2024-11-28 05:01:07,531 INFO L226 Difference]: Without dead ends: 62865 [2024-11-28 05:01:07,617 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 472 GetRequests, 410 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 753 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=580, Invalid=3202, Unknown=0, NotChecked=0, Total=3782 [2024-11-28 05:01:07,622 INFO L435 NwaCegarLoop]: 1478 mSDtfsCounter, 7805 mSDsluCounter, 14959 mSDsCounter, 0 mSdLazyCounter, 20658 mSolverCounterSat, 2227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7873 SdHoareTripleChecker+Valid, 16437 SdHoareTripleChecker+Invalid, 22885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 2227 IncrementalHoareTripleChecker+Valid, 20658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.4s IncrementalHoareTripleChecker+Time [2024-11-28 05:01:07,622 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7873 Valid, 16437 Invalid, 22885 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [2227 Valid, 20658 Invalid, 0 Unknown, 0 Unchecked, 13.4s Time] [2024-11-28 05:01:07,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62865 states. [2024-11-28 05:01:12,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62865 to 62251. [2024-11-28 05:01:12,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62251 states, 46652 states have (on average 1.575473720312098) internal successors, (73499), 49320 states have internal predecessors, (73499), 12513 states have call successors, (12513), 2068 states have call predecessors, (12513), 3085 states have return successors, (21293), 12630 states have call predecessors, (21293), 12509 states have call successors, (21293) [2024-11-28 05:01:13,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62251 states to 62251 states and 107305 transitions. [2024-11-28 05:01:13,436 INFO L78 Accepts]: Start accepts. Automaton has 62251 states and 107305 transitions. Word has length 203 [2024-11-28 05:01:13,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:01:13,436 INFO L471 AbstractCegarLoop]: Abstraction has 62251 states and 107305 transitions. [2024-11-28 05:01:13,436 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 12.16) internal successors, (304), 22 states have internal predecessors, (304), 11 states have call successors, (55), 6 states have call predecessors, (55), 15 states have return successors, (56), 14 states have call predecessors, (56), 10 states have call successors, (56) [2024-11-28 05:01:13,437 INFO L276 IsEmpty]: Start isEmpty. Operand 62251 states and 107305 transitions. [2024-11-28 05:01:13,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2024-11-28 05:01:13,473 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:01:13,474 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:01:13,489 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2024-11-28 05:01:13,674 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2024-11-28 05:01:13,674 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:01:13,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:01:13,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1916606816, now seen corresponding path program 1 times [2024-11-28 05:01:13,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:01:13,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549122669] [2024-11-28 05:01:13,675 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:01:13,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:01:13,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:01:13,836 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 10 proven. 12 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2024-11-28 05:01:13,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:01:13,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549122669] [2024-11-28 05:01:13,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549122669] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:01:13,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [765096279] [2024-11-28 05:01:13,837 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:01:13,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:01:13,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:01:13,839 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:01:13,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd6b1ba5-6123-4183-a1cf-ccf31fa3177e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-11-28 05:01:14,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:01:14,404 INFO L256 TraceCheckSpWp]: Trace formula consists of 2014 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 05:01:14,407 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:01:14,438 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-28 05:01:14,438 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:01:14,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [765096279] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:01:14,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:01:14,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-28 05:01:14,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508534421] [2024-11-28 05:01:14,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:01:14,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:01:14,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:01:14,441 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:01:14,441 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:01:14,442 INFO L87 Difference]: Start difference. First operand 62251 states and 107305 transitions. Second operand has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20)