./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec1_product30.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/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_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec1_product30.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/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_96e9d523-d809-4cac-910e-a6380f24ee9e/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 b5032f6ecc7a7304ce28757cb2a6aad82a2091f27bc978e38426a37817981d0c --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-01 13:16:21,209 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-01 13:16:21,270 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-01 13:16:21,275 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-01 13:16:21,275 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-01 13:16:21,298 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-01 13:16:21,299 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-01 13:16:21,299 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-01 13:16:21,299 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-01 13:16:21,299 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-01 13:16:21,299 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-01 13:16:21,300 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-01 13:16:21,300 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-01 13:16:21,300 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-01 13:16:21,300 INFO L153 SettingsManager]: * Use SBE=true [2024-12-01 13:16:21,300 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-01 13:16:21,300 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-01 13:16:21,300 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-01 13:16:21,300 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-01 13:16:21,301 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-01 13:16:21,301 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-01 13:16:21,301 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-01 13:16:21,301 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-01 13:16:21,301 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-01 13:16:21,301 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-01 13:16:21,301 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-01 13:16:21,301 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-01 13:16:21,301 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-01 13:16:21,301 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-01 13:16:21,301 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-01 13:16:21,302 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-01 13:16:21,302 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-01 13:16:21,302 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-01 13:16:21,302 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-01 13:16:21,302 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-01 13:16:21,302 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-01 13:16:21,302 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-01 13:16:21,302 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-01 13:16:21,302 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-01 13:16:21,302 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-01 13:16:21,302 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-01 13:16:21,303 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-01 13:16:21,303 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-01 13:16:21,303 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-01 13:16:21,303 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-01 13:16:21,303 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-01 13:16:21,303 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-01 13:16:21,303 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-01 13:16:21,303 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_96e9d523-d809-4cac-910e-a6380f24ee9e/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 -> b5032f6ecc7a7304ce28757cb2a6aad82a2091f27bc978e38426a37817981d0c [2024-12-01 13:16:21,554 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-01 13:16:21,563 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-01 13:16:21,566 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-01 13:16:21,568 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-01 13:16:21,568 INFO L274 PluginConnector]: CDTParser initialized [2024-12-01 13:16:21,569 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/product-lines/elevator_spec1_product30.cil.c [2024-12-01 13:16:24,391 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/data/16e359253/1e8b1c7128f5452a919e77e839c99810/FLAG5b14ec291 [2024-12-01 13:16:24,731 INFO L384 CDTParser]: Found 1 translation units. [2024-12-01 13:16:24,732 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/sv-benchmarks/c/product-lines/elevator_spec1_product30.cil.c [2024-12-01 13:16:24,755 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/data/16e359253/1e8b1c7128f5452a919e77e839c99810/FLAG5b14ec291 [2024-12-01 13:16:24,950 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/data/16e359253/1e8b1c7128f5452a919e77e839c99810 [2024-12-01 13:16:24,952 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-01 13:16:24,953 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-01 13:16:24,955 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-01 13:16:24,955 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-01 13:16:24,960 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-01 13:16:24,961 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 01:16:24" (1/1) ... [2024-12-01 13:16:24,962 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cec1cd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:16:24, skipping insertion in model container [2024-12-01 13:16:24,962 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 01:16:24" (1/1) ... [2024-12-01 13:16:25,010 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-01 13:16:25,174 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_96e9d523-d809-4cac-910e-a6380f24ee9e/sv-benchmarks/c/product-lines/elevator_spec1_product30.cil.c[1545,1558] [2024-12-01 13:16:25,507 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-01 13:16:25,520 INFO L200 MainTranslator]: Completed pre-run [2024-12-01 13:16:25,530 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [48] [2024-12-01 13:16:25,531 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [57] [2024-12-01 13:16:25,532 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [159] [2024-12-01 13:16:25,532 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [525] [2024-12-01 13:16:25,532 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [541] [2024-12-01 13:16:25,532 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [579] [2024-12-01 13:16:25,532 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [932] [2024-12-01 13:16:25,532 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [1604] [2024-12-01 13:16:25,532 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1724] [2024-12-01 13:16:25,533 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification1_spec.i","") [3302] [2024-12-01 13:16:25,536 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_96e9d523-d809-4cac-910e-a6380f24ee9e/sv-benchmarks/c/product-lines/elevator_spec1_product30.cil.c[1545,1558] [2024-12-01 13:16:25,633 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-01 13:16:25,661 INFO L204 MainTranslator]: Completed translation [2024-12-01 13:16:25,662 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:16:25 WrapperNode [2024-12-01 13:16:25,662 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-01 13:16:25,663 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-01 13:16:25,663 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-01 13:16:25,663 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-01 13:16:25,669 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:16:25" (1/1) ... [2024-12-01 13:16:25,687 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:16:25" (1/1) ... [2024-12-01 13:16:25,720 INFO L138 Inliner]: procedures = 95, calls = 348, calls flagged for inlining = 28, calls inlined = 24, statements flattened = 907 [2024-12-01 13:16:25,721 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-01 13:16:25,721 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-01 13:16:25,721 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-01 13:16:25,721 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-01 13:16:25,732 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:16:25" (1/1) ... [2024-12-01 13:16:25,732 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:16:25" (1/1) ... [2024-12-01 13:16:25,738 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:16:25" (1/1) ... [2024-12-01 13:16:25,764 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 13:16:25,764 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:16:25" (1/1) ... [2024-12-01 13:16:25,764 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:16:25" (1/1) ... [2024-12-01 13:16:25,785 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:16:25" (1/1) ... [2024-12-01 13:16:25,788 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:16:25" (1/1) ... [2024-12-01 13:16:25,802 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:16:25" (1/1) ... [2024-12-01 13:16:25,808 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:16:25" (1/1) ... [2024-12-01 13:16:25,825 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:16:25" (1/1) ... [2024-12-01 13:16:25,834 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-01 13:16:25,835 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-01 13:16:25,836 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-01 13:16:25,836 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-01 13:16:25,837 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:16:25" (1/1) ... [2024-12-01 13:16:25,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-01 13:16:25,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 13:16:25,872 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-01 13:16:25,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-01 13:16:25,903 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2024-12-01 13:16:25,903 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2024-12-01 13:16:25,903 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-01 13:16:25,903 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2024-12-01 13:16:25,904 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2024-12-01 13:16:25,904 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2024-12-01 13:16:25,904 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2024-12-01 13:16:25,904 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-12-01 13:16:25,904 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-12-01 13:16:25,904 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-12-01 13:16:25,904 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-12-01 13:16:25,904 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-12-01 13:16:25,904 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-12-01 13:16:25,904 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2024-12-01 13:16:25,904 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2024-12-01 13:16:25,904 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-12-01 13:16:25,904 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-12-01 13:16:25,905 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-12-01 13:16:25,905 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-12-01 13:16:25,905 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2024-12-01 13:16:25,905 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2024-12-01 13:16:25,905 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-12-01 13:16:25,905 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-12-01 13:16:25,905 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-12-01 13:16:25,905 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-12-01 13:16:25,905 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-12-01 13:16:25,905 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-12-01 13:16:25,905 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-12-01 13:16:25,905 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-12-01 13:16:25,905 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2024-12-01 13:16:25,905 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2024-12-01 13:16:25,906 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-12-01 13:16:25,906 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-12-01 13:16:25,906 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-12-01 13:16:25,906 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-12-01 13:16:25,906 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-12-01 13:16:25,906 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-12-01 13:16:25,906 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-12-01 13:16:25,906 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-12-01 13:16:25,906 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-12-01 13:16:25,906 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-12-01 13:16:25,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-01 13:16:25,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-01 13:16:25,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-12-01 13:16:25,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-12-01 13:16:25,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-12-01 13:16:25,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-12-01 13:16:25,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-12-01 13:16:25,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-12-01 13:16:25,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-12-01 13:16:25,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-12-01 13:16:25,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-12-01 13:16:25,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-12-01 13:16:25,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-12-01 13:16:25,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-12-01 13:16:25,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-12-01 13:16:25,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-12-01 13:16:25,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-12-01 13:16:25,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-12-01 13:16:25,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2024-12-01 13:16:25,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2024-12-01 13:16:25,907 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2024-12-01 13:16:25,907 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2024-12-01 13:16:25,907 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-12-01 13:16:25,908 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-12-01 13:16:25,908 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-12-01 13:16:25,908 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-12-01 13:16:25,908 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-12-01 13:16:25,908 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-12-01 13:16:25,908 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull [2024-12-01 13:16:25,908 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull [2024-12-01 13:16:25,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-01 13:16:25,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-01 13:16:25,908 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-12-01 13:16:25,908 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-12-01 13:16:26,097 INFO L234 CfgBuilder]: Building ICFG [2024-12-01 13:16:26,100 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-01 13:16:27,462 INFO L? ?]: Removed 462 outVars from TransFormulas that were not future-live. [2024-12-01 13:16:27,463 INFO L283 CfgBuilder]: Performing block encoding [2024-12-01 13:16:27,487 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-01 13:16:27,487 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-01 13:16:27,487 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 01:16:27 BoogieIcfgContainer [2024-12-01 13:16:27,488 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-01 13:16:27,490 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-01 13:16:27,490 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-01 13:16:27,496 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-01 13:16:27,496 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 01:16:24" (1/3) ... [2024-12-01 13:16:27,497 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15eb21e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 01:16:27, skipping insertion in model container [2024-12-01 13:16:27,497 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:16:25" (2/3) ... [2024-12-01 13:16:27,497 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15eb21e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 01:16:27, skipping insertion in model container [2024-12-01 13:16:27,497 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 01:16:27" (3/3) ... [2024-12-01 13:16:27,499 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product30.cil.c [2024-12-01 13:16:27,515 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-01 13:16:27,518 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec1_product30.cil.c that has 27 procedures, 587 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-01 13:16:27,604 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-01 13:16:27,616 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;@e0d6883, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-01 13:16:27,616 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-01 13:16:27,622 INFO L276 IsEmpty]: Start isEmpty. Operand has 587 states, 458 states have (on average 1.6899563318777293) internal successors, (774), 481 states have internal predecessors, (774), 101 states have call successors, (101), 26 states have call predecessors, (101), 26 states have return successors, (101), 94 states have call predecessors, (101), 101 states have call successors, (101) [2024-12-01 13:16:27,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-12-01 13:16:27,638 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:16:27,638 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:16:27,639 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:16:27,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:16:27,644 INFO L85 PathProgramCache]: Analyzing trace with hash 244447473, now seen corresponding path program 1 times [2024-12-01 13:16:27,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:16:27,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136914472] [2024-12-01 13:16:27,653 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:16:27,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:16:27,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:16:28,265 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-12-01 13:16:28,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:16:28,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136914472] [2024-12-01 13:16:28,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136914472] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 13:16:28,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1037298924] [2024-12-01 13:16:28,268 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:16:28,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:16:28,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 13:16:28,271 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 13:16:28,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-01 13:16:28,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:16:28,767 INFO L256 TraceCheckSpWp]: Trace formula consists of 1721 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-01 13:16:28,789 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 13:16:28,810 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-12-01 13:16:28,810 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 13:16:28,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1037298924] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:16:28,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 13:16:28,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 4 [2024-12-01 13:16:28,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979975312] [2024-12-01 13:16:28,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:16:28,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-01 13:16:28,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:16:28,840 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-01 13:16:28,841 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-01 13:16:28,844 INFO L87 Difference]: Start difference. First operand has 587 states, 458 states have (on average 1.6899563318777293) internal successors, (774), 481 states have internal predecessors, (774), 101 states have call successors, (101), 26 states have call predecessors, (101), 26 states have return successors, (101), 94 states have call predecessors, (101), 101 states have call successors, (101) Second operand has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2024-12-01 13:16:28,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:16:28,920 INFO L93 Difference]: Finished difference Result 608 states and 1006 transitions. [2024-12-01 13:16:28,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-01 13:16:28,922 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) Word has length 83 [2024-12-01 13:16:28,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:16:28,940 INFO L225 Difference]: With dead ends: 608 [2024-12-01 13:16:28,941 INFO L226 Difference]: Without dead ends: 579 [2024-12-01 13:16:28,945 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-01 13:16:28,947 INFO L435 NwaCegarLoop]: 967 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 967 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 13:16:28,948 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 967 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 13:16:28,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2024-12-01 13:16:29,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 579. [2024-12-01 13:16:29,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579 states, 452 states have (on average 1.6880530973451326) internal successors, (763), 473 states have internal predecessors, (763), 101 states have call successors, (101), 26 states have call predecessors, (101), 25 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2024-12-01 13:16:29,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 960 transitions. [2024-12-01 13:16:29,031 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 960 transitions. Word has length 83 [2024-12-01 13:16:29,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:16:29,033 INFO L471 AbstractCegarLoop]: Abstraction has 579 states and 960 transitions. [2024-12-01 13:16:29,033 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2024-12-01 13:16:29,033 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 960 transitions. [2024-12-01 13:16:29,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-12-01 13:16:29,038 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:16:29,038 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:16:29,052 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-01 13:16:29,239 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:16:29,239 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:16:29,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:16:29,240 INFO L85 PathProgramCache]: Analyzing trace with hash 2041499455, now seen corresponding path program 1 times [2024-12-01 13:16:29,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:16:29,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052293446] [2024-12-01 13:16:29,240 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:16:29,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:16:29,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:16:29,478 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-12-01 13:16:29,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:16:29,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052293446] [2024-12-01 13:16:29,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052293446] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 13:16:29,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [259913483] [2024-12-01 13:16:29,479 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:16:29,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:16:29,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 13:16:29,482 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 13:16:29,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-01 13:16:29,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:16:29,928 INFO L256 TraceCheckSpWp]: Trace formula consists of 1723 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-01 13:16:29,934 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 13:16:29,992 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-01 13:16:29,992 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 13:16:29,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [259913483] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:16:29,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 13:16:29,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-12-01 13:16:29,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217788972] [2024-12-01 13:16:29,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:16:29,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-01 13:16:29,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:16:29,995 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-01 13:16:29,995 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-01 13:16:29,996 INFO L87 Difference]: Start difference. First operand 579 states and 960 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2024-12-01 13:16:30,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:16:30,090 INFO L93 Difference]: Finished difference Result 1149 states and 1912 transitions. [2024-12-01 13:16:30,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-01 13:16:30,091 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 84 [2024-12-01 13:16:30,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:16:30,097 INFO L225 Difference]: With dead ends: 1149 [2024-12-01 13:16:30,097 INFO L226 Difference]: Without dead ends: 579 [2024-12-01 13:16:30,102 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-01 13:16:30,103 INFO L435 NwaCegarLoop]: 948 mSDtfsCounter, 5 mSDsluCounter, 1890 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2838 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 13:16:30,103 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2838 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 13:16:30,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2024-12-01 13:16:30,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 579. [2024-12-01 13:16:30,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579 states, 452 states have (on average 1.6858407079646018) internal successors, (762), 473 states have internal predecessors, (762), 101 states have call successors, (101), 26 states have call predecessors, (101), 25 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2024-12-01 13:16:30,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 959 transitions. [2024-12-01 13:16:30,139 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 959 transitions. Word has length 84 [2024-12-01 13:16:30,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:16:30,139 INFO L471 AbstractCegarLoop]: Abstraction has 579 states and 959 transitions. [2024-12-01 13:16:30,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2024-12-01 13:16:30,140 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 959 transitions. [2024-12-01 13:16:30,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-12-01 13:16:30,143 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:16:30,143 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:16:30,155 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-01 13:16:30,343 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:16:30,344 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:16:30,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:16:30,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1458489575, now seen corresponding path program 1 times [2024-12-01 13:16:30,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:16:30,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435155876] [2024-12-01 13:16:30,344 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:16:30,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:16:30,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:16:30,517 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-12-01 13:16:30,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:16:30,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435155876] [2024-12-01 13:16:30,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435155876] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 13:16:30,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1327985780] [2024-12-01 13:16:30,518 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:16:30,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:16:30,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 13:16:30,520 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 13:16:30,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-01 13:16:30,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:16:30,896 INFO L256 TraceCheckSpWp]: Trace formula consists of 1725 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-01 13:16:30,900 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 13:16:30,931 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-01 13:16:30,932 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 13:16:30,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1327985780] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:16:30,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 13:16:30,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-12-01 13:16:30,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570272459] [2024-12-01 13:16:30,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:16:30,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-01 13:16:30,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:16:30,934 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-01 13:16:30,934 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-01 13:16:30,934 INFO L87 Difference]: Start difference. First operand 579 states and 959 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2024-12-01 13:16:31,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:16:31,008 INFO L93 Difference]: Finished difference Result 1149 states and 1910 transitions. [2024-12-01 13:16:31,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-01 13:16:31,009 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 86 [2024-12-01 13:16:31,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:16:31,015 INFO L225 Difference]: With dead ends: 1149 [2024-12-01 13:16:31,015 INFO L226 Difference]: Without dead ends: 579 [2024-12-01 13:16:31,018 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-01 13:16:31,019 INFO L435 NwaCegarLoop]: 948 mSDtfsCounter, 4 mSDsluCounter, 1890 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2838 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 13:16:31,020 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2838 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 13:16:31,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2024-12-01 13:16:31,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 579. [2024-12-01 13:16:31,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579 states, 452 states have (on average 1.6836283185840708) internal successors, (761), 473 states have internal predecessors, (761), 101 states have call successors, (101), 26 states have call predecessors, (101), 25 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2024-12-01 13:16:31,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 958 transitions. [2024-12-01 13:16:31,054 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 958 transitions. Word has length 86 [2024-12-01 13:16:31,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:16:31,054 INFO L471 AbstractCegarLoop]: Abstraction has 579 states and 958 transitions. [2024-12-01 13:16:31,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2024-12-01 13:16:31,055 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 958 transitions. [2024-12-01 13:16:31,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-12-01 13:16:31,057 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:16:31,057 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:16:31,069 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-01 13:16:31,257 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:16:31,258 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:16:31,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:16:31,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1758967359, now seen corresponding path program 1 times [2024-12-01 13:16:31,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:16:31,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858116131] [2024-12-01 13:16:31,258 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:16:31,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:16:31,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:16:31,424 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-12-01 13:16:31,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:16:31,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858116131] [2024-12-01 13:16:31,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858116131] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 13:16:31,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [577273397] [2024-12-01 13:16:31,425 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:16:31,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:16:31,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 13:16:31,427 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 13:16:31,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-01 13:16:31,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:16:31,799 INFO L256 TraceCheckSpWp]: Trace formula consists of 1727 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-01 13:16:31,804 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 13:16:31,835 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-01 13:16:31,835 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 13:16:31,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [577273397] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:16:31,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 13:16:31,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-12-01 13:16:31,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168905243] [2024-12-01 13:16:31,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:16:31,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-01 13:16:31,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:16:31,837 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-01 13:16:31,837 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-01 13:16:31,838 INFO L87 Difference]: Start difference. First operand 579 states and 958 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2024-12-01 13:16:31,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:16:31,940 INFO L93 Difference]: Finished difference Result 1156 states and 1917 transitions. [2024-12-01 13:16:31,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-01 13:16:31,941 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 88 [2024-12-01 13:16:31,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:16:31,947 INFO L225 Difference]: With dead ends: 1156 [2024-12-01 13:16:31,947 INFO L226 Difference]: Without dead ends: 588 [2024-12-01 13:16:31,951 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-12-01 13:16:31,952 INFO L435 NwaCegarLoop]: 947 mSDtfsCounter, 13 mSDsluCounter, 1888 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2835 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 13:16:31,952 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2835 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 13:16:31,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2024-12-01 13:16:31,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 588. [2024-12-01 13:16:31,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588 states, 460 states have (on average 1.6804347826086956) internal successors, (773), 481 states have internal predecessors, (773), 101 states have call successors, (101), 27 states have call predecessors, (101), 26 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2024-12-01 13:16:31,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 970 transitions. [2024-12-01 13:16:31,989 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 970 transitions. Word has length 88 [2024-12-01 13:16:31,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:16:31,990 INFO L471 AbstractCegarLoop]: Abstraction has 588 states and 970 transitions. [2024-12-01 13:16:31,990 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2024-12-01 13:16:31,990 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 970 transitions. [2024-12-01 13:16:31,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-12-01 13:16:31,993 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:16:31,993 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:16:32,004 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-01 13:16:32,193 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:16:32,194 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:16:32,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:16:32,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1216304377, now seen corresponding path program 1 times [2024-12-01 13:16:32,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:16:32,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193791393] [2024-12-01 13:16:32,195 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:16:32,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:16:32,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:16:32,369 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-12-01 13:16:32,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:16:32,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193791393] [2024-12-01 13:16:32,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193791393] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 13:16:32,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507746511] [2024-12-01 13:16:32,370 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:16:32,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:16:32,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 13:16:32,372 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 13:16:32,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-01 13:16:32,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:16:32,758 INFO L256 TraceCheckSpWp]: Trace formula consists of 1728 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-01 13:16:32,763 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 13:16:32,796 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-01 13:16:32,796 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 13:16:32,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [507746511] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:16:32,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 13:16:32,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-12-01 13:16:32,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204429271] [2024-12-01 13:16:32,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:16:32,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-01 13:16:32,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:16:32,797 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-01 13:16:32,797 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-01 13:16:32,798 INFO L87 Difference]: Start difference. First operand 588 states and 970 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2024-12-01 13:16:32,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:16:32,894 INFO L93 Difference]: Finished difference Result 1158 states and 1918 transitions. [2024-12-01 13:16:32,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-01 13:16:32,895 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 89 [2024-12-01 13:16:32,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:16:32,900 INFO L225 Difference]: With dead ends: 1158 [2024-12-01 13:16:32,900 INFO L226 Difference]: Without dead ends: 588 [2024-12-01 13:16:32,903 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-12-01 13:16:32,904 INFO L435 NwaCegarLoop]: 947 mSDtfsCounter, 11 mSDsluCounter, 1888 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2835 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 13:16:32,904 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2835 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 13:16:32,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2024-12-01 13:16:32,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 588. [2024-12-01 13:16:32,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588 states, 460 states have (on average 1.6782608695652175) internal successors, (772), 481 states have internal predecessors, (772), 101 states have call successors, (101), 27 states have call predecessors, (101), 26 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2024-12-01 13:16:32,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 969 transitions. [2024-12-01 13:16:32,933 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 969 transitions. Word has length 89 [2024-12-01 13:16:32,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:16:32,934 INFO L471 AbstractCegarLoop]: Abstraction has 588 states and 969 transitions. [2024-12-01 13:16:32,934 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2024-12-01 13:16:32,934 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 969 transitions. [2024-12-01 13:16:32,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-12-01 13:16:32,936 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:16:32,937 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:16:32,949 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-01 13:16:33,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:16:33,138 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:16:33,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:16:33,138 INFO L85 PathProgramCache]: Analyzing trace with hash -946900485, now seen corresponding path program 1 times [2024-12-01 13:16:33,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:16:33,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629650006] [2024-12-01 13:16:33,138 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:16:33,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:16:33,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:16:33,237 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-12-01 13:16:33,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:16:33,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629650006] [2024-12-01 13:16:33,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629650006] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 13:16:33,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989407679] [2024-12-01 13:16:33,238 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:16:33,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:16:33,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 13:16:33,242 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 13:16:33,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-01 13:16:33,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:16:33,605 INFO L256 TraceCheckSpWp]: Trace formula consists of 1729 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-01 13:16:33,608 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 13:16:33,635 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-01 13:16:33,635 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 13:16:33,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1989407679] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:16:33,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 13:16:33,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-12-01 13:16:33,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523994184] [2024-12-01 13:16:33,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:16:33,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-01 13:16:33,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:16:33,637 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-01 13:16:33,637 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-01 13:16:33,637 INFO L87 Difference]: Start difference. First operand 588 states and 969 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2024-12-01 13:16:33,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:16:33,704 INFO L93 Difference]: Finished difference Result 1158 states and 1917 transitions. [2024-12-01 13:16:33,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-01 13:16:33,705 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 90 [2024-12-01 13:16:33,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:16:33,708 INFO L225 Difference]: With dead ends: 1158 [2024-12-01 13:16:33,708 INFO L226 Difference]: Without dead ends: 588 [2024-12-01 13:16:33,711 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-12-01 13:16:33,711 INFO L435 NwaCegarLoop]: 947 mSDtfsCounter, 10 mSDsluCounter, 1888 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2835 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 13:16:33,712 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2835 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 13:16:33,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2024-12-01 13:16:33,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 588. [2024-12-01 13:16:33,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588 states, 460 states have (on average 1.6760869565217391) internal successors, (771), 481 states have internal predecessors, (771), 101 states have call successors, (101), 27 states have call predecessors, (101), 26 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2024-12-01 13:16:33,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 968 transitions. [2024-12-01 13:16:33,730 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 968 transitions. Word has length 90 [2024-12-01 13:16:33,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:16:33,730 INFO L471 AbstractCegarLoop]: Abstraction has 588 states and 968 transitions. [2024-12-01 13:16:33,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2024-12-01 13:16:33,730 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 968 transitions. [2024-12-01 13:16:33,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-12-01 13:16:33,731 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:16:33,731 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:16:33,741 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-01 13:16:33,932 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-12-01 13:16:33,932 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:16:33,932 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:16:33,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1807296075, now seen corresponding path program 1 times [2024-12-01 13:16:33,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:16:33,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272896412] [2024-12-01 13:16:33,933 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:16:33,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:16:33,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:16:34,102 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-01 13:16:34,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:16:34,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272896412] [2024-12-01 13:16:34,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272896412] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 13:16:34,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831680060] [2024-12-01 13:16:34,103 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:16:34,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:16:34,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 13:16:34,105 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 13:16:34,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-01 13:16:34,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:16:34,474 INFO L256 TraceCheckSpWp]: Trace formula consists of 1730 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-12-01 13:16:34,477 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 13:16:34,544 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:16:34,544 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 13:16:34,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1831680060] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:16:34,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 13:16:34,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2024-12-01 13:16:34,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859182306] [2024-12-01 13:16:34,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:16:34,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-01 13:16:34,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:16:34,546 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-01 13:16:34,546 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-12-01 13:16:34,546 INFO L87 Difference]: Start difference. First operand 588 states and 968 transitions. Second operand has 7 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-12-01 13:16:34,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:16:34,654 INFO L93 Difference]: Finished difference Result 1177 states and 1947 transitions. [2024-12-01 13:16:34,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-01 13:16:34,655 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 91 [2024-12-01 13:16:34,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:16:34,659 INFO L225 Difference]: With dead ends: 1177 [2024-12-01 13:16:34,660 INFO L226 Difference]: Without dead ends: 611 [2024-12-01 13:16:34,662 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-12-01 13:16:34,662 INFO L435 NwaCegarLoop]: 948 mSDtfsCounter, 100 mSDsluCounter, 4654 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 5602 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 13:16:34,662 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 5602 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 13:16:34,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2024-12-01 13:16:34,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 607. [2024-12-01 13:16:34,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607 states, 476 states have (on average 1.6743697478991597) internal successors, (797), 499 states have internal predecessors, (797), 102 states have call successors, (102), 27 states have call predecessors, (102), 28 states have return successors, (100), 94 states have call predecessors, (100), 97 states have call successors, (100) [2024-12-01 13:16:34,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 999 transitions. [2024-12-01 13:16:34,682 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 999 transitions. Word has length 91 [2024-12-01 13:16:34,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:16:34,683 INFO L471 AbstractCegarLoop]: Abstraction has 607 states and 999 transitions. [2024-12-01 13:16:34,683 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-12-01 13:16:34,683 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 999 transitions. [2024-12-01 13:16:34,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-12-01 13:16:34,684 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:16:34,684 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:16:34,693 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-01 13:16:34,885 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:16:34,885 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:16:34,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:16:34,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1363684652, now seen corresponding path program 1 times [2024-12-01 13:16:34,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:16:34,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416149855] [2024-12-01 13:16:34,886 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:16:34,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:16:34,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:16:34,977 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-12-01 13:16:34,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:16:34,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416149855] [2024-12-01 13:16:34,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416149855] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 13:16:34,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [154143843] [2024-12-01 13:16:34,977 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:16:34,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:16:34,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 13:16:34,979 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 13:16:34,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-01 13:16:35,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:16:35,358 INFO L256 TraceCheckSpWp]: Trace formula consists of 1729 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-01 13:16:35,361 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 13:16:35,394 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:16:35,394 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 13:16:35,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [154143843] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:16:35,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 13:16:35,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-12-01 13:16:35,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791481621] [2024-12-01 13:16:35,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:16:35,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-01 13:16:35,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:16:35,396 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-01 13:16:35,396 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-01 13:16:35,396 INFO L87 Difference]: Start difference. First operand 607 states and 999 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-12-01 13:16:35,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:16:35,548 INFO L93 Difference]: Finished difference Result 1233 states and 2048 transitions. [2024-12-01 13:16:35,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-01 13:16:35,549 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 91 [2024-12-01 13:16:35,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:16:35,553 INFO L225 Difference]: With dead ends: 1233 [2024-12-01 13:16:35,553 INFO L226 Difference]: Without dead ends: 622 [2024-12-01 13:16:35,555 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-01 13:16:35,556 INFO L435 NwaCegarLoop]: 922 mSDtfsCounter, 76 mSDsluCounter, 1804 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 2726 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 13:16:35,556 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 2726 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 13:16:35,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2024-12-01 13:16:35,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 607. [2024-12-01 13:16:35,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607 states, 476 states have (on average 1.6638655462184875) internal successors, (792), 499 states have internal predecessors, (792), 102 states have call successors, (102), 27 states have call predecessors, (102), 28 states have return successors, (100), 94 states have call predecessors, (100), 97 states have call successors, (100) [2024-12-01 13:16:35,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 994 transitions. [2024-12-01 13:16:35,573 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 994 transitions. Word has length 91 [2024-12-01 13:16:35,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:16:35,573 INFO L471 AbstractCegarLoop]: Abstraction has 607 states and 994 transitions. [2024-12-01 13:16:35,573 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-12-01 13:16:35,573 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 994 transitions. [2024-12-01 13:16:35,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-12-01 13:16:35,575 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:16:35,575 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:16:35,584 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-12-01 13:16:35,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:16:35,776 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:16:35,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:16:35,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1449801150, now seen corresponding path program 1 times [2024-12-01 13:16:35,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:16:35,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773982419] [2024-12-01 13:16:35,776 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:16:35,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:16:35,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:16:35,858 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-01 13:16:35,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:16:35,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773982419] [2024-12-01 13:16:35,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773982419] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 13:16:35,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1778931692] [2024-12-01 13:16:35,858 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:16:35,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:16:35,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 13:16:35,860 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 13:16:35,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-01 13:16:36,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:16:36,234 INFO L256 TraceCheckSpWp]: Trace formula consists of 1731 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-01 13:16:36,239 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 13:16:36,276 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:16:36,276 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 13:16:36,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1778931692] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:16:36,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 13:16:36,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-12-01 13:16:36,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725874691] [2024-12-01 13:16:36,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:16:36,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-01 13:16:36,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:16:36,278 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-01 13:16:36,278 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-01 13:16:36,278 INFO L87 Difference]: Start difference. First operand 607 states and 994 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-12-01 13:16:36,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:16:36,416 INFO L93 Difference]: Finished difference Result 1233 states and 2038 transitions. [2024-12-01 13:16:36,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-01 13:16:36,416 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 93 [2024-12-01 13:16:36,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:16:36,422 INFO L225 Difference]: With dead ends: 1233 [2024-12-01 13:16:36,422 INFO L226 Difference]: Without dead ends: 622 [2024-12-01 13:16:36,425 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-01 13:16:36,426 INFO L435 NwaCegarLoop]: 922 mSDtfsCounter, 75 mSDsluCounter, 1804 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 2726 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 13:16:36,426 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 2726 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 13:16:36,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2024-12-01 13:16:36,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 607. [2024-12-01 13:16:36,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607 states, 476 states have (on average 1.653361344537815) internal successors, (787), 499 states have internal predecessors, (787), 102 states have call successors, (102), 27 states have call predecessors, (102), 28 states have return successors, (100), 94 states have call predecessors, (100), 97 states have call successors, (100) [2024-12-01 13:16:36,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 989 transitions. [2024-12-01 13:16:36,456 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 989 transitions. Word has length 93 [2024-12-01 13:16:36,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:16:36,456 INFO L471 AbstractCegarLoop]: Abstraction has 607 states and 989 transitions. [2024-12-01 13:16:36,456 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-12-01 13:16:36,457 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 989 transitions. [2024-12-01 13:16:36,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-12-01 13:16:36,459 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:16:36,459 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:16:36,471 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-12-01 13:16:36,659 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:16:36,660 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:16:36,660 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:16:36,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1935007860, now seen corresponding path program 1 times [2024-12-01 13:16:36,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:16:36,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196135881] [2024-12-01 13:16:36,660 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:16:36,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:16:36,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:16:36,759 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-12-01 13:16:36,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:16:36,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196135881] [2024-12-01 13:16:36,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196135881] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 13:16:36,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1968968655] [2024-12-01 13:16:36,760 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:16:36,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:16:36,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 13:16:36,762 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 13:16:36,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-01 13:16:37,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:16:37,086 INFO L256 TraceCheckSpWp]: Trace formula consists of 1733 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-01 13:16:37,088 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 13:16:37,114 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:16:37,114 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 13:16:37,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1968968655] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:16:37,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 13:16:37,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-12-01 13:16:37,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096643520] [2024-12-01 13:16:37,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:16:37,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-01 13:16:37,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:16:37,115 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-01 13:16:37,116 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-01 13:16:37,116 INFO L87 Difference]: Start difference. First operand 607 states and 989 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-12-01 13:16:37,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:16:37,280 INFO L93 Difference]: Finished difference Result 1284 states and 2110 transitions. [2024-12-01 13:16:37,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-01 13:16:37,281 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 95 [2024-12-01 13:16:37,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:16:37,285 INFO L225 Difference]: With dead ends: 1284 [2024-12-01 13:16:37,285 INFO L226 Difference]: Without dead ends: 703 [2024-12-01 13:16:37,287 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-12-01 13:16:37,288 INFO L435 NwaCegarLoop]: 955 mSDtfsCounter, 130 mSDsluCounter, 1802 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 2757 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 13:16:37,288 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 2757 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 13:16:37,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2024-12-01 13:16:37,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 658. [2024-12-01 13:16:37,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 658 states, 526 states have (on average 1.6577946768060836) internal successors, (872), 549 states have internal predecessors, (872), 102 states have call successors, (102), 28 states have call predecessors, (102), 29 states have return successors, (99), 94 states have call predecessors, (99), 97 states have call successors, (99) [2024-12-01 13:16:37,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 1073 transitions. [2024-12-01 13:16:37,307 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 1073 transitions. Word has length 95 [2024-12-01 13:16:37,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:16:37,307 INFO L471 AbstractCegarLoop]: Abstraction has 658 states and 1073 transitions. [2024-12-01 13:16:37,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-12-01 13:16:37,307 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 1073 transitions. [2024-12-01 13:16:37,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-12-01 13:16:37,308 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:16:37,309 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:16:37,321 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-12-01 13:16:37,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-12-01 13:16:37,509 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:16:37,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:16:37,510 INFO L85 PathProgramCache]: Analyzing trace with hash -248268668, now seen corresponding path program 1 times [2024-12-01 13:16:37,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:16:37,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849559375] [2024-12-01 13:16:37,510 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:16:37,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:16:37,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:16:37,620 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-01 13:16:37,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:16:37,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849559375] [2024-12-01 13:16:37,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849559375] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 13:16:37,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947401233] [2024-12-01 13:16:37,620 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:16:37,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:16:37,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 13:16:37,622 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 13:16:37,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-12-01 13:16:37,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:16:37,901 INFO L256 TraceCheckSpWp]: Trace formula consists of 1731 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-12-01 13:16:37,906 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 13:16:37,988 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:16:37,988 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 13:16:37,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [947401233] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:16:37,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 13:16:37,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2024-12-01 13:16:37,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985561] [2024-12-01 13:16:37,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:16:37,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-01 13:16:37,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:16:37,989 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-01 13:16:37,989 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-12-01 13:16:37,989 INFO L87 Difference]: Start difference. First operand 658 states and 1073 transitions. Second operand has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-12-01 13:16:38,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:16:38,146 INFO L93 Difference]: Finished difference Result 1246 states and 2039 transitions. [2024-12-01 13:16:38,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-01 13:16:38,147 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 96 [2024-12-01 13:16:38,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:16:38,152 INFO L225 Difference]: With dead ends: 1246 [2024-12-01 13:16:38,152 INFO L226 Difference]: Without dead ends: 680 [2024-12-01 13:16:38,155 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-12-01 13:16:38,156 INFO L435 NwaCegarLoop]: 928 mSDtfsCounter, 113 mSDsluCounter, 5479 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 6407 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 13:16:38,156 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 6407 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 13:16:38,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2024-12-01 13:16:38,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 658. [2024-12-01 13:16:38,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 658 states, 526 states have (on average 1.6577946768060836) internal successors, (872), 549 states have internal predecessors, (872), 102 states have call successors, (102), 28 states have call predecessors, (102), 29 states have return successors, (99), 94 states have call predecessors, (99), 97 states have call successors, (99) [2024-12-01 13:16:38,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 1073 transitions. [2024-12-01 13:16:38,185 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 1073 transitions. Word has length 96 [2024-12-01 13:16:38,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:16:38,186 INFO L471 AbstractCegarLoop]: Abstraction has 658 states and 1073 transitions. [2024-12-01 13:16:38,186 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-12-01 13:16:38,186 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 1073 transitions. [2024-12-01 13:16:38,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-12-01 13:16:38,188 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:16:38,188 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:16:38,201 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-12-01 13:16:38,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-12-01 13:16:38,389 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:16:38,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:16:38,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1881708700, now seen corresponding path program 1 times [2024-12-01 13:16:38,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:16:38,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4452904] [2024-12-01 13:16:38,389 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:16:38,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:16:38,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:16:38,481 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-12-01 13:16:38,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:16:38,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4452904] [2024-12-01 13:16:38,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4452904] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 13:16:38,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447723453] [2024-12-01 13:16:38,482 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:16:38,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:16:38,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 13:16:38,484 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 13:16:38,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-12-01 13:16:38,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:16:38,840 INFO L256 TraceCheckSpWp]: Trace formula consists of 1734 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-01 13:16:38,842 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 13:16:38,875 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:16:38,875 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 13:16:38,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [447723453] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:16:38,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 13:16:38,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-12-01 13:16:38,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782668689] [2024-12-01 13:16:38,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:16:38,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-01 13:16:38,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:16:38,876 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-01 13:16:38,876 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-01 13:16:38,876 INFO L87 Difference]: Start difference. First operand 658 states and 1073 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-12-01 13:16:39,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:16:39,027 INFO L93 Difference]: Finished difference Result 1287 states and 2111 transitions. [2024-12-01 13:16:39,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-01 13:16:39,028 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 96 [2024-12-01 13:16:39,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:16:39,032 INFO L225 Difference]: With dead ends: 1287 [2024-12-01 13:16:39,032 INFO L226 Difference]: Without dead ends: 691 [2024-12-01 13:16:39,035 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-12-01 13:16:39,035 INFO L435 NwaCegarLoop]: 954 mSDtfsCounter, 124 mSDsluCounter, 1776 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 2730 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 13:16:39,036 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 2730 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 13:16:39,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2024-12-01 13:16:39,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 658. [2024-12-01 13:16:39,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 658 states, 526 states have (on average 1.6482889733840305) internal successors, (867), 549 states have internal predecessors, (867), 102 states have call successors, (102), 28 states have call predecessors, (102), 29 states have return successors, (99), 94 states have call predecessors, (99), 97 states have call successors, (99) [2024-12-01 13:16:39,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 1068 transitions. [2024-12-01 13:16:39,063 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 1068 transitions. Word has length 96 [2024-12-01 13:16:39,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:16:39,064 INFO L471 AbstractCegarLoop]: Abstraction has 658 states and 1068 transitions. [2024-12-01 13:16:39,064 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-12-01 13:16:39,064 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 1068 transitions. [2024-12-01 13:16:39,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-12-01 13:16:39,066 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:16:39,066 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:16:39,078 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-12-01 13:16:39,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-12-01 13:16:39,267 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:16:39,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:16:39,267 INFO L85 PathProgramCache]: Analyzing trace with hash -128148795, now seen corresponding path program 1 times [2024-12-01 13:16:39,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:16:39,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502120946] [2024-12-01 13:16:39,267 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:16:39,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:16:39,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:16:39,356 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-01 13:16:39,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:16:39,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502120946] [2024-12-01 13:16:39,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502120946] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 13:16:39,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703223807] [2024-12-01 13:16:39,357 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:16:39,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:16:39,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 13:16:39,359 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 13:16:39,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-12-01 13:16:39,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:16:39,636 INFO L256 TraceCheckSpWp]: Trace formula consists of 1730 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-12-01 13:16:39,639 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 13:16:39,713 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-01 13:16:39,713 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 13:16:39,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1703223807] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:16:39,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 13:16:39,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2024-12-01 13:16:39,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527419054] [2024-12-01 13:16:39,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:16:39,714 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-01 13:16:39,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:16:39,715 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-01 13:16:39,715 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-01 13:16:39,715 INFO L87 Difference]: Start difference. First operand 658 states and 1068 transitions. Second operand has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-12-01 13:16:39,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:16:39,796 INFO L93 Difference]: Finished difference Result 1181 states and 1931 transitions. [2024-12-01 13:16:39,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-01 13:16:39,797 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 96 [2024-12-01 13:16:39,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:16:39,802 INFO L225 Difference]: With dead ends: 1181 [2024-12-01 13:16:39,802 INFO L226 Difference]: Without dead ends: 682 [2024-12-01 13:16:39,804 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-12-01 13:16:39,804 INFO L435 NwaCegarLoop]: 941 mSDtfsCounter, 86 mSDsluCounter, 4626 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 5567 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 13:16:39,804 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 5567 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 13:16:39,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2024-12-01 13:16:39,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 677. [2024-12-01 13:16:39,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 677 states, 542 states have (on average 1.6476014760147601) internal successors, (893), 567 states have internal predecessors, (893), 103 states have call successors, (103), 28 states have call predecessors, (103), 31 states have return successors, (102), 95 states have call predecessors, (102), 98 states have call successors, (102) [2024-12-01 13:16:39,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 1098 transitions. [2024-12-01 13:16:39,829 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 1098 transitions. Word has length 96 [2024-12-01 13:16:39,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:16:39,830 INFO L471 AbstractCegarLoop]: Abstraction has 677 states and 1098 transitions. [2024-12-01 13:16:39,830 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-12-01 13:16:39,830 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 1098 transitions. [2024-12-01 13:16:39,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-12-01 13:16:39,832 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:16:39,832 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:16:39,840 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-12-01 13:16:40,032 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-12-01 13:16:40,032 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:16:40,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:16:40,033 INFO L85 PathProgramCache]: Analyzing trace with hash 674640882, now seen corresponding path program 1 times [2024-12-01 13:16:40,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:16:40,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533695622] [2024-12-01 13:16:40,033 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:16:40,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:16:40,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:16:40,119 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-12-01 13:16:40,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:16:40,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533695622] [2024-12-01 13:16:40,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533695622] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 13:16:40,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [319554124] [2024-12-01 13:16:40,120 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:16:40,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:16:40,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 13:16:40,122 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 13:16:40,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-12-01 13:16:40,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:16:40,401 INFO L256 TraceCheckSpWp]: Trace formula consists of 1731 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-12-01 13:16:40,403 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 13:16:40,453 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-01 13:16:40,454 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 13:16:40,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [319554124] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:16:40,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 13:16:40,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2024-12-01 13:16:40,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384263432] [2024-12-01 13:16:40,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:16:40,454 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-01 13:16:40,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:16:40,455 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-01 13:16:40,455 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-01 13:16:40,455 INFO L87 Difference]: Start difference. First operand 677 states and 1098 transitions. Second operand has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-12-01 13:16:40,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:16:40,532 INFO L93 Difference]: Finished difference Result 1211 states and 1982 transitions. [2024-12-01 13:16:40,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-01 13:16:40,532 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 97 [2024-12-01 13:16:40,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:16:40,536 INFO L225 Difference]: With dead ends: 1211 [2024-12-01 13:16:40,536 INFO L226 Difference]: Without dead ends: 712 [2024-12-01 13:16:40,537 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-12-01 13:16:40,537 INFO L435 NwaCegarLoop]: 941 mSDtfsCounter, 95 mSDsluCounter, 4616 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 5557 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 13:16:40,538 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 5557 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 13:16:40,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2024-12-01 13:16:40,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 677. [2024-12-01 13:16:40,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 677 states, 542 states have (on average 1.6476014760147601) internal successors, (893), 567 states have internal predecessors, (893), 103 states have call successors, (103), 28 states have call predecessors, (103), 31 states have return successors, (102), 95 states have call predecessors, (102), 98 states have call successors, (102) [2024-12-01 13:16:40,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 1098 transitions. [2024-12-01 13:16:40,553 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 1098 transitions. Word has length 97 [2024-12-01 13:16:40,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:16:40,553 INFO L471 AbstractCegarLoop]: Abstraction has 677 states and 1098 transitions. [2024-12-01 13:16:40,553 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-12-01 13:16:40,554 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 1098 transitions. [2024-12-01 13:16:40,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-12-01 13:16:40,555 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:16:40,555 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:16:40,564 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-12-01 13:16:40,755 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-12-01 13:16:40,755 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:16:40,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:16:40,756 INFO L85 PathProgramCache]: Analyzing trace with hash -2102040718, now seen corresponding path program 1 times [2024-12-01 13:16:40,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:16:40,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780664420] [2024-12-01 13:16:40,756 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:16:40,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:16:40,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:16:40,827 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-12-01 13:16:40,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:16:40,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780664420] [2024-12-01 13:16:40,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780664420] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 13:16:40,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893641623] [2024-12-01 13:16:40,827 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:16:40,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:16:40,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 13:16:40,829 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 13:16:40,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-12-01 13:16:41,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:16:41,147 INFO L256 TraceCheckSpWp]: Trace formula consists of 1727 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-12-01 13:16:41,149 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 13:16:41,208 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-01 13:16:41,208 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 13:16:41,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [893641623] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:16:41,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 13:16:41,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2024-12-01 13:16:41,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840516234] [2024-12-01 13:16:41,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:16:41,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-01 13:16:41,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:16:41,209 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-01 13:16:41,209 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-12-01 13:16:41,209 INFO L87 Difference]: Start difference. First operand 677 states and 1098 transitions. Second operand has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-12-01 13:16:41,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:16:41,328 INFO L93 Difference]: Finished difference Result 1196 states and 1956 transitions. [2024-12-01 13:16:41,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-01 13:16:41,329 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 97 [2024-12-01 13:16:41,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:16:41,331 INFO L225 Difference]: With dead ends: 1196 [2024-12-01 13:16:41,332 INFO L226 Difference]: Without dead ends: 697 [2024-12-01 13:16:41,333 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-12-01 13:16:41,334 INFO L435 NwaCegarLoop]: 930 mSDtfsCounter, 113 mSDsluCounter, 5485 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 6415 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 13:16:41,334 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 6415 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 13:16:41,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2024-12-01 13:16:41,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 677. [2024-12-01 13:16:41,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 677 states, 542 states have (on average 1.6476014760147601) internal successors, (893), 567 states have internal predecessors, (893), 103 states have call successors, (103), 28 states have call predecessors, (103), 31 states have return successors, (102), 95 states have call predecessors, (102), 98 states have call successors, (102) [2024-12-01 13:16:41,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 1098 transitions. [2024-12-01 13:16:41,359 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 1098 transitions. Word has length 97 [2024-12-01 13:16:41,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:16:41,359 INFO L471 AbstractCegarLoop]: Abstraction has 677 states and 1098 transitions. [2024-12-01 13:16:41,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-12-01 13:16:41,360 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 1098 transitions. [2024-12-01 13:16:41,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-12-01 13:16:41,362 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:16:41,362 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:16:41,374 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-12-01 13:16:41,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-12-01 13:16:41,563 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:16:41,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:16:41,563 INFO L85 PathProgramCache]: Analyzing trace with hash 460665337, now seen corresponding path program 1 times [2024-12-01 13:16:41,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:16:41,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118049756] [2024-12-01 13:16:41,563 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:16:41,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:16:41,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:16:41,661 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-01 13:16:41,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:16:41,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118049756] [2024-12-01 13:16:41,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118049756] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 13:16:41,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935514138] [2024-12-01 13:16:41,662 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:16:41,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:16:41,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 13:16:41,664 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 13:16:41,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-12-01 13:16:41,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:16:41,978 INFO L256 TraceCheckSpWp]: Trace formula consists of 1731 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-01 13:16:41,990 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 13:16:42,013 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-01 13:16:42,013 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 13:16:42,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [935514138] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:16:42,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 13:16:42,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-12-01 13:16:42,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631179986] [2024-12-01 13:16:42,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:16:42,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-01 13:16:42,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:16:42,015 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-01 13:16:42,015 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-01 13:16:42,015 INFO L87 Difference]: Start difference. First operand 677 states and 1098 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-12-01 13:16:42,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:16:42,067 INFO L93 Difference]: Finished difference Result 1248 states and 2041 transitions. [2024-12-01 13:16:42,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-01 13:16:42,068 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 97 [2024-12-01 13:16:42,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:16:42,073 INFO L225 Difference]: With dead ends: 1248 [2024-12-01 13:16:42,073 INFO L226 Difference]: Without dead ends: 677 [2024-12-01 13:16:42,076 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-12-01 13:16:42,076 INFO L435 NwaCegarLoop]: 936 mSDtfsCounter, 13 mSDsluCounter, 1868 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2804 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 13:16:42,076 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2804 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 13:16:42,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2024-12-01 13:16:42,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 677. [2024-12-01 13:16:42,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 677 states, 542 states have (on average 1.6402214022140222) internal successors, (889), 567 states have internal predecessors, (889), 103 states have call successors, (103), 28 states have call predecessors, (103), 31 states have return successors, (102), 95 states have call predecessors, (102), 98 states have call successors, (102) [2024-12-01 13:16:42,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 1094 transitions. [2024-12-01 13:16:42,102 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 1094 transitions. Word has length 97 [2024-12-01 13:16:42,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:16:42,102 INFO L471 AbstractCegarLoop]: Abstraction has 677 states and 1094 transitions. [2024-12-01 13:16:42,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-12-01 13:16:42,102 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 1094 transitions. [2024-12-01 13:16:42,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-12-01 13:16:42,105 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:16:42,105 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:16:42,117 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-12-01 13:16:42,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-12-01 13:16:42,305 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:16:42,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:16:42,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1354445235, now seen corresponding path program 1 times [2024-12-01 13:16:42,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:16:42,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394480210] [2024-12-01 13:16:42,306 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:16:42,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:16:42,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:16:42,399 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-12-01 13:16:42,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:16:42,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394480210] [2024-12-01 13:16:42,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394480210] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 13:16:42,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [445796306] [2024-12-01 13:16:42,399 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:16:42,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:16:42,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 13:16:42,402 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 13:16:42,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-12-01 13:16:42,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:16:42,701 INFO L256 TraceCheckSpWp]: Trace formula consists of 1728 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-01 13:16:42,704 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 13:16:42,725 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-12-01 13:16:42,725 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 13:16:42,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [445796306] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:16:42,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 13:16:42,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-12-01 13:16:42,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752984491] [2024-12-01 13:16:42,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:16:42,725 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-01 13:16:42,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:16:42,726 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-01 13:16:42,726 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-01 13:16:42,726 INFO L87 Difference]: Start difference. First operand 677 states and 1094 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-12-01 13:16:42,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:16:42,781 INFO L93 Difference]: Finished difference Result 1292 states and 2109 transitions. [2024-12-01 13:16:42,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-01 13:16:42,782 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 98 [2024-12-01 13:16:42,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:16:42,786 INFO L225 Difference]: With dead ends: 1292 [2024-12-01 13:16:42,786 INFO L226 Difference]: Without dead ends: 701 [2024-12-01 13:16:42,788 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-01 13:16:42,788 INFO L435 NwaCegarLoop]: 930 mSDtfsCounter, 7 mSDsluCounter, 1847 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2777 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 13:16:42,788 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2777 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 13:16:42,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 701 states. [2024-12-01 13:16:42,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 701 to 701. [2024-12-01 13:16:42,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 701 states, 566 states have (on average 1.6201413427561837) internal successors, (917), 591 states have internal predecessors, (917), 103 states have call successors, (103), 28 states have call predecessors, (103), 31 states have return successors, (102), 95 states have call predecessors, (102), 98 states have call successors, (102) [2024-12-01 13:16:42,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 1122 transitions. [2024-12-01 13:16:42,806 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 1122 transitions. Word has length 98 [2024-12-01 13:16:42,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:16:42,806 INFO L471 AbstractCegarLoop]: Abstraction has 701 states and 1122 transitions. [2024-12-01 13:16:42,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-12-01 13:16:42,807 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 1122 transitions. [2024-12-01 13:16:42,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-12-01 13:16:42,808 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:16:42,808 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:16:42,817 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-12-01 13:16:43,008 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-12-01 13:16:43,009 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:16:43,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:16:43,009 INFO L85 PathProgramCache]: Analyzing trace with hash -851210788, now seen corresponding path program 1 times [2024-12-01 13:16:43,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:16:43,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75015748] [2024-12-01 13:16:43,009 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:16:43,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:16:43,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:16:43,096 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-12-01 13:16:43,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:16:43,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75015748] [2024-12-01 13:16:43,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75015748] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 13:16:43,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271392724] [2024-12-01 13:16:43,096 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:16:43,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:16:43,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 13:16:43,098 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 13:16:43,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-12-01 13:16:43,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:16:43,397 INFO L256 TraceCheckSpWp]: Trace formula consists of 1729 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-12-01 13:16:43,399 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 13:16:43,459 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-01 13:16:43,459 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 13:16:43,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [271392724] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:16:43,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 13:16:43,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2024-12-01 13:16:43,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235161256] [2024-12-01 13:16:43,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:16:43,460 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-01 13:16:43,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:16:43,460 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-01 13:16:43,460 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-12-01 13:16:43,461 INFO L87 Difference]: Start difference. First operand 701 states and 1122 transitions. Second operand has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-12-01 13:16:43,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:16:43,579 INFO L93 Difference]: Finished difference Result 1226 states and 1988 transitions. [2024-12-01 13:16:43,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-01 13:16:43,580 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 99 [2024-12-01 13:16:43,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:16:43,585 INFO L225 Difference]: With dead ends: 1226 [2024-12-01 13:16:43,585 INFO L226 Difference]: Without dead ends: 727 [2024-12-01 13:16:43,587 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 95 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 13:16:43,588 INFO L435 NwaCegarLoop]: 924 mSDtfsCounter, 119 mSDsluCounter, 5447 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 6371 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 13:16:43,588 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 6371 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 13:16:43,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2024-12-01 13:16:43,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 701. [2024-12-01 13:16:43,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 701 states, 566 states have (on average 1.6201413427561837) internal successors, (917), 591 states have internal predecessors, (917), 103 states have call successors, (103), 28 states have call predecessors, (103), 31 states have return successors, (102), 95 states have call predecessors, (102), 98 states have call successors, (102) [2024-12-01 13:16:43,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 1122 transitions. [2024-12-01 13:16:43,612 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 1122 transitions. Word has length 99 [2024-12-01 13:16:43,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:16:43,612 INFO L471 AbstractCegarLoop]: Abstraction has 701 states and 1122 transitions. [2024-12-01 13:16:43,612 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-12-01 13:16:43,612 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 1122 transitions. [2024-12-01 13:16:43,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-12-01 13:16:43,614 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:16:43,614 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:16:43,627 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-12-01 13:16:43,815 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-12-01 13:16:43,815 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:16:43,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:16:43,815 INFO L85 PathProgramCache]: Analyzing trace with hash 2050839422, now seen corresponding path program 1 times [2024-12-01 13:16:43,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:16:43,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537673679] [2024-12-01 13:16:43,815 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:16:43,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:16:43,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:16:43,904 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-01 13:16:43,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:16:43,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537673679] [2024-12-01 13:16:43,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537673679] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 13:16:43,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [362351449] [2024-12-01 13:16:43,904 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:16:43,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:16:43,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 13:16:43,906 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 13:16:43,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-12-01 13:16:44,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:16:44,171 INFO L256 TraceCheckSpWp]: Trace formula consists of 1732 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-12-01 13:16:44,174 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 13:16:44,482 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-12-01 13:16:44,482 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 13:16:44,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [362351449] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:16:44,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 13:16:44,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4] total 9 [2024-12-01 13:16:44,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837274792] [2024-12-01 13:16:44,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:16:44,482 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-01 13:16:44,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:16:44,483 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-01 13:16:44,483 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-12-01 13:16:44,483 INFO L87 Difference]: Start difference. First operand 701 states and 1122 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 6 states have internal predecessors, (63), 4 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2024-12-01 13:16:47,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:16:47,511 INFO L93 Difference]: Finished difference Result 2270 states and 3755 transitions. [2024-12-01 13:16:47,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-01 13:16:47,511 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 6 states have internal predecessors, (63), 4 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 99 [2024-12-01 13:16:47,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:16:47,518 INFO L225 Difference]: With dead ends: 2270 [2024-12-01 13:16:47,518 INFO L226 Difference]: Without dead ends: 1776 [2024-12-01 13:16:47,519 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-12-01 13:16:47,520 INFO L435 NwaCegarLoop]: 620 mSDtfsCounter, 2820 mSDsluCounter, 1217 mSDsCounter, 0 mSdLazyCounter, 3921 mSolverCounterSat, 504 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3002 SdHoareTripleChecker+Valid, 1837 SdHoareTripleChecker+Invalid, 4425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 504 IncrementalHoareTripleChecker+Valid, 3921 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-12-01 13:16:47,520 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3002 Valid, 1837 Invalid, 4425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [504 Valid, 3921 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-12-01 13:16:47,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1776 states. [2024-12-01 13:16:47,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1776 to 1589. [2024-12-01 13:16:47,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1589 states, 1267 states have (on average 1.6606156274664563) internal successors, (2104), 1310 states have internal predecessors, (2104), 256 states have call successors, (256), 60 states have call predecessors, (256), 65 states have return successors, (265), 233 states have call predecessors, (265), 251 states have call successors, (265) [2024-12-01 13:16:47,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1589 states to 1589 states and 2625 transitions. [2024-12-01 13:16:47,587 INFO L78 Accepts]: Start accepts. Automaton has 1589 states and 2625 transitions. Word has length 99 [2024-12-01 13:16:47,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:16:47,588 INFO L471 AbstractCegarLoop]: Abstraction has 1589 states and 2625 transitions. [2024-12-01 13:16:47,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 6 states have internal predecessors, (63), 4 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2024-12-01 13:16:47,588 INFO L276 IsEmpty]: Start isEmpty. Operand 1589 states and 2625 transitions. [2024-12-01 13:16:47,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-12-01 13:16:47,593 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:16:47,593 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:16:47,605 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-12-01 13:16:47,793 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:16:47,793 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:16:47,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:16:47,794 INFO L85 PathProgramCache]: Analyzing trace with hash 165512894, now seen corresponding path program 1 times [2024-12-01 13:16:47,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:16:47,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517307881] [2024-12-01 13:16:47,794 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:16:47,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:16:47,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:16:47,948 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-01 13:16:47,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:16:47,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517307881] [2024-12-01 13:16:47,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517307881] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 13:16:47,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546537242] [2024-12-01 13:16:47,949 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:16:47,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:16:47,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 13:16:47,951 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 13:16:47,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-12-01 13:16:48,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:16:48,384 INFO L256 TraceCheckSpWp]: Trace formula consists of 2076 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-01 13:16:48,389 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 13:16:48,417 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-12-01 13:16:48,417 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 13:16:48,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [546537242] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:16:48,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 13:16:48,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2024-12-01 13:16:48,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835628125] [2024-12-01 13:16:48,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:16:48,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-01 13:16:48,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:16:48,419 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-01 13:16:48,419 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-01 13:16:48,419 INFO L87 Difference]: Start difference. First operand 1589 states and 2625 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-01 13:16:48,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:16:48,515 INFO L93 Difference]: Finished difference Result 2979 states and 4968 transitions. [2024-12-01 13:16:48,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-01 13:16:48,516 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 138 [2024-12-01 13:16:48,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:16:48,527 INFO L225 Difference]: With dead ends: 2979 [2024-12-01 13:16:48,527 INFO L226 Difference]: Without dead ends: 1598 [2024-12-01 13:16:48,533 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-01 13:16:48,534 INFO L435 NwaCegarLoop]: 943 mSDtfsCounter, 0 mSDsluCounter, 2821 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3764 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 13:16:48,534 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3764 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 13:16:48,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1598 states. [2024-12-01 13:16:48,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1598 to 1598. [2024-12-01 13:16:48,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1598 states, 1276 states have (on average 1.6559561128526645) internal successors, (2113), 1319 states have internal predecessors, (2113), 256 states have call successors, (256), 60 states have call predecessors, (256), 65 states have return successors, (265), 233 states have call predecessors, (265), 251 states have call successors, (265) [2024-12-01 13:16:48,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1598 states to 1598 states and 2634 transitions. [2024-12-01 13:16:48,606 INFO L78 Accepts]: Start accepts. Automaton has 1598 states and 2634 transitions. Word has length 138 [2024-12-01 13:16:48,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:16:48,606 INFO L471 AbstractCegarLoop]: Abstraction has 1598 states and 2634 transitions. [2024-12-01 13:16:48,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-01 13:16:48,606 INFO L276 IsEmpty]: Start isEmpty. Operand 1598 states and 2634 transitions. [2024-12-01 13:16:48,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-12-01 13:16:48,611 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:16:48,611 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:16:48,624 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-12-01 13:16:48,811 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:16:48,811 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:16:48,812 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:16:48,812 INFO L85 PathProgramCache]: Analyzing trace with hash 685182054, now seen corresponding path program 1 times [2024-12-01 13:16:48,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:16:48,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464613193] [2024-12-01 13:16:48,812 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:16:48,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:16:48,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:16:48,928 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 13:16:48,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:16:48,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464613193] [2024-12-01 13:16:48,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464613193] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 13:16:48,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681537420] [2024-12-01 13:16:48,928 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:16:48,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:16:48,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 13:16:48,930 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 13:16:48,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-12-01 13:16:49,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:16:49,351 INFO L256 TraceCheckSpWp]: Trace formula consists of 2083 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-12-01 13:16:49,357 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 13:16:49,519 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-12-01 13:16:49,519 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 13:16:49,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681537420] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:16:49,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 13:16:49,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2024-12-01 13:16:49,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513950324] [2024-12-01 13:16:49,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:16:49,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-01 13:16:49,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:16:49,520 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-01 13:16:49,521 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-12-01 13:16:49,521 INFO L87 Difference]: Start difference. First operand 1598 states and 2634 transitions. Second operand has 8 states, 8 states have (on average 11.25) internal successors, (90), 7 states have internal predecessors, (90), 5 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) [2024-12-01 13:16:52,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:16:52,208 INFO L93 Difference]: Finished difference Result 4270 states and 7091 transitions. [2024-12-01 13:16:52,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-01 13:16:52,208 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.25) internal successors, (90), 7 states have internal predecessors, (90), 5 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) Word has length 140 [2024-12-01 13:16:52,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:16:52,223 INFO L225 Difference]: With dead ends: 4270 [2024-12-01 13:16:52,223 INFO L226 Difference]: Without dead ends: 2713 [2024-12-01 13:16:52,229 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2024-12-01 13:16:52,229 INFO L435 NwaCegarLoop]: 467 mSDtfsCounter, 1702 mSDsluCounter, 1831 mSDsCounter, 0 mSdLazyCounter, 5189 mSolverCounterSat, 249 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1795 SdHoareTripleChecker+Valid, 2298 SdHoareTripleChecker+Invalid, 5438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 249 IncrementalHoareTripleChecker+Valid, 5189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-12-01 13:16:52,230 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1795 Valid, 2298 Invalid, 5438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [249 Valid, 5189 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-12-01 13:16:52,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2713 states. [2024-12-01 13:16:52,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2713 to 2488. [2024-12-01 13:16:52,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2488 states, 1959 states have (on average 1.638080653394589) internal successors, (3209), 2011 states have internal predecessors, (3209), 420 states have call successors, (420), 89 states have call predecessors, (420), 108 states have return successors, (463), 398 states have call predecessors, (463), 415 states have call successors, (463) [2024-12-01 13:16:52,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2488 states to 2488 states and 4092 transitions. [2024-12-01 13:16:52,367 INFO L78 Accepts]: Start accepts. Automaton has 2488 states and 4092 transitions. Word has length 140 [2024-12-01 13:16:52,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:16:52,367 INFO L471 AbstractCegarLoop]: Abstraction has 2488 states and 4092 transitions. [2024-12-01 13:16:52,368 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.25) internal successors, (90), 7 states have internal predecessors, (90), 5 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) [2024-12-01 13:16:52,368 INFO L276 IsEmpty]: Start isEmpty. Operand 2488 states and 4092 transitions. [2024-12-01 13:16:52,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-12-01 13:16:52,372 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:16:52,373 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:16:52,386 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-12-01 13:16:52,573 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-12-01 13:16:52,573 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:16:52,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:16:52,574 INFO L85 PathProgramCache]: Analyzing trace with hash -2080976094, now seen corresponding path program 1 times [2024-12-01 13:16:52,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:16:52,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833950717] [2024-12-01 13:16:52,574 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:16:52,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:16:52,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:16:52,678 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 13:16:52,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:16:52,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833950717] [2024-12-01 13:16:52,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833950717] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 13:16:52,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564125455] [2024-12-01 13:16:52,678 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:16:52,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:16:52,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 13:16:52,680 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 13:16:52,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-12-01 13:16:53,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:16:53,021 INFO L256 TraceCheckSpWp]: Trace formula consists of 2083 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-01 13:16:53,024 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 13:16:53,154 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-12-01 13:16:53,154 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 13:16:53,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [564125455] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:16:53,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 13:16:53,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-12-01 13:16:53,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235041742] [2024-12-01 13:16:53,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:16:53,155 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-01 13:16:53,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:16:53,155 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-01 13:16:53,155 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-12-01 13:16:53,155 INFO L87 Difference]: Start difference. First operand 2488 states and 4092 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2024-12-01 13:16:53,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:16:53,548 INFO L93 Difference]: Finished difference Result 2600 states and 4279 transitions. [2024-12-01 13:16:53,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-01 13:16:53,549 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) Word has length 141 [2024-12-01 13:16:53,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:16:53,568 INFO L225 Difference]: With dead ends: 2600 [2024-12-01 13:16:53,568 INFO L226 Difference]: Without dead ends: 2585 [2024-12-01 13:16:53,570 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-12-01 13:16:53,572 INFO L435 NwaCegarLoop]: 936 mSDtfsCounter, 866 mSDsluCounter, 776 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 874 SdHoareTripleChecker+Valid, 1712 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-01 13:16:53,572 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [874 Valid, 1712 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-01 13:16:53,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2585 states. [2024-12-01 13:16:53,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2585 to 2494. [2024-12-01 13:16:53,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2494 states, 1965 states have (on average 1.6361323155216285) internal successors, (3215), 2017 states have internal predecessors, (3215), 420 states have call successors, (420), 89 states have call predecessors, (420), 108 states have return successors, (463), 398 states have call predecessors, (463), 415 states have call successors, (463) [2024-12-01 13:16:53,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2494 states to 2494 states and 4098 transitions. [2024-12-01 13:16:53,700 INFO L78 Accepts]: Start accepts. Automaton has 2494 states and 4098 transitions. Word has length 141 [2024-12-01 13:16:53,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:16:53,701 INFO L471 AbstractCegarLoop]: Abstraction has 2494 states and 4098 transitions. [2024-12-01 13:16:53,701 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2024-12-01 13:16:53,702 INFO L276 IsEmpty]: Start isEmpty. Operand 2494 states and 4098 transitions. [2024-12-01 13:16:53,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-12-01 13:16:53,704 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:16:53,704 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:16:53,715 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-12-01 13:16:53,905 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:16:53,905 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:16:53,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:16:53,905 INFO L85 PathProgramCache]: Analyzing trace with hash -225605955, now seen corresponding path program 1 times [2024-12-01 13:16:53,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:16:53,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122976614] [2024-12-01 13:16:53,905 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:16:53,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:16:53,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:16:53,993 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 13:16:53,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:16:53,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122976614] [2024-12-01 13:16:53,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122976614] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 13:16:53,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140334905] [2024-12-01 13:16:53,993 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:16:53,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:16:53,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 13:16:53,995 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 13:16:53,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-12-01 13:16:54,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:16:54,327 INFO L256 TraceCheckSpWp]: Trace formula consists of 2099 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-01 13:16:54,330 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 13:16:54,407 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-12-01 13:16:54,407 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 13:16:54,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140334905] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:16:54,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 13:16:54,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4] total 8 [2024-12-01 13:16:54,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941622454] [2024-12-01 13:16:54,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:16:54,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-01 13:16:54,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:16:54,408 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-01 13:16:54,409 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-12-01 13:16:54,409 INFO L87 Difference]: Start difference. First operand 2494 states and 4098 transitions. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 5 states have internal predecessors, (95), 3 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) [2024-12-01 13:16:54,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:16:54,809 INFO L93 Difference]: Finished difference Result 2630 states and 4288 transitions. [2024-12-01 13:16:54,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-01 13:16:54,809 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 5 states have internal predecessors, (95), 3 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) Word has length 147 [2024-12-01 13:16:54,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:16:54,820 INFO L225 Difference]: With dead ends: 2630 [2024-12-01 13:16:54,820 INFO L226 Difference]: Without dead ends: 2615 [2024-12-01 13:16:54,822 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-12-01 13:16:54,822 INFO L435 NwaCegarLoop]: 943 mSDtfsCounter, 881 mSDsluCounter, 2766 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 882 SdHoareTripleChecker+Valid, 3709 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-01 13:16:54,823 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [882 Valid, 3709 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-01 13:16:54,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2615 states. [2024-12-01 13:16:54,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2615 to 2594. [2024-12-01 13:16:54,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2594 states, 2041 states have (on average 1.627143557079863) internal successors, (3321), 2093 states have internal predecessors, (3321), 436 states have call successors, (436), 99 states have call predecessors, (436), 116 states have return successors, (482), 412 states have call predecessors, (482), 431 states have call successors, (482) [2024-12-01 13:16:54,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2594 states to 2594 states and 4239 transitions. [2024-12-01 13:16:54,919 INFO L78 Accepts]: Start accepts. Automaton has 2594 states and 4239 transitions. Word has length 147 [2024-12-01 13:16:54,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:16:54,920 INFO L471 AbstractCegarLoop]: Abstraction has 2594 states and 4239 transitions. [2024-12-01 13:16:54,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 5 states have internal predecessors, (95), 3 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) [2024-12-01 13:16:54,920 INFO L276 IsEmpty]: Start isEmpty. Operand 2594 states and 4239 transitions. [2024-12-01 13:16:54,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-12-01 13:16:54,923 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:16:54,923 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:16:54,933 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-12-01 13:16:55,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:16:55,124 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:16:55,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:16:55,124 INFO L85 PathProgramCache]: Analyzing trace with hash -2117641170, now seen corresponding path program 1 times [2024-12-01 13:16:55,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:16:55,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73406120] [2024-12-01 13:16:55,124 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:16:55,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:16:55,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:16:55,278 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 13:16:55,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:16:55,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73406120] [2024-12-01 13:16:55,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73406120] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 13:16:55,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868029692] [2024-12-01 13:16:55,278 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:16:55,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:16:55,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 13:16:55,281 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 13:16:55,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-12-01 13:16:55,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:16:55,601 INFO L256 TraceCheckSpWp]: Trace formula consists of 2136 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-01 13:16:55,604 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 13:16:55,619 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-01 13:16:55,620 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 13:16:55,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [868029692] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:16:55,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 13:16:55,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-12-01 13:16:55,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233102747] [2024-12-01 13:16:55,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:16:55,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-01 13:16:55,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:16:55,621 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-01 13:16:55,621 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-01 13:16:55,621 INFO L87 Difference]: Start difference. First operand 2594 states and 4239 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-01 13:16:55,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:16:55,720 INFO L93 Difference]: Finished difference Result 5162 states and 8448 transitions. [2024-12-01 13:16:55,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-01 13:16:55,721 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) Word has length 158 [2024-12-01 13:16:55,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:16:55,732 INFO L225 Difference]: With dead ends: 5162 [2024-12-01 13:16:55,732 INFO L226 Difference]: Without dead ends: 2563 [2024-12-01 13:16:55,743 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-01 13:16:55,744 INFO L435 NwaCegarLoop]: 938 mSDtfsCounter, 7 mSDsluCounter, 1869 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2807 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 13:16:55,744 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2807 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 13:16:55,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2563 states. [2024-12-01 13:16:55,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2563 to 2563. [2024-12-01 13:16:55,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2563 states, 2013 states have (on average 1.6269249875807252) internal successors, (3275), 2063 states have internal predecessors, (3275), 435 states have call successors, (435), 99 states have call predecessors, (435), 114 states have return successors, (479), 411 states have call predecessors, (479), 430 states have call successors, (479) [2024-12-01 13:16:55,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2563 states to 2563 states and 4189 transitions. [2024-12-01 13:16:55,910 INFO L78 Accepts]: Start accepts. Automaton has 2563 states and 4189 transitions. Word has length 158 [2024-12-01 13:16:55,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:16:55,911 INFO L471 AbstractCegarLoop]: Abstraction has 2563 states and 4189 transitions. [2024-12-01 13:16:55,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-01 13:16:55,911 INFO L276 IsEmpty]: Start isEmpty. Operand 2563 states and 4189 transitions. [2024-12-01 13:16:55,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-12-01 13:16:55,915 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:16:55,915 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:16:55,929 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-12-01 13:16:56,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:16:56,116 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:16:56,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:16:56,116 INFO L85 PathProgramCache]: Analyzing trace with hash 516542595, now seen corresponding path program 1 times [2024-12-01 13:16:56,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:16:56,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039519833] [2024-12-01 13:16:56,116 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:16:56,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:16:56,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:16:56,310 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-12-01 13:16:56,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:16:56,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039519833] [2024-12-01 13:16:56,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039519833] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 13:16:56,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [719660343] [2024-12-01 13:16:56,310 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:16:56,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:16:56,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 13:16:56,312 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 13:16:56,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-12-01 13:16:56,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:16:56,681 INFO L256 TraceCheckSpWp]: Trace formula consists of 2139 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-12-01 13:16:56,684 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 13:16:56,711 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-01 13:16:56,712 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 13:16:56,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [719660343] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:16:56,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 13:16:56,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 7 [2024-12-01 13:16:56,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799474239] [2024-12-01 13:16:56,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:16:56,712 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-01 13:16:56,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:16:56,713 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-01 13:16:56,713 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-01 13:16:56,713 INFO L87 Difference]: Start difference. First operand 2563 states and 4189 transitions. Second operand has 7 states, 6 states have (on average 20.166666666666668) internal successors, (121), 6 states have internal predecessors, (121), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2024-12-01 13:16:56,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:16:56,831 INFO L93 Difference]: Finished difference Result 5095 states and 8342 transitions. [2024-12-01 13:16:56,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-01 13:16:56,831 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 20.166666666666668) internal successors, (121), 6 states have internal predecessors, (121), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) Word has length 160 [2024-12-01 13:16:56,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:16:56,848 INFO L225 Difference]: With dead ends: 5095 [2024-12-01 13:16:56,848 INFO L226 Difference]: Without dead ends: 2563 [2024-12-01 13:16:56,859 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-01 13:16:56,860 INFO L435 NwaCegarLoop]: 956 mSDtfsCounter, 119 mSDsluCounter, 4654 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 5610 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 13:16:56,860 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 5610 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 13:16:56,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2563 states. [2024-12-01 13:16:56,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2563 to 2542. [2024-12-01 13:16:56,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2542 states, 1992 states have (on average 1.627008032128514) internal successors, (3241), 2042 states have internal predecessors, (3241), 435 states have call successors, (435), 99 states have call predecessors, (435), 114 states have return successors, (479), 411 states have call predecessors, (479), 430 states have call successors, (479) [2024-12-01 13:16:56,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2542 states to 2542 states and 4155 transitions. [2024-12-01 13:16:56,958 INFO L78 Accepts]: Start accepts. Automaton has 2542 states and 4155 transitions. Word has length 160 [2024-12-01 13:16:56,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:16:56,958 INFO L471 AbstractCegarLoop]: Abstraction has 2542 states and 4155 transitions. [2024-12-01 13:16:56,958 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 20.166666666666668) internal successors, (121), 6 states have internal predecessors, (121), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2024-12-01 13:16:56,958 INFO L276 IsEmpty]: Start isEmpty. Operand 2542 states and 4155 transitions. [2024-12-01 13:16:56,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-12-01 13:16:56,961 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:16:56,961 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:16:56,971 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-12-01 13:16:57,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:16:57,162 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:16:57,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:16:57,162 INFO L85 PathProgramCache]: Analyzing trace with hash -169396216, now seen corresponding path program 1 times [2024-12-01 13:16:57,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:16:57,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308005005] [2024-12-01 13:16:57,162 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:16:57,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:16:57,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:16:57,295 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-01 13:16:57,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:16:57,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308005005] [2024-12-01 13:16:57,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308005005] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 13:16:57,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1954251932] [2024-12-01 13:16:57,296 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:16:57,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:16:57,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 13:16:57,298 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 13:16:57,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-12-01 13:16:57,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:16:57,686 INFO L256 TraceCheckSpWp]: Trace formula consists of 2145 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-01 13:16:57,689 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 13:16:57,730 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-01 13:16:57,730 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 13:16:57,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1954251932] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:16:57,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 13:16:57,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-12-01 13:16:57,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148144474] [2024-12-01 13:16:57,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:16:57,730 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-01 13:16:57,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:16:57,731 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-01 13:16:57,731 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-01 13:16:57,731 INFO L87 Difference]: Start difference. First operand 2542 states and 4155 transitions. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-01 13:16:57,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:16:57,888 INFO L93 Difference]: Finished difference Result 5077 states and 8312 transitions. [2024-12-01 13:16:57,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-01 13:16:57,889 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 162 [2024-12-01 13:16:57,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:16:57,899 INFO L225 Difference]: With dead ends: 5077 [2024-12-01 13:16:57,899 INFO L226 Difference]: Without dead ends: 2566 [2024-12-01 13:16:57,904 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-12-01 13:16:57,904 INFO L435 NwaCegarLoop]: 921 mSDtfsCounter, 128 mSDsluCounter, 1765 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 2686 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 13:16:57,904 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 2686 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 13:16:57,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2566 states. [2024-12-01 13:16:57,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2566 to 2542. [2024-12-01 13:16:57,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2542 states, 1992 states have (on average 1.6265060240963856) internal successors, (3240), 2042 states have internal predecessors, (3240), 435 states have call successors, (435), 99 states have call predecessors, (435), 114 states have return successors, (479), 411 states have call predecessors, (479), 430 states have call successors, (479) [2024-12-01 13:16:57,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2542 states to 2542 states and 4154 transitions. [2024-12-01 13:16:57,985 INFO L78 Accepts]: Start accepts. Automaton has 2542 states and 4154 transitions. Word has length 162 [2024-12-01 13:16:57,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:16:57,986 INFO L471 AbstractCegarLoop]: Abstraction has 2542 states and 4154 transitions. [2024-12-01 13:16:57,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-01 13:16:57,986 INFO L276 IsEmpty]: Start isEmpty. Operand 2542 states and 4154 transitions. [2024-12-01 13:16:57,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-12-01 13:16:57,988 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:16:57,989 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:16:57,998 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-12-01 13:16:58,189 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e9d523-d809-4cac-910e-a6380f24ee9e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:16:58,189 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:16:58,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:16:58,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1292694628, now seen corresponding path program 1 times [2024-12-01 13:16:58,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:16:58,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10862899] [2024-12-01 13:16:58,190 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:16:58,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:16:58,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:16:58,300 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-12-01 13:16:58,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:16:58,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10862899] [2024-12-01 13:16:58,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10862899] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:16:58,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:16:58,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-01 13:16:58,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113411374] [2024-12-01 13:16:58,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:16:58,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-01 13:16:58,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:16:58,302 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-01 13:16:58,302 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-01 13:16:58,302 INFO L87 Difference]: Start difference. First operand 2542 states and 4154 transitions. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-01 13:16:58,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:16:58,396 INFO L93 Difference]: Finished difference Result 5012 states and 8221 transitions. [2024-12-01 13:16:58,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-01 13:16:58,397 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 163 [2024-12-01 13:16:58,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:16:58,432 INFO L225 Difference]: With dead ends: 5012 [2024-12-01 13:16:58,432 INFO L226 Difference]: Without dead ends: 2502 [2024-12-01 13:16:58,436 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-01 13:16:58,437 INFO L435 NwaCegarLoop]: 936 mSDtfsCounter, 8 mSDsluCounter, 1868 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2804 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 13:16:58,437 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 2804 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 13:16:58,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2502 states. [2024-12-01 13:16:58,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2502 to 2502. [2024-12-01 13:16:58,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2502 states, 1955 states have (on average 1.6250639386189258) internal successors, (3177), 2003 states have internal predecessors, (3177), 434 states have call successors, (434), 99 states have call predecessors, (434), 112 states have return successors, (476), 410 states have call predecessors, (476), 429 states have call successors, (476) [2024-12-01 13:16:58,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2502 states to 2502 states and 4087 transitions. [2024-12-01 13:16:58,549 INFO L78 Accepts]: Start accepts. Automaton has 2502 states and 4087 transitions. Word has length 163 [2024-12-01 13:16:58,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:16:58,550 INFO L471 AbstractCegarLoop]: Abstraction has 2502 states and 4087 transitions. [2024-12-01 13:16:58,550 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-01 13:16:58,550 INFO L276 IsEmpty]: Start isEmpty. Operand 2502 states and 4087 transitions. [2024-12-01 13:16:58,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-12-01 13:16:58,555 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:16:58,555 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:16:58,555 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-12-01 13:16:58,555 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:16:58,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:16:58,556 INFO L85 PathProgramCache]: Analyzing trace with hash -228588416, now seen corresponding path program 1 times [2024-12-01 13:16:58,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:16:58,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136216128] [2024-12-01 13:16:58,556 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:16:58,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:16:58,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:16:58,735 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-01 13:16:58,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:16:58,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136216128] [2024-12-01 13:16:58,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136216128] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:16:58,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:16:58,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-01 13:16:58,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618435354] [2024-12-01 13:16:58,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:16:58,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-01 13:16:58,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:16:58,737 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-01 13:16:58,737 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-01 13:16:58,737 INFO L87 Difference]: Start difference. First operand 2502 states and 4087 transitions. Second operand has 7 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-12-01 13:16:58,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:16:58,856 INFO L93 Difference]: Finished difference Result 4915 states and 8060 transitions. [2024-12-01 13:16:58,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-01 13:16:58,857 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 164 [2024-12-01 13:16:58,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:16:58,870 INFO L225 Difference]: With dead ends: 4915 [2024-12-01 13:16:58,870 INFO L226 Difference]: Without dead ends: 2488 [2024-12-01 13:16:58,876 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 13:16:58,876 INFO L435 NwaCegarLoop]: 919 mSDtfsCounter, 88 mSDsluCounter, 4517 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 5436 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 13:16:58,877 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 5436 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 13:16:58,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2488 states. [2024-12-01 13:16:58,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2488 to 2488. [2024-12-01 13:16:58,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2488 states, 1941 states have (on average 1.6239052035033488) internal successors, (3152), 1989 states have internal predecessors, (3152), 434 states have call successors, (434), 99 states have call predecessors, (434), 112 states have return successors, (476), 410 states have call predecessors, (476), 429 states have call successors, (476) [2024-12-01 13:16:58,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2488 states to 2488 states and 4062 transitions. [2024-12-01 13:16:58,973 INFO L78 Accepts]: Start accepts. Automaton has 2488 states and 4062 transitions. Word has length 164 [2024-12-01 13:16:58,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:16:58,973 INFO L471 AbstractCegarLoop]: Abstraction has 2488 states and 4062 transitions. [2024-12-01 13:16:58,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-12-01 13:16:58,974 INFO L276 IsEmpty]: Start isEmpty. Operand 2488 states and 4062 transitions. [2024-12-01 13:16:58,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-12-01 13:16:58,976 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:16:58,976 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:16:58,976 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-12-01 13:16:58,976 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:16:58,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:16:58,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1939289045, now seen corresponding path program 1 times [2024-12-01 13:16:58,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:16:58,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735548103] [2024-12-01 13:16:58,977 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:16:58,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:16:59,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:16:59,293 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-01 13:16:59,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:16:59,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735548103] [2024-12-01 13:16:59,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735548103] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:16:59,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:16:59,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-12-01 13:16:59,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200472871] [2024-12-01 13:16:59,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:16:59,294 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-01 13:16:59,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:16:59,295 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-01 13:16:59,295 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-12-01 13:16:59,295 INFO L87 Difference]: Start difference. First operand 2488 states and 4062 transitions. Second operand has 10 states, 9 states have (on average 14.0) internal successors, (126), 9 states have internal predecessors, (126), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-12-01 13:16:59,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:16:59,468 INFO L93 Difference]: Finished difference Result 4942 states and 8088 transitions. [2024-12-01 13:16:59,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-01 13:16:59,469 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 14.0) internal successors, (126), 9 states have internal predecessors, (126), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 165 [2024-12-01 13:16:59,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:16:59,485 INFO L225 Difference]: With dead ends: 4942 [2024-12-01 13:16:59,485 INFO L226 Difference]: Without dead ends: 2479 [2024-12-01 13:16:59,495 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-12-01 13:16:59,495 INFO L435 NwaCegarLoop]: 879 mSDtfsCounter, 45 mSDsluCounter, 6110 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 6989 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 13:16:59,496 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 6989 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 13:16:59,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2479 states. [2024-12-01 13:16:59,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2479 to 2479. [2024-12-01 13:16:59,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2479 states, 1932 states have (on average 1.6237060041407867) internal successors, (3137), 1980 states have internal predecessors, (3137), 434 states have call successors, (434), 99 states have call predecessors, (434), 112 states have return successors, (476), 410 states have call predecessors, (476), 429 states have call successors, (476) [2024-12-01 13:16:59,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2479 states to 2479 states and 4047 transitions. [2024-12-01 13:16:59,674 INFO L78 Accepts]: Start accepts. Automaton has 2479 states and 4047 transitions. Word has length 165 [2024-12-01 13:16:59,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:16:59,674 INFO L471 AbstractCegarLoop]: Abstraction has 2479 states and 4047 transitions. [2024-12-01 13:16:59,674 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 14.0) internal successors, (126), 9 states have internal predecessors, (126), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-12-01 13:16:59,674 INFO L276 IsEmpty]: Start isEmpty. Operand 2479 states and 4047 transitions. [2024-12-01 13:16:59,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-12-01 13:16:59,678 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:16:59,678 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:16:59,678 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-12-01 13:16:59,679 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:16:59,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:16:59,679 INFO L85 PathProgramCache]: Analyzing trace with hash -862055511, now seen corresponding path program 1 times [2024-12-01 13:16:59,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:16:59,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128157325] [2024-12-01 13:16:59,679 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:16:59,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:16:59,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:17:00,129 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-01 13:17:00,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:17:00,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128157325] [2024-12-01 13:17:00,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128157325] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:17:00,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:17:00,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-12-01 13:17:00,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024287348] [2024-12-01 13:17:00,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:17:00,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-01 13:17:00,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:17:00,131 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-01 13:17:00,132 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-12-01 13:17:00,132 INFO L87 Difference]: Start difference. First operand 2479 states and 4047 transitions. Second operand has 10 states, 9 states have (on average 14.11111111111111) internal successors, (127), 9 states have internal predecessors, (127), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-12-01 13:17:00,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:17:00,349 INFO L93 Difference]: Finished difference Result 4874 states and 7994 transitions. [2024-12-01 13:17:00,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-01 13:17:00,350 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 14.11111111111111) internal successors, (127), 9 states have internal predecessors, (127), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 166 [2024-12-01 13:17:00,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:17:00,362 INFO L225 Difference]: With dead ends: 4874 [2024-12-01 13:17:00,363 INFO L226 Difference]: Without dead ends: 2473 [2024-12-01 13:17:00,370 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-12-01 13:17:00,370 INFO L435 NwaCegarLoop]: 888 mSDtfsCounter, 31 mSDsluCounter, 7056 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 7944 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 13:17:00,371 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 7944 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 13:17:00,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2473 states. [2024-12-01 13:17:00,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2473 to 2473. [2024-12-01 13:17:00,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2473 states, 1926 states have (on average 1.6251298026998962) internal successors, (3130), 1974 states have internal predecessors, (3130), 434 states have call successors, (434), 99 states have call predecessors, (434), 112 states have return successors, (476), 410 states have call predecessors, (476), 429 states have call successors, (476) [2024-12-01 13:17:00,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2473 states to 2473 states and 4040 transitions. [2024-12-01 13:17:00,491 INFO L78 Accepts]: Start accepts. Automaton has 2473 states and 4040 transitions. Word has length 166 [2024-12-01 13:17:00,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:17:00,491 INFO L471 AbstractCegarLoop]: Abstraction has 2473 states and 4040 transitions. [2024-12-01 13:17:00,491 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 14.11111111111111) internal successors, (127), 9 states have internal predecessors, (127), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-12-01 13:17:00,491 INFO L276 IsEmpty]: Start isEmpty. Operand 2473 states and 4040 transitions. [2024-12-01 13:17:00,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-12-01 13:17:00,495 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:17:00,495 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:17:00,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-12-01 13:17:00,495 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:17:00,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:17:00,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1307728153, now seen corresponding path program 1 times [2024-12-01 13:17:00,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:17:00,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312279042] [2024-12-01 13:17:00,496 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:17:00,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:17:00,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:17:00,746 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-12-01 13:17:00,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:17:00,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312279042] [2024-12-01 13:17:00,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312279042] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:17:00,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:17:00,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-01 13:17:00,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882236933] [2024-12-01 13:17:00,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:17:00,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-01 13:17:00,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:17:00,748 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-01 13:17:00,748 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-01 13:17:00,748 INFO L87 Difference]: Start difference. First operand 2473 states and 4040 transitions. Second operand has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 6 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2024-12-01 13:17:03,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:17:03,330 INFO L93 Difference]: Finished difference Result 7036 states and 11725 transitions. [2024-12-01 13:17:03,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-01 13:17:03,331 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 6 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) Word has length 166 [2024-12-01 13:17:03,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:17:03,355 INFO L225 Difference]: With dead ends: 7036 [2024-12-01 13:17:03,355 INFO L226 Difference]: Without dead ends: 4652 [2024-12-01 13:17:03,366 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-12-01 13:17:03,366 INFO L435 NwaCegarLoop]: 880 mSDtfsCounter, 3463 mSDsluCounter, 1284 mSDsCounter, 0 mSdLazyCounter, 3574 mSolverCounterSat, 1075 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3499 SdHoareTripleChecker+Valid, 2164 SdHoareTripleChecker+Invalid, 4649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1075 IncrementalHoareTripleChecker+Valid, 3574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-12-01 13:17:03,367 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3499 Valid, 2164 Invalid, 4649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1075 Valid, 3574 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-12-01 13:17:03,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4652 states. [2024-12-01 13:17:03,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4652 to 4269. [2024-12-01 13:17:03,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4269 states, 3278 states have (on average 1.6122635753508237) internal successors, (5285), 3376 states have internal predecessors, (5285), 795 states have call successors, (795), 162 states have call predecessors, (795), 195 states have return successors, (912), 768 states have call predecessors, (912), 790 states have call successors, (912) [2024-12-01 13:17:03,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4269 states to 4269 states and 6992 transitions. [2024-12-01 13:17:03,599 INFO L78 Accepts]: Start accepts. Automaton has 4269 states and 6992 transitions. Word has length 166 [2024-12-01 13:17:03,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:17:03,599 INFO L471 AbstractCegarLoop]: Abstraction has 4269 states and 6992 transitions. [2024-12-01 13:17:03,600 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 6 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2024-12-01 13:17:03,600 INFO L276 IsEmpty]: Start isEmpty. Operand 4269 states and 6992 transitions. [2024-12-01 13:17:03,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-12-01 13:17:03,603 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:17:03,603 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:17:03,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-12-01 13:17:03,603 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:17:03,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:17:03,603 INFO L85 PathProgramCache]: Analyzing trace with hash -457139314, now seen corresponding path program 1 times [2024-12-01 13:17:03,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:17:03,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73639891] [2024-12-01 13:17:03,604 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:17:03,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:17:03,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:17:03,772 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-12-01 13:17:03,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:17:03,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73639891] [2024-12-01 13:17:03,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73639891] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:17:03,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:17:03,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-01 13:17:03,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857081619] [2024-12-01 13:17:03,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:17:03,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-01 13:17:03,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:17:03,773 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-01 13:17:03,773 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-01 13:17:03,773 INFO L87 Difference]: Start difference. First operand 4269 states and 6992 transitions. Second operand has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 6 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2024-12-01 13:17:06,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:17:06,493 INFO L93 Difference]: Finished difference Result 13572 states and 22766 transitions. [2024-12-01 13:17:06,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-01 13:17:06,493 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 6 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) Word has length 167 [2024-12-01 13:17:06,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:17:06,531 INFO L225 Difference]: With dead ends: 13572 [2024-12-01 13:17:06,531 INFO L226 Difference]: Without dead ends: 9395 [2024-12-01 13:17:06,552 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-12-01 13:17:06,553 INFO L435 NwaCegarLoop]: 879 mSDtfsCounter, 3476 mSDsluCounter, 1298 mSDsCounter, 0 mSdLazyCounter, 3535 mSolverCounterSat, 1099 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3513 SdHoareTripleChecker+Valid, 2177 SdHoareTripleChecker+Invalid, 4634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1099 IncrementalHoareTripleChecker+Valid, 3535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-12-01 13:17:06,553 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3513 Valid, 2177 Invalid, 4634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1099 Valid, 3535 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-12-01 13:17:06,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9395 states. [2024-12-01 13:17:07,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9395 to 8628. [2024-12-01 13:17:07,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8628 states, 6479 states have (on average 1.6008643309152648) internal successors, (10372), 6709 states have internal predecessors, (10372), 1764 states have call successors, (1764), 288 states have call predecessors, (1764), 384 states have return successors, (2146), 1751 states have call predecessors, (2146), 1759 states have call successors, (2146) [2024-12-01 13:17:07,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8628 states to 8628 states and 14282 transitions. [2024-12-01 13:17:07,173 INFO L78 Accepts]: Start accepts. Automaton has 8628 states and 14282 transitions. Word has length 167 [2024-12-01 13:17:07,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:17:07,173 INFO L471 AbstractCegarLoop]: Abstraction has 8628 states and 14282 transitions. [2024-12-01 13:17:07,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 6 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2024-12-01 13:17:07,173 INFO L276 IsEmpty]: Start isEmpty. Operand 8628 states and 14282 transitions. [2024-12-01 13:17:07,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-12-01 13:17:07,178 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:17:07,178 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:17:07,178 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-12-01 13:17:07,178 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:17:07,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:17:07,178 INFO L85 PathProgramCache]: Analyzing trace with hash -902180596, now seen corresponding path program 1 times [2024-12-01 13:17:07,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:17:07,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381380693] [2024-12-01 13:17:07,179 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:17:07,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:17:07,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:17:07,362 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-12-01 13:17:07,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:17:07,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381380693] [2024-12-01 13:17:07,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381380693] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:17:07,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:17:07,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-01 13:17:07,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596305071] [2024-12-01 13:17:07,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:17:07,363 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-01 13:17:07,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:17:07,363 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-01 13:17:07,363 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-01 13:17:07,363 INFO L87 Difference]: Start difference. First operand 8628 states and 14282 transitions. Second operand has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 6 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2024-12-01 13:17:10,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:17:10,843 INFO L93 Difference]: Finished difference Result 30593 states and 52162 transitions. [2024-12-01 13:17:10,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-01 13:17:10,844 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 6 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) Word has length 168 [2024-12-01 13:17:10,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:17:10,926 INFO L225 Difference]: With dead ends: 30593 [2024-12-01 13:17:10,927 INFO L226 Difference]: Without dead ends: 22063 [2024-12-01 13:17:10,957 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-12-01 13:17:10,957 INFO L435 NwaCegarLoop]: 885 mSDtfsCounter, 3488 mSDsluCounter, 1313 mSDsCounter, 0 mSdLazyCounter, 3542 mSolverCounterSat, 1102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3526 SdHoareTripleChecker+Valid, 2198 SdHoareTripleChecker+Invalid, 4644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1102 IncrementalHoareTripleChecker+Valid, 3542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-12-01 13:17:10,957 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3526 Valid, 2198 Invalid, 4644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1102 Valid, 3542 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-12-01 13:17:10,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22063 states. [2024-12-01 13:17:11,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22063 to 20089. [2024-12-01 13:17:11,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20089 states, 14661 states have (on average 1.591160220994475) internal successors, (23328), 15264 states have internal predecessors, (23328), 4583 states have call successors, (4583), 540 states have call predecessors, (4583), 844 states have return successors, (5977), 4674 states have call predecessors, (5977), 4578 states have call successors, (5977) [2024-12-01 13:17:12,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20089 states to 20089 states and 33888 transitions. [2024-12-01 13:17:12,075 INFO L78 Accepts]: Start accepts. Automaton has 20089 states and 33888 transitions. Word has length 168 [2024-12-01 13:17:12,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:17:12,075 INFO L471 AbstractCegarLoop]: Abstraction has 20089 states and 33888 transitions. [2024-12-01 13:17:12,075 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 6 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2024-12-01 13:17:12,076 INFO L276 IsEmpty]: Start isEmpty. Operand 20089 states and 33888 transitions. [2024-12-01 13:17:12,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-12-01 13:17:12,081 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:17:12,081 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:17:12,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-12-01 13:17:12,081 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:17:12,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:17:12,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1437917331, now seen corresponding path program 1 times [2024-12-01 13:17:12,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:17:12,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846198074] [2024-12-01 13:17:12,082 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:17:12,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:17:12,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:17:12,295 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-12-01 13:17:12,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:17:12,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846198074] [2024-12-01 13:17:12,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846198074] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:17:12,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:17:12,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-01 13:17:12,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783210704] [2024-12-01 13:17:12,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:17:12,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-01 13:17:12,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:17:12,297 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-01 13:17:12,297 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-01 13:17:12,297 INFO L87 Difference]: Start difference. First operand 20089 states and 33888 transitions. Second operand has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 6 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2024-12-01 13:17:18,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:17:18,610 INFO L93 Difference]: Finished difference Result 78966 states and 137791 transitions. [2024-12-01 13:17:18,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-01 13:17:18,610 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 6 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) Word has length 169 [2024-12-01 13:17:18,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:17:18,885 INFO L225 Difference]: With dead ends: 78966 [2024-12-01 13:17:18,885 INFO L226 Difference]: Without dead ends: 58987 [2024-12-01 13:17:18,973 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-12-01 13:17:18,973 INFO L435 NwaCegarLoop]: 891 mSDtfsCounter, 3500 mSDsluCounter, 1328 mSDsCounter, 0 mSdLazyCounter, 3551 mSolverCounterSat, 1104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3539 SdHoareTripleChecker+Valid, 2219 SdHoareTripleChecker+Invalid, 4655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1104 IncrementalHoareTripleChecker+Valid, 3551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-12-01 13:17:18,973 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3539 Valid, 2219 Invalid, 4655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1104 Valid, 3551 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-12-01 13:17:19,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58987 states. [2024-12-01 13:17:22,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58987 to 53198. [2024-12-01 13:17:22,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53198 states, 37711 states have (on average 1.5841531648590597) internal successors, (59740), 39431 states have internal predecessors, (59740), 13414 states have call successors, (13414), 1044 states have call predecessors, (13414), 2072 states have return successors, (18822), 14009 states have call predecessors, (18822), 13409 states have call successors, (18822) [2024-12-01 13:17:22,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53198 states to 53198 states and 91976 transitions. [2024-12-01 13:17:22,401 INFO L78 Accepts]: Start accepts. Automaton has 53198 states and 91976 transitions. Word has length 169 [2024-12-01 13:17:22,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:17:22,402 INFO L471 AbstractCegarLoop]: Abstraction has 53198 states and 91976 transitions. [2024-12-01 13:17:22,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 6 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2024-12-01 13:17:22,402 INFO L276 IsEmpty]: Start isEmpty. Operand 53198 states and 91976 transitions. [2024-12-01 13:17:22,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-12-01 13:17:22,406 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:17:22,406 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:17:22,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-12-01 13:17:22,406 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:17:22,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:17:22,407 INFO L85 PathProgramCache]: Analyzing trace with hash -76982479, now seen corresponding path program 1 times [2024-12-01 13:17:22,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:17:22,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894620624] [2024-12-01 13:17:22,407 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:17:22,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:17:22,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:17:22,562 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-12-01 13:17:22,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:17:22,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894620624] [2024-12-01 13:17:22,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894620624] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:17:22,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:17:22,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-01 13:17:22,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051492726] [2024-12-01 13:17:22,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:17:22,563 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-01 13:17:22,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:17:22,564 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-01 13:17:22,564 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-01 13:17:22,564 INFO L87 Difference]: Start difference. First operand 53198 states and 91976 transitions. Second operand has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 6 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2024-12-01 13:17:37,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:17:37,262 INFO L93 Difference]: Finished difference Result 228871 states and 409358 transitions. [2024-12-01 13:17:37,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-01 13:17:37,263 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 6 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) Word has length 170 [2024-12-01 13:17:37,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:17:38,084 INFO L225 Difference]: With dead ends: 228871 [2024-12-01 13:17:38,084 INFO L226 Difference]: Without dead ends: 175807 [2024-12-01 13:17:38,339 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-12-01 13:17:38,340 INFO L435 NwaCegarLoop]: 897 mSDtfsCounter, 3512 mSDsluCounter, 1343 mSDsCounter, 0 mSdLazyCounter, 3560 mSolverCounterSat, 1106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3552 SdHoareTripleChecker+Valid, 2240 SdHoareTripleChecker+Invalid, 4666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1106 IncrementalHoareTripleChecker+Valid, 3560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-12-01 13:17:38,340 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3552 Valid, 2240 Invalid, 4666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1106 Valid, 3560 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-12-01 13:17:38,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175807 states. [2024-12-01 13:17:49,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175807 to 157819. [2024-12-01 13:17:49,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157819 states, 109429 states have (on average 1.5810434162790485) internal successors, (173012), 114630 states have internal predecessors, (173012), 42669 states have call successors, (42669), 2052 states have call predecessors, (42669), 5720 states have return successors, (64157), 45440 states have call predecessors, (64157), 42664 states have call successors, (64157) [2024-12-01 13:17:50,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157819 states to 157819 states and 279838 transitions. [2024-12-01 13:17:50,784 INFO L78 Accepts]: Start accepts. Automaton has 157819 states and 279838 transitions. Word has length 170 [2024-12-01 13:17:50,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:17:50,785 INFO L471 AbstractCegarLoop]: Abstraction has 157819 states and 279838 transitions. [2024-12-01 13:17:50,785 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 6 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2024-12-01 13:17:50,785 INFO L276 IsEmpty]: Start isEmpty. Operand 157819 states and 279838 transitions. [2024-12-01 13:17:50,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-12-01 13:17:50,795 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:17:50,795 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:17:50,795 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-12-01 13:17:50,795 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:17:50,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:17:50,796 INFO L85 PathProgramCache]: Analyzing trace with hash -494379085, now seen corresponding path program 1 times [2024-12-01 13:17:50,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:17:50,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268679339] [2024-12-01 13:17:50,796 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:17:50,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:17:50,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:17:51,049 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-12-01 13:17:51,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:17:51,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268679339] [2024-12-01 13:17:51,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268679339] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:17:51,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:17:51,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-01 13:17:51,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453961135] [2024-12-01 13:17:51,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:17:51,050 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-01 13:17:51,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:17:51,050 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-01 13:17:51,051 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-01 13:17:51,051 INFO L87 Difference]: Start difference. First operand 157819 states and 279838 transitions. Second operand has 9 states, 9 states have (on average 13.222222222222221) internal successors, (119), 9 states have internal predecessors, (119), 6 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2024-12-01 13:18:17,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:18:17,965 INFO L93 Difference]: Finished difference Result 505508 states and 900454 transitions. [2024-12-01 13:18:17,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-12-01 13:18:17,966 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.222222222222221) internal successors, (119), 9 states have internal predecessors, (119), 6 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) Word has length 170 [2024-12-01 13:18:17,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:18:19,899 INFO L225 Difference]: With dead ends: 505508 [2024-12-01 13:18:19,899 INFO L226 Difference]: Without dead ends: 347871 [2024-12-01 13:18:20,637 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 9 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 13:18:20,637 INFO L435 NwaCegarLoop]: 413 mSDtfsCounter, 2545 mSDsluCounter, 2329 mSDsCounter, 0 mSdLazyCounter, 5688 mSolverCounterSat, 571 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2628 SdHoareTripleChecker+Valid, 2742 SdHoareTripleChecker+Invalid, 6259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 571 IncrementalHoareTripleChecker+Valid, 5688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-12-01 13:18:20,637 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2628 Valid, 2742 Invalid, 6259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [571 Valid, 5688 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-12-01 13:18:20,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347871 states. [2024-12-01 13:18:44,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347871 to 339085. [2024-12-01 13:18:44,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339085 states, 236994 states have (on average 1.5794112931129058) internal successors, (374311), 247685 states have internal predecessors, (374311), 89055 states have call successors, (89055), 4586 states have call predecessors, (89055), 13035 states have return successors, (135442), 95421 states have call predecessors, (135442), 89050 states have call successors, (135442) [2024-12-01 13:18:46,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339085 states to 339085 states and 598808 transitions. [2024-12-01 13:18:46,723 INFO L78 Accepts]: Start accepts. Automaton has 339085 states and 598808 transitions. Word has length 170 [2024-12-01 13:18:46,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:18:46,723 INFO L471 AbstractCegarLoop]: Abstraction has 339085 states and 598808 transitions. [2024-12-01 13:18:46,723 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.222222222222221) internal successors, (119), 9 states have internal predecessors, (119), 6 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2024-12-01 13:18:46,724 INFO L276 IsEmpty]: Start isEmpty. Operand 339085 states and 598808 transitions. [2024-12-01 13:18:46,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-12-01 13:18:46,730 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:18:46,730 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:18:46,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-12-01 13:18:46,730 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:18:46,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:18:46,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1451253759, now seen corresponding path program 1 times [2024-12-01 13:18:46,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:18:46,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307512580] [2024-12-01 13:18:46,731 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:18:46,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:18:46,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:18:47,118 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-12-01 13:18:47,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:18:47,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307512580] [2024-12-01 13:18:47,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307512580] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:18:47,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:18:47,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-01 13:18:47,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359226888] [2024-12-01 13:18:47,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:18:47,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-01 13:18:47,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:18:47,120 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-01 13:18:47,120 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-01 13:18:47,120 INFO L87 Difference]: Start difference. First operand 339085 states and 598808 transitions. Second operand has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 5 states have internal predecessors, (122), 2 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (19), 4 states have call predecessors, (19), 2 states have call successors, (19) [2024-12-01 13:19:11,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:19:11,502 INFO L93 Difference]: Finished difference Result 681224 states and 1204683 transitions. [2024-12-01 13:19:11,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-01 13:19:11,503 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 5 states have internal predecessors, (122), 2 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (19), 4 states have call predecessors, (19), 2 states have call successors, (19) Word has length 175 [2024-12-01 13:19:11,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:19:13,465 INFO L225 Difference]: With dead ends: 681224 [2024-12-01 13:19:13,466 INFO L226 Difference]: Without dead ends: 342321 [2024-12-01 13:19:15,021 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 13:19:15,022 INFO L435 NwaCegarLoop]: 902 mSDtfsCounter, 0 mSDsluCounter, 4478 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5380 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 13:19:15,022 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 5380 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 13:19:15,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342321 states. [2024-12-01 13:19:39,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342321 to 341341. [2024-12-01 13:19:39,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341341 states, 238662 states have (on average 1.5753618087504504) internal successors, (375979), 249254 states have internal predecessors, (375979), 89055 states have call successors, (89055), 4586 states have call predecessors, (89055), 13623 states have return successors, (137110), 96108 states have call predecessors, (137110), 89050 states have call successors, (137110) [2024-12-01 13:19:41,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341341 states to 341341 states and 602144 transitions. [2024-12-01 13:19:41,590 INFO L78 Accepts]: Start accepts. Automaton has 341341 states and 602144 transitions. Word has length 175 [2024-12-01 13:19:41,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:19:41,590 INFO L471 AbstractCegarLoop]: Abstraction has 341341 states and 602144 transitions. [2024-12-01 13:19:41,590 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 5 states have internal predecessors, (122), 2 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (19), 4 states have call predecessors, (19), 2 states have call successors, (19) [2024-12-01 13:19:41,590 INFO L276 IsEmpty]: Start isEmpty. Operand 341341 states and 602144 transitions. [2024-12-01 13:19:41,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-12-01 13:19:41,595 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:19:41,595 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:19:41,596 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-12-01 13:19:41,596 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:19:41,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:19:41,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1320412514, now seen corresponding path program 1 times [2024-12-01 13:19:41,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:19:41,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850804328] [2024-12-01 13:19:41,596 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:19:41,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:19:41,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:19:41,772 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-12-01 13:19:41,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:19:41,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850804328] [2024-12-01 13:19:41,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850804328] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:19:41,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:19:41,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-01 13:19:41,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993555319] [2024-12-01 13:19:41,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:19:41,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-01 13:19:41,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:19:41,774 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-01 13:19:41,774 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-01 13:19:41,774 INFO L87 Difference]: Start difference. First operand 341341 states and 602144 transitions. Second operand has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 2 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (19), 4 states have call predecessors, (19), 2 states have call successors, (19) [2024-12-01 13:20:06,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:20:06,550 INFO L93 Difference]: Finished difference Result 685148 states and 1210179 transitions. [2024-12-01 13:20:06,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-01 13:20:06,550 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 2 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (19), 4 states have call predecessors, (19), 2 states have call successors, (19) Word has length 176 [2024-12-01 13:20:06,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:20:08,562 INFO L225 Difference]: With dead ends: 685148 [2024-12-01 13:20:08,562 INFO L226 Difference]: Without dead ends: 343989 [2024-12-01 13:20:10,267 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 13:20:10,268 INFO L435 NwaCegarLoop]: 902 mSDtfsCounter, 0 mSDsluCounter, 4478 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5380 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 13:20:10,268 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 5380 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 13:20:10,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343989 states.