./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec13_product22.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec13_product22.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f89a8ce65f650dd979d04d2db9dc53ba483e2a2b64be3f70ae15b036e4b11b5a --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-01 13:20:54,541 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-01 13:20:54,595 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-01 13:20:54,600 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-01 13:20:54,600 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-01 13:20:54,621 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-01 13:20:54,622 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-01 13:20:54,622 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-01 13:20:54,622 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-01 13:20:54,622 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-01 13:20:54,623 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-01 13:20:54,623 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-01 13:20:54,623 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-01 13:20:54,623 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-01 13:20:54,623 INFO L153 SettingsManager]: * Use SBE=true [2024-12-01 13:20:54,623 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-01 13:20:54,623 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-01 13:20:54,624 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-01 13:20:54,624 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-01 13:20:54,624 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-01 13:20:54,624 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-01 13:20:54,624 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-01 13:20:54,624 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-01 13:20:54,624 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-01 13:20:54,624 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-01 13:20:54,624 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-01 13:20:54,624 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-01 13:20:54,624 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-01 13:20:54,624 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-01 13:20:54,625 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-01 13:20:54,625 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-01 13:20:54,625 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-01 13:20:54,625 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-01 13:20:54,625 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-01 13:20:54,625 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-01 13:20:54,625 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-01 13:20:54,625 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-01 13:20:54,625 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-01 13:20:54,625 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-01 13:20:54,625 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-01 13:20:54,626 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-01 13:20:54,626 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-01 13:20:54,626 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-01 13:20:54,626 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-01 13:20:54,626 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-01 13:20:54,626 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-01 13:20:54,626 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-01 13:20:54,626 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-01 13:20:54,626 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_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f89a8ce65f650dd979d04d2db9dc53ba483e2a2b64be3f70ae15b036e4b11b5a [2024-12-01 13:20:54,848 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-01 13:20:54,856 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-01 13:20:54,858 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-01 13:20:54,859 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-01 13:20:54,860 INFO L274 PluginConnector]: CDTParser initialized [2024-12-01 13:20:54,861 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/product-lines/elevator_spec13_product22.cil.c [2024-12-01 13:20:57,516 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/data/fdbcf17cd/8dfa131968cb49d58981ea3ded765a04/FLAGee29cdff8 [2024-12-01 13:20:57,826 INFO L384 CDTParser]: Found 1 translation units. [2024-12-01 13:20:57,827 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/sv-benchmarks/c/product-lines/elevator_spec13_product22.cil.c [2024-12-01 13:20:57,846 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/data/fdbcf17cd/8dfa131968cb49d58981ea3ded765a04/FLAGee29cdff8 [2024-12-01 13:20:58,070 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/data/fdbcf17cd/8dfa131968cb49d58981ea3ded765a04 [2024-12-01 13:20:58,072 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-01 13:20:58,074 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-01 13:20:58,075 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-01 13:20:58,075 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-01 13:20:58,079 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-01 13:20:58,080 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 01:20:58" (1/1) ... [2024-12-01 13:20:58,081 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e02459d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:20:58, skipping insertion in model container [2024-12-01 13:20:58,081 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 01:20:58" (1/1) ... [2024-12-01 13:20:58,124 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-01 13:20:58,278 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_161526a5-3698-49c2-a32c-8a2771591394/sv-benchmarks/c/product-lines/elevator_spec13_product22.cil.c[1811,1824] [2024-12-01 13:20:58,539 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-01 13:20:58,551 INFO L200 MainTranslator]: Completed pre-run [2024-12-01 13:20:58,559 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [48] [2024-12-01 13:20:58,560 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [68] [2024-12-01 13:20:58,560 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [77] [2024-12-01 13:20:58,560 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [443] [2024-12-01 13:20:58,560 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [2020] [2024-12-01 13:20:58,560 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [2682] [2024-12-01 13:20:58,560 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [2775] [2024-12-01 13:20:58,561 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [2893] [2024-12-01 13:20:58,561 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [2931] [2024-12-01 13:20:58,561 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification13_spec.i","") [3279] [2024-12-01 13:20:58,564 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_161526a5-3698-49c2-a32c-8a2771591394/sv-benchmarks/c/product-lines/elevator_spec13_product22.cil.c[1811,1824] [2024-12-01 13:20:58,648 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-01 13:20:58,670 INFO L204 MainTranslator]: Completed translation [2024-12-01 13:20:58,671 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:20:58 WrapperNode [2024-12-01 13:20:58,671 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-01 13:20:58,672 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-01 13:20:58,672 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-01 13:20:58,672 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-01 13:20:58,678 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:20:58" (1/1) ... [2024-12-01 13:20:58,695 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:20:58" (1/1) ... [2024-12-01 13:20:58,726 INFO L138 Inliner]: procedures = 92, calls = 344, calls flagged for inlining = 28, calls inlined = 24, statements flattened = 837 [2024-12-01 13:20:58,726 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-01 13:20:58,727 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-01 13:20:58,727 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-01 13:20:58,727 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-01 13:20:58,736 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:20:58" (1/1) ... [2024-12-01 13:20:58,736 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:20:58" (1/1) ... [2024-12-01 13:20:58,742 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:20:58" (1/1) ... [2024-12-01 13:20:58,764 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]. [2024-12-01 13:20:58,765 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:20:58" (1/1) ... [2024-12-01 13:20:58,765 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:20:58" (1/1) ... [2024-12-01 13:20:58,781 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:20:58" (1/1) ... [2024-12-01 13:20:58,784 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:20:58" (1/1) ... [2024-12-01 13:20:58,796 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:20:58" (1/1) ... [2024-12-01 13:20:58,801 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:20:58" (1/1) ... [2024-12-01 13:20:58,805 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:20:58" (1/1) ... [2024-12-01 13:20:58,814 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-01 13:20:58,815 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-01 13:20:58,815 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-01 13:20:58,815 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-01 13:20:58,816 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:20:58" (1/1) ... [2024-12-01 13:20:58,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-01 13:20:58,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 13:20:58,860 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-01 13:20:58,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-01 13:20:58,886 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2024-12-01 13:20:58,886 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2024-12-01 13:20:58,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-01 13:20:58,886 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2024-12-01 13:20:58,886 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2024-12-01 13:20:58,886 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2024-12-01 13:20:58,887 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2024-12-01 13:20:58,887 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2024-12-01 13:20:58,887 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2024-12-01 13:20:58,887 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-12-01 13:20:58,887 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-12-01 13:20:58,887 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-12-01 13:20:58,887 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-12-01 13:20:58,887 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2024-12-01 13:20:58,887 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2024-12-01 13:20:58,887 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-12-01 13:20:58,887 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-12-01 13:20:58,887 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-12-01 13:20:58,887 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-12-01 13:20:58,887 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-12-01 13:20:58,887 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-12-01 13:20:58,888 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-12-01 13:20:58,888 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-12-01 13:20:58,888 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-12-01 13:20:58,888 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-12-01 13:20:58,888 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-12-01 13:20:58,888 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-12-01 13:20:58,888 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-12-01 13:20:58,888 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-12-01 13:20:58,888 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-12-01 13:20:58,888 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-12-01 13:20:58,888 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-12-01 13:20:58,888 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-12-01 13:20:58,888 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-12-01 13:20:58,888 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-12-01 13:20:58,888 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-12-01 13:20:58,888 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-12-01 13:20:58,888 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-12-01 13:20:58,888 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-12-01 13:20:58,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-01 13:20:58,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-01 13:20:58,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-12-01 13:20:58,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-12-01 13:20:58,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-12-01 13:20:58,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-12-01 13:20:58,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-12-01 13:20:58,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-12-01 13:20:58,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-12-01 13:20:58,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-12-01 13:20:58,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-12-01 13:20:58,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-12-01 13:20:58,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-12-01 13:20:58,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-12-01 13:20:58,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-12-01 13:20:58,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-12-01 13:20:58,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-12-01 13:20:58,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-12-01 13:20:58,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2024-12-01 13:20:58,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2024-12-01 13:20:58,890 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2024-12-01 13:20:58,890 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2024-12-01 13:20:58,890 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-12-01 13:20:58,890 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-12-01 13:20:58,890 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-12-01 13:20:58,890 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-12-01 13:20:58,890 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-12-01 13:20:58,890 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-12-01 13:20:58,890 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull [2024-12-01 13:20:58,890 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull [2024-12-01 13:20:58,890 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2024-12-01 13:20:58,890 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2024-12-01 13:20:58,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-01 13:20:58,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-01 13:20:58,890 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-12-01 13:20:58,890 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-12-01 13:20:59,046 INFO L234 CfgBuilder]: Building ICFG [2024-12-01 13:20:59,048 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-01 13:21:00,098 INFO L? ?]: Removed 464 outVars from TransFormulas that were not future-live. [2024-12-01 13:21:00,098 INFO L283 CfgBuilder]: Performing block encoding [2024-12-01 13:21:00,118 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-01 13:21:00,119 INFO L312 CfgBuilder]: Removed 8 assume(true) statements. [2024-12-01 13:21:00,119 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 01:21:00 BoogieIcfgContainer [2024-12-01 13:21:00,119 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-01 13:21:00,121 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-01 13:21:00,121 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-01 13:21:00,125 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-01 13:21:00,125 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 01:20:58" (1/3) ... [2024-12-01 13:21:00,126 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bfc7f5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 01:21:00, skipping insertion in model container [2024-12-01 13:21:00,126 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:20:58" (2/3) ... [2024-12-01 13:21:00,126 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bfc7f5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 01:21:00, skipping insertion in model container [2024-12-01 13:21:00,126 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 01:21:00" (3/3) ... [2024-12-01 13:21:00,127 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product22.cil.c [2024-12-01 13:21:00,137 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-01 13:21:00,139 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec13_product22.cil.c that has 27 procedures, 596 locations, 1 initial locations, 4 loop locations, and 1 error locations. [2024-12-01 13:21:00,195 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-01 13:21:00,205 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;@172063a0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-01 13:21:00,205 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-01 13:21:00,210 INFO L276 IsEmpty]: Start isEmpty. Operand has 596 states, 466 states have (on average 1.6952789699570816) internal successors, (790), 486 states have internal predecessors, (790), 102 states have call successors, (102), 26 states have call predecessors, (102), 26 states have return successors, (102), 98 states have call predecessors, (102), 102 states have call successors, (102) [2024-12-01 13:21:00,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-12-01 13:21:00,227 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:21:00,227 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:21:00,228 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:21:00,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:21:00,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1305719938, now seen corresponding path program 1 times [2024-12-01 13:21:00,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:21:00,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006834136] [2024-12-01 13:21:00,238 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:21:00,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:21:00,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:21:00,745 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-12-01 13:21:00,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:21:00,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006834136] [2024-12-01 13:21:00,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006834136] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 13:21:00,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [194551587] [2024-12-01 13:21:00,747 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:21:00,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:21:00,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 13:21:00,750 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 13:21:00,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-01 13:21:01,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:21:01,090 INFO L256 TraceCheckSpWp]: Trace formula consists of 1263 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-01 13:21:01,096 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 13:21:01,111 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-12-01 13:21:01,112 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 13:21:01,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [194551587] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:21:01,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 13:21:01,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 6 [2024-12-01 13:21:01,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954135936] [2024-12-01 13:21:01,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:21:01,118 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-01 13:21:01,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:21:01,137 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-01 13:21:01,138 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-01 13:21:01,141 INFO L87 Difference]: Start difference. First operand has 596 states, 466 states have (on average 1.6952789699570816) internal successors, (790), 486 states have internal predecessors, (790), 102 states have call successors, (102), 26 states have call predecessors, (102), 26 states have return successors, (102), 98 states have call predecessors, (102), 102 states have call successors, (102) Second operand has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-12-01 13:21:01,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:21:01,228 INFO L93 Difference]: Finished difference Result 1170 states and 1971 transitions. [2024-12-01 13:21:01,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-01 13:21:01,230 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 83 [2024-12-01 13:21:01,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:21:01,245 INFO L225 Difference]: With dead ends: 1170 [2024-12-01 13:21:01,246 INFO L226 Difference]: Without dead ends: 586 [2024-12-01 13:21:01,253 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-01 13:21:01,255 INFO L435 NwaCegarLoop]: 982 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, 982 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 13:21:01,256 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 982 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 13:21:01,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2024-12-01 13:21:01,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 586. [2024-12-01 13:21:01,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 586 states, 459 states have (on average 1.6775599128540306) internal successors, (770), 477 states have internal predecessors, (770), 102 states have call successors, (102), 26 states have call predecessors, (102), 24 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2024-12-01 13:21:01,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 971 transitions. [2024-12-01 13:21:01,332 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 971 transitions. Word has length 83 [2024-12-01 13:21:01,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:21:01,334 INFO L471 AbstractCegarLoop]: Abstraction has 586 states and 971 transitions. [2024-12-01 13:21:01,334 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-12-01 13:21:01,334 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 971 transitions. [2024-12-01 13:21:01,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-12-01 13:21:01,339 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:21:01,339 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] [2024-12-01 13:21:01,350 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-01 13:21:01,544 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:21:01,544 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:21:01,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:21:01,545 INFO L85 PathProgramCache]: Analyzing trace with hash -2139893227, now seen corresponding path program 1 times [2024-12-01 13:21:01,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:21:01,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455134783] [2024-12-01 13:21:01,545 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:21:01,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:21:01,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:21:01,850 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-12-01 13:21:01,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:21:01,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455134783] [2024-12-01 13:21:01,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455134783] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 13:21:01,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [511135597] [2024-12-01 13:21:01,851 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:21:01,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:21:01,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 13:21:01,853 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 13:21:01,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-01 13:21:02,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:21:02,238 INFO L256 TraceCheckSpWp]: Trace formula consists of 1507 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-01 13:21:02,245 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 13:21:02,293 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-12-01 13:21:02,293 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 13:21:02,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [511135597] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:21:02,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 13:21:02,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-12-01 13:21:02,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489567122] [2024-12-01 13:21:02,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:21:02,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-01 13:21:02,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:21:02,296 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-01 13:21:02,296 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-01 13:21:02,296 INFO L87 Difference]: Start difference. First operand 586 states and 971 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2024-12-01 13:21:02,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:21:02,416 INFO L93 Difference]: Finished difference Result 1173 states and 1950 transitions. [2024-12-01 13:21:02,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-01 13:21:02,416 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 99 [2024-12-01 13:21:02,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:21:02,423 INFO L225 Difference]: With dead ends: 1173 [2024-12-01 13:21:02,423 INFO L226 Difference]: Without dead ends: 595 [2024-12-01 13:21:02,426 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-12-01 13:21:02,426 INFO L435 NwaCegarLoop]: 958 mSDtfsCounter, 17 mSDsluCounter, 1908 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 2866 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 13:21:02,427 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 2866 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 13:21:02,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2024-12-01 13:21:02,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 595. [2024-12-01 13:21:02,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 595 states, 467 states have (on average 1.6788008565310493) internal successors, (784), 485 states have internal predecessors, (784), 102 states have call successors, (102), 27 states have call predecessors, (102), 25 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2024-12-01 13:21:02,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 985 transitions. [2024-12-01 13:21:02,462 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 985 transitions. Word has length 99 [2024-12-01 13:21:02,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:21:02,462 INFO L471 AbstractCegarLoop]: Abstraction has 595 states and 985 transitions. [2024-12-01 13:21:02,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2024-12-01 13:21:02,462 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 985 transitions. [2024-12-01 13:21:02,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-12-01 13:21:02,466 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:21:02,466 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:21:02,473 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-01 13:21:02,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:21:02,666 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:21:02,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:21:02,667 INFO L85 PathProgramCache]: Analyzing trace with hash 202058560, now seen corresponding path program 1 times [2024-12-01 13:21:02,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:21:02,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417474815] [2024-12-01 13:21:02,667 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:21:02,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:21:02,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:21:02,940 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-12-01 13:21:02,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:21:02,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417474815] [2024-12-01 13:21:02,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417474815] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 13:21:02,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629098427] [2024-12-01 13:21:02,941 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:21:02,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:21:02,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 13:21:02,943 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 13:21:02,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-01 13:21:03,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:21:03,239 INFO L256 TraceCheckSpWp]: Trace formula consists of 1265 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-01 13:21:03,244 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 13:21:03,278 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-12-01 13:21:03,278 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 13:21:03,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1629098427] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:21:03,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 13:21:03,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2024-12-01 13:21:03,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110075275] [2024-12-01 13:21:03,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:21:03,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-01 13:21:03,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:21:03,280 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-01 13:21:03,280 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-01 13:21:03,281 INFO L87 Difference]: Start difference. First operand 595 states and 985 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-12-01 13:21:03,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:21:03,545 INFO L93 Difference]: Finished difference Result 1243 states and 2074 transitions. [2024-12-01 13:21:03,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-01 13:21:03,546 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 85 [2024-12-01 13:21:03,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:21:03,554 INFO L225 Difference]: With dead ends: 1243 [2024-12-01 13:21:03,554 INFO L226 Difference]: Without dead ends: 658 [2024-12-01 13:21:03,558 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-12-01 13:21:03,559 INFO L435 NwaCegarLoop]: 946 mSDtfsCounter, 122 mSDsluCounter, 1815 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 2761 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-01 13:21:03,559 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 2761 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-01 13:21:03,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2024-12-01 13:21:03,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 640. [2024-12-01 13:21:03,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 511 states have (on average 1.6986301369863013) internal successors, (868), 529 states have internal predecessors, (868), 102 states have call successors, (102), 28 states have call predecessors, (102), 26 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2024-12-01 13:21:03,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 1069 transitions. [2024-12-01 13:21:03,600 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 1069 transitions. Word has length 85 [2024-12-01 13:21:03,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:21:03,600 INFO L471 AbstractCegarLoop]: Abstraction has 640 states and 1069 transitions. [2024-12-01 13:21:03,601 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-12-01 13:21:03,601 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 1069 transitions. [2024-12-01 13:21:03,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-12-01 13:21:03,604 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:21:03,604 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:21:03,615 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-01 13:21:03,805 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:21:03,805 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:21:03,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:21:03,805 INFO L85 PathProgramCache]: Analyzing trace with hash 595940684, now seen corresponding path program 1 times [2024-12-01 13:21:03,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:21:03,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410211946] [2024-12-01 13:21:03,806 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:21:03,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:21:03,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:21:04,025 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-12-01 13:21:04,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:21:04,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410211946] [2024-12-01 13:21:04,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410211946] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 13:21:04,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [517404199] [2024-12-01 13:21:04,026 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:21:04,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:21:04,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 13:21:04,027 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 13:21:04,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-01 13:21:04,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:21:04,299 INFO L256 TraceCheckSpWp]: Trace formula consists of 1267 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-12-01 13:21:04,301 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 13:21:04,365 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-12-01 13:21:04,365 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 13:21:04,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [517404199] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:21:04,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 13:21:04,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2024-12-01 13:21:04,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727367679] [2024-12-01 13:21:04,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:21:04,366 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-01 13:21:04,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:21:04,367 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-01 13:21:04,367 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-12-01 13:21:04,368 INFO L87 Difference]: Start difference. First operand 640 states and 1069 transitions. Second operand has 7 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2024-12-01 13:21:04,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:21:04,480 INFO L93 Difference]: Finished difference Result 1295 states and 2165 transitions. [2024-12-01 13:21:04,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-01 13:21:04,481 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 87 [2024-12-01 13:21:04,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:21:04,486 INFO L225 Difference]: With dead ends: 1295 [2024-12-01 13:21:04,486 INFO L226 Difference]: Without dead ends: 665 [2024-12-01 13:21:04,488 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-12-01 13:21:04,488 INFO L435 NwaCegarLoop]: 958 mSDtfsCounter, 89 mSDsluCounter, 4698 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 5656 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 13:21:04,489 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 5656 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 13:21:04,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2024-12-01 13:21:04,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 653. [2024-12-01 13:21:04,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 653 states, 521 states have (on average 1.6948176583493282) internal successors, (883), 541 states have internal predecessors, (883), 103 states have call successors, (103), 28 states have call predecessors, (103), 28 states have return successors, (104), 97 states have call predecessors, (104), 100 states have call successors, (104) [2024-12-01 13:21:04,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 1090 transitions. [2024-12-01 13:21:04,512 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 1090 transitions. Word has length 87 [2024-12-01 13:21:04,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:21:04,513 INFO L471 AbstractCegarLoop]: Abstraction has 653 states and 1090 transitions. [2024-12-01 13:21:04,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2024-12-01 13:21:04,513 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 1090 transitions. [2024-12-01 13:21:04,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-12-01 13:21:04,515 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:21:04,515 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] [2024-12-01 13:21:04,523 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-01 13:21:04,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:21:04,716 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:21:04,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:21:04,716 INFO L85 PathProgramCache]: Analyzing trace with hash -870342570, now seen corresponding path program 1 times [2024-12-01 13:21:04,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:21:04,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786038174] [2024-12-01 13:21:04,716 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:21:04,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:21:04,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:21:04,918 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-12-01 13:21:04,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:21:04,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786038174] [2024-12-01 13:21:04,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786038174] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 13:21:04,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938715455] [2024-12-01 13:21:04,918 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:21:04,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:21:04,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 13:21:04,920 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 13:21:04,921 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-01 13:21:05,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:21:05,223 INFO L256 TraceCheckSpWp]: Trace formula consists of 1512 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-12-01 13:21:05,227 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 13:21:05,298 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-12-01 13:21:05,298 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 13:21:05,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1938715455] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:21:05,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 13:21:05,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2024-12-01 13:21:05,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827219894] [2024-12-01 13:21:05,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:21:05,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-01 13:21:05,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:21:05,299 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-01 13:21:05,300 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-12-01 13:21:05,300 INFO L87 Difference]: Start difference. First operand 653 states and 1090 transitions. Second operand has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-12-01 13:21:05,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:21:05,421 INFO L93 Difference]: Finished difference Result 1315 states and 2196 transitions. [2024-12-01 13:21:05,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-01 13:21:05,422 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 104 [2024-12-01 13:21:05,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:21:05,427 INFO L225 Difference]: With dead ends: 1315 [2024-12-01 13:21:05,427 INFO L226 Difference]: Without dead ends: 674 [2024-12-01 13:21:05,431 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-12-01 13:21:05,431 INFO L435 NwaCegarLoop]: 958 mSDtfsCounter, 100 mSDsluCounter, 4686 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 5644 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 13:21:05,432 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 5644 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 13:21:05,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2024-12-01 13:21:05,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 653. [2024-12-01 13:21:05,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 653 states, 521 states have (on average 1.6948176583493282) internal successors, (883), 541 states have internal predecessors, (883), 103 states have call successors, (103), 28 states have call predecessors, (103), 28 states have return successors, (104), 97 states have call predecessors, (104), 100 states have call successors, (104) [2024-12-01 13:21:05,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 1090 transitions. [2024-12-01 13:21:05,462 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 1090 transitions. Word has length 104 [2024-12-01 13:21:05,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:21:05,462 INFO L471 AbstractCegarLoop]: Abstraction has 653 states and 1090 transitions. [2024-12-01 13:21:05,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-12-01 13:21:05,462 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 1090 transitions. [2024-12-01 13:21:05,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-12-01 13:21:05,465 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:21:05,465 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] [2024-12-01 13:21:05,475 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-01 13:21:05,665 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:21:05,665 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:21:05,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:21:05,666 INFO L85 PathProgramCache]: Analyzing trace with hash -322872208, now seen corresponding path program 1 times [2024-12-01 13:21:05,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:21:05,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135501332] [2024-12-01 13:21:05,666 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:21:05,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:21:05,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:21:05,751 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-12-01 13:21:05,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:21:05,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135501332] [2024-12-01 13:21:05,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135501332] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 13:21:05,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426068711] [2024-12-01 13:21:05,752 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:21:05,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:21:05,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 13:21:05,754 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 13:21:05,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-01 13:21:06,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:21:06,061 INFO L256 TraceCheckSpWp]: Trace formula consists of 1512 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-01 13:21:06,064 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 13:21:06,090 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-12-01 13:21:06,090 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 13:21:06,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1426068711] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:21:06,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 13:21:06,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-12-01 13:21:06,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075651760] [2024-12-01 13:21:06,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:21:06,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-01 13:21:06,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:21:06,092 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-01 13:21:06,092 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-01 13:21:06,092 INFO L87 Difference]: Start difference. First operand 653 states and 1090 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2024-12-01 13:21:06,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:21:06,163 INFO L93 Difference]: Finished difference Result 1309 states and 2186 transitions. [2024-12-01 13:21:06,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-01 13:21:06,164 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 104 [2024-12-01 13:21:06,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:21:06,167 INFO L225 Difference]: With dead ends: 1309 [2024-12-01 13:21:06,167 INFO L226 Difference]: Without dead ends: 664 [2024-12-01 13:21:06,169 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-12-01 13:21:06,170 INFO L435 NwaCegarLoop]: 959 mSDtfsCounter, 12 mSDsluCounter, 1909 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2868 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 13:21:06,170 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2868 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 13:21:06,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2024-12-01 13:21:06,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 662. [2024-12-01 13:21:06,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 529 states have (on average 1.6862003780718335) internal successors, (892), 549 states have internal predecessors, (892), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 97 states have call predecessors, (103), 100 states have call successors, (103) [2024-12-01 13:21:06,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 1098 transitions. [2024-12-01 13:21:06,189 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 1098 transitions. Word has length 104 [2024-12-01 13:21:06,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:21:06,189 INFO L471 AbstractCegarLoop]: Abstraction has 662 states and 1098 transitions. [2024-12-01 13:21:06,189 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2024-12-01 13:21:06,189 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 1098 transitions. [2024-12-01 13:21:06,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-12-01 13:21:06,191 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:21:06,191 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:21:06,202 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-12-01 13:21:06,391 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-12-01 13:21:06,392 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:21:06,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:21:06,392 INFO L85 PathProgramCache]: Analyzing trace with hash -313595440, now seen corresponding path program 1 times [2024-12-01 13:21:06,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:21:06,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809001835] [2024-12-01 13:21:06,392 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:21:06,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:21:06,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:21:06,541 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-12-01 13:21:06,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:21:06,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809001835] [2024-12-01 13:21:06,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809001835] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 13:21:06,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [311430099] [2024-12-01 13:21:06,542 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:21:06,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:21:06,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 13:21:06,544 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 13:21:06,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-01 13:21:06,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:21:06,809 INFO L256 TraceCheckSpWp]: Trace formula consists of 1269 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-12-01 13:21:06,812 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 13:21:06,876 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-12-01 13:21:06,876 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 13:21:06,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [311430099] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:21:06,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 13:21:06,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2024-12-01 13:21:06,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883816353] [2024-12-01 13:21:06,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:21:06,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-01 13:21:06,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:21:06,878 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-01 13:21:06,878 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-12-01 13:21:06,878 INFO L87 Difference]: Start difference. First operand 662 states and 1098 transitions. Second operand has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2024-12-01 13:21:06,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:21:06,990 INFO L93 Difference]: Finished difference Result 1324 states and 2199 transitions. [2024-12-01 13:21:06,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-01 13:21:06,990 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 89 [2024-12-01 13:21:06,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:21:06,996 INFO L225 Difference]: With dead ends: 1324 [2024-12-01 13:21:06,996 INFO L226 Difference]: Without dead ends: 685 [2024-12-01 13:21:06,999 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-12-01 13:21:07,000 INFO L435 NwaCegarLoop]: 958 mSDtfsCounter, 111 mSDsluCounter, 4674 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 5632 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 13:21:07,000 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 5632 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 13:21:07,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2024-12-01 13:21:07,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 662. [2024-12-01 13:21:07,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 529 states have (on average 1.6862003780718335) internal successors, (892), 549 states have internal predecessors, (892), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 97 states have call predecessors, (103), 100 states have call successors, (103) [2024-12-01 13:21:07,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 1098 transitions. [2024-12-01 13:21:07,027 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 1098 transitions. Word has length 89 [2024-12-01 13:21:07,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:21:07,027 INFO L471 AbstractCegarLoop]: Abstraction has 662 states and 1098 transitions. [2024-12-01 13:21:07,027 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2024-12-01 13:21:07,027 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 1098 transitions. [2024-12-01 13:21:07,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-12-01 13:21:07,029 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:21:07,029 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:21:07,040 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-12-01 13:21:07,230 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-12-01 13:21:07,230 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:21:07,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:21:07,230 INFO L85 PathProgramCache]: Analyzing trace with hash -571437870, now seen corresponding path program 1 times [2024-12-01 13:21:07,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:21:07,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052516397] [2024-12-01 13:21:07,231 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:21:07,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:21:07,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:21:07,378 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-12-01 13:21:07,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:21:07,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052516397] [2024-12-01 13:21:07,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052516397] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 13:21:07,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1517153134] [2024-12-01 13:21:07,378 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:21:07,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:21:07,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 13:21:07,380 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 13:21:07,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-01 13:21:07,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:21:07,644 INFO L256 TraceCheckSpWp]: Trace formula consists of 1265 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-12-01 13:21:07,647 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 13:21:07,715 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-12-01 13:21:07,715 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 13:21:07,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1517153134] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:21:07,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 13:21:07,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2024-12-01 13:21:07,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172465730] [2024-12-01 13:21:07,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:21:07,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-01 13:21:07,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:21:07,716 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-01 13:21:07,716 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-12-01 13:21:07,716 INFO L87 Difference]: Start difference. First operand 662 states and 1098 transitions. Second operand has 8 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2024-12-01 13:21:07,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:21:07,876 INFO L93 Difference]: Finished difference Result 1327 states and 2203 transitions. [2024-12-01 13:21:07,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-01 13:21:07,876 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 89 [2024-12-01 13:21:07,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:21:07,882 INFO L225 Difference]: With dead ends: 1327 [2024-12-01 13:21:07,882 INFO L226 Difference]: Without dead ends: 688 [2024-12-01 13:21:07,885 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-12-01 13:21:07,885 INFO L435 NwaCegarLoop]: 948 mSDtfsCounter, 95 mSDsluCounter, 5591 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 6539 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 13:21:07,886 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 6539 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 13:21:07,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2024-12-01 13:21:07,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 662. [2024-12-01 13:21:07,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 529 states have (on average 1.6862003780718335) internal successors, (892), 549 states have internal predecessors, (892), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 97 states have call predecessors, (103), 100 states have call successors, (103) [2024-12-01 13:21:07,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 1098 transitions. [2024-12-01 13:21:07,913 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 1098 transitions. Word has length 89 [2024-12-01 13:21:07,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:21:07,913 INFO L471 AbstractCegarLoop]: Abstraction has 662 states and 1098 transitions. [2024-12-01 13:21:07,913 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2024-12-01 13:21:07,913 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 1098 transitions. [2024-12-01 13:21:07,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-12-01 13:21:07,915 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:21:07,915 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:21:07,926 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-12-01 13:21:08,116 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:21:08,116 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:21:08,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:21:08,116 INFO L85 PathProgramCache]: Analyzing trace with hash -2056575677, now seen corresponding path program 1 times [2024-12-01 13:21:08,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:21:08,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287337419] [2024-12-01 13:21:08,117 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:21:08,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:21:08,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:21:08,251 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-12-01 13:21:08,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:21:08,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287337419] [2024-12-01 13:21:08,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287337419] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 13:21:08,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678299045] [2024-12-01 13:21:08,252 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:21:08,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:21:08,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 13:21:08,254 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 13:21:08,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-01 13:21:08,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:21:08,517 INFO L256 TraceCheckSpWp]: Trace formula consists of 1266 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-12-01 13:21:08,521 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 13:21:08,591 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-12-01 13:21:08,591 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 13:21:08,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1678299045] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:21:08,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 13:21:08,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2024-12-01 13:21:08,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103216098] [2024-12-01 13:21:08,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:21:08,592 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-01 13:21:08,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:21:08,592 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-01 13:21:08,592 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-12-01 13:21:08,593 INFO L87 Difference]: Start difference. First operand 662 states and 1098 transitions. Second operand has 8 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2024-12-01 13:21:08,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:21:08,751 INFO L93 Difference]: Finished difference Result 1327 states and 2203 transitions. [2024-12-01 13:21:08,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-01 13:21:08,752 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 90 [2024-12-01 13:21:08,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:21:08,758 INFO L225 Difference]: With dead ends: 1327 [2024-12-01 13:21:08,758 INFO L226 Difference]: Without dead ends: 688 [2024-12-01 13:21:08,760 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-12-01 13:21:08,761 INFO L435 NwaCegarLoop]: 948 mSDtfsCounter, 105 mSDsluCounter, 5579 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 6527 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 13:21:08,761 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 6527 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 13:21:08,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2024-12-01 13:21:08,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 662. [2024-12-01 13:21:08,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 529 states have (on average 1.6862003780718335) internal successors, (892), 549 states have internal predecessors, (892), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 97 states have call predecessors, (103), 100 states have call successors, (103) [2024-12-01 13:21:08,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 1098 transitions. [2024-12-01 13:21:08,789 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 1098 transitions. Word has length 90 [2024-12-01 13:21:08,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:21:08,789 INFO L471 AbstractCegarLoop]: Abstraction has 662 states and 1098 transitions. [2024-12-01 13:21:08,789 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2024-12-01 13:21:08,789 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 1098 transitions. [2024-12-01 13:21:08,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-12-01 13:21:08,792 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:21:08,792 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] [2024-12-01 13:21:08,801 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-12-01 13:21:08,992 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:21:08,992 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:21:08,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:21:08,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1443976590, now seen corresponding path program 1 times [2024-12-01 13:21:08,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:21:08,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284972994] [2024-12-01 13:21:08,993 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:21:08,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:21:09,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:21:09,114 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-12-01 13:21:09,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:21:09,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284972994] [2024-12-01 13:21:09,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284972994] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 13:21:09,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2052378174] [2024-12-01 13:21:09,115 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:21:09,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:21:09,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 13:21:09,116 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 13:21:09,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-01 13:21:09,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:21:09,411 INFO L256 TraceCheckSpWp]: Trace formula consists of 1511 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-12-01 13:21:09,414 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 13:21:09,484 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-12-01 13:21:09,484 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 13:21:09,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2052378174] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:21:09,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 13:21:09,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2024-12-01 13:21:09,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868423618] [2024-12-01 13:21:09,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:21:09,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-01 13:21:09,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:21:09,485 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-01 13:21:09,485 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-12-01 13:21:09,485 INFO L87 Difference]: Start difference. First operand 662 states and 1098 transitions. Second operand has 8 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-12-01 13:21:09,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:21:09,624 INFO L93 Difference]: Finished difference Result 1318 states and 2188 transitions. [2024-12-01 13:21:09,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-01 13:21:09,625 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 107 [2024-12-01 13:21:09,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:21:09,630 INFO L225 Difference]: With dead ends: 1318 [2024-12-01 13:21:09,630 INFO L226 Difference]: Without dead ends: 679 [2024-12-01 13:21:09,633 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-12-01 13:21:09,633 INFO L435 NwaCegarLoop]: 948 mSDtfsCounter, 115 mSDsluCounter, 5567 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 6515 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 13:21:09,634 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 6515 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 13:21:09,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2024-12-01 13:21:09,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 662. [2024-12-01 13:21:09,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 529 states have (on average 1.6862003780718335) internal successors, (892), 549 states have internal predecessors, (892), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 97 states have call predecessors, (103), 100 states have call successors, (103) [2024-12-01 13:21:09,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 1098 transitions. [2024-12-01 13:21:09,660 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 1098 transitions. Word has length 107 [2024-12-01 13:21:09,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:21:09,661 INFO L471 AbstractCegarLoop]: Abstraction has 662 states and 1098 transitions. [2024-12-01 13:21:09,661 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-12-01 13:21:09,661 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 1098 transitions. [2024-12-01 13:21:09,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-12-01 13:21:09,663 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:21:09,663 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:21:09,674 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-12-01 13:21:09,864 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-12-01 13:21:09,864 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:21:09,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:21:09,864 INFO L85 PathProgramCache]: Analyzing trace with hash -143998187, now seen corresponding path program 1 times [2024-12-01 13:21:09,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:21:09,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009329166] [2024-12-01 13:21:09,864 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:21:09,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:21:09,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:21:09,934 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-12-01 13:21:09,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:21:09,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009329166] [2024-12-01 13:21:09,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009329166] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 13:21:09,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540595967] [2024-12-01 13:21:09,934 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:21:09,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:21:09,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 13:21:09,938 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 13:21:09,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-12-01 13:21:10,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:21:10,182 INFO L256 TraceCheckSpWp]: Trace formula consists of 1270 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-01 13:21:10,183 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 13:21:10,195 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-01 13:21:10,195 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 13:21:10,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [540595967] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:21:10,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 13:21:10,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-12-01 13:21:10,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606455365] [2024-12-01 13:21:10,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:21:10,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-01 13:21:10,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:21:10,196 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-01 13:21:10,197 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-01 13:21:10,197 INFO L87 Difference]: Start difference. First operand 662 states and 1098 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-12-01 13:21:10,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:21:10,253 INFO L93 Difference]: Finished difference Result 1290 states and 2148 transitions. [2024-12-01 13:21:10,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-01 13:21:10,254 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 91 [2024-12-01 13:21:10,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:21:10,259 INFO L225 Difference]: With dead ends: 1290 [2024-12-01 13:21:10,259 INFO L226 Difference]: Without dead ends: 662 [2024-12-01 13:21:10,261 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-12-01 13:21:10,262 INFO L435 NwaCegarLoop]: 956 mSDtfsCounter, 20 mSDsluCounter, 1906 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2862 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 13:21:10,262 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2862 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 13:21:10,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2024-12-01 13:21:10,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 662. [2024-12-01 13:21:10,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 529 states have (on average 1.6767485822306238) internal successors, (887), 549 states have internal predecessors, (887), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 97 states have call predecessors, (103), 100 states have call successors, (103) [2024-12-01 13:21:10,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 1093 transitions. [2024-12-01 13:21:10,287 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 1093 transitions. Word has length 91 [2024-12-01 13:21:10,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:21:10,287 INFO L471 AbstractCegarLoop]: Abstraction has 662 states and 1093 transitions. [2024-12-01 13:21:10,287 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-12-01 13:21:10,287 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 1093 transitions. [2024-12-01 13:21:10,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-12-01 13:21:10,289 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:21:10,289 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:21:10,299 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-12-01 13:21:10,490 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-12-01 13:21:10,490 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:21:10,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:21:10,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1082141184, now seen corresponding path program 1 times [2024-12-01 13:21:10,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:21:10,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896276040] [2024-12-01 13:21:10,491 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:21:10,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:21:10,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:21:10,555 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-12-01 13:21:10,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:21:10,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896276040] [2024-12-01 13:21:10,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896276040] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 13:21:10,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702615442] [2024-12-01 13:21:10,567 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:21:10,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:21:10,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 13:21:10,569 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 13:21:10,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-12-01 13:21:10,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:21:10,803 INFO L256 TraceCheckSpWp]: Trace formula consists of 1271 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-01 13:21:10,804 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 13:21:10,823 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-12-01 13:21:10,823 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 13:21:10,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1702615442] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:21:10,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 13:21:10,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-12-01 13:21:10,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881572417] [2024-12-01 13:21:10,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:21:10,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-01 13:21:10,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:21:10,824 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-01 13:21:10,824 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-01 13:21:10,824 INFO L87 Difference]: Start difference. First operand 662 states and 1093 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-12-01 13:21:10,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:21:10,967 INFO L93 Difference]: Finished difference Result 1319 states and 2188 transitions. [2024-12-01 13:21:10,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-01 13:21:10,968 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 92 [2024-12-01 13:21:10,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:21:10,972 INFO L225 Difference]: With dead ends: 1319 [2024-12-01 13:21:10,972 INFO L226 Difference]: Without dead ends: 749 [2024-12-01 13:21:10,973 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-12-01 13:21:10,974 INFO L435 NwaCegarLoop]: 921 mSDtfsCounter, 171 mSDsluCounter, 1813 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 2734 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 13:21:10,974 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 2734 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 13:21:10,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2024-12-01 13:21:10,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 707. [2024-12-01 13:21:10,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 707 states, 573 states have (on average 1.6945898778359512) internal successors, (971), 593 states have internal predecessors, (971), 103 states have call successors, (103), 30 states have call predecessors, (103), 30 states have return successors, (102), 97 states have call predecessors, (102), 100 states have call successors, (102) [2024-12-01 13:21:10,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 707 states to 707 states and 1176 transitions. [2024-12-01 13:21:10,991 INFO L78 Accepts]: Start accepts. Automaton has 707 states and 1176 transitions. Word has length 92 [2024-12-01 13:21:10,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:21:10,991 INFO L471 AbstractCegarLoop]: Abstraction has 707 states and 1176 transitions. [2024-12-01 13:21:10,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-12-01 13:21:10,991 INFO L276 IsEmpty]: Start isEmpty. Operand 707 states and 1176 transitions. [2024-12-01 13:21:10,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-12-01 13:21:10,993 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:21:10,994 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] [2024-12-01 13:21:11,004 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-12-01 13:21:11,194 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-12-01 13:21:11,194 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:21:11,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:21:11,195 INFO L85 PathProgramCache]: Analyzing trace with hash 105704088, now seen corresponding path program 1 times [2024-12-01 13:21:11,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:21:11,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531560156] [2024-12-01 13:21:11,195 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:21:11,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:21:11,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:21:11,270 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-12-01 13:21:11,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:21:11,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531560156] [2024-12-01 13:21:11,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531560156] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 13:21:11,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491312328] [2024-12-01 13:21:11,271 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:21:11,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:21:11,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 13:21:11,273 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 13:21:11,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-12-01 13:21:11,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:21:11,557 INFO L256 TraceCheckSpWp]: Trace formula consists of 1516 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-12-01 13:21:11,559 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 13:21:11,598 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-12-01 13:21:11,598 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 13:21:11,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1491312328] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:21:11,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 13:21:11,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2024-12-01 13:21:11,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968825074] [2024-12-01 13:21:11,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:21:11,599 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-01 13:21:11,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:21:11,599 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-01 13:21:11,599 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-01 13:21:11,599 INFO L87 Difference]: Start difference. First operand 707 states and 1176 transitions. Second operand has 7 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-12-01 13:21:11,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:21:11,687 INFO L93 Difference]: Finished difference Result 1312 states and 2175 transitions. [2024-12-01 13:21:11,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-01 13:21:11,687 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 109 [2024-12-01 13:21:11,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:21:11,691 INFO L225 Difference]: With dead ends: 1312 [2024-12-01 13:21:11,691 INFO L226 Difference]: Without dead ends: 742 [2024-12-01 13:21:11,692 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-12-01 13:21:11,693 INFO L435 NwaCegarLoop]: 959 mSDtfsCounter, 89 mSDsluCounter, 4706 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 5665 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 13:21:11,693 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 5665 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 13:21:11,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2024-12-01 13:21:11,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 720. [2024-12-01 13:21:11,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 720 states, 583 states have (on average 1.6912521440823327) internal successors, (986), 605 states have internal predecessors, (986), 104 states have call successors, (104), 30 states have call predecessors, (104), 32 states have return successors, (105), 98 states have call predecessors, (105), 101 states have call successors, (105) [2024-12-01 13:21:11,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 720 states to 720 states and 1195 transitions. [2024-12-01 13:21:11,710 INFO L78 Accepts]: Start accepts. Automaton has 720 states and 1195 transitions. Word has length 109 [2024-12-01 13:21:11,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:21:11,710 INFO L471 AbstractCegarLoop]: Abstraction has 720 states and 1195 transitions. [2024-12-01 13:21:11,711 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-12-01 13:21:11,711 INFO L276 IsEmpty]: Start isEmpty. Operand 720 states and 1195 transitions. [2024-12-01 13:21:11,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-12-01 13:21:11,712 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:21:11,712 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] [2024-12-01 13:21:11,719 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-12-01 13:21:11,913 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-12-01 13:21:11,913 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:21:11,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:21:11,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1927892131, now seen corresponding path program 1 times [2024-12-01 13:21:11,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:21:11,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653991644] [2024-12-01 13:21:11,913 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:21:11,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:21:11,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:21:11,967 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-12-01 13:21:11,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:21:11,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653991644] [2024-12-01 13:21:11,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653991644] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 13:21:11,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794028260] [2024-12-01 13:21:11,968 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:21:11,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:21:11,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 13:21:11,969 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 13:21:11,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-12-01 13:21:12,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:21:12,216 INFO L256 TraceCheckSpWp]: Trace formula consists of 1517 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-12-01 13:21:12,219 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 13:21:12,258 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-12-01 13:21:12,259 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 13:21:12,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794028260] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:21:12,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 13:21:12,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2024-12-01 13:21:12,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376064158] [2024-12-01 13:21:12,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:21:12,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-01 13:21:12,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:21:12,260 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-01 13:21:12,260 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-01 13:21:12,260 INFO L87 Difference]: Start difference. First operand 720 states and 1195 transitions. Second operand has 7 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-12-01 13:21:12,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:21:12,338 INFO L93 Difference]: Finished difference Result 1321 states and 2189 transitions. [2024-12-01 13:21:12,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-01 13:21:12,338 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 110 [2024-12-01 13:21:12,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:21:12,343 INFO L225 Difference]: With dead ends: 1321 [2024-12-01 13:21:12,343 INFO L226 Difference]: Without dead ends: 751 [2024-12-01 13:21:12,345 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-12-01 13:21:12,346 INFO L435 NwaCegarLoop]: 959 mSDtfsCounter, 100 mSDsluCounter, 4694 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 5653 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 13:21:12,346 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 5653 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 13:21:12,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 751 states. [2024-12-01 13:21:12,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 751 to 720. [2024-12-01 13:21:12,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 720 states, 583 states have (on average 1.6912521440823327) internal successors, (986), 605 states have internal predecessors, (986), 104 states have call successors, (104), 30 states have call predecessors, (104), 32 states have return successors, (105), 98 states have call predecessors, (105), 101 states have call successors, (105) [2024-12-01 13:21:12,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 720 states to 720 states and 1195 transitions. [2024-12-01 13:21:12,369 INFO L78 Accepts]: Start accepts. Automaton has 720 states and 1195 transitions. Word has length 110 [2024-12-01 13:21:12,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:21:12,370 INFO L471 AbstractCegarLoop]: Abstraction has 720 states and 1195 transitions. [2024-12-01 13:21:12,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-12-01 13:21:12,370 INFO L276 IsEmpty]: Start isEmpty. Operand 720 states and 1195 transitions. [2024-12-01 13:21:12,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-12-01 13:21:12,372 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:21:12,372 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] [2024-12-01 13:21:12,383 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-12-01 13:21:12,573 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-12-01 13:21:12,573 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:21:12,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:21:12,573 INFO L85 PathProgramCache]: Analyzing trace with hash -285036579, now seen corresponding path program 1 times [2024-12-01 13:21:12,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:21:12,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489365872] [2024-12-01 13:21:12,573 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:21:12,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:21:12,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:21:12,647 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-12-01 13:21:12,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:21:12,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489365872] [2024-12-01 13:21:12,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489365872] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 13:21:12,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [686844950] [2024-12-01 13:21:12,647 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:21:12,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:21:12,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 13:21:12,649 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 13:21:12,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-12-01 13:21:12,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:21:12,950 INFO L256 TraceCheckSpWp]: Trace formula consists of 1513 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-12-01 13:21:12,953 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 13:21:13,004 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-12-01 13:21:13,004 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 13:21:13,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [686844950] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:21:13,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 13:21:13,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2024-12-01 13:21:13,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070845687] [2024-12-01 13:21:13,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:21:13,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-01 13:21:13,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:21:13,006 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-01 13:21:13,006 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-12-01 13:21:13,006 INFO L87 Difference]: Start difference. First operand 720 states and 1195 transitions. Second operand has 8 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-12-01 13:21:13,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:21:13,126 INFO L93 Difference]: Finished difference Result 1324 states and 2192 transitions. [2024-12-01 13:21:13,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-01 13:21:13,127 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 110 [2024-12-01 13:21:13,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:21:13,132 INFO L225 Difference]: With dead ends: 1324 [2024-12-01 13:21:13,132 INFO L226 Difference]: Without dead ends: 754 [2024-12-01 13:21:13,135 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-12-01 13:21:13,135 INFO L435 NwaCegarLoop]: 949 mSDtfsCounter, 96 mSDsluCounter, 5600 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 6549 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 13:21:13,135 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 6549 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 13:21:13,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2024-12-01 13:21:13,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 720. [2024-12-01 13:21:13,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 720 states, 583 states have (on average 1.6912521440823327) internal successors, (986), 605 states have internal predecessors, (986), 104 states have call successors, (104), 30 states have call predecessors, (104), 32 states have return successors, (105), 98 states have call predecessors, (105), 101 states have call successors, (105) [2024-12-01 13:21:13,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 720 states to 720 states and 1195 transitions. [2024-12-01 13:21:13,161 INFO L78 Accepts]: Start accepts. Automaton has 720 states and 1195 transitions. Word has length 110 [2024-12-01 13:21:13,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:21:13,161 INFO L471 AbstractCegarLoop]: Abstraction has 720 states and 1195 transitions. [2024-12-01 13:21:13,161 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-12-01 13:21:13,161 INFO L276 IsEmpty]: Start isEmpty. Operand 720 states and 1195 transitions. [2024-12-01 13:21:13,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-12-01 13:21:13,163 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:21:13,164 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] [2024-12-01 13:21:13,174 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-12-01 13:21:13,364 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-12-01 13:21:13,364 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:21:13,365 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:21:13,365 INFO L85 PathProgramCache]: Analyzing trace with hash 53288255, now seen corresponding path program 1 times [2024-12-01 13:21:13,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:21:13,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575015295] [2024-12-01 13:21:13,365 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:21:13,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:21:13,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:21:13,423 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-12-01 13:21:13,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:21:13,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575015295] [2024-12-01 13:21:13,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575015295] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 13:21:13,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198751698] [2024-12-01 13:21:13,423 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:21:13,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:21:13,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 13:21:13,425 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 13:21:13,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-12-01 13:21:13,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:21:13,700 INFO L256 TraceCheckSpWp]: Trace formula consists of 1517 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-01 13:21:13,702 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 13:21:13,718 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-12-01 13:21:13,718 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 13:21:13,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [198751698] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:21:13,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 13:21:13,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-12-01 13:21:13,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122934637] [2024-12-01 13:21:13,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:21:13,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-01 13:21:13,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:21:13,719 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-01 13:21:13,719 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-01 13:21:13,719 INFO L87 Difference]: Start difference. First operand 720 states and 1195 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-12-01 13:21:13,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:21:13,767 INFO L93 Difference]: Finished difference Result 1366 states and 2271 transitions. [2024-12-01 13:21:13,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-01 13:21:13,767 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 110 [2024-12-01 13:21:13,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:21:13,773 INFO L225 Difference]: With dead ends: 1366 [2024-12-01 13:21:13,773 INFO L226 Difference]: Without dead ends: 720 [2024-12-01 13:21:13,775 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-01 13:21:13,776 INFO L435 NwaCegarLoop]: 960 mSDtfsCounter, 2 mSDsluCounter, 1911 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2871 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 13:21:13,776 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2871 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 13:21:13,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720 states. [2024-12-01 13:21:13,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720 to 720. [2024-12-01 13:21:13,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 720 states, 583 states have (on average 1.686106346483705) internal successors, (983), 605 states have internal predecessors, (983), 104 states have call successors, (104), 30 states have call predecessors, (104), 32 states have return successors, (105), 98 states have call predecessors, (105), 101 states have call successors, (105) [2024-12-01 13:21:13,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 720 states to 720 states and 1192 transitions. [2024-12-01 13:21:13,791 INFO L78 Accepts]: Start accepts. Automaton has 720 states and 1192 transitions. Word has length 110 [2024-12-01 13:21:13,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:21:13,791 INFO L471 AbstractCegarLoop]: Abstraction has 720 states and 1192 transitions. [2024-12-01 13:21:13,791 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-12-01 13:21:13,792 INFO L276 IsEmpty]: Start isEmpty. Operand 720 states and 1192 transitions. [2024-12-01 13:21:13,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-12-01 13:21:13,793 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:21:13,793 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] [2024-12-01 13:21:13,801 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-12-01 13:21:13,993 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-12-01 13:21:13,994 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:21:13,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:21:13,994 INFO L85 PathProgramCache]: Analyzing trace with hash 379820122, now seen corresponding path program 1 times [2024-12-01 13:21:13,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:21:13,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037195468] [2024-12-01 13:21:13,994 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:21:13,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:21:14,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:21:14,045 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-12-01 13:21:14,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:21:14,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037195468] [2024-12-01 13:21:14,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037195468] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 13:21:14,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [652166530] [2024-12-01 13:21:14,045 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:21:14,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:21:14,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 13:21:14,047 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 13:21:14,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-12-01 13:21:14,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:21:14,289 INFO L256 TraceCheckSpWp]: Trace formula consists of 1514 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-12-01 13:21:14,291 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 13:21:14,353 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-12-01 13:21:14,353 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 13:21:14,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [652166530] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:21:14,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 13:21:14,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2024-12-01 13:21:14,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088427898] [2024-12-01 13:21:14,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:21:14,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-01 13:21:14,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:21:14,354 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-01 13:21:14,354 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-12-01 13:21:14,354 INFO L87 Difference]: Start difference. First operand 720 states and 1192 transitions. Second operand has 8 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-12-01 13:21:14,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:21:14,490 INFO L93 Difference]: Finished difference Result 1315 states and 2175 transitions. [2024-12-01 13:21:14,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-01 13:21:14,491 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 111 [2024-12-01 13:21:14,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:21:14,496 INFO L225 Difference]: With dead ends: 1315 [2024-12-01 13:21:14,496 INFO L226 Difference]: Without dead ends: 745 [2024-12-01 13:21:14,499 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-12-01 13:21:14,499 INFO L435 NwaCegarLoop]: 946 mSDtfsCounter, 106 mSDsluCounter, 5573 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 6519 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 13:21:14,500 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 6519 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 13:21:14,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 745 states. [2024-12-01 13:21:14,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 745 to 720. [2024-12-01 13:21:14,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 720 states, 583 states have (on average 1.686106346483705) internal successors, (983), 605 states have internal predecessors, (983), 104 states have call successors, (104), 30 states have call predecessors, (104), 32 states have return successors, (105), 98 states have call predecessors, (105), 101 states have call successors, (105) [2024-12-01 13:21:14,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 720 states to 720 states and 1192 transitions. [2024-12-01 13:21:14,522 INFO L78 Accepts]: Start accepts. Automaton has 720 states and 1192 transitions. Word has length 111 [2024-12-01 13:21:14,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:21:14,523 INFO L471 AbstractCegarLoop]: Abstraction has 720 states and 1192 transitions. [2024-12-01 13:21:14,523 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-12-01 13:21:14,523 INFO L276 IsEmpty]: Start isEmpty. Operand 720 states and 1192 transitions. [2024-12-01 13:21:14,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-12-01 13:21:14,525 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:21:14,525 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:21:14,535 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-12-01 13:21:14,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-12-01 13:21:14,726 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:21:14,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:21:14,726 INFO L85 PathProgramCache]: Analyzing trace with hash -854332181, now seen corresponding path program 1 times [2024-12-01 13:21:14,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:21:14,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350336809] [2024-12-01 13:21:14,726 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:21:14,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:21:14,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:21:14,785 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-12-01 13:21:14,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:21:14,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350336809] [2024-12-01 13:21:14,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350336809] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 13:21:14,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1920039023] [2024-12-01 13:21:14,786 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:21:14,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:21:14,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 13:21:14,788 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 13:21:14,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-12-01 13:21:15,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:21:15,013 INFO L256 TraceCheckSpWp]: Trace formula consists of 1271 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-01 13:21:15,015 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 13:21:15,191 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-12-01 13:21:15,192 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 13:21:15,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1920039023] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:21:15,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 13:21:15,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2024-12-01 13:21:15,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053710081] [2024-12-01 13:21:15,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:21:15,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-01 13:21:15,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:21:15,193 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-01 13:21:15,193 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-01 13:21:15,193 INFO L87 Difference]: Start difference. First operand 720 states and 1192 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-12-01 13:21:15,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:21:15,327 INFO L93 Difference]: Finished difference Result 1848 states and 3086 transitions. [2024-12-01 13:21:15,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-01 13:21:15,328 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 96 [2024-12-01 13:21:15,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:21:15,336 INFO L225 Difference]: With dead ends: 1848 [2024-12-01 13:21:15,336 INFO L226 Difference]: Without dead ends: 1282 [2024-12-01 13:21:15,339 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-01 13:21:15,339 INFO L435 NwaCegarLoop]: 1028 mSDtfsCounter, 893 mSDsluCounter, 921 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 893 SdHoareTripleChecker+Valid, 1949 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 13:21:15,340 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [893 Valid, 1949 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 13:21:15,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1282 states. [2024-12-01 13:21:15,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1282 to 1217. [2024-12-01 13:21:15,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1217 states, 987 states have (on average 1.6919959473150963) internal successors, (1670), 1018 states have internal predecessors, (1670), 178 states have call successors, (178), 50 states have call predecessors, (178), 51 states have return successors, (185), 163 states have call predecessors, (185), 174 states have call successors, (185) [2024-12-01 13:21:15,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1217 states to 1217 states and 2033 transitions. [2024-12-01 13:21:15,384 INFO L78 Accepts]: Start accepts. Automaton has 1217 states and 2033 transitions. Word has length 96 [2024-12-01 13:21:15,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:21:15,384 INFO L471 AbstractCegarLoop]: Abstraction has 1217 states and 2033 transitions. [2024-12-01 13:21:15,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-12-01 13:21:15,384 INFO L276 IsEmpty]: Start isEmpty. Operand 1217 states and 2033 transitions. [2024-12-01 13:21:15,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2024-12-01 13:21:15,389 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:21:15,389 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, 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] [2024-12-01 13:21:15,399 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-12-01 13:21:15,589 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-12-01 13:21:15,589 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:21:15,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:21:15,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1735996436, now seen corresponding path program 1 times [2024-12-01 13:21:15,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:21:15,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555009530] [2024-12-01 13:21:15,590 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:21:15,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:21:15,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:21:15,711 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-12-01 13:21:15,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:21:15,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555009530] [2024-12-01 13:21:15,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555009530] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 13:21:15,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675188678] [2024-12-01 13:21:15,712 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:21:15,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:21:15,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 13:21:15,714 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 13:21:15,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-12-01 13:21:16,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:21:16,064 INFO L256 TraceCheckSpWp]: Trace formula consists of 2205 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-01 13:21:16,068 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 13:21:16,144 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 25 proven. 25 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-12-01 13:21:16,144 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 13:21:16,339 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-12-01 13:21:16,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [675188678] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-01 13:21:16,340 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-01 13:21:16,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 8 [2024-12-01 13:21:16,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551098175] [2024-12-01 13:21:16,340 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-01 13:21:16,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-01 13:21:16,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:21:16,341 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-01 13:21:16,341 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-12-01 13:21:16,341 INFO L87 Difference]: Start difference. First operand 1217 states and 2033 transitions. Second operand has 8 states, 8 states have (on average 20.375) internal successors, (163), 8 states have internal predecessors, (163), 6 states have call successors, (39), 5 states have call predecessors, (39), 5 states have return successors, (37), 6 states have call predecessors, (37), 6 states have call successors, (37) [2024-12-01 13:21:18,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:21:18,798 INFO L93 Difference]: Finished difference Result 3482 states and 5818 transitions. [2024-12-01 13:21:18,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-01 13:21:18,798 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 20.375) internal successors, (163), 8 states have internal predecessors, (163), 6 states have call successors, (39), 5 states have call predecessors, (39), 5 states have return successors, (37), 6 states have call predecessors, (37), 6 states have call successors, (37) Word has length 187 [2024-12-01 13:21:18,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:21:18,812 INFO L225 Difference]: With dead ends: 3482 [2024-12-01 13:21:18,812 INFO L226 Difference]: Without dead ends: 2253 [2024-12-01 13:21:18,818 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 371 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2024-12-01 13:21:18,819 INFO L435 NwaCegarLoop]: 425 mSDtfsCounter, 1626 mSDsluCounter, 1560 mSDsCounter, 0 mSdLazyCounter, 4485 mSolverCounterSat, 313 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1684 SdHoareTripleChecker+Valid, 1985 SdHoareTripleChecker+Invalid, 4798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 313 IncrementalHoareTripleChecker+Valid, 4485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-12-01 13:21:18,819 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1684 Valid, 1985 Invalid, 4798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [313 Valid, 4485 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-12-01 13:21:18,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2253 states. [2024-12-01 13:21:18,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2253 to 1993. [2024-12-01 13:21:18,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1993 states, 1595 states have (on average 1.6539184952978057) internal successors, (2638), 1635 states have internal predecessors, (2638), 310 states have call successors, (310), 82 states have call predecessors, (310), 87 states have return successors, (356), 289 states have call predecessors, (356), 304 states have call successors, (356) [2024-12-01 13:21:18,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1993 states to 1993 states and 3304 transitions. [2024-12-01 13:21:18,911 INFO L78 Accepts]: Start accepts. Automaton has 1993 states and 3304 transitions. Word has length 187 [2024-12-01 13:21:18,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:21:18,911 INFO L471 AbstractCegarLoop]: Abstraction has 1993 states and 3304 transitions. [2024-12-01 13:21:18,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.375) internal successors, (163), 8 states have internal predecessors, (163), 6 states have call successors, (39), 5 states have call predecessors, (39), 5 states have return successors, (37), 6 states have call predecessors, (37), 6 states have call successors, (37) [2024-12-01 13:21:18,911 INFO L276 IsEmpty]: Start isEmpty. Operand 1993 states and 3304 transitions. [2024-12-01 13:21:18,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-12-01 13:21:18,915 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:21:18,915 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:21:18,927 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-12-01 13:21:19,116 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:21:19,116 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:21:19,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:21:19,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1753935866, now seen corresponding path program 1 times [2024-12-01 13:21:19,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:21:19,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684368131] [2024-12-01 13:21:19,117 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:21:19,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:21:19,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:21:19,261 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-12-01 13:21:19,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:21:19,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684368131] [2024-12-01 13:21:19,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684368131] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 13:21:19,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1311520503] [2024-12-01 13:21:19,261 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:21:19,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:21:19,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 13:21:19,264 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 13:21:19,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-12-01 13:21:19,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:21:19,525 INFO L256 TraceCheckSpWp]: Trace formula consists of 1614 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-01 13:21:19,527 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 13:21:19,546 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-12-01 13:21:19,546 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 13:21:19,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1311520503] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:21:19,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 13:21:19,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2024-12-01 13:21:19,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256121026] [2024-12-01 13:21:19,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:21:19,547 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-01 13:21:19,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:21:19,547 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-01 13:21:19,547 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-01 13:21:19,547 INFO L87 Difference]: Start difference. First operand 1993 states and 3304 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-12-01 13:21:19,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:21:19,614 INFO L93 Difference]: Finished difference Result 3951 states and 6626 transitions. [2024-12-01 13:21:19,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-01 13:21:19,614 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 135 [2024-12-01 13:21:19,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:21:19,623 INFO L225 Difference]: With dead ends: 3951 [2024-12-01 13:21:19,623 INFO L226 Difference]: Without dead ends: 2077 [2024-12-01 13:21:19,628 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-12-01 13:21:19,629 INFO L435 NwaCegarLoop]: 989 mSDtfsCounter, 54 mSDsluCounter, 1918 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 2907 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 13:21:19,629 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 2907 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 13:21:19,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2077 states. [2024-12-01 13:21:19,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2077 to 2077. [2024-12-01 13:21:19,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2077 states, 1675 states have (on average 1.6561194029850745) internal successors, (2774), 1715 states have internal predecessors, (2774), 310 states have call successors, (310), 86 states have call predecessors, (310), 91 states have return successors, (356), 289 states have call predecessors, (356), 304 states have call successors, (356) [2024-12-01 13:21:19,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2077 states to 2077 states and 3440 transitions. [2024-12-01 13:21:19,710 INFO L78 Accepts]: Start accepts. Automaton has 2077 states and 3440 transitions. Word has length 135 [2024-12-01 13:21:19,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:21:19,710 INFO L471 AbstractCegarLoop]: Abstraction has 2077 states and 3440 transitions. [2024-12-01 13:21:19,711 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-12-01 13:21:19,711 INFO L276 IsEmpty]: Start isEmpty. Operand 2077 states and 3440 transitions. [2024-12-01 13:21:19,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-12-01 13:21:19,715 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:21:19,715 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:21:19,725 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-12-01 13:21:19,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:21:19,915 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:21:19,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:21:19,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1227493189, now seen corresponding path program 1 times [2024-12-01 13:21:19,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:21:19,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435511152] [2024-12-01 13:21:19,916 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:21:19,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:21:19,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:21:20,046 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-01 13:21:20,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:21:20,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435511152] [2024-12-01 13:21:20,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435511152] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 13:21:20,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1037895362] [2024-12-01 13:21:20,046 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:21:20,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:21:20,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 13:21:20,048 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 13:21:20,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-12-01 13:21:20,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:21:20,336 INFO L256 TraceCheckSpWp]: Trace formula consists of 1611 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-12-01 13:21:20,338 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 13:21:20,407 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-12-01 13:21:20,407 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 13:21:20,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1037895362] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:21:20,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 13:21:20,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2024-12-01 13:21:20,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913586338] [2024-12-01 13:21:20,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:21:20,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-01 13:21:20,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:21:20,408 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-01 13:21:20,408 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-12-01 13:21:20,408 INFO L87 Difference]: Start difference. First operand 2077 states and 3440 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, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-12-01 13:21:20,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:21:20,517 INFO L93 Difference]: Finished difference Result 4037 states and 6722 transitions. [2024-12-01 13:21:20,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-01 13:21:20,517 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, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 134 [2024-12-01 13:21:20,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:21:20,530 INFO L225 Difference]: With dead ends: 4037 [2024-12-01 13:21:20,530 INFO L226 Difference]: Without dead ends: 2079 [2024-12-01 13:21:20,539 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-12-01 13:21:20,540 INFO L435 NwaCegarLoop]: 1330 mSDtfsCounter, 917 mSDsluCounter, 3211 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 917 SdHoareTripleChecker+Valid, 4541 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 13:21:20,540 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [917 Valid, 4541 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 13:21:20,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2079 states. [2024-12-01 13:21:20,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2079 to 2075. [2024-12-01 13:21:20,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2075 states, 1675 states have (on average 1.6549253731343283) internal successors, (2772), 1713 states have internal predecessors, (2772), 308 states have call successors, (308), 86 states have call predecessors, (308), 91 states have return successors, (349), 289 states have call predecessors, (349), 302 states have call successors, (349) [2024-12-01 13:21:20,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2075 states to 2075 states and 3429 transitions. [2024-12-01 13:21:20,625 INFO L78 Accepts]: Start accepts. Automaton has 2075 states and 3429 transitions. Word has length 134 [2024-12-01 13:21:20,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:21:20,625 INFO L471 AbstractCegarLoop]: Abstraction has 2075 states and 3429 transitions. [2024-12-01 13:21:20,625 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, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-12-01 13:21:20,625 INFO L276 IsEmpty]: Start isEmpty. Operand 2075 states and 3429 transitions. [2024-12-01 13:21:20,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-12-01 13:21:20,629 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:21:20,629 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:21:20,640 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-12-01 13:21:20,829 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:21:20,830 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:21:20,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:21:20,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1363127339, now seen corresponding path program 1 times [2024-12-01 13:21:20,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:21:20,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984492698] [2024-12-01 13:21:20,830 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:21:20,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:21:20,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:21:20,945 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-01 13:21:20,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:21:20,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984492698] [2024-12-01 13:21:20,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984492698] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 13:21:20,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241522895] [2024-12-01 13:21:20,946 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:21:20,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:21:20,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 13:21:20,947 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 13:21:20,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-12-01 13:21:21,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:21:21,197 INFO L256 TraceCheckSpWp]: Trace formula consists of 1611 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-01 13:21:21,199 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 13:21:21,235 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-12-01 13:21:21,236 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 13:21:21,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [241522895] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:21:21,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 13:21:21,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2024-12-01 13:21:21,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616396001] [2024-12-01 13:21:21,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:21:21,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-01 13:21:21,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:21:21,237 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-01 13:21:21,237 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-12-01 13:21:21,237 INFO L87 Difference]: Start difference. First operand 2075 states and 3429 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-12-01 13:21:22,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:21:22,085 INFO L93 Difference]: Finished difference Result 7693 states and 13243 transitions. [2024-12-01 13:21:22,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-01 13:21:22,086 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 135 [2024-12-01 13:21:22,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:21:22,114 INFO L225 Difference]: With dead ends: 7693 [2024-12-01 13:21:22,114 INFO L226 Difference]: Without dead ends: 5737 [2024-12-01 13:21:22,151 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-12-01 13:21:22,152 INFO L435 NwaCegarLoop]: 1031 mSDtfsCounter, 1792 mSDsluCounter, 2296 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1792 SdHoareTripleChecker+Valid, 3327 SdHoareTripleChecker+Invalid, 759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-12-01 13:21:22,153 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1792 Valid, 3327 Invalid, 759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-12-01 13:21:22,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5737 states. [2024-12-01 13:21:22,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5737 to 5705. [2024-12-01 13:21:22,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5705 states, 4601 states have (on average 1.6213866550749838) internal successors, (7460), 4707 states have internal predecessors, (7460), 844 states have call successors, (844), 246 states have call predecessors, (844), 259 states have return successors, (1248), 793 states have call predecessors, (1248), 830 states have call successors, (1248) [2024-12-01 13:21:22,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5705 states to 5705 states and 9552 transitions. [2024-12-01 13:21:22,307 INFO L78 Accepts]: Start accepts. Automaton has 5705 states and 9552 transitions. Word has length 135 [2024-12-01 13:21:22,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:21:22,307 INFO L471 AbstractCegarLoop]: Abstraction has 5705 states and 9552 transitions. [2024-12-01 13:21:22,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-12-01 13:21:22,308 INFO L276 IsEmpty]: Start isEmpty. Operand 5705 states and 9552 transitions. [2024-12-01 13:21:22,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-12-01 13:21:22,311 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:21:22,311 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:21:22,318 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-12-01 13:21:22,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:21:22,512 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:21:22,512 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:21:22,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1227506906, now seen corresponding path program 1 times [2024-12-01 13:21:22,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:21:22,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466417936] [2024-12-01 13:21:22,512 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:21:22,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:21:22,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:21:22,626 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-12-01 13:21:22,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:21:22,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466417936] [2024-12-01 13:21:22,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466417936] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 13:21:22,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [965495651] [2024-12-01 13:21:22,626 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:21:22,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:21:22,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 13:21:22,628 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 13:21:22,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-12-01 13:21:22,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:21:22,919 INFO L256 TraceCheckSpWp]: Trace formula consists of 1608 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-12-01 13:21:22,925 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 13:21:22,956 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-12-01 13:21:22,956 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 13:21:22,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [965495651] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:21:22,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 13:21:22,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 7 [2024-12-01 13:21:22,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067972124] [2024-12-01 13:21:22,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:21:22,957 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-01 13:21:22,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:21:22,958 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-01 13:21:22,958 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-01 13:21:22,958 INFO L87 Difference]: Start difference. First operand 5705 states and 9552 transitions. Second operand has 7 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2024-12-01 13:21:23,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:21:23,192 INFO L93 Difference]: Finished difference Result 11506 states and 19252 transitions. [2024-12-01 13:21:23,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-01 13:21:23,193 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) Word has length 135 [2024-12-01 13:21:23,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:21:23,230 INFO L225 Difference]: With dead ends: 11506 [2024-12-01 13:21:23,230 INFO L226 Difference]: Without dead ends: 5818 [2024-12-01 13:21:23,250 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-01 13:21:23,251 INFO L435 NwaCegarLoop]: 967 mSDtfsCounter, 122 mSDsluCounter, 4696 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 5663 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 13:21:23,251 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 5663 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 13:21:23,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5818 states. [2024-12-01 13:21:23,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5818 to 5698. [2024-12-01 13:21:23,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5698 states, 4594 states have (on average 1.6203744013931214) internal successors, (7444), 4700 states have internal predecessors, (7444), 844 states have call successors, (844), 246 states have call predecessors, (844), 259 states have return successors, (1248), 793 states have call predecessors, (1248), 830 states have call successors, (1248) [2024-12-01 13:21:23,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5698 states to 5698 states and 9536 transitions. [2024-12-01 13:21:23,618 INFO L78 Accepts]: Start accepts. Automaton has 5698 states and 9536 transitions. Word has length 135 [2024-12-01 13:21:23,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:21:23,618 INFO L471 AbstractCegarLoop]: Abstraction has 5698 states and 9536 transitions. [2024-12-01 13:21:23,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2024-12-01 13:21:23,618 INFO L276 IsEmpty]: Start isEmpty. Operand 5698 states and 9536 transitions. [2024-12-01 13:21:23,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-12-01 13:21:23,624 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:21:23,625 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:21:23,635 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-12-01 13:21:23,825 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_161526a5-3698-49c2-a32c-8a2771591394/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:21:23,825 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:21:23,826 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:21:23,826 INFO L85 PathProgramCache]: Analyzing trace with hash -2128533161, now seen corresponding path program 1 times [2024-12-01 13:21:23,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:21:23,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71127279] [2024-12-01 13:21:23,826 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:21:23,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:21:23,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:21:23,935 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-12-01 13:21:23,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:21:23,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71127279] [2024-12-01 13:21:23,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71127279] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:21:23,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:21:23,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-01 13:21:23,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288184437] [2024-12-01 13:21:23,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:21:23,936 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-01 13:21:23,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:21:23,937 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-01 13:21:23,937 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-01 13:21:23,937 INFO L87 Difference]: Start difference. First operand 5698 states and 9536 transitions. Second operand has 7 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-12-01 13:21:24,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:21:24,141 INFO L93 Difference]: Finished difference Result 11410 states and 19100 transitions. [2024-12-01 13:21:24,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-01 13:21:24,142 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 136 [2024-12-01 13:21:24,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:21:24,171 INFO L225 Difference]: With dead ends: 11410 [2024-12-01 13:21:24,172 INFO L226 Difference]: Without dead ends: 5820 [2024-12-01 13:21:24,192 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-01 13:21:24,192 INFO L435 NwaCegarLoop]: 955 mSDtfsCounter, 126 mSDsluCounter, 4652 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 5607 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 13:21:24,192 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 5607 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 13:21:24,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5820 states. [2024-12-01 13:21:24,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5820 to 5698. [2024-12-01 13:21:24,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5698 states, 4594 states have (on average 1.6203744013931214) internal successors, (7444), 4700 states have internal predecessors, (7444), 844 states have call successors, (844), 246 states have call predecessors, (844), 259 states have return successors, (1248), 793 states have call predecessors, (1248), 830 states have call successors, (1248) [2024-12-01 13:21:24,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5698 states to 5698 states and 9536 transitions. [2024-12-01 13:21:24,412 INFO L78 Accepts]: Start accepts. Automaton has 5698 states and 9536 transitions. Word has length 136 [2024-12-01 13:21:24,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:21:24,412 INFO L471 AbstractCegarLoop]: Abstraction has 5698 states and 9536 transitions. [2024-12-01 13:21:24,412 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-12-01 13:21:24,413 INFO L276 IsEmpty]: Start isEmpty. Operand 5698 states and 9536 transitions. [2024-12-01 13:21:24,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-12-01 13:21:24,417 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:21:24,417 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:21:24,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-12-01 13:21:24,417 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:21:24,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:21:24,417 INFO L85 PathProgramCache]: Analyzing trace with hash -185086961, now seen corresponding path program 1 times [2024-12-01 13:21:24,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:21:24,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362972285] [2024-12-01 13:21:24,418 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:21:24,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:21:24,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:21:24,504 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-12-01 13:21:24,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:21:24,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362972285] [2024-12-01 13:21:24,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362972285] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:21:24,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:21:24,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-01 13:21:24,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358714904] [2024-12-01 13:21:24,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:21:24,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-01 13:21:24,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:21:24,506 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-01 13:21:24,506 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-01 13:21:24,506 INFO L87 Difference]: Start difference. First operand 5698 states and 9536 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, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-12-01 13:21:24,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:21:24,761 INFO L93 Difference]: Finished difference Result 11351 states and 19015 transitions. [2024-12-01 13:21:24,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-01 13:21:24,762 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, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 136 [2024-12-01 13:21:24,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:21:24,803 INFO L225 Difference]: With dead ends: 11351 [2024-12-01 13:21:24,804 INFO L226 Difference]: Without dead ends: 5656 [2024-12-01 13:21:24,826 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-01 13:21:24,827 INFO L435 NwaCegarLoop]: 956 mSDtfsCounter, 8 mSDsluCounter, 1906 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2862 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 13:21:24,827 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 2862 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 13:21:24,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5656 states. [2024-12-01 13:21:25,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5656 to 5656. [2024-12-01 13:21:25,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5656 states, 4555 states have (on average 1.6182217343578484) internal successors, (7371), 4659 states have internal predecessors, (7371), 843 states have call successors, (843), 246 states have call predecessors, (843), 257 states have return successors, (1245), 792 states have call predecessors, (1245), 829 states have call successors, (1245) [2024-12-01 13:21:25,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5656 states to 5656 states and 9459 transitions. [2024-12-01 13:21:25,067 INFO L78 Accepts]: Start accepts. Automaton has 5656 states and 9459 transitions. Word has length 136 [2024-12-01 13:21:25,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:21:25,067 INFO L471 AbstractCegarLoop]: Abstraction has 5656 states and 9459 transitions. [2024-12-01 13:21:25,067 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, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-12-01 13:21:25,068 INFO L276 IsEmpty]: Start isEmpty. Operand 5656 states and 9459 transitions. [2024-12-01 13:21:25,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-12-01 13:21:25,072 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:21:25,072 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:21:25,072 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-12-01 13:21:25,072 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:21:25,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:21:25,073 INFO L85 PathProgramCache]: Analyzing trace with hash -471885350, now seen corresponding path program 1 times [2024-12-01 13:21:25,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:21:25,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504383699] [2024-12-01 13:21:25,073 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:21:25,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:21:25,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:21:25,213 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-12-01 13:21:25,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:21:25,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504383699] [2024-12-01 13:21:25,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504383699] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:21:25,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:21:25,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-01 13:21:25,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839535912] [2024-12-01 13:21:25,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:21:25,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-01 13:21:25,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:21:25,215 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-01 13:21:25,215 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-01 13:21:25,215 INFO L87 Difference]: Start difference. First operand 5656 states and 9459 transitions. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 6 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2024-12-01 13:21:28,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:21:28,330 INFO L93 Difference]: Finished difference Result 15140 states and 26375 transitions. [2024-12-01 13:21:28,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-01 13:21:28,331 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 6 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) Word has length 137 [2024-12-01 13:21:28,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:21:28,364 INFO L225 Difference]: With dead ends: 15140 [2024-12-01 13:21:28,364 INFO L226 Difference]: Without dead ends: 9554 [2024-12-01 13:21:28,387 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-12-01 13:21:28,388 INFO L435 NwaCegarLoop]: 703 mSDtfsCounter, 3901 mSDsluCounter, 975 mSDsCounter, 0 mSdLazyCounter, 4112 mSolverCounterSat, 968 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3939 SdHoareTripleChecker+Valid, 1678 SdHoareTripleChecker+Invalid, 5080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 968 IncrementalHoareTripleChecker+Valid, 4112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-12-01 13:21:28,388 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3939 Valid, 1678 Invalid, 5080 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [968 Valid, 4112 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-12-01 13:21:28,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9554 states. [2024-12-01 13:21:28,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9554 to 8736. [2024-12-01 13:21:28,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8736 states, 6950 states have (on average 1.5964028776978416) internal successors, (11095), 7138 states have internal predecessors, (11095), 1381 states have call successors, (1381), 372 states have call predecessors, (1381), 404 states have return successors, (2059), 1324 states have call predecessors, (2059), 1361 states have call successors, (2059) [2024-12-01 13:21:28,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8736 states to 8736 states and 14535 transitions. [2024-12-01 13:21:28,826 INFO L78 Accepts]: Start accepts. Automaton has 8736 states and 14535 transitions. Word has length 137 [2024-12-01 13:21:28,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:21:28,826 INFO L471 AbstractCegarLoop]: Abstraction has 8736 states and 14535 transitions. [2024-12-01 13:21:28,826 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 6 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2024-12-01 13:21:28,826 INFO L276 IsEmpty]: Start isEmpty. Operand 8736 states and 14535 transitions. [2024-12-01 13:21:28,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-12-01 13:21:28,831 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:21:28,831 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:21:28,831 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-12-01 13:21:28,831 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:21:28,832 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:21:28,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1688330413, now seen corresponding path program 1 times [2024-12-01 13:21:28,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:21:28,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316666730] [2024-12-01 13:21:28,832 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:21:28,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:21:28,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:21:29,015 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-12-01 13:21:29,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:21:29,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316666730] [2024-12-01 13:21:29,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316666730] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:21:29,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:21:29,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-01 13:21:29,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007953828] [2024-12-01 13:21:29,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:21:29,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-01 13:21:29,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:21:29,016 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-01 13:21:29,016 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-01 13:21:29,017 INFO L87 Difference]: Start difference. First operand 8736 states and 14535 transitions. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 6 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2024-12-01 13:21:32,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:21:32,263 INFO L93 Difference]: Finished difference Result 26057 states and 45579 transitions. [2024-12-01 13:21:32,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-01 13:21:32,264 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 6 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) Word has length 138 [2024-12-01 13:21:32,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:21:32,328 INFO L225 Difference]: With dead ends: 26057 [2024-12-01 13:21:32,328 INFO L226 Difference]: Without dead ends: 17391 [2024-12-01 13:21:32,372 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-12-01 13:21:32,373 INFO L435 NwaCegarLoop]: 708 mSDtfsCounter, 3929 mSDsluCounter, 999 mSDsCounter, 0 mSdLazyCounter, 4080 mSolverCounterSat, 993 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3968 SdHoareTripleChecker+Valid, 1707 SdHoareTripleChecker+Invalid, 5073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 993 IncrementalHoareTripleChecker+Valid, 4080 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-12-01 13:21:32,373 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3968 Valid, 1707 Invalid, 5073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [993 Valid, 4080 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-12-01 13:21:32,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17391 states. [2024-12-01 13:21:33,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17391 to 15612. [2024-12-01 13:21:33,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15612 states, 12180 states have (on average 1.575287356321839) internal successors, (19187), 12575 states have internal predecessors, (19187), 2700 states have call successors, (2700), 624 states have call predecessors, (2700), 731 states have return successors, (4108), 2652 states have call predecessors, (4108), 2668 states have call successors, (4108) [2024-12-01 13:21:33,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15612 states to 15612 states and 25995 transitions. [2024-12-01 13:21:33,167 INFO L78 Accepts]: Start accepts. Automaton has 15612 states and 25995 transitions. Word has length 138 [2024-12-01 13:21:33,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:21:33,167 INFO L471 AbstractCegarLoop]: Abstraction has 15612 states and 25995 transitions. [2024-12-01 13:21:33,167 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 6 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2024-12-01 13:21:33,167 INFO L276 IsEmpty]: Start isEmpty. Operand 15612 states and 25995 transitions. [2024-12-01 13:21:33,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-12-01 13:21:33,170 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:21:33,170 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:21:33,170 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-12-01 13:21:33,170 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:21:33,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:21:33,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1192538923, now seen corresponding path program 1 times [2024-12-01 13:21:33,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:21:33,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779584736] [2024-12-01 13:21:33,170 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:21:33,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:21:33,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:21:33,270 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-12-01 13:21:33,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:21:33,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779584736] [2024-12-01 13:21:33,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779584736] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:21:33,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:21:33,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-01 13:21:33,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967682375] [2024-12-01 13:21:33,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:21:33,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-01 13:21:33,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:21:33,272 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-01 13:21:33,272 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-01 13:21:33,272 INFO L87 Difference]: Start difference. First operand 15612 states and 25995 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 6 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2024-12-01 13:21:37,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:21:37,499 INFO L93 Difference]: Finished difference Result 51515 states and 91729 transitions. [2024-12-01 13:21:37,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-01 13:21:37,499 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 6 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) Word has length 139 [2024-12-01 13:21:37,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:21:37,714 INFO L225 Difference]: With dead ends: 51515 [2024-12-01 13:21:37,714 INFO L226 Difference]: Without dead ends: 35973 [2024-12-01 13:21:37,869 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-12-01 13:21:37,870 INFO L435 NwaCegarLoop]: 720 mSDtfsCounter, 3958 mSDsluCounter, 1023 mSDsCounter, 0 mSdLazyCounter, 4084 mSolverCounterSat, 1004 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3998 SdHoareTripleChecker+Valid, 1743 SdHoareTripleChecker+Invalid, 5088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1004 IncrementalHoareTripleChecker+Valid, 4084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-12-01 13:21:37,870 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3998 Valid, 1743 Invalid, 5088 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1004 Valid, 4084 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-12-01 13:21:37,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35973 states. [2024-12-01 13:21:39,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35973 to 31578. [2024-12-01 13:21:39,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31578 states, 24023 states have (on average 1.5539274861590975) internal successors, (37330), 24946 states have internal predecessors, (37330), 6061 states have call successors, (6061), 1128 states have call predecessors, (6061), 1493 states have return successors, (9533), 6100 states have call predecessors, (9533), 6005 states have call successors, (9533) [2024-12-01 13:21:39,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31578 states to 31578 states and 52924 transitions. [2024-12-01 13:21:39,544 INFO L78 Accepts]: Start accepts. Automaton has 31578 states and 52924 transitions. Word has length 139 [2024-12-01 13:21:39,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:21:39,544 INFO L471 AbstractCegarLoop]: Abstraction has 31578 states and 52924 transitions. [2024-12-01 13:21:39,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 6 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2024-12-01 13:21:39,544 INFO L276 IsEmpty]: Start isEmpty. Operand 31578 states and 52924 transitions. [2024-12-01 13:21:39,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-12-01 13:21:39,548 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:21:39,548 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:21:39,548 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-12-01 13:21:39,548 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:21:39,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:21:39,549 INFO L85 PathProgramCache]: Analyzing trace with hash 842978158, now seen corresponding path program 1 times [2024-12-01 13:21:39,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:21:39,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386698329] [2024-12-01 13:21:39,549 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:21:39,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:21:39,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:21:39,642 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-12-01 13:21:39,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:21:39,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386698329] [2024-12-01 13:21:39,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386698329] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:21:39,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:21:39,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-01 13:21:39,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854495998] [2024-12-01 13:21:39,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:21:39,642 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-01 13:21:39,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:21:39,643 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-01 13:21:39,643 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-01 13:21:39,643 INFO L87 Difference]: Start difference. First operand 31578 states and 52924 transitions. Second operand has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 6 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2024-12-01 13:21:47,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:21:47,207 INFO L93 Difference]: Finished difference Result 113705 states and 207334 transitions. [2024-12-01 13:21:47,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-01 13:21:47,207 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 6 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) Word has length 140 [2024-12-01 13:21:47,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:21:47,582 INFO L225 Difference]: With dead ends: 113705 [2024-12-01 13:21:47,582 INFO L226 Difference]: Without dead ends: 82197 [2024-12-01 13:21:47,848 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-12-01 13:21:47,849 INFO L435 NwaCegarLoop]: 732 mSDtfsCounter, 3997 mSDsluCounter, 1036 mSDsCounter, 0 mSdLazyCounter, 4098 mSolverCounterSat, 1009 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4038 SdHoareTripleChecker+Valid, 1768 SdHoareTripleChecker+Invalid, 5107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1009 IncrementalHoareTripleChecker+Valid, 4098 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-12-01 13:21:47,849 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4038 Valid, 1768 Invalid, 5107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1009 Valid, 4098 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-12-01 13:21:47,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82197 states. [2024-12-01 13:21:51,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82197 to 70448. [2024-12-01 13:21:51,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70448 states, 52118 states have (on average 1.5328485360144288) internal successors, (79889), 54433 states have internal predecessors, (79889), 14958 states have call successors, (14958), 2136 states have call predecessors, (14958), 3371 states have return successors, (24568), 15396 states have call predecessors, (24568), 14854 states have call successors, (24568) [2024-12-01 13:21:52,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70448 states to 70448 states and 119415 transitions. [2024-12-01 13:21:52,355 INFO L78 Accepts]: Start accepts. Automaton has 70448 states and 119415 transitions. Word has length 140 [2024-12-01 13:21:52,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:21:52,356 INFO L471 AbstractCegarLoop]: Abstraction has 70448 states and 119415 transitions. [2024-12-01 13:21:52,356 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 6 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2024-12-01 13:21:52,356 INFO L276 IsEmpty]: Start isEmpty. Operand 70448 states and 119415 transitions. [2024-12-01 13:21:52,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-12-01 13:21:52,361 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:21:52,361 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:21:52,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-12-01 13:21:52,361 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:21:52,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:21:52,361 INFO L85 PathProgramCache]: Analyzing trace with hash -929618992, now seen corresponding path program 1 times [2024-12-01 13:21:52,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:21:52,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070792944] [2024-12-01 13:21:52,361 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:21:52,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:21:52,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:21:52,552 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-12-01 13:21:52,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:21:52,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070792944] [2024-12-01 13:21:52,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070792944] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:21:52,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:21:52,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-01 13:21:52,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210496856] [2024-12-01 13:21:52,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:21:52,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-01 13:21:52,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:21:52,553 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-01 13:21:52,553 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-01 13:21:52,553 INFO L87 Difference]: Start difference. First operand 70448 states and 119415 transitions. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 6 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2024-12-01 13:22:09,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:22:09,104 INFO L93 Difference]: Finished difference Result 273479 states and 513029 transitions. [2024-12-01 13:22:09,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-01 13:22:09,104 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 6 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) Word has length 141 [2024-12-01 13:22:09,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:22:10,205 INFO L225 Difference]: With dead ends: 273479 [2024-12-01 13:22:10,205 INFO L226 Difference]: Without dead ends: 203101 [2024-12-01 13:22:11,195 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-12-01 13:22:11,196 INFO L435 NwaCegarLoop]: 715 mSDtfsCounter, 4048 mSDsluCounter, 1037 mSDsCounter, 0 mSdLazyCounter, 4093 mSolverCounterSat, 1039 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4090 SdHoareTripleChecker+Valid, 1752 SdHoareTripleChecker+Invalid, 5132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1039 IncrementalHoareTripleChecker+Valid, 4093 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-12-01 13:22:11,196 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4090 Valid, 1752 Invalid, 5132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1039 Valid, 4093 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-12-01 13:22:11,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203101 states. [2024-12-01 13:22:22,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203101 to 169974. [2024-12-01 13:22:22,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169974 states, 122369 states have (on average 1.5133571411059992) internal successors, (185188), 128464 states have internal predecessors, (185188), 39319 states have call successors, (39319), 4152 states have call predecessors, (39319), 8285 states have return successors, (67793), 41284 states have call predecessors, (67793), 39119 states have call successors, (67793) [2024-12-01 13:22:24,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169974 states to 169974 states and 292300 transitions. [2024-12-01 13:22:25,131 INFO L78 Accepts]: Start accepts. Automaton has 169974 states and 292300 transitions. Word has length 141 [2024-12-01 13:22:25,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:22:25,131 INFO L471 AbstractCegarLoop]: Abstraction has 169974 states and 292300 transitions. [2024-12-01 13:22:25,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 6 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2024-12-01 13:22:25,132 INFO L276 IsEmpty]: Start isEmpty. Operand 169974 states and 292300 transitions. [2024-12-01 13:22:25,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-12-01 13:22:25,139 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:22:25,139 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:22:25,139 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-12-01 13:22:25,139 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:22:25,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:22:25,140 INFO L85 PathProgramCache]: Analyzing trace with hash 608721038, now seen corresponding path program 1 times [2024-12-01 13:22:25,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:22:25,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623196799] [2024-12-01 13:22:25,140 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:22:25,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:22:25,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:22:25,309 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-12-01 13:22:25,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:22:25,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623196799] [2024-12-01 13:22:25,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623196799] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:22:25,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:22:25,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-01 13:22:25,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733212014] [2024-12-01 13:22:25,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:22:25,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-01 13:22:25,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:22:25,310 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-01 13:22:25,311 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-01 13:22:25,311 INFO L87 Difference]: Start difference. First operand 169974 states and 292300 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 6 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2024-12-01 13:22:54,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:22:54,872 INFO L93 Difference]: Finished difference Result 503565 states and 876479 transitions. [2024-12-01 13:22:54,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-12-01 13:22:54,872 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 6 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) Word has length 141 [2024-12-01 13:22:54,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:22:57,096 INFO L225 Difference]: With dead ends: 503565 [2024-12-01 13:22:57,096 INFO L226 Difference]: Without dead ends: 333693 [2024-12-01 13:22:58,913 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=445, Unknown=0, NotChecked=0, Total=552 [2024-12-01 13:22:58,914 INFO L435 NwaCegarLoop]: 422 mSDtfsCounter, 2806 mSDsluCounter, 2352 mSDsCounter, 0 mSdLazyCounter, 6763 mSolverCounterSat, 600 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2908 SdHoareTripleChecker+Valid, 2774 SdHoareTripleChecker+Invalid, 7363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 600 IncrementalHoareTripleChecker+Valid, 6763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-12-01 13:22:58,914 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2908 Valid, 2774 Invalid, 7363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [600 Valid, 6763 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-12-01 13:22:59,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333693 states. [2024-12-01 13:23:20,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333693 to 314508. [2024-12-01 13:23:20,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314508 states, 226513 states have (on average 1.4999315712563959) internal successors, (339754), 237166 states have internal predecessors, (339754), 71676 states have call successors, (71676), 7683 states have call predecessors, (71676), 16318 states have return successors, (121630), 76106 states have call predecessors, (121630), 71441 states have call successors, (121630) [2024-12-01 13:23:23,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314508 states to 314508 states and 533060 transitions. [2024-12-01 13:23:24,150 INFO L78 Accepts]: Start accepts. Automaton has 314508 states and 533060 transitions. Word has length 141 [2024-12-01 13:23:24,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:23:24,151 INFO L471 AbstractCegarLoop]: Abstraction has 314508 states and 533060 transitions. [2024-12-01 13:23:24,151 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 6 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2024-12-01 13:23:24,151 INFO L276 IsEmpty]: Start isEmpty. Operand 314508 states and 533060 transitions. [2024-12-01 13:23:24,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-12-01 13:23:24,155 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:23:24,155 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:23:24,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-12-01 13:23:24,155 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:23:24,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:23:24,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1422863673, now seen corresponding path program 1 times [2024-12-01 13:23:24,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:23:24,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374311769] [2024-12-01 13:23:24,156 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:23:24,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:23:24,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:23:24,308 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-12-01 13:23:24,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:23:24,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374311769] [2024-12-01 13:23:24,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374311769] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:23:24,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:23:24,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-01 13:23:24,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675236239] [2024-12-01 13:23:24,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:23:24,309 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-01 13:23:24,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:23:24,310 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-01 13:23:24,310 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-01 13:23:24,310 INFO L87 Difference]: Start difference. First operand 314508 states and 533060 transitions. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 5 states have internal predecessors, (97), 2 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-01 13:23:50,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:23:50,522 INFO L93 Difference]: Finished difference Result 594912 states and 1016524 transitions. [2024-12-01 13:23:50,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-01 13:23:50,522 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 5 states have internal predecessors, (97), 2 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) Word has length 147 [2024-12-01 13:23:50,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:23:53,353 INFO L225 Difference]: With dead ends: 594912 [2024-12-01 13:23:53,354 INFO L226 Difference]: Without dead ends: 320844 [2024-12-01 13:23:55,946 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-01 13:23:55,946 INFO L435 NwaCegarLoop]: 970 mSDtfsCounter, 0 mSDsluCounter, 4813 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5783 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 13:23:55,947 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 5783 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 13:23:56,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320844 states. [2024-12-01 13:24:16,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320844 to 319194. [2024-12-01 13:24:16,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319194 states, 230011 states have (on average 1.492328627761281) internal successors, (343252), 240433 states have internal predecessors, (343252), 71676 states have call successors, (71676), 7683 states have call predecessors, (71676), 17506 states have return successors, (127735), 77525 states have call predecessors, (127735), 71441 states have call successors, (127735) [2024-12-01 13:24:20,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319194 states to 319194 states and 542663 transitions. [2024-12-01 13:24:20,851 INFO L78 Accepts]: Start accepts. Automaton has 319194 states and 542663 transitions. Word has length 147 [2024-12-01 13:24:20,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:24:20,852 INFO L471 AbstractCegarLoop]: Abstraction has 319194 states and 542663 transitions. [2024-12-01 13:24:20,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 5 states have internal predecessors, (97), 2 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-01 13:24:20,852 INFO L276 IsEmpty]: Start isEmpty. Operand 319194 states and 542663 transitions. [2024-12-01 13:24:20,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-12-01 13:24:20,856 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:24:20,856 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:24:20,857 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-12-01 13:24:20,857 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:24:20,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:24:20,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1862144311, now seen corresponding path program 1 times [2024-12-01 13:24:20,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:24:20,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56809848] [2024-12-01 13:24:20,857 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:24:20,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:24:20,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:24:20,942 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-12-01 13:24:20,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:24:20,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56809848] [2024-12-01 13:24:20,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56809848] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:24:20,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:24:20,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-01 13:24:20,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227670221] [2024-12-01 13:24:20,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:24:20,943 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-01 13:24:20,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:24:20,943 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-01 13:24:20,943 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-01 13:24:20,943 INFO L87 Difference]: Start difference. First operand 319194 states and 542663 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-01 13:24:43,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:24:43,707 INFO L93 Difference]: Finished difference Result 597902 states and 1014777 transitions. [2024-12-01 13:24:43,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-01 13:24:43,707 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 147 [2024-12-01 13:24:43,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:24:45,579 INFO L225 Difference]: With dead ends: 597902 [2024-12-01 13:24:45,579 INFO L226 Difference]: Without dead ends: 319210