./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec1_product23.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec1_product23.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC --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 be08b04703653fc518e8f41dc63d028f83e90f3984633a298492c10e4ad9cfd9 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 22:35:52,515 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 22:35:52,590 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-23 22:35:52,601 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 22:35:52,601 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 22:35:52,641 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 22:35:52,642 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 22:35:52,643 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 22:35:52,643 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 22:35:52,644 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 22:35:52,644 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 22:35:52,644 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 22:35:52,645 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 22:35:52,645 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 22:35:52,645 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 22:35:52,646 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 22:35:52,646 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 22:35:52,647 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 22:35:52,647 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 22:35:52,647 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 22:35:52,647 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 22:35:52,647 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 22:35:52,647 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 22:35:52,647 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 22:35:52,647 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 22:35:52,647 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 22:35:52,647 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 22:35:52,647 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 22:35:52,647 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 22:35:52,648 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 22:35:52,648 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 22:35:52,648 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 22:35:52,648 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 22:35:52,648 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 22:35:52,648 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 22:35:52,648 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 22:35:52,648 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 22:35:52,648 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 22:35:52,648 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 22:35:52,648 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 22:35:52,648 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 22:35:52,648 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 22:35:52,649 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 22:35:52,649 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 22:35:52,650 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 22:35:52,650 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 22:35:52,650 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 22:35:52,650 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 22:35:52,651 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_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC 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 -> be08b04703653fc518e8f41dc63d028f83e90f3984633a298492c10e4ad9cfd9 [2024-11-23 22:35:52,969 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 22:35:52,983 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 22:35:52,987 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 22:35:52,988 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 22:35:52,988 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 22:35:52,989 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/product-lines/elevator_spec1_product23.cil.c [2024-11-23 22:35:56,093 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/data/32464a587/6e1ba5f941d648e29afc1ce932b833c5/FLAGde9ca8cb3 [2024-11-23 22:35:56,556 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 22:35:56,556 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/sv-benchmarks/c/product-lines/elevator_spec1_product23.cil.c [2024-11-23 22:35:56,582 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/data/32464a587/6e1ba5f941d648e29afc1ce932b833c5/FLAGde9ca8cb3 [2024-11-23 22:35:56,605 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/data/32464a587/6e1ba5f941d648e29afc1ce932b833c5 [2024-11-23 22:35:56,608 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 22:35:56,610 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 22:35:56,613 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 22:35:56,614 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 22:35:56,622 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 22:35:56,623 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:35:56" (1/1) ... [2024-11-23 22:35:56,626 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a3cd3bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:56, skipping insertion in model container [2024-11-23 22:35:56,626 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:35:56" (1/1) ... [2024-11-23 22:35:56,710 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 22:35:57,379 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_be52d641-d581-415b-98e2-a59ae01b03a0/sv-benchmarks/c/product-lines/elevator_spec1_product23.cil.c[58338,58351] [2024-11-23 22:35:57,404 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 22:35:57,416 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 22:35:57,424 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [48] [2024-11-23 22:35:57,426 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [150] [2024-11-23 22:35:57,426 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification1_spec.i","") [516] [2024-11-23 22:35:57,426 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [700] [2024-11-23 22:35:57,427 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [1055] [2024-11-23 22:35:57,427 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [1175] [2024-11-23 22:35:57,427 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [1188] [2024-11-23 22:35:57,427 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1223] [2024-11-23 22:35:57,427 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [2820] [2024-11-23 22:35:57,427 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [2829] [2024-11-23 22:35:57,580 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_be52d641-d581-415b-98e2-a59ae01b03a0/sv-benchmarks/c/product-lines/elevator_spec1_product23.cil.c[58338,58351] [2024-11-23 22:35:57,595 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 22:35:57,625 INFO L204 MainTranslator]: Completed translation [2024-11-23 22:35:57,625 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:57 WrapperNode [2024-11-23 22:35:57,626 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 22:35:57,627 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 22:35:57,627 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 22:35:57,627 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 22:35:57,633 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:57" (1/1) ... [2024-11-23 22:35:57,661 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:57" (1/1) ... [2024-11-23 22:35:57,711 INFO L138 Inliner]: procedures = 96, calls = 348, calls flagged for inlining = 26, calls inlined = 23, statements flattened = 909 [2024-11-23 22:35:57,711 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 22:35:57,711 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 22:35:57,712 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 22:35:57,712 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 22:35:57,721 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:57" (1/1) ... [2024-11-23 22:35:57,722 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:57" (1/1) ... [2024-11-23 22:35:57,728 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:57" (1/1) ... [2024-11-23 22:35:57,753 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. The 0 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. [2024-11-23 22:35:57,754 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:57" (1/1) ... [2024-11-23 22:35:57,754 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:57" (1/1) ... [2024-11-23 22:35:57,784 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:57" (1/1) ... [2024-11-23 22:35:57,786 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:57" (1/1) ... [2024-11-23 22:35:57,812 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:57" (1/1) ... [2024-11-23 22:35:57,844 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:57" (1/1) ... [2024-11-23 22:35:57,852 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:57" (1/1) ... [2024-11-23 22:35:57,866 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 22:35:57,867 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 22:35:57,867 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 22:35:57,868 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 22:35:57,869 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:57" (1/1) ... [2024-11-23 22:35:57,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 22:35:57,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:35:57,910 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 22:35:57,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 22:35:57,954 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2024-11-23 22:35:57,954 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2024-11-23 22:35:57,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 22:35:57,955 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2024-11-23 22:35:57,956 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2024-11-23 22:35:57,956 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2024-11-23 22:35:57,956 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2024-11-23 22:35:57,956 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2024-11-23 22:35:57,956 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2024-11-23 22:35:57,957 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-11-23 22:35:57,958 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-11-23 22:35:57,958 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2024-11-23 22:35:57,958 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2024-11-23 22:35:57,958 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-11-23 22:35:57,959 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-11-23 22:35:57,959 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-11-23 22:35:57,959 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-11-23 22:35:57,959 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-23 22:35:57,959 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-23 22:35:57,959 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-23 22:35:57,959 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-23 22:35:57,959 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2024-11-23 22:35:57,962 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2024-11-23 22:35:57,962 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-11-23 22:35:57,962 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-11-23 22:35:57,962 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-11-23 22:35:57,962 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-11-23 22:35:57,962 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-11-23 22:35:57,962 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-11-23 22:35:57,962 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-11-23 22:35:57,962 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-11-23 22:35:57,963 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2024-11-23 22:35:57,963 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2024-11-23 22:35:57,963 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-11-23 22:35:57,963 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-11-23 22:35:57,963 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-11-23 22:35:57,963 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-11-23 22:35:57,963 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-11-23 22:35:57,963 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-11-23 22:35:57,963 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-11-23 22:35:57,964 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-11-23 22:35:57,964 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-11-23 22:35:57,964 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-11-23 22:35:57,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 22:35:57,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-23 22:35:57,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-23 22:35:57,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-23 22:35:57,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-23 22:35:57,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-23 22:35:57,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-23 22:35:57,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-23 22:35:57,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-23 22:35:57,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-23 22:35:57,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-23 22:35:57,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-23 22:35:57,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-23 22:35:57,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-23 22:35:57,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-11-23 22:35:57,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-11-23 22:35:57,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-11-23 22:35:57,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-11-23 22:35:57,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2024-11-23 22:35:57,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2024-11-23 22:35:57,969 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2024-11-23 22:35:57,969 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2024-11-23 22:35:57,969 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-11-23 22:35:57,969 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-11-23 22:35:57,969 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-11-23 22:35:57,970 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-11-23 22:35:57,970 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-11-23 22:35:57,970 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-11-23 22:35:57,970 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2024-11-23 22:35:57,970 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2024-11-23 22:35:57,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 22:35:57,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 22:35:57,970 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-11-23 22:35:57,970 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-11-23 22:35:58,203 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 22:35:58,206 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 22:35:59,835 INFO L? ?]: Removed 471 outVars from TransFormulas that were not future-live. [2024-11-23 22:35:59,835 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 22:35:59,895 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 22:35:59,895 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-23 22:35:59,896 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:35:59 BoogieIcfgContainer [2024-11-23 22:35:59,896 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 22:35:59,898 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 22:35:59,898 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 22:35:59,903 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 22:35:59,903 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:35:56" (1/3) ... [2024-11-23 22:35:59,904 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3be8427f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:35:59, skipping insertion in model container [2024-11-23 22:35:59,904 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:57" (2/3) ... [2024-11-23 22:35:59,906 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3be8427f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:35:59, skipping insertion in model container [2024-11-23 22:35:59,906 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:35:59" (3/3) ... [2024-11-23 22:35:59,909 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product23.cil.c [2024-11-23 22:35:59,928 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 22:35:59,932 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec1_product23.cil.c that has 28 procedures, 593 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-23 22:36:00,058 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 22:36:00,080 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;@2f209f45, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 22:36:00,080 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-23 22:36:00,091 INFO L276 IsEmpty]: Start isEmpty. Operand has 593 states, 459 states have (on average 1.6753812636165577) internal successors, (769), 480 states have internal predecessors, (769), 105 states have call successors, (105), 27 states have call predecessors, (105), 27 states have return successors, (105), 99 states have call predecessors, (105), 105 states have call successors, (105) [2024-11-23 22:36:00,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-23 22:36:00,144 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:36:00,145 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:36:00,145 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:36:00,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:36:00,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1750437818, now seen corresponding path program 1 times [2024-11-23 22:36:00,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:36:00,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720047207] [2024-11-23 22:36:00,161 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:00,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:36:00,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:01,072 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-23 22:36:01,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:36:01,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720047207] [2024-11-23 22:36:01,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720047207] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:36:01,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1243731308] [2024-11-23 22:36:01,075 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:01,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:36:01,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:36:01,081 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:36:01,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 22:36:01,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:01,771 INFO L256 TraceCheckSpWp]: Trace formula consists of 1855 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-23 22:36:01,789 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:36:01,833 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-23 22:36:01,833 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:36:01,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1243731308] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:36:01,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:36:01,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 4 [2024-11-23 22:36:01,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193136389] [2024-11-23 22:36:01,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:36:01,841 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-23 22:36:01,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:36:01,867 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-23 22:36:01,868 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 22:36:01,872 INFO L87 Difference]: Start difference. First operand has 593 states, 459 states have (on average 1.6753812636165577) internal successors, (769), 480 states have internal predecessors, (769), 105 states have call successors, (105), 27 states have call predecessors, (105), 27 states have return successors, (105), 99 states have call predecessors, (105), 105 states have call successors, (105) Second operand has 2 states, 2 states have (on average 35.0) internal successors, (70), 2 states have internal predecessors, (70), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-23 22:36:02,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:36:02,004 INFO L93 Difference]: Finished difference Result 614 states and 1009 transitions. [2024-11-23 22:36:02,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-23 22:36:02,006 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 35.0) internal successors, (70), 2 states have internal predecessors, (70), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) Word has length 127 [2024-11-23 22:36:02,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:36:02,036 INFO L225 Difference]: With dead ends: 614 [2024-11-23 22:36:02,036 INFO L226 Difference]: Without dead ends: 585 [2024-11-23 22:36:02,044 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 22:36:02,049 INFO L435 NwaCegarLoop]: 970 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, 970 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 [2024-11-23 22:36:02,050 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 970 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:36:02,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2024-11-23 22:36:02,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 585. [2024-11-23 22:36:02,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 453 states have (on average 1.6732891832229582) internal successors, (758), 472 states have internal predecessors, (758), 105 states have call successors, (105), 27 states have call predecessors, (105), 26 states have return successors, (100), 98 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-23 22:36:02,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 963 transitions. [2024-11-23 22:36:02,185 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 963 transitions. Word has length 127 [2024-11-23 22:36:02,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:36:02,189 INFO L471 AbstractCegarLoop]: Abstraction has 585 states and 963 transitions. [2024-11-23 22:36:02,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 35.0) internal successors, (70), 2 states have internal predecessors, (70), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-23 22:36:02,190 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 963 transitions. [2024-11-23 22:36:02,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-23 22:36:02,203 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:36:02,204 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:36:02,216 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-23 22:36:02,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-23 22:36:02,409 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:36:02,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:36:02,410 INFO L85 PathProgramCache]: Analyzing trace with hash -6231309, now seen corresponding path program 1 times [2024-11-23 22:36:02,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:36:02,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165320477] [2024-11-23 22:36:02,410 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:02,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:36:02,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:02,753 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-23 22:36:02,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:36:02,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165320477] [2024-11-23 22:36:02,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165320477] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:36:02,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1111208081] [2024-11-23 22:36:02,753 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:02,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:36:02,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:36:02,756 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:36:02,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 22:36:03,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:03,276 INFO L256 TraceCheckSpWp]: Trace formula consists of 1857 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 22:36:03,283 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:36:03,356 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-23 22:36:03,356 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:36:03,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1111208081] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:36:03,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:36:03,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-23 22:36:03,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652021485] [2024-11-23 22:36:03,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:36:03,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 22:36:03,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:36:03,362 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 22:36:03,362 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-23 22:36:03,362 INFO L87 Difference]: Start difference. First operand 585 states and 963 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-23 22:36:03,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:36:03,517 INFO L93 Difference]: Finished difference Result 1161 states and 1918 transitions. [2024-11-23 22:36:03,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 22:36:03,518 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 128 [2024-11-23 22:36:03,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:36:03,527 INFO L225 Difference]: With dead ends: 1161 [2024-11-23 22:36:03,527 INFO L226 Difference]: Without dead ends: 585 [2024-11-23 22:36:03,536 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-23 22:36:03,537 INFO L435 NwaCegarLoop]: 951 mSDtfsCounter, 5 mSDsluCounter, 1896 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2847 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:36:03,537 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2847 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:36:03,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2024-11-23 22:36:03,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 585. [2024-11-23 22:36:03,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 453 states have (on average 1.6710816777041944) internal successors, (757), 472 states have internal predecessors, (757), 105 states have call successors, (105), 27 states have call predecessors, (105), 26 states have return successors, (100), 98 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-23 22:36:03,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 962 transitions. [2024-11-23 22:36:03,604 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 962 transitions. Word has length 128 [2024-11-23 22:36:03,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:36:03,604 INFO L471 AbstractCegarLoop]: Abstraction has 585 states and 962 transitions. [2024-11-23 22:36:03,604 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-23 22:36:03,605 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 962 transitions. [2024-11-23 22:36:03,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-23 22:36:03,617 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:36:03,617 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:36:03,633 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-23 22:36:03,817 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:36:03,818 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:36:03,818 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:36:03,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1717584633, now seen corresponding path program 1 times [2024-11-23 22:36:03,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:36:03,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977931465] [2024-11-23 22:36:03,819 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:03,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:36:03,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:04,192 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-23 22:36:04,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:36:04,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977931465] [2024-11-23 22:36:04,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977931465] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:36:04,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377252790] [2024-11-23 22:36:04,193 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:04,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:36:04,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:36:04,198 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:36:04,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-23 22:36:04,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:04,712 INFO L256 TraceCheckSpWp]: Trace formula consists of 1859 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 22:36:04,720 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:36:04,772 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-23 22:36:04,773 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:36:04,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1377252790] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:36:04,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:36:04,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-23 22:36:04,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753804704] [2024-11-23 22:36:04,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:36:04,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 22:36:04,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:36:04,774 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 22:36:04,774 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-23 22:36:04,775 INFO L87 Difference]: Start difference. First operand 585 states and 962 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-23 22:36:04,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:36:04,903 INFO L93 Difference]: Finished difference Result 1161 states and 1916 transitions. [2024-11-23 22:36:04,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 22:36:04,904 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 130 [2024-11-23 22:36:04,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:36:04,912 INFO L225 Difference]: With dead ends: 1161 [2024-11-23 22:36:04,912 INFO L226 Difference]: Without dead ends: 585 [2024-11-23 22:36:04,919 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-23 22:36:04,920 INFO L435 NwaCegarLoop]: 951 mSDtfsCounter, 4 mSDsluCounter, 1896 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2847 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 [2024-11-23 22:36:04,920 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2847 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:36:04,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2024-11-23 22:36:04,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 585. [2024-11-23 22:36:04,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 453 states have (on average 1.6688741721854305) internal successors, (756), 472 states have internal predecessors, (756), 105 states have call successors, (105), 27 states have call predecessors, (105), 26 states have return successors, (100), 98 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-23 22:36:04,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 961 transitions. [2024-11-23 22:36:04,963 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 961 transitions. Word has length 130 [2024-11-23 22:36:04,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:36:04,963 INFO L471 AbstractCegarLoop]: Abstraction has 585 states and 961 transitions. [2024-11-23 22:36:04,964 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-23 22:36:04,964 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 961 transitions. [2024-11-23 22:36:04,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-11-23 22:36:04,969 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:36:04,969 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:36:04,984 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-23 22:36:05,172 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:36:05,173 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:36:05,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:36:05,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1394649139, now seen corresponding path program 1 times [2024-11-23 22:36:05,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:36:05,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027985977] [2024-11-23 22:36:05,173 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:05,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:36:05,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:05,449 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-23 22:36:05,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:36:05,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027985977] [2024-11-23 22:36:05,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027985977] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:36:05,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662943797] [2024-11-23 22:36:05,450 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:05,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:36:05,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:36:05,453 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:36:05,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-23 22:36:05,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:05,965 INFO L256 TraceCheckSpWp]: Trace formula consists of 1861 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 22:36:05,972 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:36:06,011 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-23 22:36:06,011 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:36:06,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1662943797] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:36:06,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:36:06,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-23 22:36:06,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691964316] [2024-11-23 22:36:06,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:36:06,013 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 22:36:06,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:36:06,013 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 22:36:06,014 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-23 22:36:06,014 INFO L87 Difference]: Start difference. First operand 585 states and 961 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-23 22:36:06,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:36:06,125 INFO L93 Difference]: Finished difference Result 1168 states and 1923 transitions. [2024-11-23 22:36:06,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 22:36:06,126 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 132 [2024-11-23 22:36:06,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:36:06,131 INFO L225 Difference]: With dead ends: 1168 [2024-11-23 22:36:06,132 INFO L226 Difference]: Without dead ends: 594 [2024-11-23 22:36:06,135 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-23 22:36:06,135 INFO L435 NwaCegarLoop]: 950 mSDtfsCounter, 13 mSDsluCounter, 1894 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2844 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:36:06,136 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2844 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:36:06,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2024-11-23 22:36:06,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 594. [2024-11-23 22:36:06,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 594 states, 461 states have (on average 1.665943600867679) internal successors, (768), 480 states have internal predecessors, (768), 105 states have call successors, (105), 28 states have call predecessors, (105), 27 states have return successors, (100), 98 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-23 22:36:06,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 973 transitions. [2024-11-23 22:36:06,165 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 973 transitions. Word has length 132 [2024-11-23 22:36:06,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:36:06,165 INFO L471 AbstractCegarLoop]: Abstraction has 594 states and 973 transitions. [2024-11-23 22:36:06,165 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-23 22:36:06,165 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 973 transitions. [2024-11-23 22:36:06,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-11-23 22:36:06,170 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:36:06,170 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:36:06,181 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-23 22:36:06,371 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:36:06,372 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:36:06,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:36:06,372 INFO L85 PathProgramCache]: Analyzing trace with hash 849234167, now seen corresponding path program 1 times [2024-11-23 22:36:06,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:36:06,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688012644] [2024-11-23 22:36:06,372 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:06,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:36:06,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:06,599 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-23 22:36:06,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:36:06,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688012644] [2024-11-23 22:36:06,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688012644] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:36:06,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2129367901] [2024-11-23 22:36:06,601 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:06,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:36:06,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:36:06,603 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:36:06,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-23 22:36:07,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:07,039 INFO L256 TraceCheckSpWp]: Trace formula consists of 1862 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 22:36:07,045 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:36:07,094 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-23 22:36:07,094 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:36:07,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2129367901] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:36:07,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:36:07,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-23 22:36:07,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416078042] [2024-11-23 22:36:07,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:36:07,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 22:36:07,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:36:07,099 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 22:36:07,099 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-23 22:36:07,099 INFO L87 Difference]: Start difference. First operand 594 states and 973 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-23 22:36:07,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:36:07,234 INFO L93 Difference]: Finished difference Result 1170 states and 1924 transitions. [2024-11-23 22:36:07,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 22:36:07,234 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 133 [2024-11-23 22:36:07,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:36:07,241 INFO L225 Difference]: With dead ends: 1170 [2024-11-23 22:36:07,241 INFO L226 Difference]: Without dead ends: 594 [2024-11-23 22:36:07,245 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-23 22:36:07,247 INFO L435 NwaCegarLoop]: 950 mSDtfsCounter, 11 mSDsluCounter, 1894 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2844 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 [2024-11-23 22:36:07,248 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2844 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 22:36:07,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2024-11-23 22:36:07,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 594. [2024-11-23 22:36:07,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 594 states, 461 states have (on average 1.6637744034707158) internal successors, (767), 480 states have internal predecessors, (767), 105 states have call successors, (105), 28 states have call predecessors, (105), 27 states have return successors, (100), 98 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-23 22:36:07,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 972 transitions. [2024-11-23 22:36:07,287 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 972 transitions. Word has length 133 [2024-11-23 22:36:07,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:36:07,288 INFO L471 AbstractCegarLoop]: Abstraction has 594 states and 972 transitions. [2024-11-23 22:36:07,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-23 22:36:07,288 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 972 transitions. [2024-11-23 22:36:07,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-23 22:36:07,294 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:36:07,294 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:36:07,308 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-23 22:36:07,494 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:36:07,495 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:36:07,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:36:07,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1731255087, now seen corresponding path program 1 times [2024-11-23 22:36:07,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:36:07,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724892815] [2024-11-23 22:36:07,497 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:07,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:36:07,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:07,686 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-23 22:36:07,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:36:07,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724892815] [2024-11-23 22:36:07,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724892815] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:36:07,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [832286679] [2024-11-23 22:36:07,687 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:07,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:36:07,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:36:07,689 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:36:07,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-23 22:36:08,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:08,146 INFO L256 TraceCheckSpWp]: Trace formula consists of 1863 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 22:36:08,151 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:36:08,191 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-23 22:36:08,191 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:36:08,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [832286679] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:36:08,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:36:08,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-23 22:36:08,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947040276] [2024-11-23 22:36:08,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:36:08,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 22:36:08,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:36:08,194 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 22:36:08,194 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-23 22:36:08,195 INFO L87 Difference]: Start difference. First operand 594 states and 972 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, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-23 22:36:08,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:36:08,283 INFO L93 Difference]: Finished difference Result 1170 states and 1923 transitions. [2024-11-23 22:36:08,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 22:36:08,284 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, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 134 [2024-11-23 22:36:08,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:36:08,291 INFO L225 Difference]: With dead ends: 1170 [2024-11-23 22:36:08,291 INFO L226 Difference]: Without dead ends: 594 [2024-11-23 22:36:08,294 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-23 22:36:08,295 INFO L435 NwaCegarLoop]: 950 mSDtfsCounter, 10 mSDsluCounter, 1894 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2844 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:36:08,297 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2844 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:36:08,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2024-11-23 22:36:08,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 594. [2024-11-23 22:36:08,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 594 states, 461 states have (on average 1.6616052060737527) internal successors, (766), 480 states have internal predecessors, (766), 105 states have call successors, (105), 28 states have call predecessors, (105), 27 states have return successors, (100), 98 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-23 22:36:08,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 971 transitions. [2024-11-23 22:36:08,327 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 971 transitions. Word has length 134 [2024-11-23 22:36:08,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:36:08,328 INFO L471 AbstractCegarLoop]: Abstraction has 594 states and 971 transitions. [2024-11-23 22:36:08,328 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, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-23 22:36:08,328 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 971 transitions. [2024-11-23 22:36:08,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-11-23 22:36:08,332 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:36:08,332 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:36:08,343 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-23 22:36:08,533 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:36:08,533 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:36:08,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:36:08,534 INFO L85 PathProgramCache]: Analyzing trace with hash -380851597, now seen corresponding path program 1 times [2024-11-23 22:36:08,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:36:08,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938755042] [2024-11-23 22:36:08,534 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:08,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:36:08,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:08,867 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-23 22:36:08,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:36:08,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938755042] [2024-11-23 22:36:08,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938755042] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:36:08,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26876559] [2024-11-23 22:36:08,868 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:08,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:36:08,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:36:08,870 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:36:08,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-23 22:36:09,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:09,328 INFO L256 TraceCheckSpWp]: Trace formula consists of 1864 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 22:36:09,332 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:36:09,378 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-23 22:36:09,378 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:36:09,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [26876559] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:36:09,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:36:09,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2024-11-23 22:36:09,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643110479] [2024-11-23 22:36:09,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:36:09,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 22:36:09,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:36:09,380 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 22:36:09,380 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-23 22:36:09,380 INFO L87 Difference]: Start difference. First operand 594 states and 971 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-23 22:36:09,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:36:09,577 INFO L93 Difference]: Finished difference Result 1196 states and 1970 transitions. [2024-11-23 22:36:09,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 22:36:09,578 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 135 [2024-11-23 22:36:09,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:36:09,585 INFO L225 Difference]: With dead ends: 1196 [2024-11-23 22:36:09,585 INFO L226 Difference]: Without dead ends: 609 [2024-11-23 22:36:09,589 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-23 22:36:09,590 INFO L435 NwaCegarLoop]: 925 mSDtfsCounter, 76 mSDsluCounter, 1810 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 2735 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 22:36:09,590 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 2735 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 22:36:09,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2024-11-23 22:36:09,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 594. [2024-11-23 22:36:09,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 594 states, 461 states have (on average 1.650759219088937) internal successors, (761), 480 states have internal predecessors, (761), 105 states have call successors, (105), 28 states have call predecessors, (105), 27 states have return successors, (100), 98 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-23 22:36:09,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 966 transitions. [2024-11-23 22:36:09,626 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 966 transitions. Word has length 135 [2024-11-23 22:36:09,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:36:09,626 INFO L471 AbstractCegarLoop]: Abstraction has 594 states and 966 transitions. [2024-11-23 22:36:09,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-23 22:36:09,627 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 966 transitions. [2024-11-23 22:36:09,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-11-23 22:36:09,632 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:36:09,632 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:36:09,645 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-23 22:36:09,832 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:36:09,833 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:36:09,833 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:36:09,833 INFO L85 PathProgramCache]: Analyzing trace with hash -476025687, now seen corresponding path program 1 times [2024-11-23 22:36:09,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:36:09,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830788469] [2024-11-23 22:36:09,834 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:09,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:36:09,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:10,180 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-23 22:36:10,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:36:10,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830788469] [2024-11-23 22:36:10,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830788469] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:36:10,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396398512] [2024-11-23 22:36:10,181 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:10,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:36:10,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:36:10,183 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:36:10,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-23 22:36:10,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:10,604 INFO L256 TraceCheckSpWp]: Trace formula consists of 1866 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 22:36:10,609 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:36:10,660 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-23 22:36:10,664 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:36:10,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [396398512] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:36:10,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:36:10,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2024-11-23 22:36:10,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917541584] [2024-11-23 22:36:10,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:36:10,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 22:36:10,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:36:10,667 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 22:36:10,667 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-23 22:36:10,668 INFO L87 Difference]: Start difference. First operand 594 states and 966 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-23 22:36:10,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:36:10,853 INFO L93 Difference]: Finished difference Result 1196 states and 1960 transitions. [2024-11-23 22:36:10,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 22:36:10,854 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 137 [2024-11-23 22:36:10,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:36:10,861 INFO L225 Difference]: With dead ends: 1196 [2024-11-23 22:36:10,861 INFO L226 Difference]: Without dead ends: 609 [2024-11-23 22:36:10,864 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-23 22:36:10,865 INFO L435 NwaCegarLoop]: 925 mSDtfsCounter, 75 mSDsluCounter, 1810 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 2735 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 22:36:10,865 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 2735 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 22:36:10,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2024-11-23 22:36:10,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 594. [2024-11-23 22:36:10,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 594 states, 461 states have (on average 1.6399132321041214) internal successors, (756), 480 states have internal predecessors, (756), 105 states have call successors, (105), 28 states have call predecessors, (105), 27 states have return successors, (100), 98 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-23 22:36:10,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 961 transitions. [2024-11-23 22:36:10,894 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 961 transitions. Word has length 137 [2024-11-23 22:36:10,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:36:10,894 INFO L471 AbstractCegarLoop]: Abstraction has 594 states and 961 transitions. [2024-11-23 22:36:10,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-23 22:36:10,894 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 961 transitions. [2024-11-23 22:36:10,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-23 22:36:10,898 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:36:10,899 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:36:10,910 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-23 22:36:11,099 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-23 22:36:11,100 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:36:11,100 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:36:11,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1042768211, now seen corresponding path program 1 times [2024-11-23 22:36:11,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:36:11,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344913666] [2024-11-23 22:36:11,100 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:11,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:36:11,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:11,420 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-23 22:36:11,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:36:11,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344913666] [2024-11-23 22:36:11,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344913666] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:36:11,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802993379] [2024-11-23 22:36:11,421 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:11,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:36:11,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:36:11,426 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:36:11,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-23 22:36:11,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:11,845 INFO L256 TraceCheckSpWp]: Trace formula consists of 1868 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 22:36:11,879 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:36:11,939 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-23 22:36:11,939 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:36:11,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [802993379] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:36:11,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:36:11,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2024-11-23 22:36:11,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581593614] [2024-11-23 22:36:11,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:36:11,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 22:36:11,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:36:11,942 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 22:36:11,942 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-23 22:36:11,942 INFO L87 Difference]: Start difference. First operand 594 states and 961 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-23 22:36:12,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:36:12,192 INFO L93 Difference]: Finished difference Result 1247 states and 2033 transitions. [2024-11-23 22:36:12,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 22:36:12,193 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 139 [2024-11-23 22:36:12,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:36:12,199 INFO L225 Difference]: With dead ends: 1247 [2024-11-23 22:36:12,199 INFO L226 Difference]: Without dead ends: 675 [2024-11-23 22:36:12,202 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-11-23 22:36:12,204 INFO L435 NwaCegarLoop]: 958 mSDtfsCounter, 130 mSDsluCounter, 1808 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 2766 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 22:36:12,205 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 2766 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 22:36:12,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2024-11-23 22:36:12,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 645. [2024-11-23 22:36:12,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 511 states have (on average 1.6457925636007829) internal successors, (841), 530 states have internal predecessors, (841), 105 states have call successors, (105), 29 states have call predecessors, (105), 28 states have return successors, (100), 98 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-23 22:36:12,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 1046 transitions. [2024-11-23 22:36:12,236 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 1046 transitions. Word has length 139 [2024-11-23 22:36:12,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:36:12,237 INFO L471 AbstractCegarLoop]: Abstraction has 645 states and 1046 transitions. [2024-11-23 22:36:12,237 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-23 22:36:12,237 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 1046 transitions. [2024-11-23 22:36:12,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-23 22:36:12,242 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:36:12,242 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:36:12,254 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-23 22:36:12,442 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-23 22:36:12,443 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:36:12,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:36:12,443 INFO L85 PathProgramCache]: Analyzing trace with hash -191855406, now seen corresponding path program 1 times [2024-11-23 22:36:12,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:36:12,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111711507] [2024-11-23 22:36:12,443 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:12,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:36:12,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:12,757 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-23 22:36:12,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:36:12,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111711507] [2024-11-23 22:36:12,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111711507] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:36:12,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883184748] [2024-11-23 22:36:12,758 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:12,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:36:12,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:36:12,760 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:36:12,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-23 22:36:13,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:13,227 INFO L256 TraceCheckSpWp]: Trace formula consists of 1869 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 22:36:13,232 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:36:13,285 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-23 22:36:13,285 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:36:13,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [883184748] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:36:13,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:36:13,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2024-11-23 22:36:13,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833384260] [2024-11-23 22:36:13,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:36:13,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 22:36:13,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:36:13,287 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 22:36:13,287 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-23 22:36:13,287 INFO L87 Difference]: Start difference. First operand 645 states and 1046 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-23 22:36:13,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:36:13,537 INFO L93 Difference]: Finished difference Result 1262 states and 2057 transitions. [2024-11-23 22:36:13,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 22:36:13,537 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 140 [2024-11-23 22:36:13,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:36:13,543 INFO L225 Difference]: With dead ends: 1262 [2024-11-23 22:36:13,544 INFO L226 Difference]: Without dead ends: 675 [2024-11-23 22:36:13,547 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-11-23 22:36:13,547 INFO L435 NwaCegarLoop]: 957 mSDtfsCounter, 124 mSDsluCounter, 1782 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 2739 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 [2024-11-23 22:36:13,548 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 2739 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 22:36:13,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2024-11-23 22:36:13,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 645. [2024-11-23 22:36:13,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 511 states have (on average 1.6360078277886496) internal successors, (836), 530 states have internal predecessors, (836), 105 states have call successors, (105), 29 states have call predecessors, (105), 28 states have return successors, (100), 98 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-23 22:36:13,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 1041 transitions. [2024-11-23 22:36:13,586 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 1041 transitions. Word has length 140 [2024-11-23 22:36:13,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:36:13,586 INFO L471 AbstractCegarLoop]: Abstraction has 645 states and 1041 transitions. [2024-11-23 22:36:13,586 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-23 22:36:13,587 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 1041 transitions. [2024-11-23 22:36:13,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-23 22:36:13,590 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:36:13,591 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 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] [2024-11-23 22:36:13,602 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-23 22:36:13,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-23 22:36:13,792 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:36:13,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:36:13,792 INFO L85 PathProgramCache]: Analyzing trace with hash 121563827, now seen corresponding path program 1 times [2024-11-23 22:36:13,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:36:13,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711354014] [2024-11-23 22:36:13,793 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:13,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:36:13,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:14,015 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-23 22:36:14,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:36:14,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711354014] [2024-11-23 22:36:14,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711354014] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:36:14,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [482954361] [2024-11-23 22:36:14,016 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:14,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:36:14,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:36:14,018 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:36:14,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-23 22:36:14,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:14,454 INFO L256 TraceCheckSpWp]: Trace formula consists of 1865 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-23 22:36:14,459 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:36:14,562 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-23 22:36:14,562 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:36:14,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [482954361] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:36:14,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:36:14,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2024-11-23 22:36:14,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349085989] [2024-11-23 22:36:14,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:36:14,563 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 22:36:14,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:36:14,564 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 22:36:14,564 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-11-23 22:36:14,564 INFO L87 Difference]: Start difference. First operand 645 states and 1041 transitions. Second operand has 8 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-23 22:36:14,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:36:14,780 INFO L93 Difference]: Finished difference Result 1255 states and 2037 transitions. [2024-11-23 22:36:14,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 22:36:14,781 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 140 [2024-11-23 22:36:14,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:36:14,788 INFO L225 Difference]: With dead ends: 1255 [2024-11-23 22:36:14,788 INFO L226 Difference]: Without dead ends: 683 [2024-11-23 22:36:14,792 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-11-23 22:36:14,792 INFO L435 NwaCegarLoop]: 931 mSDtfsCounter, 113 mSDsluCounter, 5497 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 6428 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 22:36:14,793 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 6428 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 22:36:14,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2024-11-23 22:36:14,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 664. [2024-11-23 22:36:14,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 527 states have (on average 1.635673624288425) internal successors, (862), 548 states have internal predecessors, (862), 106 states have call successors, (106), 29 states have call predecessors, (106), 30 states have return successors, (103), 99 states have call predecessors, (103), 101 states have call successors, (103) [2024-11-23 22:36:14,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 1071 transitions. [2024-11-23 22:36:14,827 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 1071 transitions. Word has length 140 [2024-11-23 22:36:14,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:36:14,828 INFO L471 AbstractCegarLoop]: Abstraction has 664 states and 1071 transitions. [2024-11-23 22:36:14,829 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-23 22:36:14,829 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 1071 transitions. [2024-11-23 22:36:14,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-23 22:36:14,833 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:36:14,833 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 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] [2024-11-23 22:36:14,845 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-23 22:36:15,037 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-23 22:36:15,037 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:36:15,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:36:15,038 INFO L85 PathProgramCache]: Analyzing trace with hash 552480628, now seen corresponding path program 1 times [2024-11-23 22:36:15,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:36:15,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134183876] [2024-11-23 22:36:15,038 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:15,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:36:15,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:15,155 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-23 22:36:15,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:36:15,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134183876] [2024-11-23 22:36:15,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134183876] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:36:15,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [450430400] [2024-11-23 22:36:15,155 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:15,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:36:15,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:36:15,160 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:36:15,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-23 22:36:15,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:15,608 INFO L256 TraceCheckSpWp]: Trace formula consists of 1864 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-23 22:36:15,613 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:36:15,692 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-23 22:36:15,693 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:36:15,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [450430400] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:36:15,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:36:15,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2024-11-23 22:36:15,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247658344] [2024-11-23 22:36:15,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:36:15,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 22:36:15,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:36:15,694 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 22:36:15,694 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-23 22:36:15,695 INFO L87 Difference]: Start difference. First operand 664 states and 1071 transitions. Second operand has 7 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-23 22:36:15,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:36:15,818 INFO L93 Difference]: Finished difference Result 1193 states and 1937 transitions. [2024-11-23 22:36:15,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 22:36:15,819 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 140 [2024-11-23 22:36:15,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:36:15,825 INFO L225 Difference]: With dead ends: 1193 [2024-11-23 22:36:15,825 INFO L226 Difference]: Without dead ends: 688 [2024-11-23 22:36:15,828 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-23 22:36:15,829 INFO L435 NwaCegarLoop]: 944 mSDtfsCounter, 86 mSDsluCounter, 4641 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 5585 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 [2024-11-23 22:36:15,829 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 5585 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 22:36:15,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2024-11-23 22:36:15,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 683. [2024-11-23 22:36:15,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 543 states have (on average 1.6353591160220995) internal successors, (888), 566 states have internal predecessors, (888), 107 states have call successors, (107), 29 states have call predecessors, (107), 32 states have return successors, (106), 100 states have call predecessors, (106), 102 states have call successors, (106) [2024-11-23 22:36:15,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 1101 transitions. [2024-11-23 22:36:15,863 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 1101 transitions. Word has length 140 [2024-11-23 22:36:15,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:36:15,864 INFO L471 AbstractCegarLoop]: Abstraction has 683 states and 1101 transitions. [2024-11-23 22:36:15,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-23 22:36:15,866 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 1101 transitions. [2024-11-23 22:36:15,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-23 22:36:15,870 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:36:15,870 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:36:15,881 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-23 22:36:16,070 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-23 22:36:16,071 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:36:16,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:36:16,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1453555324, now seen corresponding path program 1 times [2024-11-23 22:36:16,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:36:16,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214931180] [2024-11-23 22:36:16,071 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:16,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:36:16,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:16,192 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-23 22:36:16,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:36:16,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214931180] [2024-11-23 22:36:16,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214931180] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:36:16,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [682671249] [2024-11-23 22:36:16,193 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:16,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:36:16,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:36:16,195 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:36:16,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-23 22:36:16,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:16,625 INFO L256 TraceCheckSpWp]: Trace formula consists of 1865 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-23 22:36:16,649 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:36:16,730 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-23 22:36:16,730 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:36:16,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [682671249] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:36:16,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:36:16,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2024-11-23 22:36:16,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627933631] [2024-11-23 22:36:16,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:36:16,732 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 22:36:16,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:36:16,733 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 22:36:16,733 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-23 22:36:16,733 INFO L87 Difference]: Start difference. First operand 683 states and 1101 transitions. Second operand has 7 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-23 22:36:16,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:36:16,861 INFO L93 Difference]: Finished difference Result 1223 states and 1988 transitions. [2024-11-23 22:36:16,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 22:36:16,861 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 141 [2024-11-23 22:36:16,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:36:16,868 INFO L225 Difference]: With dead ends: 1223 [2024-11-23 22:36:16,869 INFO L226 Difference]: Without dead ends: 718 [2024-11-23 22:36:16,872 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-23 22:36:16,873 INFO L435 NwaCegarLoop]: 944 mSDtfsCounter, 95 mSDsluCounter, 4631 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 5575 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 [2024-11-23 22:36:16,873 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 5575 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 22:36:16,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2024-11-23 22:36:16,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 683. [2024-11-23 22:36:16,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 543 states have (on average 1.6353591160220995) internal successors, (888), 566 states have internal predecessors, (888), 107 states have call successors, (107), 29 states have call predecessors, (107), 32 states have return successors, (106), 100 states have call predecessors, (106), 102 states have call successors, (106) [2024-11-23 22:36:16,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 1101 transitions. [2024-11-23 22:36:16,906 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 1101 transitions. Word has length 141 [2024-11-23 22:36:16,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:36:16,907 INFO L471 AbstractCegarLoop]: Abstraction has 683 states and 1101 transitions. [2024-11-23 22:36:16,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-23 22:36:16,907 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 1101 transitions. [2024-11-23 22:36:16,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-23 22:36:16,911 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:36:16,911 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:36:16,923 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-23 22:36:17,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-23 22:36:17,112 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:36:17,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:36:17,112 INFO L85 PathProgramCache]: Analyzing trace with hash -2050788868, now seen corresponding path program 1 times [2024-11-23 22:36:17,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:36:17,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457269136] [2024-11-23 22:36:17,112 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:17,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:36:17,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:17,226 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-23 22:36:17,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:36:17,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457269136] [2024-11-23 22:36:17,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457269136] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:36:17,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73089692] [2024-11-23 22:36:17,227 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:17,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:36:17,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:36:17,229 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:36:17,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-23 22:36:17,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:17,643 INFO L256 TraceCheckSpWp]: Trace formula consists of 1861 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-23 22:36:17,648 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:36:17,737 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-23 22:36:17,738 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:36:17,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [73089692] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:36:17,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:36:17,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2024-11-23 22:36:17,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098969680] [2024-11-23 22:36:17,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:36:17,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 22:36:17,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:36:17,739 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 22:36:17,739 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-23 22:36:17,739 INFO L87 Difference]: Start difference. First operand 683 states and 1101 transitions. Second operand has 8 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-23 22:36:17,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:36:17,941 INFO L93 Difference]: Finished difference Result 1208 states and 1962 transitions. [2024-11-23 22:36:17,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 22:36:17,942 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 141 [2024-11-23 22:36:17,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:36:17,948 INFO L225 Difference]: With dead ends: 1208 [2024-11-23 22:36:17,948 INFO L226 Difference]: Without dead ends: 703 [2024-11-23 22:36:17,951 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-23 22:36:17,952 INFO L435 NwaCegarLoop]: 933 mSDtfsCounter, 113 mSDsluCounter, 5503 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 6436 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 22:36:17,952 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 6436 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 22:36:17,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2024-11-23 22:36:17,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 683. [2024-11-23 22:36:17,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 543 states have (on average 1.6353591160220995) internal successors, (888), 566 states have internal predecessors, (888), 107 states have call successors, (107), 29 states have call predecessors, (107), 32 states have return successors, (106), 100 states have call predecessors, (106), 102 states have call successors, (106) [2024-11-23 22:36:17,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 1101 transitions. [2024-11-23 22:36:17,982 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 1101 transitions. Word has length 141 [2024-11-23 22:36:17,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:36:17,982 INFO L471 AbstractCegarLoop]: Abstraction has 683 states and 1101 transitions. [2024-11-23 22:36:17,982 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-23 22:36:17,983 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 1101 transitions. [2024-11-23 22:36:17,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-23 22:36:17,986 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:36:17,987 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:36:17,998 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-23 22:36:18,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-23 22:36:18,188 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:36:18,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:36:18,188 INFO L85 PathProgramCache]: Analyzing trace with hash -153583238, now seen corresponding path program 1 times [2024-11-23 22:36:18,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:36:18,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225224948] [2024-11-23 22:36:18,189 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:18,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:36:18,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:18,303 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-23 22:36:18,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:36:18,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225224948] [2024-11-23 22:36:18,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225224948] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:36:18,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516400419] [2024-11-23 22:36:18,304 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:18,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:36:18,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:36:18,306 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:36:18,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-23 22:36:18,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:18,726 INFO L256 TraceCheckSpWp]: Trace formula consists of 1865 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 22:36:18,731 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:36:18,766 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-23 22:36:18,766 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:36:18,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [516400419] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:36:18,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:36:18,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-23 22:36:18,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008609800] [2024-11-23 22:36:18,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:36:18,767 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 22:36:18,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:36:18,768 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 22:36:18,768 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-23 22:36:18,768 INFO L87 Difference]: Start difference. First operand 683 states and 1101 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-23 22:36:18,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:36:18,839 INFO L93 Difference]: Finished difference Result 1260 states and 2047 transitions. [2024-11-23 22:36:18,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 22:36:18,840 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 141 [2024-11-23 22:36:18,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:36:18,845 INFO L225 Difference]: With dead ends: 1260 [2024-11-23 22:36:18,846 INFO L226 Difference]: Without dead ends: 683 [2024-11-23 22:36:18,850 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-23 22:36:18,850 INFO L435 NwaCegarLoop]: 939 mSDtfsCounter, 13 mSDsluCounter, 1874 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2813 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 [2024-11-23 22:36:18,851 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2813 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:36:18,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2024-11-23 22:36:18,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 683. [2024-11-23 22:36:18,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 543 states have (on average 1.6279926335174955) internal successors, (884), 566 states have internal predecessors, (884), 107 states have call successors, (107), 29 states have call predecessors, (107), 32 states have return successors, (106), 100 states have call predecessors, (106), 102 states have call successors, (106) [2024-11-23 22:36:18,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 1097 transitions. [2024-11-23 22:36:18,880 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 1097 transitions. Word has length 141 [2024-11-23 22:36:18,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:36:18,881 INFO L471 AbstractCegarLoop]: Abstraction has 683 states and 1097 transitions. [2024-11-23 22:36:18,881 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-23 22:36:18,881 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 1097 transitions. [2024-11-23 22:36:18,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-11-23 22:36:18,886 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:36:18,886 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:36:18,897 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-23 22:36:19,086 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-23 22:36:19,088 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:36:19,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:36:19,088 INFO L85 PathProgramCache]: Analyzing trace with hash -480386468, now seen corresponding path program 1 times [2024-11-23 22:36:19,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:36:19,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540043236] [2024-11-23 22:36:19,089 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:19,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:36:19,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:19,211 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-23 22:36:19,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:36:19,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540043236] [2024-11-23 22:36:19,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540043236] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:36:19,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262769334] [2024-11-23 22:36:19,212 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:19,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:36:19,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:36:19,214 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:36:19,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-23 22:36:19,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:19,629 INFO L256 TraceCheckSpWp]: Trace formula consists of 1862 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 22:36:19,634 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:36:19,666 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-23 22:36:19,668 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:36:19,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [262769334] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:36:19,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:36:19,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-23 22:36:19,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812948601] [2024-11-23 22:36:19,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:36:19,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 22:36:19,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:36:19,669 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 22:36:19,671 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 22:36:19,671 INFO L87 Difference]: Start difference. First operand 683 states and 1097 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, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-23 22:36:19,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:36:19,742 INFO L93 Difference]: Finished difference Result 1304 states and 2115 transitions. [2024-11-23 22:36:19,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 22:36:19,743 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, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 142 [2024-11-23 22:36:19,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:36:19,749 INFO L225 Difference]: With dead ends: 1304 [2024-11-23 22:36:19,749 INFO L226 Difference]: Without dead ends: 707 [2024-11-23 22:36:19,752 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 22:36:19,754 INFO L435 NwaCegarLoop]: 933 mSDtfsCounter, 7 mSDsluCounter, 1853 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2786 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 [2024-11-23 22:36:19,754 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2786 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:36:19,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2024-11-23 22:36:19,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 707. [2024-11-23 22:36:19,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 707 states, 567 states have (on average 1.6084656084656084) internal successors, (912), 590 states have internal predecessors, (912), 107 states have call successors, (107), 29 states have call predecessors, (107), 32 states have return successors, (106), 100 states have call predecessors, (106), 102 states have call successors, (106) [2024-11-23 22:36:19,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 707 states to 707 states and 1125 transitions. [2024-11-23 22:36:19,785 INFO L78 Accepts]: Start accepts. Automaton has 707 states and 1125 transitions. Word has length 142 [2024-11-23 22:36:19,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:36:19,786 INFO L471 AbstractCegarLoop]: Abstraction has 707 states and 1125 transitions. [2024-11-23 22:36:19,786 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, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-23 22:36:19,786 INFO L276 IsEmpty]: Start isEmpty. Operand 707 states and 1125 transitions. [2024-11-23 22:36:19,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-23 22:36:19,791 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:36:19,791 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:36:19,802 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-23 22:36:19,991 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-23 22:36:19,992 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:36:19,992 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:36:19,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1735778822, now seen corresponding path program 1 times [2024-11-23 22:36:19,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:36:19,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946520825] [2024-11-23 22:36:19,993 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:19,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:36:20,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:20,102 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-23 22:36:20,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:36:20,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946520825] [2024-11-23 22:36:20,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946520825] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:36:20,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1978338300] [2024-11-23 22:36:20,102 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:20,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:36:20,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:36:20,105 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:36:20,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-23 22:36:20,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:20,506 INFO L256 TraceCheckSpWp]: Trace formula consists of 1863 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-23 22:36:20,511 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:36:20,602 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-23 22:36:20,603 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:36:20,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1978338300] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:36:20,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:36:20,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2024-11-23 22:36:20,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880382211] [2024-11-23 22:36:20,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:36:20,604 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 22:36:20,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:36:20,604 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 22:36:20,605 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-23 22:36:20,605 INFO L87 Difference]: Start difference. First operand 707 states and 1125 transitions. Second operand has 8 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-23 22:36:20,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:36:20,794 INFO L93 Difference]: Finished difference Result 1238 states and 1994 transitions. [2024-11-23 22:36:20,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 22:36:20,795 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 143 [2024-11-23 22:36:20,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:36:20,802 INFO L225 Difference]: With dead ends: 1238 [2024-11-23 22:36:20,803 INFO L226 Difference]: Without dead ends: 733 [2024-11-23 22:36:20,806 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-23 22:36:20,807 INFO L435 NwaCegarLoop]: 927 mSDtfsCounter, 119 mSDsluCounter, 5465 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 6392 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 22:36:20,807 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 6392 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 22:36:20,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2024-11-23 22:36:20,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 707. [2024-11-23 22:36:20,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 707 states, 567 states have (on average 1.6084656084656084) internal successors, (912), 590 states have internal predecessors, (912), 107 states have call successors, (107), 29 states have call predecessors, (107), 32 states have return successors, (106), 100 states have call predecessors, (106), 102 states have call successors, (106) [2024-11-23 22:36:20,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 707 states to 707 states and 1125 transitions. [2024-11-23 22:36:20,846 INFO L78 Accepts]: Start accepts. Automaton has 707 states and 1125 transitions. Word has length 143 [2024-11-23 22:36:20,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:36:20,846 INFO L471 AbstractCegarLoop]: Abstraction has 707 states and 1125 transitions. [2024-11-23 22:36:20,846 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-23 22:36:20,846 INFO L276 IsEmpty]: Start isEmpty. Operand 707 states and 1125 transitions. [2024-11-23 22:36:20,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-23 22:36:20,851 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:36:20,852 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:36:20,863 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-23 22:36:21,052 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-23 22:36:21,053 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:36:21,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:36:21,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1392222913, now seen corresponding path program 1 times [2024-11-23 22:36:21,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:36:21,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964576212] [2024-11-23 22:36:21,054 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:21,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:36:21,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:21,163 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-23 22:36:21,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:36:21,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964576212] [2024-11-23 22:36:21,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964576212] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:36:21,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241883705] [2024-11-23 22:36:21,164 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:21,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:36:21,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:36:21,166 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:36:21,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-23 22:36:21,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:21,563 INFO L256 TraceCheckSpWp]: Trace formula consists of 1866 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-23 22:36:21,568 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:36:21,710 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-23 22:36:21,711 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:36:21,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1241883705] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:36:21,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:36:21,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-11-23 22:36:21,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683959749] [2024-11-23 22:36:21,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:36:21,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 22:36:21,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:36:21,712 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 22:36:21,712 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-23 22:36:21,712 INFO L87 Difference]: Start difference. First operand 707 states and 1125 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-23 22:36:22,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:36:22,397 INFO L93 Difference]: Finished difference Result 1215 states and 1984 transitions. [2024-11-23 22:36:22,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 22:36:22,397 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 143 [2024-11-23 22:36:22,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:36:22,403 INFO L225 Difference]: With dead ends: 1215 [2024-11-23 22:36:22,403 INFO L226 Difference]: Without dead ends: 715 [2024-11-23 22:36:22,406 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-23 22:36:22,407 INFO L435 NwaCegarLoop]: 931 mSDtfsCounter, 901 mSDsluCounter, 1458 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 905 SdHoareTripleChecker+Valid, 2389 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-23 22:36:22,407 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [905 Valid, 2389 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 466 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-23 22:36:22,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715 states. [2024-11-23 22:36:22,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715 to 715. [2024-11-23 22:36:22,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 715 states, 574 states have (on average 1.6097560975609757) internal successors, (924), 597 states have internal predecessors, (924), 107 states have call successors, (107), 30 states have call predecessors, (107), 33 states have return successors, (107), 100 states have call predecessors, (107), 102 states have call successors, (107) [2024-11-23 22:36:22,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 715 states to 715 states and 1138 transitions. [2024-11-23 22:36:22,441 INFO L78 Accepts]: Start accepts. Automaton has 715 states and 1138 transitions. Word has length 143 [2024-11-23 22:36:22,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:36:22,444 INFO L471 AbstractCegarLoop]: Abstraction has 715 states and 1138 transitions. [2024-11-23 22:36:22,444 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-23 22:36:22,444 INFO L276 IsEmpty]: Start isEmpty. Operand 715 states and 1138 transitions. [2024-11-23 22:36:22,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-23 22:36:22,448 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:36:22,448 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:36:22,460 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-23 22:36:22,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-23 22:36:22,649 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:36:22,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:36:22,651 INFO L85 PathProgramCache]: Analyzing trace with hash 661563653, now seen corresponding path program 1 times [2024-11-23 22:36:22,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:36:22,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906221424] [2024-11-23 22:36:22,651 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:22,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:36:22,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:22,757 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-23 22:36:22,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:36:22,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906221424] [2024-11-23 22:36:22,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906221424] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:36:22,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064855530] [2024-11-23 22:36:22,758 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:22,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:36:22,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:36:22,760 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:36:22,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-23 22:36:23,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:23,181 INFO L256 TraceCheckSpWp]: Trace formula consists of 1868 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-23 22:36:23,188 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:36:23,335 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-23 22:36:23,335 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:36:23,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064855530] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:36:23,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:36:23,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-11-23 22:36:23,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984024358] [2024-11-23 22:36:23,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:36:23,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 22:36:23,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:36:23,338 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 22:36:23,338 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-23 22:36:23,338 INFO L87 Difference]: Start difference. First operand 715 states and 1138 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-23 22:36:23,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:36:23,976 INFO L93 Difference]: Finished difference Result 1231 states and 2007 transitions. [2024-11-23 22:36:23,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 22:36:23,979 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 145 [2024-11-23 22:36:23,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:36:23,986 INFO L225 Difference]: With dead ends: 1231 [2024-11-23 22:36:23,986 INFO L226 Difference]: Without dead ends: 723 [2024-11-23 22:36:23,988 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-23 22:36:23,989 INFO L435 NwaCegarLoop]: 928 mSDtfsCounter, 895 mSDsluCounter, 1458 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 902 SdHoareTripleChecker+Valid, 2386 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-23 22:36:23,989 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [902 Valid, 2386 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-23 22:36:23,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2024-11-23 22:36:24,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 723. [2024-11-23 22:36:24,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 723 states, 581 states have (on average 1.6110154905335627) internal successors, (936), 604 states have internal predecessors, (936), 107 states have call successors, (107), 31 states have call predecessors, (107), 34 states have return successors, (108), 100 states have call predecessors, (108), 102 states have call successors, (108) [2024-11-23 22:36:24,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 1151 transitions. [2024-11-23 22:36:24,017 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 1151 transitions. Word has length 145 [2024-11-23 22:36:24,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:36:24,018 INFO L471 AbstractCegarLoop]: Abstraction has 723 states and 1151 transitions. [2024-11-23 22:36:24,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-23 22:36:24,018 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 1151 transitions. [2024-11-23 22:36:24,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-23 22:36:24,022 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:36:24,022 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:36:24,033 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-23 22:36:24,222 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:36:24,223 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:36:24,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:36:24,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1289345793, now seen corresponding path program 1 times [2024-11-23 22:36:24,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:36:24,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037679520] [2024-11-23 22:36:24,223 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:24,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:36:24,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:24,327 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-23 22:36:24,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:36:24,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037679520] [2024-11-23 22:36:24,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037679520] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:36:24,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951193332] [2024-11-23 22:36:24,328 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:24,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:36:24,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:36:24,330 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:36:24,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-23 22:36:24,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:24,735 INFO L256 TraceCheckSpWp]: Trace formula consists of 1870 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-23 22:36:24,738 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:36:24,876 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-23 22:36:24,876 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:36:24,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [951193332] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:36:24,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:36:24,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-11-23 22:36:24,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203062007] [2024-11-23 22:36:24,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:36:24,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 22:36:24,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:36:24,878 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 22:36:24,878 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-23 22:36:24,879 INFO L87 Difference]: Start difference. First operand 723 states and 1151 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-23 22:36:25,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:36:25,471 INFO L93 Difference]: Finished difference Result 1247 states and 2030 transitions. [2024-11-23 22:36:25,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 22:36:25,471 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 147 [2024-11-23 22:36:25,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:36:25,477 INFO L225 Difference]: With dead ends: 1247 [2024-11-23 22:36:25,477 INFO L226 Difference]: Without dead ends: 731 [2024-11-23 22:36:25,480 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-23 22:36:25,483 INFO L435 NwaCegarLoop]: 925 mSDtfsCounter, 887 mSDsluCounter, 1458 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 897 SdHoareTripleChecker+Valid, 2383 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-23 22:36:25,483 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [897 Valid, 2383 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 464 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-23 22:36:25,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2024-11-23 22:36:25,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 731. [2024-11-23 22:36:25,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 731 states, 588 states have (on average 1.6122448979591837) internal successors, (948), 611 states have internal predecessors, (948), 107 states have call successors, (107), 32 states have call predecessors, (107), 35 states have return successors, (109), 100 states have call predecessors, (109), 102 states have call successors, (109) [2024-11-23 22:36:25,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 1164 transitions. [2024-11-23 22:36:25,520 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 1164 transitions. Word has length 147 [2024-11-23 22:36:25,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:36:25,521 INFO L471 AbstractCegarLoop]: Abstraction has 731 states and 1164 transitions. [2024-11-23 22:36:25,521 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-23 22:36:25,521 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 1164 transitions. [2024-11-23 22:36:25,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-11-23 22:36:25,525 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:36:25,526 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:36:25,538 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-23 22:36:25,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:36:25,726 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:36:25,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:36:25,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1831186637, now seen corresponding path program 1 times [2024-11-23 22:36:25,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:36:25,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504881683] [2024-11-23 22:36:25,727 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:25,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:36:25,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:25,843 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-23 22:36:25,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:36:25,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504881683] [2024-11-23 22:36:25,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504881683] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:36:25,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155275729] [2024-11-23 22:36:25,844 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:25,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:36:25,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:36:25,846 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:36:25,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-23 22:36:26,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:26,253 INFO L256 TraceCheckSpWp]: Trace formula consists of 1872 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-23 22:36:26,256 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:36:26,398 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-23 22:36:26,398 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:36:26,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [155275729] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:36:26,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:36:26,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-11-23 22:36:26,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246318553] [2024-11-23 22:36:26,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:36:26,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 22:36:26,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:36:26,400 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 22:36:26,400 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-23 22:36:26,400 INFO L87 Difference]: Start difference. First operand 731 states and 1164 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-23 22:36:26,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:36:26,974 INFO L93 Difference]: Finished difference Result 1263 states and 2053 transitions. [2024-11-23 22:36:26,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 22:36:26,974 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 149 [2024-11-23 22:36:26,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:36:26,978 INFO L225 Difference]: With dead ends: 1263 [2024-11-23 22:36:26,978 INFO L226 Difference]: Without dead ends: 739 [2024-11-23 22:36:26,980 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-23 22:36:26,981 INFO L435 NwaCegarLoop]: 922 mSDtfsCounter, 883 mSDsluCounter, 1458 mSDsCounter, 0 mSdLazyCounter, 463 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 896 SdHoareTripleChecker+Valid, 2380 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-23 22:36:26,981 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [896 Valid, 2380 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 463 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-23 22:36:26,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states. [2024-11-23 22:36:27,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 739. [2024-11-23 22:36:27,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 739 states, 595 states have (on average 1.6134453781512605) internal successors, (960), 618 states have internal predecessors, (960), 107 states have call successors, (107), 33 states have call predecessors, (107), 36 states have return successors, (110), 100 states have call predecessors, (110), 102 states have call successors, (110) [2024-11-23 22:36:27,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 739 states to 739 states and 1177 transitions. [2024-11-23 22:36:27,010 INFO L78 Accepts]: Start accepts. Automaton has 739 states and 1177 transitions. Word has length 149 [2024-11-23 22:36:27,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:36:27,010 INFO L471 AbstractCegarLoop]: Abstraction has 739 states and 1177 transitions. [2024-11-23 22:36:27,010 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-23 22:36:27,011 INFO L276 IsEmpty]: Start isEmpty. Operand 739 states and 1177 transitions. [2024-11-23 22:36:27,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-11-23 22:36:27,015 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:36:27,015 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:36:27,029 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-23 22:36:27,215 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:36:27,216 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:36:27,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:36:27,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1400217279, now seen corresponding path program 1 times [2024-11-23 22:36:27,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:36:27,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234748377] [2024-11-23 22:36:27,217 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:27,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:36:27,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:27,338 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-23 22:36:27,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:36:27,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234748377] [2024-11-23 22:36:27,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234748377] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:36:27,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195633735] [2024-11-23 22:36:27,339 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:27,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:36:27,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:36:27,341 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:36:27,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-23 22:36:27,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:27,746 INFO L256 TraceCheckSpWp]: Trace formula consists of 1874 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-23 22:36:27,750 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:36:27,968 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-23 22:36:27,968 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:36:27,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [195633735] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:36:27,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:36:27,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-11-23 22:36:27,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193567027] [2024-11-23 22:36:27,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:36:27,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 22:36:27,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:36:27,970 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 22:36:27,970 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-23 22:36:27,970 INFO L87 Difference]: Start difference. First operand 739 states and 1177 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-23 22:36:28,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:36:28,473 INFO L93 Difference]: Finished difference Result 787 states and 1248 transitions. [2024-11-23 22:36:28,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 22:36:28,474 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) Word has length 151 [2024-11-23 22:36:28,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:36:28,480 INFO L225 Difference]: With dead ends: 787 [2024-11-23 22:36:28,480 INFO L226 Difference]: Without dead ends: 772 [2024-11-23 22:36:28,482 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-23 22:36:28,484 INFO L435 NwaCegarLoop]: 939 mSDtfsCounter, 915 mSDsluCounter, 1474 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 923 SdHoareTripleChecker+Valid, 2413 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-23 22:36:28,485 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [923 Valid, 2413 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-23 22:36:28,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2024-11-23 22:36:28,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 741. [2024-11-23 22:36:28,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 741 states, 597 states have (on average 1.6113902847571189) internal successors, (962), 620 states have internal predecessors, (962), 107 states have call successors, (107), 33 states have call predecessors, (107), 36 states have return successors, (110), 100 states have call predecessors, (110), 102 states have call successors, (110) [2024-11-23 22:36:28,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 741 states to 741 states and 1179 transitions. [2024-11-23 22:36:28,528 INFO L78 Accepts]: Start accepts. Automaton has 741 states and 1179 transitions. Word has length 151 [2024-11-23 22:36:28,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:36:28,529 INFO L471 AbstractCegarLoop]: Abstraction has 741 states and 1179 transitions. [2024-11-23 22:36:28,529 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-23 22:36:28,529 INFO L276 IsEmpty]: Start isEmpty. Operand 741 states and 1179 transitions. [2024-11-23 22:36:28,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-23 22:36:28,534 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:36:28,534 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:36:28,549 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-23 22:36:28,734 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:36:28,735 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:36:28,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:36:28,735 INFO L85 PathProgramCache]: Analyzing trace with hash -947379558, now seen corresponding path program 1 times [2024-11-23 22:36:28,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:36:28,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012007689] [2024-11-23 22:36:28,736 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:28,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:36:28,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:28,875 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-23 22:36:28,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:36:28,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012007689] [2024-11-23 22:36:28,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012007689] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:36:28,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794177167] [2024-11-23 22:36:28,875 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:28,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:36:28,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:36:28,878 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:36:28,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-23 22:36:29,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:29,327 INFO L256 TraceCheckSpWp]: Trace formula consists of 1890 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 22:36:29,330 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:36:29,361 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-23 22:36:29,361 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:36:29,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794177167] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:36:29,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:36:29,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2024-11-23 22:36:29,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622168389] [2024-11-23 22:36:29,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:36:29,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 22:36:29,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:36:29,363 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 22:36:29,363 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-23 22:36:29,363 INFO L87 Difference]: Start difference. First operand 741 states and 1179 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-23 22:36:29,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:36:29,395 INFO L93 Difference]: Finished difference Result 756 states and 1197 transitions. [2024-11-23 22:36:29,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 22:36:29,396 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 1 states have call successors, (17) Word has length 157 [2024-11-23 22:36:29,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:36:29,401 INFO L225 Difference]: With dead ends: 756 [2024-11-23 22:36:29,401 INFO L226 Difference]: Without dead ends: 741 [2024-11-23 22:36:29,402 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-23 22:36:29,403 INFO L435 NwaCegarLoop]: 946 mSDtfsCounter, 0 mSDsluCounter, 2834 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3780 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 [2024-11-23 22:36:29,403 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3780 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:36:29,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2024-11-23 22:36:29,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 741. [2024-11-23 22:36:29,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 741 states, 597 states have (on average 1.609715242881072) internal successors, (961), 620 states have internal predecessors, (961), 107 states have call successors, (107), 33 states have call predecessors, (107), 36 states have return successors, (110), 100 states have call predecessors, (110), 102 states have call successors, (110) [2024-11-23 22:36:29,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 741 states to 741 states and 1178 transitions. [2024-11-23 22:36:29,435 INFO L78 Accepts]: Start accepts. Automaton has 741 states and 1178 transitions. Word has length 157 [2024-11-23 22:36:29,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:36:29,436 INFO L471 AbstractCegarLoop]: Abstraction has 741 states and 1178 transitions. [2024-11-23 22:36:29,436 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-23 22:36:29,436 INFO L276 IsEmpty]: Start isEmpty. Operand 741 states and 1178 transitions. [2024-11-23 22:36:29,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-23 22:36:29,440 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:36:29,440 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:36:29,453 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-23 22:36:29,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:36:29,641 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:36:29,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:36:29,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1596352153, now seen corresponding path program 1 times [2024-11-23 22:36:29,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:36:29,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864666076] [2024-11-23 22:36:29,642 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:29,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:36:29,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:29,754 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-23 22:36:29,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:36:29,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864666076] [2024-11-23 22:36:29,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864666076] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:36:29,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349469475] [2024-11-23 22:36:29,755 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:29,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:36:29,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:36:29,757 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:36:29,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-23 22:36:30,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:30,180 INFO L256 TraceCheckSpWp]: Trace formula consists of 1927 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 22:36:30,184 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:36:30,198 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-23 22:36:30,198 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:36:30,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [349469475] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:36:30,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:36:30,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-11-23 22:36:30,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313596329] [2024-11-23 22:36:30,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:36:30,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 22:36:30,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:36:30,199 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 22:36:30,199 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 22:36:30,201 INFO L87 Difference]: Start difference. First operand 741 states and 1178 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-23 22:36:30,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:36:30,294 INFO L93 Difference]: Finished difference Result 1456 states and 2326 transitions. [2024-11-23 22:36:30,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 22:36:30,295 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) Word has length 168 [2024-11-23 22:36:30,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:36:30,300 INFO L225 Difference]: With dead ends: 1456 [2024-11-23 22:36:30,300 INFO L226 Difference]: Without dead ends: 710 [2024-11-23 22:36:30,303 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 22:36:30,303 INFO L435 NwaCegarLoop]: 940 mSDtfsCounter, 7 mSDsluCounter, 1873 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2813 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 22:36:30,304 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2813 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 22:36:30,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2024-11-23 22:36:30,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 710. [2024-11-23 22:36:30,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 710 states, 569 states have (on average 1.6080843585237259) internal successors, (915), 590 states have internal predecessors, (915), 106 states have call successors, (106), 33 states have call predecessors, (106), 34 states have return successors, (107), 99 states have call predecessors, (107), 101 states have call successors, (107) [2024-11-23 22:36:30,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 710 states to 710 states and 1128 transitions. [2024-11-23 22:36:30,346 INFO L78 Accepts]: Start accepts. Automaton has 710 states and 1128 transitions. Word has length 168 [2024-11-23 22:36:30,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:36:30,346 INFO L471 AbstractCegarLoop]: Abstraction has 710 states and 1128 transitions. [2024-11-23 22:36:30,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-23 22:36:30,346 INFO L276 IsEmpty]: Start isEmpty. Operand 710 states and 1128 transitions. [2024-11-23 22:36:30,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-11-23 22:36:30,350 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:36:30,351 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:36:30,363 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-23 22:36:30,551 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:36:30,552 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:36:30,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:36:30,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1432542578, now seen corresponding path program 1 times [2024-11-23 22:36:30,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:36:30,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526404569] [2024-11-23 22:36:30,554 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:30,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:36:30,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:30,801 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-23 22:36:30,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:36:30,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526404569] [2024-11-23 22:36:30,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526404569] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:36:30,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143481060] [2024-11-23 22:36:30,802 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:30,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:36:30,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:36:30,804 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:36:30,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-23 22:36:31,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:31,250 INFO L256 TraceCheckSpWp]: Trace formula consists of 1930 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-23 22:36:31,255 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:36:31,294 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-23 22:36:31,294 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:36:31,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2143481060] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:36:31,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:36:31,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 7 [2024-11-23 22:36:31,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635939955] [2024-11-23 22:36:31,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:36:31,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 22:36:31,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:36:31,295 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 22:36:31,296 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-23 22:36:31,296 INFO L87 Difference]: Start difference. First operand 710 states and 1128 transitions. Second operand has 7 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-23 22:36:31,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:36:31,394 INFO L93 Difference]: Finished difference Result 1389 states and 2220 transitions. [2024-11-23 22:36:31,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 22:36:31,394 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) Word has length 170 [2024-11-23 22:36:31,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:36:31,401 INFO L225 Difference]: With dead ends: 1389 [2024-11-23 22:36:31,401 INFO L226 Difference]: Without dead ends: 710 [2024-11-23 22:36:31,403 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-23 22:36:31,404 INFO L435 NwaCegarLoop]: 958 mSDtfsCounter, 119 mSDsluCounter, 4664 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 5622 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 22:36:31,405 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 5622 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 22:36:31,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2024-11-23 22:36:31,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 689. [2024-11-23 22:36:31,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 689 states, 548 states have (on average 1.6076642335766422) internal successors, (881), 569 states have internal predecessors, (881), 106 states have call successors, (106), 33 states have call predecessors, (106), 34 states have return successors, (107), 99 states have call predecessors, (107), 101 states have call successors, (107) [2024-11-23 22:36:31,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 1094 transitions. [2024-11-23 22:36:31,437 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 1094 transitions. Word has length 170 [2024-11-23 22:36:31,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:36:31,437 INFO L471 AbstractCegarLoop]: Abstraction has 689 states and 1094 transitions. [2024-11-23 22:36:31,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-23 22:36:31,438 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 1094 transitions. [2024-11-23 22:36:31,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-11-23 22:36:31,440 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:36:31,441 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:36:31,453 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-11-23 22:36:31,645 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:36:31,645 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:36:31,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:36:31,646 INFO L85 PathProgramCache]: Analyzing trace with hash -294085197, now seen corresponding path program 1 times [2024-11-23 22:36:31,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:36:31,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373252870] [2024-11-23 22:36:31,646 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:31,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:36:31,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:31,851 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-23 22:36:31,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:36:31,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373252870] [2024-11-23 22:36:31,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373252870] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:36:31,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [248247560] [2024-11-23 22:36:31,852 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:31,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:36:31,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:36:31,854 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:36:31,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-23 22:36:32,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:32,285 INFO L256 TraceCheckSpWp]: Trace formula consists of 1936 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 22:36:32,289 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:36:32,334 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-23 22:36:32,334 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:36:32,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [248247560] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:36:32,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:36:32,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-23 22:36:32,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665604483] [2024-11-23 22:36:32,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:36:32,335 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 22:36:32,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:36:32,335 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 22:36:32,336 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-23 22:36:32,336 INFO L87 Difference]: Start difference. First operand 689 states and 1094 transitions. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-23 22:36:32,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:36:32,461 INFO L93 Difference]: Finished difference Result 1371 states and 2190 transitions. [2024-11-23 22:36:32,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 22:36:32,462 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 172 [2024-11-23 22:36:32,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:36:32,469 INFO L225 Difference]: With dead ends: 1371 [2024-11-23 22:36:32,469 INFO L226 Difference]: Without dead ends: 713 [2024-11-23 22:36:32,471 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-23 22:36:32,472 INFO L435 NwaCegarLoop]: 923 mSDtfsCounter, 128 mSDsluCounter, 1769 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 2692 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 [2024-11-23 22:36:32,473 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 2692 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 22:36:32,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2024-11-23 22:36:32,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 689. [2024-11-23 22:36:32,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 689 states, 548 states have (on average 1.6058394160583942) internal successors, (880), 569 states have internal predecessors, (880), 106 states have call successors, (106), 33 states have call predecessors, (106), 34 states have return successors, (107), 99 states have call predecessors, (107), 101 states have call successors, (107) [2024-11-23 22:36:32,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 1093 transitions. [2024-11-23 22:36:32,501 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 1093 transitions. Word has length 172 [2024-11-23 22:36:32,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:36:32,501 INFO L471 AbstractCegarLoop]: Abstraction has 689 states and 1093 transitions. [2024-11-23 22:36:32,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-23 22:36:32,501 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 1093 transitions. [2024-11-23 22:36:32,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-11-23 22:36:32,504 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:36:32,504 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:36:32,516 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-11-23 22:36:32,705 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:36:32,707 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:36:32,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:36:32,708 INFO L85 PathProgramCache]: Analyzing trace with hash -42145738, now seen corresponding path program 1 times [2024-11-23 22:36:32,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:36:32,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272556964] [2024-11-23 22:36:32,708 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:32,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:36:32,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:32,820 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-23 22:36:32,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:36:32,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272556964] [2024-11-23 22:36:32,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272556964] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:36:32,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:36:32,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 22:36:32,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180564512] [2024-11-23 22:36:32,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:36:32,824 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 22:36:32,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:36:32,825 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 22:36:32,825 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 22:36:32,825 INFO L87 Difference]: Start difference. First operand 689 states and 1093 transitions. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-23 22:36:32,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:36:32,876 INFO L93 Difference]: Finished difference Result 1306 states and 2099 transitions. [2024-11-23 22:36:32,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 22:36:32,876 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 173 [2024-11-23 22:36:32,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:36:32,881 INFO L225 Difference]: With dead ends: 1306 [2024-11-23 22:36:32,882 INFO L226 Difference]: Without dead ends: 649 [2024-11-23 22:36:32,884 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 [2024-11-23 22:36:32,885 INFO L435 NwaCegarLoop]: 938 mSDtfsCounter, 8 mSDsluCounter, 1872 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2810 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 [2024-11-23 22:36:32,885 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 2810 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:36:32,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2024-11-23 22:36:32,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 649. [2024-11-23 22:36:32,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 649 states, 511 states have (on average 1.598825831702544) internal successors, (817), 530 states have internal predecessors, (817), 105 states have call successors, (105), 33 states have call predecessors, (105), 32 states have return successors, (104), 98 states have call predecessors, (104), 100 states have call successors, (104) [2024-11-23 22:36:32,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 1026 transitions. [2024-11-23 22:36:32,911 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 1026 transitions. Word has length 173 [2024-11-23 22:36:32,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:36:32,911 INFO L471 AbstractCegarLoop]: Abstraction has 649 states and 1026 transitions. [2024-11-23 22:36:32,912 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-23 22:36:32,912 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 1026 transitions. [2024-11-23 22:36:32,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-11-23 22:36:32,914 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:36:32,915 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:36:32,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-23 22:36:32,915 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:36:32,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:36:32,915 INFO L85 PathProgramCache]: Analyzing trace with hash 2049104430, now seen corresponding path program 1 times [2024-11-23 22:36:32,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:36:32,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214303905] [2024-11-23 22:36:32,916 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:32,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:36:32,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:33,118 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-23 22:36:33,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:36:33,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214303905] [2024-11-23 22:36:33,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214303905] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:36:33,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:36:33,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 22:36:33,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431483006] [2024-11-23 22:36:33,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:36:33,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 22:36:33,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:36:33,119 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 22:36:33,120 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-23 22:36:33,120 INFO L87 Difference]: Start difference. First operand 649 states and 1026 transitions. Second operand has 7 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-23 22:36:33,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:36:33,202 INFO L93 Difference]: Finished difference Result 1209 states and 1938 transitions. [2024-11-23 22:36:33,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 22:36:33,202 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 174 [2024-11-23 22:36:33,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:36:33,207 INFO L225 Difference]: With dead ends: 1209 [2024-11-23 22:36:33,207 INFO L226 Difference]: Without dead ends: 635 [2024-11-23 22:36:33,209 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 [2024-11-23 22:36:33,210 INFO L435 NwaCegarLoop]: 921 mSDtfsCounter, 88 mSDsluCounter, 4527 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 5448 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:36:33,210 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 5448 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:36:33,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2024-11-23 22:36:33,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 635. [2024-11-23 22:36:33,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635 states, 497 states have (on average 1.5935613682092555) internal successors, (792), 516 states have internal predecessors, (792), 105 states have call successors, (105), 33 states have call predecessors, (105), 32 states have return successors, (104), 98 states have call predecessors, (104), 100 states have call successors, (104) [2024-11-23 22:36:33,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 1001 transitions. [2024-11-23 22:36:33,233 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 1001 transitions. Word has length 174 [2024-11-23 22:36:33,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:36:33,233 INFO L471 AbstractCegarLoop]: Abstraction has 635 states and 1001 transitions. [2024-11-23 22:36:33,233 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-23 22:36:33,233 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 1001 transitions. [2024-11-23 22:36:33,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-11-23 22:36:33,236 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:36:33,236 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:36:33,236 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-23 22:36:33,236 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:36:33,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:36:33,237 INFO L85 PathProgramCache]: Analyzing trace with hash 64046684, now seen corresponding path program 1 times [2024-11-23 22:36:33,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:36:33,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339773131] [2024-11-23 22:36:33,237 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:33,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:36:33,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:33,604 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-23 22:36:33,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:36:33,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339773131] [2024-11-23 22:36:33,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339773131] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:36:33,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:36:33,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-23 22:36:33,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603688979] [2024-11-23 22:36:33,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:36:33,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-23 22:36:33,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:36:33,605 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 22:36:33,606 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-23 22:36:33,606 INFO L87 Difference]: Start difference. First operand 635 states and 1001 transitions. Second operand has 10 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-23 22:36:33,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:36:33,835 INFO L93 Difference]: Finished difference Result 1236 states and 1966 transitions. [2024-11-23 22:36:33,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-23 22:36:33,836 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 175 [2024-11-23 22:36:33,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:36:33,842 INFO L225 Difference]: With dead ends: 1236 [2024-11-23 22:36:33,842 INFO L226 Difference]: Without dead ends: 626 [2024-11-23 22:36:33,844 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-23 22:36:33,845 INFO L435 NwaCegarLoop]: 881 mSDtfsCounter, 45 mSDsluCounter, 6124 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 7005 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 22:36:33,845 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 7005 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 22:36:33,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2024-11-23 22:36:33,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 626. [2024-11-23 22:36:33,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 626 states, 488 states have (on average 1.5922131147540983) internal successors, (777), 507 states have internal predecessors, (777), 105 states have call successors, (105), 33 states have call predecessors, (105), 32 states have return successors, (104), 98 states have call predecessors, (104), 100 states have call successors, (104) [2024-11-23 22:36:33,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 986 transitions. [2024-11-23 22:36:33,871 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 986 transitions. Word has length 175 [2024-11-23 22:36:33,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:36:33,872 INFO L471 AbstractCegarLoop]: Abstraction has 626 states and 986 transitions. [2024-11-23 22:36:33,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-23 22:36:33,872 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 986 transitions. [2024-11-23 22:36:33,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-23 22:36:33,875 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:36:33,875 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:36:33,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-23 22:36:33,876 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:36:33,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:36:33,876 INFO L85 PathProgramCache]: Analyzing trace with hash 467309175, now seen corresponding path program 1 times [2024-11-23 22:36:33,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:36:33,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242733285] [2024-11-23 22:36:33,876 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:33,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:36:33,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:34,231 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-23 22:36:34,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:36:34,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242733285] [2024-11-23 22:36:34,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242733285] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:36:34,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:36:34,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-23 22:36:34,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078899755] [2024-11-23 22:36:34,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:36:34,233 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-23 22:36:34,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:36:34,233 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 22:36:34,233 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-23 22:36:34,234 INFO L87 Difference]: Start difference. First operand 626 states and 986 transitions. Second operand has 10 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-23 22:36:34,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:36:34,396 INFO L93 Difference]: Finished difference Result 1168 states and 1872 transitions. [2024-11-23 22:36:34,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 22:36:34,397 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 176 [2024-11-23 22:36:34,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:36:34,403 INFO L225 Difference]: With dead ends: 1168 [2024-11-23 22:36:34,404 INFO L226 Difference]: Without dead ends: 620 [2024-11-23 22:36:34,406 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-23 22:36:34,407 INFO L435 NwaCegarLoop]: 890 mSDtfsCounter, 31 mSDsluCounter, 7072 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 7962 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 22:36:34,407 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 7962 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 22:36:34,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2024-11-23 22:36:34,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 620. [2024-11-23 22:36:34,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 620 states, 482 states have (on average 1.5975103734439835) internal successors, (770), 501 states have internal predecessors, (770), 105 states have call successors, (105), 33 states have call predecessors, (105), 32 states have return successors, (104), 98 states have call predecessors, (104), 100 states have call successors, (104) [2024-11-23 22:36:34,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 979 transitions. [2024-11-23 22:36:34,442 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 979 transitions. Word has length 176 [2024-11-23 22:36:34,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:36:34,443 INFO L471 AbstractCegarLoop]: Abstraction has 620 states and 979 transitions. [2024-11-23 22:36:34,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-23 22:36:34,443 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 979 transitions. [2024-11-23 22:36:34,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-23 22:36:34,447 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:36:34,447 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:36:34,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-23 22:36:34,447 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:36:34,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:36:34,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1533956043, now seen corresponding path program 1 times [2024-11-23 22:36:34,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:36:34,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550368976] [2024-11-23 22:36:34,448 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:34,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:36:34,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:34,988 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-23 22:36:34,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:36:34,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550368976] [2024-11-23 22:36:34,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550368976] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:36:34,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63799536] [2024-11-23 22:36:34,989 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:34,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:36:34,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:36:34,992 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:36:34,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-23 22:36:35,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:35,459 INFO L256 TraceCheckSpWp]: Trace formula consists of 1941 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-23 22:36:35,462 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:36:35,653 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-23 22:36:35,653 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:36:35,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [63799536] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:36:35,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:36:35,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2024-11-23 22:36:35,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993859790] [2024-11-23 22:36:35,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:36:35,654 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 22:36:35,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:36:35,654 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 22:36:35,654 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2024-11-23 22:36:35,655 INFO L87 Difference]: Start difference. First operand 620 states and 979 transitions. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 5 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) [2024-11-23 22:36:38,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:36:38,632 INFO L93 Difference]: Finished difference Result 1871 states and 3051 transitions. [2024-11-23 22:36:38,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-23 22:36:38,632 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 5 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) Word has length 176 [2024-11-23 22:36:38,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:36:38,646 INFO L225 Difference]: With dead ends: 1871 [2024-11-23 22:36:38,646 INFO L226 Difference]: Without dead ends: 1337 [2024-11-23 22:36:38,649 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=521, Unknown=0, NotChecked=0, Total=600 [2024-11-23 22:36:38,650 INFO L435 NwaCegarLoop]: 486 mSDtfsCounter, 2173 mSDsluCounter, 1553 mSDsCounter, 0 mSdLazyCounter, 3571 mSolverCounterSat, 508 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2263 SdHoareTripleChecker+Valid, 2039 SdHoareTripleChecker+Invalid, 4079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 508 IncrementalHoareTripleChecker+Valid, 3571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-23 22:36:38,650 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2263 Valid, 2039 Invalid, 4079 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [508 Valid, 3571 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-23 22:36:38,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1337 states. [2024-11-23 22:36:38,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1337 to 1249. [2024-11-23 22:36:38,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1249 states, 967 states have (on average 1.6204756980351602) internal successors, (1567), 1004 states have internal predecessors, (1567), 215 states have call successors, (215), 61 states have call predecessors, (215), 66 states have return successors, (241), 208 states have call predecessors, (241), 210 states have call successors, (241) [2024-11-23 22:36:38,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1249 states to 1249 states and 2023 transitions. [2024-11-23 22:36:38,738 INFO L78 Accepts]: Start accepts. Automaton has 1249 states and 2023 transitions. Word has length 176 [2024-11-23 22:36:38,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:36:38,740 INFO L471 AbstractCegarLoop]: Abstraction has 1249 states and 2023 transitions. [2024-11-23 22:36:38,740 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 5 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) [2024-11-23 22:36:38,740 INFO L276 IsEmpty]: Start isEmpty. Operand 1249 states and 2023 transitions. [2024-11-23 22:36:38,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-11-23 22:36:38,743 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:36:38,743 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:36:38,756 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-23 22:36:38,944 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:36:38,944 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:36:38,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:36:38,945 INFO L85 PathProgramCache]: Analyzing trace with hash 845563668, now seen corresponding path program 1 times [2024-11-23 22:36:38,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:36:38,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926012297] [2024-11-23 22:36:38,946 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:38,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:36:38,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:39,408 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-23 22:36:39,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:36:39,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926012297] [2024-11-23 22:36:39,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926012297] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:36:39,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229241261] [2024-11-23 22:36:39,409 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:39,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:36:39,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:36:39,412 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:36:39,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-23 22:36:39,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:39,927 INFO L256 TraceCheckSpWp]: Trace formula consists of 1958 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-23 22:36:39,931 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:36:39,974 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-23 22:36:39,974 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:36:39,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [229241261] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:36:39,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:36:39,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2024-11-23 22:36:39,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502722408] [2024-11-23 22:36:39,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:36:39,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 22:36:39,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:36:39,976 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 22:36:39,976 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-23 22:36:39,976 INFO L87 Difference]: Start difference. First operand 1249 states and 2023 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-23 22:36:40,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:36:40,083 INFO L93 Difference]: Finished difference Result 2965 states and 4879 transitions. [2024-11-23 22:36:40,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 22:36:40,083 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 181 [2024-11-23 22:36:40,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:36:40,097 INFO L225 Difference]: With dead ends: 2965 [2024-11-23 22:36:40,097 INFO L226 Difference]: Without dead ends: 1805 [2024-11-23 22:36:40,102 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-23 22:36:40,103 INFO L435 NwaCegarLoop]: 1592 mSDtfsCounter, 814 mSDsluCounter, 896 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 814 SdHoareTripleChecker+Valid, 2488 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 [2024-11-23 22:36:40,103 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [814 Valid, 2488 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:36:40,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1805 states. [2024-11-23 22:36:40,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1805 to 1247. [2024-11-23 22:36:40,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1247 states, 966 states have (on average 1.6200828157349896) internal successors, (1565), 1002 states have internal predecessors, (1565), 215 states have call successors, (215), 61 states have call predecessors, (215), 65 states have return successors, (235), 208 states have call predecessors, (235), 210 states have call successors, (235) [2024-11-23 22:36:40,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1247 states to 1247 states and 2015 transitions. [2024-11-23 22:36:40,172 INFO L78 Accepts]: Start accepts. Automaton has 1247 states and 2015 transitions. Word has length 181 [2024-11-23 22:36:40,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:36:40,173 INFO L471 AbstractCegarLoop]: Abstraction has 1247 states and 2015 transitions. [2024-11-23 22:36:40,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-23 22:36:40,173 INFO L276 IsEmpty]: Start isEmpty. Operand 1247 states and 2015 transitions. [2024-11-23 22:36:40,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-11-23 22:36:40,176 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:36:40,176 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:36:40,189 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-11-23 22:36:40,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:36:40,381 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:36:40,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:36:40,381 INFO L85 PathProgramCache]: Analyzing trace with hash -51829610, now seen corresponding path program 1 times [2024-11-23 22:36:40,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:36:40,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157576400] [2024-11-23 22:36:40,382 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:40,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:36:40,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:40,845 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-23 22:36:40,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:36:40,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157576400] [2024-11-23 22:36:40,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157576400] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:36:40,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2110484844] [2024-11-23 22:36:40,846 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:40,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:36:40,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:36:40,848 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:36:40,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-23 22:36:41,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:41,305 INFO L256 TraceCheckSpWp]: Trace formula consists of 1957 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-23 22:36:41,309 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:36:41,489 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-23 22:36:41,489 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:36:41,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2110484844] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:36:41,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:36:41,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2024-11-23 22:36:41,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663934600] [2024-11-23 22:36:41,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:36:41,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 22:36:41,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:36:41,490 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 22:36:41,490 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-23 22:36:41,491 INFO L87 Difference]: Start difference. First operand 1247 states and 2015 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 4 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-23 22:36:42,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:36:42,481 INFO L93 Difference]: Finished difference Result 2392 states and 3909 transitions. [2024-11-23 22:36:42,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 22:36:42,482 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), 4 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 181 [2024-11-23 22:36:42,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:36:42,493 INFO L225 Difference]: With dead ends: 2392 [2024-11-23 22:36:42,493 INFO L226 Difference]: Without dead ends: 1231 [2024-11-23 22:36:42,497 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-11-23 22:36:42,498 INFO L435 NwaCegarLoop]: 306 mSDtfsCounter, 1314 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 598 mSolverCounterSat, 375 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1314 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 375 IncrementalHoareTripleChecker+Valid, 598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-23 22:36:42,498 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1314 Valid, 320 Invalid, 973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [375 Valid, 598 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-23 22:36:42,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1231 states. [2024-11-23 22:36:42,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1231 to 1231. [2024-11-23 22:36:42,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1231 states, 956 states have (on average 1.6150627615062763) internal successors, (1544), 991 states have internal predecessors, (1544), 209 states have call successors, (209), 61 states have call predecessors, (209), 65 states have return successors, (230), 203 states have call predecessors, (230), 205 states have call successors, (230) [2024-11-23 22:36:42,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1231 states to 1231 states and 1983 transitions. [2024-11-23 22:36:42,565 INFO L78 Accepts]: Start accepts. Automaton has 1231 states and 1983 transitions. Word has length 181 [2024-11-23 22:36:42,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:36:42,566 INFO L471 AbstractCegarLoop]: Abstraction has 1231 states and 1983 transitions. [2024-11-23 22:36:42,566 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), 4 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-23 22:36:42,566 INFO L276 IsEmpty]: Start isEmpty. Operand 1231 states and 1983 transitions. [2024-11-23 22:36:42,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2024-11-23 22:36:42,569 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:36:42,569 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:36:42,581 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2024-11-23 22:36:42,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-11-23 22:36:42,771 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:36:42,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:36:42,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1606830743, now seen corresponding path program 1 times [2024-11-23 22:36:42,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:36:42,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385109932] [2024-11-23 22:36:42,772 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:42,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:36:42,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:43,334 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-23 22:36:43,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:36:43,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385109932] [2024-11-23 22:36:43,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385109932] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:36:43,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [368043331] [2024-11-23 22:36:43,335 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:43,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:36:43,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:36:43,339 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:36:43,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-23 22:36:43,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:43,777 INFO L256 TraceCheckSpWp]: Trace formula consists of 1959 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-23 22:36:43,780 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:36:43,848 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-11-23 22:36:43,848 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:36:44,101 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-23 22:36:44,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [368043331] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-23 22:36:44,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-23 22:36:44,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10, 6] total 15 [2024-11-23 22:36:44,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327796452] [2024-11-23 22:36:44,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:36:44,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 22:36:44,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:36:44,103 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 22:36:44,103 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2024-11-23 22:36:44,103 INFO L87 Difference]: Start difference. First operand 1231 states and 1983 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2024-11-23 22:36:44,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:36:44,185 INFO L93 Difference]: Finished difference Result 1251 states and 2007 transitions. [2024-11-23 22:36:44,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 22:36:44,186 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) Word has length 182 [2024-11-23 22:36:44,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:36:44,199 INFO L225 Difference]: With dead ends: 1251 [2024-11-23 22:36:44,200 INFO L226 Difference]: Without dead ends: 1237 [2024-11-23 22:36:44,201 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 369 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2024-11-23 22:36:44,201 INFO L435 NwaCegarLoop]: 895 mSDtfsCounter, 0 mSDsluCounter, 2670 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3565 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:36:44,202 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3565 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:36:44,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1237 states. [2024-11-23 22:36:44,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1237 to 1237. [2024-11-23 22:36:44,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1237 states, 962 states have (on average 1.6112266112266111) internal successors, (1550), 997 states have internal predecessors, (1550), 209 states have call successors, (209), 61 states have call predecessors, (209), 65 states have return successors, (230), 203 states have call predecessors, (230), 205 states have call successors, (230) [2024-11-23 22:36:44,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1237 states to 1237 states and 1989 transitions. [2024-11-23 22:36:44,272 INFO L78 Accepts]: Start accepts. Automaton has 1237 states and 1989 transitions. Word has length 182 [2024-11-23 22:36:44,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:36:44,273 INFO L471 AbstractCegarLoop]: Abstraction has 1237 states and 1989 transitions. [2024-11-23 22:36:44,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2024-11-23 22:36:44,273 INFO L276 IsEmpty]: Start isEmpty. Operand 1237 states and 1989 transitions. [2024-11-23 22:36:44,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2024-11-23 22:36:44,277 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:36:44,277 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:36:44,289 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-11-23 22:36:44,478 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-11-23 22:36:44,478 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:36:44,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:36:44,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1290500427, now seen corresponding path program 1 times [2024-11-23 22:36:44,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:36:44,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721958421] [2024-11-23 22:36:44,479 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:44,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:36:44,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:45,396 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2024-11-23 22:36:45,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:36:45,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721958421] [2024-11-23 22:36:45,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721958421] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:36:45,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140399599] [2024-11-23 22:36:45,397 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:45,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:36:45,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:36:45,399 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:36:45,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-23 22:36:45,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:45,951 INFO L256 TraceCheckSpWp]: Trace formula consists of 2429 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-23 22:36:45,956 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:36:46,131 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 32 proven. 88 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-11-23 22:36:46,131 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:36:46,639 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2024-11-23 22:36:46,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140399599] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 22:36:46,639 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 22:36:46,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 14 [2024-11-23 22:36:46,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471451557] [2024-11-23 22:36:46,640 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 22:36:46,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-23 22:36:46,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:36:46,641 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-23 22:36:46,642 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2024-11-23 22:36:46,642 INFO L87 Difference]: Start difference. First operand 1237 states and 1989 transitions. Second operand has 14 states, 14 states have (on average 19.214285714285715) internal successors, (269), 12 states have internal predecessors, (269), 9 states have call successors, (59), 6 states have call predecessors, (59), 8 states have return successors, (58), 11 states have call predecessors, (58), 8 states have call successors, (58) [2024-11-23 22:36:58,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:36:58,038 INFO L93 Difference]: Finished difference Result 8949 states and 15083 transitions. [2024-11-23 22:36:58,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2024-11-23 22:36:58,039 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 19.214285714285715) internal successors, (269), 12 states have internal predecessors, (269), 9 states have call successors, (59), 6 states have call predecessors, (59), 8 states have return successors, (58), 11 states have call predecessors, (58), 8 states have call successors, (58) Word has length 273 [2024-11-23 22:36:58,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:36:58,092 INFO L225 Difference]: With dead ends: 8949 [2024-11-23 22:36:58,092 INFO L226 Difference]: Without dead ends: 7798 [2024-11-23 22:36:58,109 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 634 GetRequests, 564 SyntacticMatches, 2 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1472 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=653, Invalid=4177, Unknown=0, NotChecked=0, Total=4830 [2024-11-23 22:36:58,110 INFO L435 NwaCegarLoop]: 783 mSDtfsCounter, 6714 mSDsluCounter, 5982 mSDsCounter, 0 mSdLazyCounter, 15812 mSolverCounterSat, 2253 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6796 SdHoareTripleChecker+Valid, 6765 SdHoareTripleChecker+Invalid, 18065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2253 IncrementalHoareTripleChecker+Valid, 15812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2024-11-23 22:36:58,111 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6796 Valid, 6765 Invalid, 18065 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2253 Valid, 15812 Invalid, 0 Unknown, 0 Unchecked, 9.9s Time] [2024-11-23 22:36:58,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7798 states. [2024-11-23 22:36:58,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7798 to 6688. [2024-11-23 22:36:58,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6688 states, 5097 states have (on average 1.5866195801451835) internal successors, (8087), 5301 states have internal predecessors, (8087), 1181 states have call successors, (1181), 282 states have call predecessors, (1181), 409 states have return successors, (1736), 1196 states have call predecessors, (1736), 1177 states have call successors, (1736) [2024-11-23 22:36:58,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6688 states to 6688 states and 11004 transitions. [2024-11-23 22:36:58,718 INFO L78 Accepts]: Start accepts. Automaton has 6688 states and 11004 transitions. Word has length 273 [2024-11-23 22:36:58,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:36:58,719 INFO L471 AbstractCegarLoop]: Abstraction has 6688 states and 11004 transitions. [2024-11-23 22:36:58,719 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 19.214285714285715) internal successors, (269), 12 states have internal predecessors, (269), 9 states have call successors, (59), 6 states have call predecessors, (59), 8 states have return successors, (58), 11 states have call predecessors, (58), 8 states have call successors, (58) [2024-11-23 22:36:58,719 INFO L276 IsEmpty]: Start isEmpty. Operand 6688 states and 11004 transitions. [2024-11-23 22:36:58,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2024-11-23 22:36:58,738 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:36:58,739 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:36:58,754 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2024-11-23 22:36:58,939 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-11-23 22:36:58,940 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:36:58,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:36:58,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1599214061, now seen corresponding path program 1 times [2024-11-23 22:36:58,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:36:58,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952841477] [2024-11-23 22:36:58,941 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:58,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:36:58,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:59,316 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2024-11-23 22:36:59,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:36:59,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952841477] [2024-11-23 22:36:59,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952841477] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:36:59,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:36:59,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-23 22:36:59,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496163254] [2024-11-23 22:36:59,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:36:59,318 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 22:36:59,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:36:59,318 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 22:36:59,318 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-23 22:36:59,319 INFO L87 Difference]: Start difference. First operand 6688 states and 11004 transitions. Second operand has 8 states, 7 states have (on average 19.714285714285715) internal successors, (138), 7 states have internal predecessors, (138), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2024-11-23 22:36:59,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:36:59,989 INFO L93 Difference]: Finished difference Result 13299 states and 21916 transitions. [2024-11-23 22:36:59,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 22:36:59,989 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 19.714285714285715) internal successors, (138), 7 states have internal predecessors, (138), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 275 [2024-11-23 22:36:59,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:37:00,036 INFO L225 Difference]: With dead ends: 13299 [2024-11-23 22:37:00,037 INFO L226 Difference]: Without dead ends: 6679 [2024-11-23 22:37:00,062 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-23 22:37:00,063 INFO L435 NwaCegarLoop]: 883 mSDtfsCounter, 41 mSDsluCounter, 5246 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 6129 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 22:37:00,063 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 6129 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 22:37:00,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6679 states. [2024-11-23 22:37:00,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6679 to 6679. [2024-11-23 22:37:00,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6679 states, 5090 states have (on average 1.5860510805500982) internal successors, (8073), 5293 states have internal predecessors, (8073), 1181 states have call successors, (1181), 282 states have call predecessors, (1181), 407 states have return successors, (1732), 1195 states have call predecessors, (1732), 1177 states have call successors, (1732) [2024-11-23 22:37:00,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6679 states to 6679 states and 10986 transitions. [2024-11-23 22:37:00,514 INFO L78 Accepts]: Start accepts. Automaton has 6679 states and 10986 transitions. Word has length 275 [2024-11-23 22:37:00,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:37:00,515 INFO L471 AbstractCegarLoop]: Abstraction has 6679 states and 10986 transitions. [2024-11-23 22:37:00,515 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 19.714285714285715) internal successors, (138), 7 states have internal predecessors, (138), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2024-11-23 22:37:00,515 INFO L276 IsEmpty]: Start isEmpty. Operand 6679 states and 10986 transitions. [2024-11-23 22:37:00,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2024-11-23 22:37:00,533 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:37:00,534 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:37:00,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-11-23 22:37:00,534 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:37:00,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:37:00,534 INFO L85 PathProgramCache]: Analyzing trace with hash 2055611444, now seen corresponding path program 1 times [2024-11-23 22:37:00,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:37:00,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848741115] [2024-11-23 22:37:00,535 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:37:00,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:37:00,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:37:00,824 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2024-11-23 22:37:00,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:37:00,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848741115] [2024-11-23 22:37:00,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848741115] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:37:00,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586231356] [2024-11-23 22:37:00,825 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:37:00,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:37:00,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:37:00,827 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:37:00,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-23 22:37:01,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:37:01,464 INFO L256 TraceCheckSpWp]: Trace formula consists of 2426 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-23 22:37:01,467 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:37:01,507 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-11-23 22:37:01,507 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:37:01,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586231356] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:37:01,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:37:01,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2024-11-23 22:37:01,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736935545] [2024-11-23 22:37:01,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:37:01,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 22:37:01,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:37:01,509 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 22:37:01,509 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-23 22:37:01,510 INFO L87 Difference]: Start difference. First operand 6679 states and 10986 transitions. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2024-11-23 22:37:01,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:37:01,720 INFO L93 Difference]: Finished difference Result 8725 states and 14304 transitions. [2024-11-23 22:37:01,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 22:37:01,721 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 276 [2024-11-23 22:37:01,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:37:01,738 INFO L225 Difference]: With dead ends: 8725 [2024-11-23 22:37:01,738 INFO L226 Difference]: Without dead ends: 2086 [2024-11-23 22:37:01,762 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 275 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-23 22:37:01,762 INFO L435 NwaCegarLoop]: 880 mSDtfsCounter, 1 mSDsluCounter, 1745 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2625 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:37:01,763 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2625 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:37:01,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2086 states. [2024-11-23 22:37:01,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2086 to 2086. [2024-11-23 22:37:01,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2086 states, 1616 states have (on average 1.5853960396039604) internal successors, (2562), 1678 states have internal predecessors, (2562), 340 states have call successors, (340), 98 states have call predecessors, (340), 129 states have return successors, (458), 333 states have call predecessors, (458), 336 states have call successors, (458) [2024-11-23 22:37:01,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2086 states to 2086 states and 3360 transitions. [2024-11-23 22:37:01,909 INFO L78 Accepts]: Start accepts. Automaton has 2086 states and 3360 transitions. Word has length 276 [2024-11-23 22:37:01,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:37:01,910 INFO L471 AbstractCegarLoop]: Abstraction has 2086 states and 3360 transitions. [2024-11-23 22:37:01,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2024-11-23 22:37:01,910 INFO L276 IsEmpty]: Start isEmpty. Operand 2086 states and 3360 transitions. [2024-11-23 22:37:01,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2024-11-23 22:37:01,914 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:37:01,915 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-23 22:37:01,928 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2024-11-23 22:37:02,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-23 22:37:02,116 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:37:02,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:37:02,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1610613596, now seen corresponding path program 1 times [2024-11-23 22:37:02,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:37:02,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650414341] [2024-11-23 22:37:02,117 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:37:02,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:37:02,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:37:02,703 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 2 proven. 39 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2024-11-23 22:37:02,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:37:02,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650414341] [2024-11-23 22:37:02,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650414341] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:37:02,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1884816731] [2024-11-23 22:37:02,703 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:37:02,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:37:02,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:37:02,705 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:37:02,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-23 22:37:03,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:37:03,291 INFO L256 TraceCheckSpWp]: Trace formula consists of 2455 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-23 22:37:03,298 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:37:03,391 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-11-23 22:37:03,391 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:37:03,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1884816731] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:37:03,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:37:03,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2024-11-23 22:37:03,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050251798] [2024-11-23 22:37:03,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:37:03,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 22:37:03,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:37:03,395 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 22:37:03,395 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2024-11-23 22:37:03,395 INFO L87 Difference]: Start difference. First operand 2086 states and 3360 transitions. Second operand has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 6 states have internal predecessors, (144), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) [2024-11-23 22:37:03,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:37:03,590 INFO L93 Difference]: Finished difference Result 4112 states and 6672 transitions. [2024-11-23 22:37:03,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 22:37:03,590 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 6 states have internal predecessors, (144), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) Word has length 281 [2024-11-23 22:37:03,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:37:03,608 INFO L225 Difference]: With dead ends: 4112 [2024-11-23 22:37:03,608 INFO L226 Difference]: Without dead ends: 2110 [2024-11-23 22:37:03,618 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 287 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2024-11-23 22:37:03,618 INFO L435 NwaCegarLoop]: 888 mSDtfsCounter, 0 mSDsluCounter, 4423 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5311 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:37:03,618 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 5311 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:37:03,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2110 states. [2024-11-23 22:37:03,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2110 to 2104. [2024-11-23 22:37:03,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2104 states, 1630 states have (on average 1.5803680981595092) internal successors, (2576), 1694 states have internal predecessors, (2576), 340 states have call successors, (340), 98 states have call predecessors, (340), 133 states have return successors, (462), 335 states have call predecessors, (462), 336 states have call successors, (462) [2024-11-23 22:37:03,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2104 states to 2104 states and 3378 transitions. [2024-11-23 22:37:03,837 INFO L78 Accepts]: Start accepts. Automaton has 2104 states and 3378 transitions. Word has length 281 [2024-11-23 22:37:03,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:37:03,837 INFO L471 AbstractCegarLoop]: Abstraction has 2104 states and 3378 transitions. [2024-11-23 22:37:03,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 6 states have internal predecessors, (144), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) [2024-11-23 22:37:03,837 INFO L276 IsEmpty]: Start isEmpty. Operand 2104 states and 3378 transitions. [2024-11-23 22:37:03,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2024-11-23 22:37:03,842 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:37:03,842 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-23 22:37:03,854 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-11-23 22:37:04,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-23 22:37:04,044 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:37:04,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:37:04,045 INFO L85 PathProgramCache]: Analyzing trace with hash 546578068, now seen corresponding path program 1 times [2024-11-23 22:37:04,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:37:04,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565321808] [2024-11-23 22:37:04,045 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:37:04,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:37:04,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:37:04,372 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-11-23 22:37:04,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:37:04,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565321808] [2024-11-23 22:37:04,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565321808] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:37:04,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835473044] [2024-11-23 22:37:04,373 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:37:04,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:37:04,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:37:04,375 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:37:04,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-23 22:37:04,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:37:05,008 INFO L256 TraceCheckSpWp]: Trace formula consists of 2469 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-23 22:37:05,015 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:37:05,434 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 14 proven. 33 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2024-11-23 22:37:05,434 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:37:06,860 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 16 proven. 36 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2024-11-23 22:37:06,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1835473044] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 22:37:06,861 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 22:37:06,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 13, 14] total 24 [2024-11-23 22:37:06,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944536322] [2024-11-23 22:37:06,861 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 22:37:06,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-23 22:37:06,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:37:06,863 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-23 22:37:06,863 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=481, Unknown=0, NotChecked=0, Total=552 [2024-11-23 22:37:06,864 INFO L87 Difference]: Start difference. First operand 2104 states and 3378 transitions. Second operand has 24 states, 22 states have (on average 13.590909090909092) internal successors, (299), 22 states have internal predecessors, (299), 14 states have call successors, (65), 7 states have call predecessors, (65), 12 states have return successors, (66), 16 states have call predecessors, (66), 13 states have call successors, (66) [2024-11-23 22:37:24,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:37:24,466 INFO L93 Difference]: Finished difference Result 11342 states and 18629 transitions. [2024-11-23 22:37:24,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2024-11-23 22:37:24,467 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 13.590909090909092) internal successors, (299), 22 states have internal predecessors, (299), 14 states have call successors, (65), 7 states have call predecessors, (65), 12 states have return successors, (66), 16 states have call predecessors, (66), 13 states have call successors, (66) Word has length 287 [2024-11-23 22:37:24,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:37:24,509 INFO L225 Difference]: With dead ends: 11342 [2024-11-23 22:37:24,510 INFO L226 Difference]: Without dead ends: 8802 [2024-11-23 22:37:24,533 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 747 GetRequests, 609 SyntacticMatches, 4 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6445 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=2360, Invalid=16000, Unknown=0, NotChecked=0, Total=18360 [2024-11-23 22:37:24,533 INFO L435 NwaCegarLoop]: 817 mSDtfsCounter, 11744 mSDsluCounter, 10336 mSDsCounter, 0 mSdLazyCounter, 21622 mSolverCounterSat, 3925 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11779 SdHoareTripleChecker+Valid, 11153 SdHoareTripleChecker+Invalid, 25547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3925 IncrementalHoareTripleChecker+Valid, 21622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.1s IncrementalHoareTripleChecker+Time [2024-11-23 22:37:24,533 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11779 Valid, 11153 Invalid, 25547 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3925 Valid, 21622 Invalid, 0 Unknown, 0 Unchecked, 14.1s Time] [2024-11-23 22:37:24,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8802 states. [2024-11-23 22:37:25,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8802 to 8410. [2024-11-23 22:37:25,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8410 states, 6308 states have (on average 1.544705136334813) internal successors, (9744), 6620 states have internal predecessors, (9744), 1539 states have call successors, (1539), 423 states have call predecessors, (1539), 562 states have return successors, (2141), 1558 states have call predecessors, (2141), 1535 states have call successors, (2141) [2024-11-23 22:37:25,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8410 states to 8410 states and 13424 transitions. [2024-11-23 22:37:25,163 INFO L78 Accepts]: Start accepts. Automaton has 8410 states and 13424 transitions. Word has length 287 [2024-11-23 22:37:25,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:37:25,164 INFO L471 AbstractCegarLoop]: Abstraction has 8410 states and 13424 transitions. [2024-11-23 22:37:25,164 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 13.590909090909092) internal successors, (299), 22 states have internal predecessors, (299), 14 states have call successors, (65), 7 states have call predecessors, (65), 12 states have return successors, (66), 16 states have call predecessors, (66), 13 states have call successors, (66) [2024-11-23 22:37:25,164 INFO L276 IsEmpty]: Start isEmpty. Operand 8410 states and 13424 transitions. [2024-11-23 22:37:25,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2024-11-23 22:37:25,166 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:37:25,166 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 6, 5, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:37:25,178 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2024-11-23 22:37:25,367 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-23 22:37:25,367 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:37:25,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:37:25,367 INFO L85 PathProgramCache]: Analyzing trace with hash 170406694, now seen corresponding path program 1 times [2024-11-23 22:37:25,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:37:25,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981614522] [2024-11-23 22:37:25,368 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:37:25,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:37:25,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:37:25,874 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2024-11-23 22:37:25,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:37:25,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981614522] [2024-11-23 22:37:25,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981614522] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:37:25,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1565412298] [2024-11-23 22:37:25,875 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:37:25,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:37:25,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:37:25,878 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:37:25,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-11-23 22:37:26,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:37:26,400 INFO L256 TraceCheckSpWp]: Trace formula consists of 2100 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-23 22:37:26,404 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:37:26,747 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 78 proven. 9 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-23 22:37:26,747 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:37:27,519 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 15 proven. 9 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2024-11-23 22:37:27,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1565412298] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 22:37:27,519 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 22:37:27,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 8] total 23 [2024-11-23 22:37:27,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707133034] [2024-11-23 22:37:27,520 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 22:37:27,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-23 22:37:27,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:37:27,522 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-23 22:37:27,524 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2024-11-23 22:37:27,524 INFO L87 Difference]: Start difference. First operand 8410 states and 13424 transitions. Second operand has 23 states, 23 states have (on average 13.608695652173912) internal successors, (313), 19 states have internal predecessors, (313), 11 states have call successors, (62), 6 states have call predecessors, (62), 14 states have return successors, (63), 15 states have call predecessors, (63), 10 states have call successors, (63) [2024-11-23 22:37:36,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:37:36,768 INFO L93 Difference]: Finished difference Result 27250 states and 44256 transitions. [2024-11-23 22:37:36,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-23 22:37:36,768 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 13.608695652173912) internal successors, (313), 19 states have internal predecessors, (313), 11 states have call successors, (62), 6 states have call predecessors, (62), 14 states have return successors, (63), 15 states have call predecessors, (63), 10 states have call successors, (63) Word has length 236 [2024-11-23 22:37:36,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:37:36,896 INFO L225 Difference]: With dead ends: 27250 [2024-11-23 22:37:36,896 INFO L226 Difference]: Without dead ends: 18927 [2024-11-23 22:37:36,946 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 518 GetRequests, 473 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=327, Invalid=1653, Unknown=0, NotChecked=0, Total=1980 [2024-11-23 22:37:36,947 INFO L435 NwaCegarLoop]: 756 mSDtfsCounter, 6154 mSDsluCounter, 7339 mSDsCounter, 0 mSdLazyCounter, 15279 mSolverCounterSat, 2006 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6154 SdHoareTripleChecker+Valid, 8095 SdHoareTripleChecker+Invalid, 17285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2006 IncrementalHoareTripleChecker+Valid, 15279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2024-11-23 22:37:36,947 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6154 Valid, 8095 Invalid, 17285 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2006 Valid, 15279 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2024-11-23 22:37:36,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18927 states. [2024-11-23 22:37:38,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18927 to 18523. [2024-11-23 22:37:38,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18523 states, 13691 states have (on average 1.5392593674676796) internal successors, (21074), 14385 states have internal predecessors, (21074), 3688 states have call successors, (3688), 830 states have call predecessors, (3688), 1143 states have return successors, (5226), 3771 states have call predecessors, (5226), 3684 states have call successors, (5226) [2024-11-23 22:37:38,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18523 states to 18523 states and 29988 transitions. [2024-11-23 22:37:38,722 INFO L78 Accepts]: Start accepts. Automaton has 18523 states and 29988 transitions. Word has length 236 [2024-11-23 22:37:38,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:37:38,723 INFO L471 AbstractCegarLoop]: Abstraction has 18523 states and 29988 transitions. [2024-11-23 22:37:38,723 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 13.608695652173912) internal successors, (313), 19 states have internal predecessors, (313), 11 states have call successors, (62), 6 states have call predecessors, (62), 14 states have return successors, (63), 15 states have call predecessors, (63), 10 states have call successors, (63) [2024-11-23 22:37:38,723 INFO L276 IsEmpty]: Start isEmpty. Operand 18523 states and 29988 transitions. [2024-11-23 22:37:38,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2024-11-23 22:37:38,731 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:37:38,732 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:37:38,745 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2024-11-23 22:37:38,936 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be52d641-d581-415b-98e2-a59ae01b03a0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-23 22:37:38,937 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:37:38,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:37:38,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1863419824, now seen corresponding path program 1 times [2024-11-23 22:37:38,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:37:38,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848167736] [2024-11-23 22:37:38,938 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:37:38,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:37:39,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:37:39,202 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2024-11-23 22:37:39,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:37:39,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848167736] [2024-11-23 22:37:39,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848167736] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:37:39,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:37:39,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 22:37:39,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037051837] [2024-11-23 22:37:39,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:37:39,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 22:37:39,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:37:39,204 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 22:37:39,204 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 22:37:39,204 INFO L87 Difference]: Start difference. First operand 18523 states and 29988 transitions. Second operand has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 6 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (25), 6 states have call predecessors, (25), 5 states have call successors, (25) [2024-11-23 22:37:45,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:37:45,958 INFO L93 Difference]: Finished difference Result 65459 states and 110356 transitions. [2024-11-23 22:37:45,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 22:37:45,958 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 6 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (25), 6 states have call predecessors, (25), 5 states have call successors, (25) Word has length 243 [2024-11-23 22:37:45,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:37:46,219 INFO L225 Difference]: With dead ends: 65459 [2024-11-23 22:37:46,219 INFO L226 Difference]: Without dead ends: 47073 [2024-11-23 22:37:46,354 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-23 22:37:46,355 INFO L435 NwaCegarLoop]: 634 mSDtfsCounter, 3243 mSDsluCounter, 1000 mSDsCounter, 0 mSdLazyCounter, 3492 mSolverCounterSat, 873 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3283 SdHoareTripleChecker+Valid, 1634 SdHoareTripleChecker+Invalid, 4365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 873 IncrementalHoareTripleChecker+Valid, 3492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-23 22:37:46,355 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3283 Valid, 1634 Invalid, 4365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [873 Valid, 3492 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-23 22:37:46,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47073 states. [2024-11-23 22:37:50,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47073 to 40269. [2024-11-23 22:37:50,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40269 states, 29058 states have (on average 1.5288044600454265) internal successors, (44424), 30711 states have internal predecessors, (44424), 8955 states have call successors, (8955), 1570 states have call predecessors, (8955), 2255 states have return successors, (12412), 9155 states have call predecessors, (12412), 8951 states have call successors, (12412) [2024-11-23 22:37:50,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40269 states to 40269 states and 65791 transitions. [2024-11-23 22:37:50,638 INFO L78 Accepts]: Start accepts. Automaton has 40269 states and 65791 transitions. Word has length 243 [2024-11-23 22:37:50,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:37:50,638 INFO L471 AbstractCegarLoop]: Abstraction has 40269 states and 65791 transitions. [2024-11-23 22:37:50,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 6 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (25), 6 states have call predecessors, (25), 5 states have call successors, (25) [2024-11-23 22:37:50,638 INFO L276 IsEmpty]: Start isEmpty. Operand 40269 states and 65791 transitions. [2024-11-23 22:37:50,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2024-11-23 22:37:50,654 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:37:50,654 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:37:50,654 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-11-23 22:37:50,654 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:37:50,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:37:50,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1835201091, now seen corresponding path program 1 times [2024-11-23 22:37:50,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:37:50,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470150836] [2024-11-23 22:37:50,655 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:37:50,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:37:50,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:37:50,890 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2024-11-23 22:37:50,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:37:50,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470150836] [2024-11-23 22:37:50,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470150836] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:37:50,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:37:50,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 22:37:50,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830302545] [2024-11-23 22:37:50,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:37:50,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 22:37:50,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:37:50,892 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 22:37:50,892 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 22:37:50,892 INFO L87 Difference]: Start difference. First operand 40269 states and 65791 transitions. Second operand has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 6 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (25), 6 states have call predecessors, (25), 5 states have call successors, (25) [2024-11-23 22:38:03,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:38:03,769 INFO L93 Difference]: Finished difference Result 154245 states and 263053 transitions. [2024-11-23 22:38:03,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 22:38:03,769 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 6 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (25), 6 states have call predecessors, (25), 5 states have call successors, (25) Word has length 244 [2024-11-23 22:38:03,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:38:04,540 INFO L225 Difference]: With dead ends: 154245 [2024-11-23 22:38:04,540 INFO L226 Difference]: Without dead ends: 114122